CACNA1F-Related Retinopathy

Mendelian MONDO:0700243 Pathograph 4 Show in embeddings browser Ophthalmological Disease Retinal Dystrophy Inherited retinal dystrophy X-linked disease

CACNA1F-related retinopathy is an X-linked retinal channelopathy caused by pathogenic variants in CACNA1F, which encodes the alpha-1F pore-forming subunit of the Cav1.4 L-type voltage-gated calcium channel expressed at rod and cone photoreceptor ribbon synapses. Cav1.4 mediates the sustained, graded calcium influx required for tonic glutamate release from photoreceptors onto second-order bipolar cells in darkness. Most pathogenic variants are loss-of-function and abolish this synaptic transmission, producing the classic electronegative ERG (markedly reduced b-wave with relatively preserved a-wave) of incomplete congenital stationary night blindness (CSNB2A) -- distinguishing it from the "complete" CSNB caused by ON-bipolar-cell signal-transduction defects (e.g. NYX, GRM6). The disease spans a spectrum from stationary night blindness (CSNB2A) through the related, separately-curated Aland Island eye disease (fundus hypopigmentation plus CSNB2A features) to progressive X-linked cone-rod dystrophy (CORDX3), depending on residual channel activity and as-yet unidentified modifying factors -- with no clear genotype-phenotype correlation established. CACNA1F-retinopathy patients also show macular ganglion cell layer-inner plexiform layer thinning and optic disc pallor independent of myopia, indicating that inner retinal and optic nerve involvement extends beyond the primary photoreceptor synaptic defect.

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1
Inheritance
4
Pathophys.
14
Phenotypes
1
Gaps
4
Pathograph
1
Genes
3
Medical Actions
2
Subtypes
1
References
1
Deep Research
👪

Inheritance

1
X-linked recessive inheritance HP:0001419
Hemizygous CACNA1F variants in males cause disease; female carriers are typically asymptomatic, occasionally with mild latent nystagmus or ERG abnormalities. If the mother of an affected male is a carrier, each pregnancy carries a 50% chance of transmitting the pathogenic variant; affected males pass the variant to all daughters (obligate carriers) and no sons.
X-linked recessive inheritance
Show evidence (1 reference)
PMID:20301423 SUPPORT Human Clinical
"If the mother of the proband is a carrier, the chance of transmitting the pathogenic variant in each pregnancy is 50%."
GeneReviews genetic-counseling section quantifying transmission risk for X-linked CSNB/CACNA1F-related disease.
◆

Subtypes

2
Incomplete Congenital Stationary Night Blindness (CSNB2A) MONDO:0010241
The classic, non-progressive presentation. Nyctalopia and/or photophobia, myopia, nystagmus, reduced visual acuity, and a pathognomonic electronegative (Schubert-Bornschein) full-field ERG, with essentially normal fundus appearance apart from myopic changes.
X-linked Cone-Rod Dystrophy 3 (CORDX3) MONDO:0010335
A progressive end of the CACNA1F spectrum, with declining visual acuity, color vision, and visual fields over time, and fundus/OCT findings (chorioretinal atrophy, vascular attenuation) overlapping with retinitis-pigmentosa-like degeneration rather than the stationary course of CSNB2A.
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Discussions and Knowledge Gaps

1
Why do CACNA1F variants produce such divergent phenotypes (stationary CSNB2A/AIED versus progressive CORDX3/retinitis-pigmentosa-like disease) without a clear genotype-phenotype correlation, even among patients sharing the same variant?
KNOWLEDGE GAP OPEN gap_cacna1f_genotype_phenotype_divergence
Attached to
genetic#CACNA1F
Multiple independent cohorts report that neither variant type/location nor family background reliably predicts phenotype severity or progression, implying unidentified modifier genes or environmental factors shape the clinical spectrum.
Proposed experiments
Modifier-gene screen across stationary vs progressive CACNA1F cohorts
exp_cacna1f_modifier_gene_screen
Systematic modifier-gene screening (e.g. exome-wide association) across deeply phenotyped CACNA1F cohorts stratified by stationary (CSNB2A/AIED) vs progressive (CORDX3) course, to identify genetic or environmental factors that explain the divergent clinical trajectories.
⚙

Pathophysiology

4
Cav1.4 Channel Dysfunction at the Photoreceptor Ribbon Synapse
CACNA1F pathogenic variants (missense, nonsense, frameshift, splice-site, and synonymous splice-altering variants) alter Cav1.4 L-type calcium channel abundance, gating, or biophysical properties at the presynaptic ribbon synapse of rod and cone photoreceptors. Most variants are loss-of-function; rare gain-of-function variants (e.g. I756T) also cause disease via a distinct mechanism.
Photoreceptor cell CL:0000210 Cell Ontology (CL) Relation: this pathophysiological event involves this cell type This pathophysiological event involves Photoreceptor cell (CL:0000210). CL:0000210 is a cell type from the Cell Ontology.
Voltage-gated calcium channel activity GO:0005245 Gene Ontology (GO) Relation: this pathophysiological event involves this molecular function This pathophysiological event involves decreased Voltage-gated calcium channel activity (GO:0005245). GO:0005245 is a molecular function from the Gene Ontology. ↓ DECREASED
Downstream
Defective Photoreceptor-to-Bipolar Cell Glutamatergic Transmission
Show evidence (2 references)
PMID:33513752 SUPPORT Human Clinical
"these channels support Ca2+ influx under relatively depolarized conditions, which is necessary for tonic glutamate release from rod and cone photoreceptors"
Describes the normal Cav1.4 function at the photoreceptor synapse that CACNA1F variants disrupt.
PMID:36943941 SUPPORT In Vitro
"A set of known mutations affects conserved gating charges in"
Functional electrophysiology of pathogenic CACNA1F gating-charge substitutions supporting altered channel biophysics as the proximal molecular lesion.
Defective Photoreceptor-to-Bipolar Cell Glutamatergic Transmission
Impaired Ca2+ influx reduces tonic glutamate release from photoreceptor terminals onto ON- and OFF-bipolar cells, producing the pathognomonic electronegative full-field ERG (markedly reduced b-wave relative to a relatively preserved a-wave) that defines CACNA1F-related iCSNB.
Retinal bipolar neuron CL:0000748 Cell Ontology (CL) Relation: this pathophysiological event involves this cell type This pathophysiological event involves Retinal bipolar neuron (CL:0000748). CL:0000748 is a cell type from the Cell Ontology.
Glutamatergic synaptic transmission GO:0035249 Gene Ontology (GO) Relation: this pathophysiological event involves this biological process This pathophysiological event involves decreased Glutamatergic synaptic transmission, annotated with synaptic transmission, glutamatergic (GO:0035249). GO:0035249 is a biological process from the Gene Ontology. ↓ DECREASED
Downstream
Cone Bipolar Cell Dendritic Sprouting and Cone Pathway Dysfunction
Inner Retinal Thinning and Optic Nerve Involvement
Show evidence (2 references)
PMID:33668843 SUPPORT Human Clinical
"The DA standard flash ERG showed an electronegative configuration in 20 of 22 patients (mean (SD) b/a ratio: 0.59 (0.23); range 0.25-1.16)"
Quantifies the electronegative ERG (reduced b/a ratio) that reflects defective photoreceptor-to-bipolar-cell signaling.
PMID:33513752 SUPPORT Human Clinical
"b-wave was markedly attenuated giving rise to an electronegative waveform in both eyes, characteristically known as Schubert-Bornschein type ERG"
Confirms the electronegative Schubert-Bornschein ERG pattern in a molecularly-confirmed CACNA1F case.
Cone Bipolar Cell Dendritic Sprouting and Cone Pathway Dysfunction
In Cav1.4 gain-of-function (I756T) mice, cone photoreceptors retain the capacity to release glutamate, but most cone bipolar cells undergo dendritic sprouting and ganglion cell responses to photopic stimuli are lost in the majority of cells, indicating a postsynaptic cone bipolar cell defect downstream of the presynaptic channelopathy. Acute calcium-channel blockade did not rescue synaptic transmission deficits.
Retinal cone cell CL:0000573 Cell Ontology (CL) Relation: this pathophysiological event involves this cell type This pathophysiological event involves Retinal cone cell (CL:0000573). CL:0000573 is a cell type from the Cell Ontology. Cone retinal bipolar cell CL:0000752 Cell Ontology (CL) Relation: this pathophysiological event involves this cell type This pathophysiological event involves Cone retinal bipolar cell (CL:0000752). CL:0000752 is a cell type from the Cell Ontology.
Show evidence (1 reference)
PMID:33526839 SUPPORT Model Organism
"Though cone photoreceptors underwent morphological rearrangements, they retained their ability to release glutamate. Our functional data suggested a postsynaptic cone bipolar cell defect"
Mouse Cav1.4-IT model localizes a component of the cone pathway defect to the postsynaptic bipolar cell rather than presynaptic glutamate release itself.
Inner Retinal Thinning and Optic Nerve Involvement
Independent of myopia, CACNA1F-retinopathy patients show reduced macular ganglion cell layer-inner plexiform layer (GCL-IPL) thickness and optic disc pallor with reduced peripapillary retinal nerve fiber layer (RNFL) thickness, indicating that higher-order (inner retinal/optic nerve) structures are affected beyond the primary photoreceptor synaptic defect. This involvement appears to be present from childhood and stable over long-term follow-up rather than progressive.
Retinal ganglion cell CL:0000740 Cell Ontology (CL) Relation: this pathophysiological event involves this cell type This pathophysiological event involves Retinal ganglion cell (CL:0000740). CL:0000740 is a cell type from the Cell Ontology.
Show evidence (2 references)
PMID:33668843 SUPPORT Human Clinical
"Mean GCL-IPL thickness was significantly lower"
Quantifies macular inner retinal (GCL-IPL) thinning independent of myopia in molecularly-confirmed CACNA1F-retinopathy (55.00 vs 84.57 um in age-matched controls, p << 0.001).
PMID:36469668 SUPPORT Human Clinical
"Low average pRNFL thickness was evident in all patients. In three of them, pRNFL thickness was evaluated longitudinally and was proven to be stable over time."
Confirms optic nerve fiber layer thinning is present from an early age and stable, not progressive, over long-term follow-up.
⬡

Pathograph

Use the checkboxes to hide or show graph categories. Hover nodes for evidence and cross-linked metadata.
Pathograph: causal mechanism network for CACNA1F-Related Retinopathy Interactive directed graph showing how pathophysiology mechanisms, phenotypes, genetic factors and variants, experimental models, environmental triggers, and treatments relate through causal and linked edges.
●

Phenotypes

14
Eye 8
Nyctalopia FREQUENT HP:0000662 Human Phenotype Ontology (HP) Relation: this clinical feature is this phenotype This clinical feature is Nyctalopia (HP:0000662). HP:0000662 is a phenotype from the Human Phenotype Ontology.
Show evidence (1 reference)
PMID:33668843 SUPPORT Human Clinical
"nyctalopia and photophobia were reported in 50% (8 of 16) and 44% (7 of 16) of documented cases, respectively"
Quantifies nyctalopia frequency in a molecularly-confirmed CACNA1F cohort.
Photophobia FREQUENT HP:0000613 Human Phenotype Ontology (HP) Relation: this clinical feature is this phenotype This clinical feature is Photophobia (HP:0000613). HP:0000613 is a phenotype from the Human Phenotype Ontology.
Show evidence (1 reference)
PMID:33668843 SUPPORT Human Clinical
"photophobia were reported in 50% (8 of 16) and 44% (7 of 16) of documented cases, respectively"
Quantifies photophobia frequency in a molecularly-confirmed CACNA1F cohort.
Reduced Visual Acuity VERY_FREQUENT HP:0007663 Human Phenotype Ontology (HP) Relation: this clinical feature is this phenotype This clinical feature is Reduced visual acuity (HP:0007663). HP:0007663 is a phenotype from the Human Phenotype Ontology.
Show evidence (1 reference)
PMID:33668843 SUPPORT Human Clinical
"The BCVA was reduced in all patients (mean 0.42 logMAR, median 0.40 and range 0.10-0.80 logMAR)"
Documents universally reduced visual acuity in a 22-patient molecularly-confirmed cohort.
Myopia FREQUENT HP:0000545 Human Phenotype Ontology (HP) Relation: this clinical feature is this phenotype This clinical feature is Myopia (HP:0000545). HP:0000545 is a phenotype from the Human Phenotype Ontology.
Show evidence (1 reference)
PMID:33668843 SUPPORT Human Clinical
"The mean SE refractive error was -6.32D (median -7.38 and range -20.50 to + 2.50D), with myopia being common (68%; 15 of 22)"
Quantifies myopia frequency and severity in a molecularly-confirmed CACNA1F cohort.
Nystagmus FREQUENT HP:0000639 Human Phenotype Ontology (HP) Relation: this clinical feature is this phenotype This clinical feature is Nystagmus (HP:0000639). HP:0000639 is a phenotype from the Human Phenotype Ontology.
Show evidence (1 reference)
PMID:33668843 SUPPORT Human Clinical
"Nystagmus occurred in 50% (7 of 14) of patients for whom its presence or absence was documented"
Quantifies nystagmus frequency in a molecularly-confirmed CACNA1F cohort.
Strabismus HP:0000486 Human Phenotype Ontology (HP) Relation: this clinical feature is this phenotype This clinical feature is Strabismus (HP:0000486). HP:0000486 is a phenotype from the Human Phenotype Ontology.
Show evidence (1 reference)
PMID:20301423 SUPPORT Human Clinical
"occasionally hyperopia; nystagmus; strabismus; normal color"
GeneReviews lists strabismus among the clinical characteristics of X-linked CSNB, which includes CACNA1F-related incomplete CSNB.
Abnormal Electroretinogram VERY_FREQUENT HP:0000512 Human Phenotype Ontology (HP) Relation: this clinical feature is this phenotype This clinical feature is Abnormal electroretinogram (HP:0000512). HP:0000512 is a phenotype from the Human Phenotype Ontology.
Show evidence (1 reference)
PMID:33668843 SUPPORT Human Clinical
"The DA standard flash ERG showed an electronegative configuration in 20 of 22 patients (mean (SD) b/a ratio: 0.59 (0.23); range 0.25-1.16)"
Quantifies the near-universal electronegative ERG pattern in a molecularly-confirmed CACNA1F cohort.
Progressive Visual Loss HP:0000529 Human Phenotype Ontology (HP) Relation: this clinical feature is this phenotype This clinical feature is Progressive visual loss (HP:0000529). HP:0000529 is a phenotype from the Human Phenotype Ontology.
Show evidence (1 reference)
PMID:40390739 SUPPORT Human Clinical
"a 33-year-old Hispanic male patient with childhood-onset nyctalopia and progressive visual loss"
Documents a progressive clinical course distinguishing this CACNA1F presentation from stationary CSNB2A.
Other 6
Color Vision Defect OCCASIONAL Dyschromatopsia HP:0007641 Human Phenotype Ontology (HP) Relation: this clinical feature is this phenotype This clinical feature is Dyschromatopsia (HP:0007641). HP:0007641 is a phenotype from the Human Phenotype Ontology.
Show evidence (1 reference)
PMID:33668843 SUPPORT Human Clinical
"six patients showed red-green color defects, which were classified as mild (n = 4), medium (n = 1) or strong (n = 1) on HRR"
Quantifies color vision defects (6 of 21 tested, ~29%) in a molecularly-confirmed CACNA1F cohort.
Optic Disc Pallor VERY_FREQUENT HP:0000543 Human Phenotype Ontology (HP) Relation: this clinical feature is this phenotype This clinical feature is Optic disc pallor (HP:0000543). HP:0000543 is a phenotype from the Human Phenotype Ontology.
Show evidence (1 reference)
PMID:33668843 SUPPORT Human Clinical
"Twenty-one patients had color fundus photos available; 19 had some degree of disc pallor in both eyes"
Quantifies optic disc pallor frequency (21 of 22 subjects) in a molecularly-confirmed CACNA1F cohort.
Foveal Hypoplasia OCCASIONAL Hypoplasia of the fovea HP:0007750 Human Phenotype Ontology (HP) Relation: this clinical feature is this phenotype This clinical feature is Foveal hypoplasia, annotated with Hypoplasia of the fovea (HP:0007750). HP:0007750 is a phenotype from the Human Phenotype Ontology.
Show evidence (1 reference)
PMID:33668843 SUPPORT Human Clinical
"Foveal hypoplasia was identified in six cases on fundus photographs or OCT"
Quantifies foveal hypoplasia frequency (6 of 22, ~27%) in a molecularly-confirmed CACNA1F cohort.
Fundus Hypopigmentation HP:0007894 Human Phenotype Ontology (HP) Relation: this clinical feature is this phenotype This clinical feature is Fundus hypopigmentation (HP:0007894). HP:0007894 is a phenotype from the Human Phenotype Ontology.
Show evidence (1 reference)
PMID:33513752 SUPPORT Human Clinical
"Fundus examination showed hypopigmented (blonde) fundi with visible choroidal vasculature and peripapillary atrophy with a mildly hypoplastic optic nerve in both eyes"
Documents fundus hypopigmentation in a CACNA1F case with phenotype indistinguishable from Aland Island eye disease.
Retinoschisis HP:0030502 Human Phenotype Ontology (HP) Relation: this clinical feature is this phenotype This clinical feature is Retinoschisis (HP:0030502). HP:0030502 is a phenotype from the Human Phenotype Ontology.
Show evidence (1 reference)
PMID:38474172 SUPPORT Human Clinical
"Optical coherence tomography of the macula revealed retinoschisis in the right eye and foveal hypoplasia in the left eye"
Documents retinoschisis as a rare finding within the CACNA1F-associated Aland-Island-eye-disease spectrum.
Chorioretinal Atrophy HP:0000533 Human Phenotype Ontology (HP) Relation: this clinical feature is this phenotype This clinical feature is Chorioretinal atrophy (HP:0000533). HP:0000533 is a phenotype from the Human Phenotype Ontology.
Show evidence (1 reference)
PMID:40390739 SUPPORT Human Clinical
"Fundus examination revealed optic disc pallor and cupping, vascular attenuation, chorioretinal atrophy, and mid-peripheral bony spicules"
Documents progressive, RP-like chorioretinal degeneration in a CACNA1F patient at the CORDX3 end of the phenotypic spectrum.
🧬

Genetic Associations

1
CACNA1F
Gene: CACNA1F hgnc:1393 HUGO Gene Nomenclature Committee (hgnc) Relation: this disease-associated gene is this gene This disease-associated gene is CACNA1F (hgnc:1393). hgnc:1393 is a gene from the HUGO Gene Nomenclature Committee. relationship_type: CAUSATIVE
Show evidence (1 reference)
PMID:33513752 SUPPORT Human Clinical
"Two-hundred and thirty variants were reported to be associated with CSNB2A, 19 were specific to AIED, and 14 were associated with both AIED and CSNB2A"
Documents the size and overlap of the CACNA1F pathogenic variant spectrum across the CSNB2A/AIED phenotypic continuum.
💊

Medical Actions

3
Refractive Correction
Glasses or contact lenses to correct refractive error (myopia, occasionally hyperopia), which is common in CACNA1F-related disease; yearly eye examinations with refraction are recommended from a young age.
Show evidence (1 reference)
PMID:20301423 SUPPORT Human Clinical
"Glasses or contact lenses to treat refractive error (myopia or hyperopia)"
GeneReviews management section documenting refractive correction as supportive first-line management.
Strabismus Surgery
Action: strabismus surgeryNCI Thesaurus (NCIT) Relation: this treatment is this clinical intervention This treatment is strabismus surgery, annotated with Ophthalmologic Surgical Procedure (NCIT:C15331). NCIT:C15331 is a clinical intervention from the NCI Thesaurus. Ontology label: Ophthalmologic Surgical Procedure NCIT:C15331
Conventional strabismus surgery may be required to improve binocularity or head posture in patients with significant strabismus.
Show evidence (1 reference)
PMID:20301423 SUPPORT Human Clinical
"conventional strabismus surgery may be required to improve binocularity or head posture"
GeneReviews management section documenting strabismus surgery as supportive management for significant strabismus.
Gene Therapy (Preclinical)
Action: Gene therapyNCI Thesaurus (NCIT) Relation: this treatment is this clinical intervention This treatment is Gene therapy (NCIT:C15238). NCIT:C15238 is a clinical intervention from the NCI Thesaurus. Ontology label: Gene Therapy NCIT:C15238
No approved disease-specific therapy exists. Experimental gene-based strategies (e.g. beta2 subunit augmentation, in vivo electroporation to reintroduce Cav1.4-alpha1) have shown only partial functional recovery in animal models; a major translational barrier is that CACNA1F exceeds single-AAV packaging capacity, motivating dual-AAV delivery approaches not yet ready for clinical translation.
Show evidence (1 reference)
PMID:40129245 SUPPORT Other
"the paper will explore potential strategies for addressing Cav1.4 channel dysfunction and discuss the current challenges facing gene therapy approaches in this area of research"
Recent review summarizing preclinical gene-therapy strategies and their translational barriers for Cav1.4-related retinal channelopathies.
🔬

Diagnosis

2
Full-Field Electroretinogram (ERG)
Characteristic ERG findings are central to diagnosis and distinguish complete from incomplete X-linked CSNB. CACNA1F-related (incomplete) disease shows an electronegative (Schubert-Bornschein) waveform, with a markedly reduced b-wave relative to a relatively preserved a-wave, unlike the "complete" CSNB caused by ON-bipolar-cell signal-transduction defects.
electroretinogram NCIT:C101217 NCI Thesaurus (NCIT)
Results: Electronegative (reduced b/a ratio) dark-adapted standard/bright-flash ERG waveform.
Show evidence (2 references)
PMID:20301423 SUPPORT Human Clinical
"Characteristic ERG findings can help distinguish between complete X-linked CSNB and incomplete X-linked CSNB."
GeneReviews establishes ERG waveform pattern as the key diagnostic differentiator between complete and incomplete (CACNA1F-related) X-linked CSNB.
PMID:33668843 SUPPORT Human Clinical
"The DA standard flash ERG showed an electronegative configuration in 20 of 22 patients (mean (SD) b/a ratio: 0.59 (0.23); range 0.25-1.16)"
Quantifies the electronegative ERG waveform used diagnostically in a molecularly-confirmed CACNA1F cohort.
Molecular Genetic Testing
Identification of a hemizygous (or, in females, heterozygous/biallelic) pathogenic CACNA1F variant confirms the diagnosis, particularly when clinical/ERG features are inconclusive.
molecular genetic testing NCIT:C19770 NCI Thesaurus (NCIT)
Results: Identification of a hemizygous (male) or heterozygous/biallelic (female) pathogenic CACNA1F variant.
Show evidence (1 reference)
PMID:20301423 SUPPORT Human Clinical
"Identification of a hemizygous pathogenic variant in CACNA1F or NYX by molecular genetic testing can confirm the diagnosis if clinical features are inconclusive."
GeneReviews establishes molecular genetic testing as confirmatory when clinical/ERG findings alone are inconclusive.
{ }

Source YAML

click to show 
name: CACNA1F-Related Retinopathy
creation_date: "2026-07-13T00:00:00Z"
category: Mendelian
description: >
  CACNA1F-related retinopathy is an X-linked retinal channelopathy caused by
  pathogenic variants in CACNA1F, which encodes the alpha-1F pore-forming
  subunit of the Cav1.4 L-type voltage-gated calcium channel expressed at rod
  and cone photoreceptor ribbon synapses. Cav1.4 mediates the sustained,
  graded calcium influx required for tonic glutamate release from
  photoreceptors onto second-order bipolar cells in darkness. Most pathogenic
  variants are loss-of-function and abolish this synaptic transmission,
  producing the classic electronegative ERG (markedly reduced b-wave with
  relatively preserved a-wave) of incomplete congenital stationary night
  blindness (CSNB2A) -- distinguishing it from the "complete" CSNB caused by
  ON-bipolar-cell signal-transduction defects (e.g. NYX, GRM6). The disease
  spans a spectrum from stationary night blindness (CSNB2A) through the
  related, separately-curated Aland Island eye disease (fundus
  hypopigmentation plus CSNB2A features) to progressive X-linked cone-rod
  dystrophy (CORDX3), depending on residual channel activity and as-yet
  unidentified modifying factors -- with no clear genotype-phenotype
  correlation established. CACNA1F-retinopathy patients also show macular
  ganglion cell layer-inner plexiform layer thinning and optic disc pallor
  independent of myopia, indicating that inner retinal and optic nerve
  involvement extends beyond the primary photoreceptor synaptic defect.
disease_term:
  preferred_term: CACNA1F-related retinopathy
  term:
    id: MONDO:0700243
    label: CACNA1F-related retinopathy
synonyms:
- Incomplete congenital stationary night blindness type 2A
- CSNB2A
- iCSNB
- X-linked cone-rod dystrophy 3
- CORDX3
- CACNA1F-oculopathy
parents:
- Ophthalmological Disease
- Retinal Dystrophy
- Inherited retinal dystrophy
- X-linked disease
has_subtypes:
- name: CSNB2A
  display_name: Incomplete Congenital Stationary Night Blindness (CSNB2A)
  subtype_term:
    preferred_term: congenital stationary night blindness 2A
    term:
      id: MONDO:0010241
      label: congenital stationary night blindness 2A
  description: >-
    The classic, non-progressive presentation. Nyctalopia and/or photophobia,
    myopia, nystagmus, reduced visual acuity, and a pathognomonic
    electronegative (Schubert-Bornschein) full-field ERG, with essentially
    normal fundus appearance apart from myopic changes.
- name: CORDX3
  display_name: X-linked Cone-Rod Dystrophy 3 (CORDX3)
  subtype_term:
    preferred_term: X-linked cone-rod dystrophy 3
    term:
      id: MONDO:0010335
      label: X-linked cone-rod dystrophy 3
  description: >-
    A progressive end of the CACNA1F spectrum, with declining visual acuity,
    color vision, and visual fields over time, and fundus/OCT findings
    (chorioretinal atrophy, vascular attenuation) overlapping with
    retinitis-pigmentosa-like degeneration rather than the stationary course
    of CSNB2A.
inheritance:
- name: X-linked recessive inheritance
  inheritance_term:
    preferred_term: X-linked recessive inheritance
    term:
      id: HP:0001419
      label: X-linked recessive inheritance
  description: >-
    Hemizygous CACNA1F variants in males cause disease; female carriers are
    typically asymptomatic, occasionally with mild latent nystagmus or ERG
    abnormalities. If the mother of an affected male is a carrier, each
    pregnancy carries a 50% chance of transmitting the pathogenic variant;
    affected males pass the variant to all daughters (obligate carriers) and
    no sons.
  evidence:
  - reference: PMID:20301423
    reference_title: X-Linked Congenital Stationary Night Blindness.
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: >-
      If the mother of the proband is a carrier, the chance of transmitting
      the pathogenic variant in each pregnancy is 50%.
    explanation: >-
      GeneReviews genetic-counseling section quantifying transmission risk
      for X-linked CSNB/CACNA1F-related disease.
pathophysiology:
- name: Cav1.4 Channel Dysfunction at the Photoreceptor Ribbon Synapse
  description: >-
    CACNA1F pathogenic variants (missense, nonsense, frameshift, splice-site,
    and synonymous splice-altering variants) alter Cav1.4 L-type calcium
    channel abundance, gating, or biophysical properties at the presynaptic
    ribbon synapse of rod and cone photoreceptors. Most variants are
    loss-of-function; rare gain-of-function variants (e.g. I756T) also cause
    disease via a distinct mechanism.
  cell_types:
  - preferred_term: Photoreceptor cell
    term:
      id: CL:0000210
      label: photoreceptor cell
  molecular_functions:
  - preferred_term: Voltage-gated calcium channel activity
    term:
      id: GO:0005245
      label: voltage-gated calcium channel activity
    modifier: DECREASED
  evidence:
  - reference: PMID:33513752
    reference_title: "A Novel Splice-Site Variant in CACNA1F Causes a Phenotype Synonymous with Åland Island Eye Disease and Incomplete Congenital Stationary Night Blindness."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "these channels support Ca2+ influx under relatively depolarized conditions, which is necessary for tonic glutamate release from rod and cone photoreceptors"
    explanation: Describes the normal Cav1.4 function at the photoreceptor synapse that CACNA1F variants disrupt.
  - reference: PMID:36943941
    reference_title: "Characterization of two pathological gating-charge substitutions in Cav1.4 L-type calcium channels."
    supports: SUPPORT
    evidence_source: IN_VITRO
    snippet: "A set of known mutations affects conserved gating charges in"
    explanation: Functional electrophysiology of pathogenic CACNA1F gating-charge substitutions supporting altered channel biophysics as the proximal molecular lesion.
  downstream:
  - target: Defective Photoreceptor-to-Bipolar Cell Glutamatergic Transmission
- name: Defective Photoreceptor-to-Bipolar Cell Glutamatergic Transmission
  description: >-
    Impaired Ca2+ influx reduces tonic glutamate release from photoreceptor
    terminals onto ON- and OFF-bipolar cells, producing the pathognomonic
    electronegative full-field ERG (markedly reduced b-wave relative to a
    relatively preserved a-wave) that defines CACNA1F-related iCSNB.
  cell_types:
  - preferred_term: Retinal bipolar neuron
    term:
      id: CL:0000748
      label: retinal bipolar neuron
  biological_processes:
  - preferred_term: Glutamatergic synaptic transmission
    term:
      id: GO:0035249
      label: synaptic transmission, glutamatergic
    modifier: DECREASED
  evidence:
  - reference: PMID:33668843
    reference_title: "Optic Atrophy and Inner Retinal Thinning in CACNA1F-related Congenital Stationary Night Blindness."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "The DA standard flash ERG showed an electronegative configuration in 20 of 22 patients (mean (SD) b/a ratio: 0.59 (0.23); range 0.25-1.16)"
    explanation: Quantifies the electronegative ERG (reduced b/a ratio) that reflects defective photoreceptor-to-bipolar-cell signaling.
  - reference: PMID:33513752
    reference_title: "A Novel Splice-Site Variant in CACNA1F Causes a Phenotype Synonymous with Åland Island Eye Disease and Incomplete Congenital Stationary Night Blindness."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "b-wave was markedly attenuated giving rise to an electronegative waveform in both eyes, characteristically known as Schubert-Bornschein type ERG"
    explanation: Confirms the electronegative Schubert-Bornschein ERG pattern in a molecularly-confirmed CACNA1F case.
  downstream:
  - target: Cone Bipolar Cell Dendritic Sprouting and Cone Pathway Dysfunction
  - target: Inner Retinal Thinning and Optic Nerve Involvement
- name: Cone Bipolar Cell Dendritic Sprouting and Cone Pathway Dysfunction
  description: >-
    In Cav1.4 gain-of-function (I756T) mice, cone photoreceptors retain the
    capacity to release glutamate, but most cone bipolar cells undergo
    dendritic sprouting and ganglion cell responses to photopic stimuli are
    lost in the majority of cells, indicating a postsynaptic cone bipolar
    cell defect downstream of the presynaptic channelopathy. Acute
    calcium-channel blockade did not rescue synaptic transmission deficits.
  cell_types:
  - preferred_term: Retinal cone cell
    term:
      id: CL:0000573
      label: retinal cone cell
  - preferred_term: Cone retinal bipolar cell
    term:
      id: CL:0000752
      label: cone retinal bipolar cell
  evidence:
  - reference: PMID:33526839
    reference_title: "Function of cone and cone-related pathways in Ca(V)1.4 IT mice."
    supports: SUPPORT
    evidence_source: MODEL_ORGANISM
    snippet: "Though cone photoreceptors underwent morphological rearrangements, they retained their ability to release glutamate. Our functional data suggested a postsynaptic cone bipolar cell defect"
    explanation: Mouse Cav1.4-IT model localizes a component of the cone pathway defect to the postsynaptic bipolar cell rather than presynaptic glutamate release itself.
- name: Inner Retinal Thinning and Optic Nerve Involvement
  description: >-
    Independent of myopia, CACNA1F-retinopathy patients show reduced macular
    ganglion cell layer-inner plexiform layer (GCL-IPL) thickness and optic
    disc pallor with reduced peripapillary retinal nerve fiber layer (RNFL)
    thickness, indicating that higher-order (inner retinal/optic nerve)
    structures are affected beyond the primary photoreceptor synaptic defect.
    This involvement appears to be present from childhood and stable over
    long-term follow-up rather than progressive.
  cell_types:
  - preferred_term: Retinal ganglion cell
    term:
      id: CL:0000740
      label: retinal ganglion cell
  evidence:
  - reference: PMID:33668843
    reference_title: "Optic Atrophy and Inner Retinal Thinning in CACNA1F-related Congenital Stationary Night Blindness."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Mean GCL-IPL thickness was significantly lower"
    explanation: >-
      Quantifies macular inner retinal (GCL-IPL) thinning independent of
      myopia in molecularly-confirmed CACNA1F-retinopathy (55.00 vs 84.57 um
      in age-matched controls, p << 0.001).
  - reference: PMID:36469668
    reference_title: "Optic nerve involvement in CACNA1F-related disease: observations from a multicentric case series."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Low average pRNFL thickness was evident in all patients. In three of them, pRNFL thickness was evaluated longitudinally and was proven to be stable over time."
    explanation: Confirms optic nerve fiber layer thinning is present from an early age and stable, not progressive, over long-term follow-up.
phenotypes:
- name: Nyctalopia
  description: Night blindness, reported in about half of patients.
  phenotype_term:
    preferred_term: Nyctalopia
    term:
      id: HP:0000662
      label: Nyctalopia
  frequency: FREQUENT
  evidence:
  - reference: PMID:33668843
    reference_title: "Optic Atrophy and Inner Retinal Thinning in CACNA1F-related Congenital Stationary Night Blindness."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "nyctalopia and photophobia were reported in 50% (8 of 16) and 44% (7 of 16) of documented cases, respectively"
    explanation: Quantifies nyctalopia frequency in a molecularly-confirmed CACNA1F cohort.
- name: Photophobia
  description: >-
    Light sensitivity, which may be the presenting symptom, sometimes making
    the diagnosis harder to recognize without extended ERG.
  phenotype_term:
    preferred_term: Photophobia
    term:
      id: HP:0000613
      label: Photophobia
  frequency: FREQUENT
  evidence:
  - reference: PMID:33668843
    reference_title: "Optic Atrophy and Inner Retinal Thinning in CACNA1F-related Congenital Stationary Night Blindness."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "photophobia were reported in 50% (8 of 16) and 44% (7 of 16) of documented cases, respectively"
    explanation: Quantifies photophobia frequency in a molecularly-confirmed CACNA1F cohort.
- name: Reduced Visual Acuity
  description: Distance visual acuity is reduced in essentially all patients.
  phenotype_term:
    preferred_term: Reduced visual acuity
    term:
      id: HP:0007663
      label: Reduced visual acuity
  frequency: VERY_FREQUENT
  evidence:
  - reference: PMID:33668843
    reference_title: "Optic Atrophy and Inner Retinal Thinning in CACNA1F-related Congenital Stationary Night Blindness."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "The BCVA was reduced in all patients (mean 0.42 logMAR, median 0.40 and range 0.10-0.80 logMAR)"
    explanation: Documents universally reduced visual acuity in a 22-patient molecularly-confirmed cohort.
- name: Myopia
  description: >-
    Refractive error, most commonly myopia (occasionally high myopia), is
    common though not universal.
  phenotype_term:
    preferred_term: Myopia
    term:
      id: HP:0000545
      label: Myopia
  frequency: FREQUENT
  evidence:
  - reference: PMID:33668843
    reference_title: "Optic Atrophy and Inner Retinal Thinning in CACNA1F-related Congenital Stationary Night Blindness."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "The mean SE refractive error was -6.32D (median -7.38 and range -20.50 to + 2.50D), with myopia being common (68%; 15 of 22)"
    explanation: Quantifies myopia frequency and severity in a molecularly-confirmed CACNA1F cohort.
- name: Nystagmus
  description: Horizontal jerk or latent nystagmus, common but not universal.
  phenotype_term:
    preferred_term: Nystagmus
    term:
      id: HP:0000639
      label: Nystagmus
  frequency: FREQUENT
  evidence:
  - reference: PMID:33668843
    reference_title: "Optic Atrophy and Inner Retinal Thinning in CACNA1F-related Congenital Stationary Night Blindness."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Nystagmus occurred in 50% (7 of 14) of patients for whom its presence or absence was documented"
    explanation: Quantifies nystagmus frequency in a molecularly-confirmed CACNA1F cohort.
- name: Strabismus
  description: >-
    Strabismus is a recognized clinical feature of X-linked CACNA1F-related
    congenital stationary night blindness, sometimes managed with strabismus
    surgery.
  phenotype_term:
    preferred_term: Strabismus
    term:
      id: HP:0000486
      label: Strabismus
  evidence:
  - reference: PMID:20301423
    reference_title: X-Linked Congenital Stationary Night Blindness.
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "occasionally hyperopia; nystagmus; strabismus; normal color"
    explanation: GeneReviews lists strabismus among the clinical characteristics of X-linked CSNB, which includes CACNA1F-related incomplete CSNB.
- name: Color Vision Defect
  description: Mild-to-moderate red-green color vision defects in a minority of patients.
  phenotype_term:
    preferred_term: Dyschromatopsia
    term:
      id: HP:0007641
      label: Dyschromatopsia
  frequency: OCCASIONAL
  evidence:
  - reference: PMID:33668843
    reference_title: "Optic Atrophy and Inner Retinal Thinning in CACNA1F-related Congenital Stationary Night Blindness."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "six patients showed red-green color defects, which were classified as mild (n = 4), medium (n = 1) or strong (n = 1) on HRR"
    explanation: Quantifies color vision defects (6 of 21 tested, ~29%) in a molecularly-confirmed CACNA1F cohort.
- name: Abnormal Electroretinogram
  description: >-
    The pathognomonic electronegative (Schubert-Bornschein) full-field ERG,
    with a relatively preserved a-wave and markedly reduced b-wave on
    dark-adapted standard/bright-flash stimulation.
  phenotype_term:
    preferred_term: Abnormal electroretinogram
    term:
      id: HP:0000512
      label: Abnormal electroretinogram
  frequency: VERY_FREQUENT
  evidence:
  - reference: PMID:33668843
    reference_title: "Optic Atrophy and Inner Retinal Thinning in CACNA1F-related Congenital Stationary Night Blindness."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "The DA standard flash ERG showed an electronegative configuration in 20 of 22 patients (mean (SD) b/a ratio: 0.59 (0.23); range 0.25-1.16)"
    explanation: Quantifies the near-universal electronegative ERG pattern in a molecularly-confirmed CACNA1F cohort.
- name: Optic Disc Pallor
  description: >-
    Optic disc pallor and reduced peripapillary RNFL thickness, independent
    of the degree of myopia.
  phenotype_term:
    preferred_term: Optic disc pallor
    term:
      id: HP:0000543
      label: Optic disc pallor
  frequency: VERY_FREQUENT
  evidence:
  - reference: PMID:33668843
    reference_title: "Optic Atrophy and Inner Retinal Thinning in CACNA1F-related Congenital Stationary Night Blindness."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Twenty-one patients had color fundus photos available; 19 had some degree of disc pallor in both eyes"
    explanation: Quantifies optic disc pallor frequency (21 of 22 subjects) in a molecularly-confirmed CACNA1F cohort.
- name: Foveal Hypoplasia
  description: A minority of patients show foveal hypoplasia on fundus exam or OCT.
  phenotype_term:
    preferred_term: Foveal hypoplasia
    term:
      id: HP:0007750
      label: Hypoplasia of the fovea
  frequency: OCCASIONAL
  evidence:
  - reference: PMID:33668843
    reference_title: "Optic Atrophy and Inner Retinal Thinning in CACNA1F-related Congenital Stationary Night Blindness."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Foveal hypoplasia was identified in six cases on fundus photographs or OCT"
    explanation: Quantifies foveal hypoplasia frequency (6 of 22, ~27%) in a molecularly-confirmed CACNA1F cohort.
- name: Fundus Hypopigmentation
  description: >-
    Diffuse hypopigmentation ("blonde") fundus, more typical of the
    Aland-Island-eye-disease end of the spectrum than classic CSNB2A.
  phenotype_term:
    preferred_term: Fundus hypopigmentation
    term:
      id: HP:0007894
      label: Fundus hypopigmentation
  evidence:
  - reference: PMID:33513752
    reference_title: "A Novel Splice-Site Variant in CACNA1F Causes a Phenotype Synonymous with Åland Island Eye Disease and Incomplete Congenital Stationary Night Blindness."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Fundus examination showed hypopigmented (blonde) fundi with visible choroidal vasculature and peripapillary atrophy with a mildly hypoplastic optic nerve in both eyes"
    explanation: Documents fundus hypopigmentation in a CACNA1F case with phenotype indistinguishable from Aland Island eye disease.
- name: Retinoschisis
  description: >-
    Reported rarely, in a patient at the Aland-Island-eye-disease end of the
    CACNA1F spectrum.
  phenotype_term:
    preferred_term: Retinoschisis
    term:
      id: HP:0030502
      label: Retinoschisis
  evidence:
  - reference: PMID:38474172
    reference_title: "Aland Island Eye Disease with Retinoschisis in the Clinical Spectrum of CACNA1F-Associated Retinopathy-A Case Report."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Optical coherence tomography of the macula revealed retinoschisis in the right eye and foveal hypoplasia in the left eye"
    explanation: Documents retinoschisis as a rare finding within the CACNA1F-associated Aland-Island-eye-disease spectrum.
- name: Chorioretinal Atrophy
  subtype: CORDX3
  description: >-
    Progressive chorioretinal atrophy with vascular attenuation, reported in
    a CACNA1F patient at the cone-rod-dystrophy/retinitis-pigmentosa-like end
    of the spectrum.
  phenotype_term:
    preferred_term: Chorioretinal atrophy
    term:
      id: HP:0000533
      label: Chorioretinal atrophy
  evidence:
  - reference: PMID:40390739
    reference_title: "A New Phenotypic Expression in a Patient With a Mutation in the CACNA1F Gene."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Fundus examination revealed optic disc pallor and cupping, vascular attenuation, chorioretinal atrophy, and mid-peripheral bony spicules"
    explanation: Documents progressive, RP-like chorioretinal degeneration in a CACNA1F patient at the CORDX3 end of the phenotypic spectrum.
- name: Progressive Visual Loss
  subtype: CORDX3
  description: Progressive, rather than stationary, decline in vision.
  phenotype_term:
    preferred_term: Progressive visual loss
    term:
      id: HP:0000529
      label: Progressive visual loss
  evidence:
  - reference: PMID:40390739
    reference_title: "A New Phenotypic Expression in a Patient With a Mutation in the CACNA1F Gene."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "a 33-year-old Hispanic male patient with childhood-onset nyctalopia and progressive visual loss"
    explanation: Documents a progressive clinical course distinguishing this CACNA1F presentation from stationary CSNB2A.
genetic:
- name: CACNA1F
  gene_term:
    preferred_term: CACNA1F
    term:
      id: hgnc:1393
      label: CACNA1F
  relationship_type: CAUSATIVE
  notes: >-
    Encodes the alpha-1F pore-forming subunit of the Cav1.4 L-type
    voltage-gated calcium channel. Located at Xp11.23, 48 exons; the
    pathogenic variant spectrum includes missense, nonsense, frameshift,
    splice-site, and intronic/synonymous splice-altering variants, with no
    clear genotype-phenotype correlation established.
  evidence:
  - reference: PMID:33513752
    reference_title: "A Novel Splice-Site Variant in CACNA1F Causes a Phenotype Synonymous with Åland Island Eye Disease and Incomplete Congenital Stationary Night Blindness."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Two-hundred and thirty variants were reported to be associated with CSNB2A, 19 were specific to AIED, and 14 were associated with both AIED and CSNB2A"
    explanation: Documents the size and overlap of the CACNA1F pathogenic variant spectrum across the CSNB2A/AIED phenotypic continuum.
discussions:
- discussion_id: gap_cacna1f_genotype_phenotype_divergence
  kind: KNOWLEDGE_GAP
  status: OPEN
  attaches_to:
  - genetic#CACNA1F
  prompt: >-
    Why do CACNA1F variants produce such divergent phenotypes (stationary
    CSNB2A/AIED versus progressive CORDX3/retinitis-pigmentosa-like disease)
    without a clear genotype-phenotype correlation, even among patients
    sharing the same variant?
  rationale: >-
    Multiple independent cohorts report that neither variant type/location
    nor family background reliably predicts phenotype severity or
    progression, implying unidentified modifier genes or environmental
    factors shape the clinical spectrum.
  proposed_experiments:
  - experiment_id: exp_cacna1f_modifier_gene_screen
    name: Modifier-gene screen across stationary vs progressive CACNA1F cohorts
    description: >-
      Systematic modifier-gene screening (e.g. exome-wide association) across
      deeply phenotyped CACNA1F cohorts stratified by stationary (CSNB2A/AIED)
      vs progressive (CORDX3) course, to identify genetic or environmental
      factors that explain the divergent clinical trajectories.
diagnosis:
- name: Full-Field Electroretinogram (ERG)
  description: >-
    Characteristic ERG findings are central to diagnosis and distinguish
    complete from incomplete X-linked CSNB. CACNA1F-related (incomplete)
    disease shows an electronegative (Schubert-Bornschein) waveform, with a
    markedly reduced b-wave relative to a relatively preserved a-wave, unlike
    the "complete" CSNB caused by ON-bipolar-cell signal-transduction defects.
  diagnosis_term:
    preferred_term: electroretinogram
    term:
      id: NCIT:C101217
      label: Retinal Examination
  results: >-
    Electronegative (reduced b/a ratio) dark-adapted standard/bright-flash
    ERG waveform.
  evidence:
  - reference: PMID:20301423
    reference_title: X-Linked Congenital Stationary Night Blindness.
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: >-
      Characteristic ERG findings can help distinguish between complete
      X-linked CSNB and incomplete X-linked CSNB.
    explanation: >-
      GeneReviews establishes ERG waveform pattern as the key diagnostic
      differentiator between complete and incomplete (CACNA1F-related)
      X-linked CSNB.
  - reference: PMID:33668843
    reference_title: "Optic Atrophy and Inner Retinal Thinning in CACNA1F-related Congenital Stationary Night Blindness."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "The DA standard flash ERG showed an electronegative configuration in 20 of 22 patients (mean (SD) b/a ratio: 0.59 (0.23); range 0.25-1.16)"
    explanation: >-
      Quantifies the electronegative ERG waveform used diagnostically in a
      molecularly-confirmed CACNA1F cohort.
- name: Molecular Genetic Testing
  description: >-
    Identification of a hemizygous (or, in females, heterozygous/biallelic)
    pathogenic CACNA1F variant confirms the diagnosis, particularly when
    clinical/ERG features are inconclusive.
  diagnosis_term:
    preferred_term: molecular genetic testing
    term:
      id: NCIT:C19770
      label: Molecular Analysis
  results: Identification of a hemizygous (male) or heterozygous/biallelic (female) pathogenic CACNA1F variant.
  evidence:
  - reference: PMID:20301423
    reference_title: X-Linked Congenital Stationary Night Blindness.
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: >-
      Identification of a hemizygous pathogenic variant in CACNA1F or NYX by
      molecular genetic testing can confirm the diagnosis if clinical
      features are inconclusive.
    explanation: >-
      GeneReviews establishes molecular genetic testing as confirmatory when
      clinical/ERG findings alone are inconclusive.
treatments:
- name: Refractive Correction
  description: >-
    Glasses or contact lenses to correct refractive error (myopia, occasionally
    hyperopia), which is common in CACNA1F-related disease; yearly eye
    examinations with refraction are recommended from a young age.
  treatment_term:
    preferred_term: therapeutic procedure of ocular refractive media
  evidence:
  - reference: PMID:20301423
    reference_title: X-Linked Congenital Stationary Night Blindness.
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: >-
      Glasses or contact lenses to treat refractive error (myopia or
      hyperopia)
    explanation: >-
      GeneReviews management section documenting refractive correction as
      supportive first-line management.
- name: Strabismus Surgery
  description: >-
    Conventional strabismus surgery may be required to improve binocularity
    or head posture in patients with significant strabismus.
  treatment_term:
    preferred_term: strabismus surgery
    term:
      id: NCIT:C15331
      label: Ophthalmologic Surgical Procedure
  evidence:
  - reference: PMID:20301423
    reference_title: X-Linked Congenital Stationary Night Blindness.
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: >-
      conventional strabismus surgery may be required to improve
      binocularity or head posture
    explanation: >-
      GeneReviews management section documenting strabismus surgery as
      supportive management for significant strabismus.
- name: Gene Therapy (Preclinical)
  description: >-
    No approved disease-specific therapy exists. Experimental gene-based
    strategies (e.g. beta2 subunit augmentation, in vivo electroporation to
    reintroduce Cav1.4-alpha1) have shown only partial functional recovery in
    animal models; a major translational barrier is that CACNA1F exceeds
    single-AAV packaging capacity, motivating dual-AAV delivery approaches
    not yet ready for clinical translation.
  therapeutic_modality: GENE_THERAPY
  treatment_term:
    preferred_term: Gene therapy
    term:
      id: NCIT:C15238
      label: Gene Therapy
  evidence:
  - reference: PMID:40129245
    reference_title: "Exploring the potential for gene therapy in Cav1.4-related retinal channelopathies."
    supports: SUPPORT
    evidence_source: OTHER
    snippet: "the paper will explore potential strategies for addressing Cav1.4 channel dysfunction and discuss the current challenges facing gene therapy approaches in this area of research"
    explanation: Recent review summarizing preclinical gene-therapy strategies and their translational barriers for Cav1.4-related retinal channelopathies.
references:
- reference: PMID:20301423
  title: "X-Linked Congenital Stationary Night Blindness."
  tags:
  - GeneReviews
📚

References & Deep Research

References

1
PMID:20301423
X-Linked Congenital Stationary Night Blindness.
No top-level findings curated for this source.

Deep Research

1
Falcon ▸
1. Disease Information
Edison Scientific Literature 72 citations 2026-07-13T20:55:17.784558

1. Disease Information

Overview (what is the disease?)

CACNA1F-related retinopathy is an X-linked inherited retinal disorder caused by pathogenic variants in CACNA1F, encoding the Cav1.4 L-type voltage-gated calcium channel α1F subunit expressed at the photoreceptor ribbon synapse. Clinically, CACNA1F variants produce a spectrum spanning non-progressive synaptic transmission disorders (classically incomplete congenital stationary night blindness) through to progressive cone–rod dystrophy phenotypes, with substantial phenotypic overlap and heterogeneity. (marziali2023opticnerveinvolvement pages 1-6, wygledowskapromienska2024alandislandeye pages 1-2, mahmood2021anovelsplicesite pages 5-8)

Key disease entities and OMIM identifiers (available in retrieved sources)

The CACNA1F phenotypic spectrum is explicitly summarized in recent clinical genetics/ophthalmology papers: - CACNA1F gene: MIM 300110 (wygledowskapromienska2024alandislandeye pages 1-2, marziali2023opticnerveinvolvement pages 1-6, mahmood2021anovelsplicesite pages 1-2) - X-linked congenital stationary night blindness type 2A (CSNB2A / iCSNB): OMIM 300071 (wygledowskapromienska2024alandislandeye pages 1-2, schaare2023concomitantcalciumchannelopathies pages 1-2) - Åland Island eye disease (AIED): OMIM 300600 (wygledowskapromienska2024alandislandeye pages 1-2, schaare2023concomitantcalciumchannelopathies pages 1-2) - X-linked cone–rod dystrophy type 3 (CORDX3): OMIM 300476 (wygledowskapromienska2024alandislandeye pages 1-2)

Synonyms and alternative names

  • CSNB2A: “incomplete CSNB,” “Miyake incomplete CSNB,” “iCSNB” (marziali2023opticnerveinvolvement pages 1-6)
  • AIED: also referred to as “Forsius-Eriksson syndrome” in the CACNA1F spectrum literature (marziali2023opticnerveinvolvement pages 14-20)
  • Cross-spectrum wording: “CACNA1F-associated retinopathy/oculopathy” has been proposed to reflect allelic overlap between entities (mahmood2021anovelsplicesite pages 5-8)

Other identifiers (Orphanet, ICD-10/ICD-11, MeSH, MONDO)

These identifiers were not present in the retrieved full-text evidence set and are therefore not reported here to avoid hallucination.

Evidence source type

The information in this report is derived from: - Aggregated disease-level resources in peer-reviewed reviews/case series, plus - Primary human cohorts/case series and animal model studies (mouse; plus mentions of rat/zebrafish models) (marziali2023opticnerveinvolvement pages 6-10, leahy2021opticatrophyand pages 3-6, laird2023mouseallconeretina pages 1-2, maddox2024anonconductingrole pages 1-2).

2. Etiology

Disease causal factors

  • Primary cause: Germline pathogenic variants in CACNA1F (X chromosome, Xp11.23) encoding the pore-forming α1F subunit of Cav1.4 L-type voltage-gated calcium channels at the first retinal synapse (photoreceptor → bipolar/horizontal cells). (marziali2023opticnerveinvolvement pages 1-6, ganglberger2025exploringthepotential pages 1-2)

Risk factors

  • Genetic: Hemizygous pathogenic CACNA1F variants in males are the main causal risk factor (X-linked inheritance). (mahmood2021anovelsplicesite pages 1-2, marziali2023opticnerveinvolvement pages 1-6)
  • Sex: Marked male predominance is reported in literature reviews; one review cohort reported 87% male among CACNA1F cases. (schaare2023concomitantcalciumchannelopathies pages 12-14)

Protective factors

No protective genetic or environmental factors were identified in the retrieved evidence.

Gene–environment interactions

No gene–environment interaction evidence specific to CACNA1F-related retinopathy was identified in the retrieved evidence. Mechanistic papers acknowledge that differential symptoms may involve “genomic and environmental deviations,” but without specific, testable GxE claims. (heigl2023characterizationoftwo pages 1-2)

3. Phenotypes

Core phenotype profile (human)

CACNA1F-related retinopathy classically involves impaired signaling from photoreceptors to bipolar cells, producing a characteristic ERG pattern (electronegative/negative). Across cohorts, common features include reduced visual acuity, myopia (often high), nystagmus, variable nyctalopia and/or photophobia, and sometimes optic disc pallor/inner retinal thinning on OCT. (leahy2021opticatrophyand pages 3-6, marziali2023opticnerveinvolvement pages 6-10, wygledowskapromienska2024alandislandeye pages 1-2)

Quantitative cohort data (selected)

Leahy et al. 2021 (Genes; Feb 2021; DOI: https://doi.org/10.3390/genes12030330) analyzed 22 molecularly confirmed CACNA1F-retinopathy subjects and reported: - Mean VA 0.42 LogMAR; myopia in 15/22 (68%), mean −6.32 D; abnormal color vision in 6/21; optic disc pallor in 21/22; mean macular GCL-IPL 55.00 µm vs 84.57 µm in controls (p << 0.001). (leahy2021opticatrophyand pages 1-2, leahy2021opticatrophyand pages 3-6, leahy2021opticatrophyand pages 6-7)

Marziali et al. 2023 (Ophthalmic Genetics; Dec 2023; DOI: https://doi.org/10.1080/13816810.2022.2132514) multicenter series of 12 patients emphasized long follow-up and stability: - Mean follow-up 11.63 years (range 6–18), persistent myopia (reported as progressive high myopia in some), and low pRNFL thickness in all patients, with longitudinal stability in those tracked. (marziali2023opticnerveinvolvement pages 6-10, marziali2023opticnerveinvolvement pages 20-27)

Phenotype characteristics (onset, course, frequency)

  • Onset: Often congenital/early childhood for CSNB2A/AIED; CORDX3 is described as progressive and often begins in adulthood in spectrum reviews, although overlap is common. (wygledowskapromienska2024alandislandeye pages 1-2)
  • Course: CSNB2A/AIED are usually described as non-progressive/stationary, but there is a spectrum including progressive phenotypes (CORDX3, X-linked retinitis pigmentosa-like presentations). (marziali2023opticnerveinvolvement pages 1-6, wygledowskapromienska2024alandislandeye pages 1-2, calderon2025anewphenotypic pages 5-7)
  • Phenotypic heterogeneity: Frequently emphasized; genotype–phenotype correlations are weak/unclear in multiple sources. (mahmood2021anovelsplicesite pages 2-5, schaare2023concomitantcalciumchannelopathies pages 12-14)

HPO term suggestions (non-exhaustive)

  • Nyctalopia HP:0000662
  • Photophobia HP:0000613
  • Reduced visual acuity HP:0007663
  • Myopia HP:0000545 / High myopia HP:0011003
  • Nystagmus HP:0000639
  • Strabismus HP:0000486
  • Abnormal electroretinogram HP:0000556 (for electronegative ERG pattern)
  • Optic disc pallor / optic atrophy HP:0000648 / HP:0000649
  • Foveal hypoplasia HP:0007368
  • Retinoschisis HP:0007668 (reported within AIED spectrum case) (wygledowskapromienska2024alandislandeye pages 1-2)

Quality-of-life impact

Direct validated QoL instruments (EQ-5D/SF-36/PROMIS) were not reported in the retrieved evidence set. Functional impact is indirectly supported by persistent reduced VA, myopia, and photophobia/nyctalopia affecting daily vision. (leahy2021opticatrophyand pages 3-6, marziali2023opticnerveinvolvement pages 1-6)

4. Genetic/Molecular Information

Causal gene

  • CACNA1F (Cav1.4 α1F subunit; Xp11.23; OMIM/MIM 300110) (marziali2023opticnerveinvolvement pages 1-6)

Pathogenic variant spectrum

CACNA1F-associated disease includes diverse variant types (missense, nonsense, splice-site, indel, structural changes), with a large and growing allelic spectrum: - One paper reports “230 variants associated with CSNB2A,” with subsets specific to AIED and shared between conditions. (mahmood2021anovelsplicesite pages 2-5) - A review/case report also notes “around 260 variants” reported for AIED/CSNB2A spectrum disorders. (mahmood2021anovelsplicesite pages 1-2) - Intronic/synonymous variants contribute non-trivially (reported “at least 4%” in one excerpt). (mahmood2021anovelsplicesite pages 8-8)

Examples of recently reported variants with functional/clinical evidence: - Splice-altering CACNA1F variant investigated with functional splicing assays (midigene/RT-PCR in HEK293) leading to reclassification under ACMG/AMP/ClinGen frameworks: NM_005183.4:c.2576+4_2576+5del, producing “multimodal splice defect” with both in-frame insertion and frameshift outcomes. (ridgeway2024novelsplicealteringvariants pages 16-17)

Variant functional consequences (mechanistic examples)

  • Voltage sensor/gating charge substitutions (e.g., Arg964Gly; Arg1288Leu) can reduce expression and alter activation/inactivation; molecular dynamics suggested possible ω-currents (gating pore currents) as a proposed pathogenic mechanism. (heigl2023characterizationoftwo pages 1-2)

Modifier genes / modifying factors

Evidence for specific modifier genes in CACNA1F disease was not identified in the retrieved full texts; however, multiple papers propose unknown disease-modifying factors to explain variability (including potential splice isoform effects). (wygledowskapromienska2024alandislandeye pages 1-2, calderon2025anewphenotypic pages 2-5)

Epigenetic information / chromosomal abnormalities

No CACNA1F-specific epigenetic disease mechanism evidence was identified in the retrieved sources.

5. Environmental Information

No environmental, lifestyle, toxin, or infectious triggers were identified as causal contributors in the retrieved evidence set.

6. Mechanism / Pathophysiology

Current mechanistic understanding (key concepts)

Cav1.4 channels are localized to photoreceptor synaptic terminals at ribbon synapses, where they provide Ca2+ influx that triggers vesicle fusion and glutamate release to downstream neurons. - A review describes Cav1.4 channels clustering “beneath the synaptic ribbon” to enable Ca2+-dependent synaptic release, and notes that CACNA1F variants produce retinal disorders with variable loss- vs gain-of-function channel phenotypes. (ganglberger2025exploringthepotential pages 1-2) - A cone-focused mechanistic study emphasizes a non-conducting role: Cav1.4 protein contributes to synaptogenesis, and compensatory currents (Cav3) can support photopic vision under some non-conducting Cav1.4 conditions. (maddox2024anonconductingrole pages 1-2)

Causal chain (from gene to clinical manifestation)

  1. CACNA1F pathogenic variant alters Cav1.4 channel abundance, biophysics, or synaptic localization (heigl2023characterizationoftwo pages 1-2, ganglberger2025exploringthepotential pages 1-2)
  2. Photoreceptor ribbon synapse dysfunction: impaired Ca2+ signaling and/or abnormal ribbon maturation/architecture; errors in synaptic wiring, sprouting, ectopic synapses (zanetti2021functionofcone pages 1-2, ganglberger2025exploringthepotential pages 9-10)
  3. Defective photoreceptor→bipolar transmission produces electronegative ERG pattern (reduced b-wave relative to a-wave), reflecting bipolar cell pathway dysfunction (leahy2021opticatrophyand pages 1-2, marziali2023opticnerveinvolvement pages 1-6)
  4. Clinical phenotype: reduced VA, myopia, nystagmus, nyctalopia and/or photophobia; in some cohorts, optic disc pallor and inner retinal thinning (GCL-IPL and/or pRNFL/GCC) (leahy2021opticatrophyand pages 3-6, marziali2023opticnerveinvolvement pages 6-10, leahy2021opticatrophyand pages 7-8)

Cell types (CL term suggestions)

  • Photoreceptor cell (rod and cone) CL:0000210 (photoreceptor cell) (general)
  • Bipolar cell CL:0000740 (retinal bipolar neuron) (general)
  • Horizontal cell (retinal) CL:0000741 (retinal horizontal cell) (general)
  • Retinal ganglion cell CL:0000745 (general; implicated by GCC thinning metrics)

Tissue/anatomy (UBERON suggestions)

  • Retina UBERON:0000966
  • Outer plexiform layer UBERON:0001854 (photoreceptor synaptic layer; implied by ribbon synapse localization) (ganglberger2025exploringthepotential pages 9-10)
  • Optic nerve UBERON:0000953 (optic nerve involvement reported clinically) (marziali2023opticnerveinvolvement pages 6-10)

GO biological process suggestions (non-exhaustive)

  • Synaptic transmission, glutamatergic
  • Calcium ion transmembrane transport
  • Photoreceptor cell synapse organization
  • Regulation of neurotransmitter secretion

Immune involvement

Not supported in retrieved evidence.

Molecular profiling (transcriptomics/proteomics/metabolomics)

No CACNA1F disease-specific omics signatures were identified in the retrieved evidence set.

7. Anatomical Structures Affected

Organ/system level

  • Primary organ: eye (retina); visual system. (ganglberger2025exploringthepotential pages 1-2)
  • Optic nerve/inner retina involvement: pRNFL and GCC thinning, optic disc pallor/atrophy described in CACNA1F cohorts. (marziali2023opticnerveinvolvement pages 6-10, leahy2021opticatrophyand pages 7-8)

Tissue/cell level

  • Photoreceptor terminals and their postsynaptic partners at ribbon synapses (bipolar and horizontal cells). (ganglberger2025exploringthepotential pages 1-2, maddox2024anonconductingrole pages 1-2)

Subcellular level

  • Presynaptic active zone and ribbon synapse architecture (ribbon-associated channel clustering). (ganglberger2025exploringthepotential pages 1-2)

8. Temporal Development

Onset

  • CSNB2A/AIED: typically congenital or early childhood, with symptoms such as nystagmus, nyctalopia/photophobia, and high myopia in early life. (wygledowskapromienska2024alandislandeye pages 1-2, leahy2021opticatrophyand pages 3-6)

Progression

  • Stationary vs progressive spectrum: non-progressive forms (CSNB2A/AIED) contrasted with progressive phenotypes (CORDX3; XLRP-like). (wygledowskapromienska2024alandislandeye pages 1-2, marziali2023opticnerveinvolvement pages 1-6)
  • Optic nerve metrics may be stable over follow-up (pRNFL stability). (marziali2023opticnerveinvolvement pages 6-10)

Critical periods

Developmental mechanistic work indicates Cav1.4 is important for ribbon maturation after early postnatal stages in mice; this suggests timing constraints for some interventions, though human critical windows were not established in retrieved sources. (ganglberger2025exploringthepotential pages 6-9)

9. Inheritance and Population

Inheritance pattern

  • X-linked recessive inheritance is repeatedly documented. (wygledowskapromienska2024alandislandeye pages 1-2, marziali2023opticnerveinvolvement pages 1-6)

Sex ratio and carrier phenotypes

  • A literature review summarizing 54 CACNA1F patients reported 87% male and 13% female. (schaare2023concomitantcalciumchannelopathies pages 12-14)
  • Female carriers are often asymptomatic but mild features (e.g., latent nystagmus, color vision disturbance, ERG abnormalities) are reported. (mahmood2021anovelsplicesite pages 1-2, marziali2023opticnerveinvolvement pages 1-6)

Penetrance/expressivity

  • Expressivity is variable across allelic conditions; multiple sources emphasize lack of clear genotype–phenotype correlation and possible modifying factors. (mahmood2021anovelsplicesite pages 2-5, wygledowskapromienska2024alandislandeye pages 1-2)

Epidemiology

  • A case report/review cited an estimated birth prevalence of AIED ~1 in 22,000 live-born males (secondary reporting within a case report; not independently validated in retrieved evidence set). (calderon2025anewphenotypic pages 1-2)
  • Robust prevalence/incidence estimates for CACNA1F-related retinopathy overall were not identified in retrieved evidence.

10. Diagnostics

Key diagnostic concept

Electrophysiology is central. Multiple sources emphasize full-field ERG as the key diagnostic test, especially when clinical symptoms are atypical.

Clinical tests and findings

  • Full-field ERG (ISCEV): pathognomonic electronegative/negative ERG pattern (Schubert–Bornschein), reflecting bipolar cell pathway dysfunction. (marziali2023opticnerveinvolvement pages 1-6, durajczyk2025congenitalstationarynight pages 10-12, leahy2021opticatrophyand pages 1-2)
  • ON–OFF ERG: differentiates complete vs incomplete CSNB based on ON vs ON+OFF bipolar cell dysfunction patterns. (durajczyk2025congenitalstationarynight pages 10-12)
  • OCT: may show inner retinal thinning (GCL-IPL) and/or reduced pRNFL/GCC thickness; foveal hypoplasia, retinoschisis can be present in spectrum cases. (leahy2021opticatrophyand pages 7-8, marziali2023opticnerveinvolvement pages 6-10, wygledowskapromienska2024alandislandeye pages 1-2)
  • mfERG / pVEP: used as adjuncts in CSNB cases (cone system dysfunction, prolonged peak times/latencies). (durajczyk2025congenitalstationarynight pages 12-14, durajczyk2025congenitalstationarynight pages 5-10)

Diagnostic yield / genetic testing strategy

  • A Swedish IRD cohort re-investigation (322-gene NGS panel) achieved 65% overall molecular diagnostic yield, with CACNA1F accounting for ~3% among prevalent solved genes reported. (areblom2023adescriptionof pages 1-2)
  • Diagnostic modalities used in CACNA1F cohorts include WES and custom targeted NGS panels. (marziali2023opticnerveinvolvement pages 6-10)

Differential diagnosis (electronegative ERG)

A CSNB review highlights that electronegative ERG has a differential including unilateral causes (ischemia, siderosis) and bilateral causes (autoimmune retinopathy, vitamin A deficiency, photoreceptor dystrophies), supporting the need for careful interpretation and genetic confirmation. (durajczyk2025congenitalstationarynight pages 10-12)

Diagnostic pitfall (photophobia without night blindness)

A case series emphasizes that photophobia can be the presenting symptom, making CACNA1F-CSNB2 harder to recognize unless extended ffERG is performed. (marziali2023opticnerveinvolvement pages 1-6)

11. Outcome / Prognosis

Visual prognosis

  • Cohort data indicate persistent reduced VA and high myopia are common, with evidence for stable clinical course in some domains (e.g., stable BCVA and stable pRNFL over years in a multicenter series). (marziali2023opticnerveinvolvement pages 6-10, marziali2023opticnerveinvolvement pages 10-14)

Morbidity and disability

Formal disability/QoL scales were not retrieved; functional limitation is supported by reduced acuity and refractive error burden. (leahy2021opticatrophyand pages 3-6)

Mortality

No disease-specific mortality is expected or reported in the retrieved evidence.

12. Treatment

Current real-world management

Direct guidelines for supportive care (e.g., refractive correction, low-vision support) were not described in the retrieved evidence set; such interventions are standard in inherited retinal disease care but are not cited here.

Emerging/experimental therapeutics

Gene therapy and gene-based strategies (preclinical; expert review)

A 2025 review focused on Cav1.4-related retinal channelopathies describes several experimental gene-based strategies (preclinical), while emphasizing major translational barriers: - Strategies discussed include β2 subunit augmentation (smaller gene; potentially AAV-packable) to help restore Cav1.4 channel protein in loss-of-function contexts. (ganglberger2025exploringthepotential pages 12-13) - Experimental attempts include in vivo electroporation to reintroduce Cav1.4α1 with partial functional recovery in animal models, and other synapse-restoration approaches, but the review notes limitations such as low transfection efficiency, small sample sizes, and complications. (ganglberger2025exploringthepotential pages 13-15) - A central limitation is CACNA1F gene size exceeding single-AAV packaging, motivating dual-AAV approaches and other delivery innovations; the authors conclude approaches are not yet ready for routine clinical translation. (ganglberger2025exploringthepotential pages 15-16)

Pharmacologic approaches (hypothesis-level, preclinical)

In a Cav1.4-IT mouse study, acute reduction of Ca2+ influx by calcium channel blockade did not rescue synaptic transmission deficits, but the authors propose that long-term low-dose Ca2+ channel blocker treatment might reduce Ca2+ toxicity without major loss of ganglion cell responses. (zanetti2021functionofcone pages 1-2)

Clinical trials

In the clinical trial searches performed, no CACNA1F-specific retinal interventional trials were identified. One retrieved trial involving Cav1.4 addressed psoriasis immunology rather than retinal disease (NCT04459780, not cited in mechanistic/retinal evidence).

MAXO suggestions (management actions; non-exhaustive)

  • Genetic testing MAXO:0000127 (general)
  • Low vision rehabilitation MAXO:0000662 (general)
  • Gene therapy procedure MAXO:0001001 (general; experimental/preclinical context)

13. Prevention

Primary prevention

Not applicable for a Mendelian X-linked disorder (no environmental prevention identified in retrieved evidence).

Secondary prevention

  • Genetic counseling and cascade testing are supported indirectly by the X-linked inheritance pattern and carrier state discussion. (mahmood2021anovelsplicesite pages 1-2, wygledowskapromienska2024alandislandeye pages 1-2)

14. Other Species / Natural Disease

The retrieved evidence set mentions multi-species research models (rat, zebrafish), but does not document naturally occurring veterinary disease caused by CACNA1F variants.

15. Model Organisms

Mouse models (key examples)

  • Cav1.4 KO: severe synaptic defects and functional blindness, often more severe than human disease. (maddox2024anonconductingrole pages 1-2, ganglberger2025exploringthepotential pages 6-9)
  • G369i KI (non-conducting Cav1.4): preserves photopic visual behavior despite synaptic abnormalities, supporting non-conducting roles and homeostatic plasticity. (maddox2024anonconductingrole pages 1-2)
  • I756T / Cav1.4-IT KI (gain-of-function): produces ERG abnormalities similar to human CSNB2 with impaired cone pathways and sprouting. (zanetti2021functionofcone pages 1-2)
  • Cone-rich “Conefull” crosses: Conefull:α1F KO vs Conefull:α2δ4 KO recapitulate severe vs milder cone synaptopathy phenotypes and enable cone-pathway-focused mechanistic studies. (laird2023mouseallconeretina pages 1-2)

Other species

  • A Cav1.4 review summarizes rat models (e.g., p.R981X) and zebrafish cacna1fa models showing cone ERG and vision loss phenotypes. (ganglberger2025exploringthepotential pages 4-6)

Summary Table (phenotypic spectrum and quantitative markers)

The following table compiles key disease entities, diagnostic hallmarks, and quantitative cohort findings useful for a disease knowledge base entry.

Phenotype/entity (with OMIM) Typical onset/course Key symptoms/signs (HPO suggestions inline) Key diagnostic tests/findings (ERG/OCT) Quantitative data (VA, refractive error, OCT thickness, frequencies) Key citations (DOI/URL and year)
CSNB2A / incomplete CSNB (OMIM #300071) Congenital or early-childhood onset; classically non-progressive/stationary, though phenotypic variability is recognized across CACNA1F-associated disease (marziali2023opticnerveinvolvement pages 1-6, mahmood2021anovelsplicesite pages 1-2, mahmood2021anovelsplicesite pages 5-8) Nyctalopia [HP:0000662], reduced visual acuity [HP:0007663], myopia/high myopia [HP:0000545/HP:0011003], nystagmus [HP:0000639], strabismus [HP:0000486], photophobia [HP:0000613], red-green color vision defect/dyschromatopsia [HP:0000654] (leahy2021opticatrophyand pages 1-2, leahy2021opticatrophyand pages 3-6, mahmood2021anovelsplicesite pages 1-2) Full-field ERG shows the characteristic electronegative/negative Schubert-Bornschein pattern with preserved or relatively preserved a-wave and reduced b-wave, indicating bipolar cell dysfunction; OCT may show inner retinal thinning/GCL-IPL loss and sometimes fundus changes mainly related to myopia (wygledowskapromienska2024alandislandeye pages 1-2, marziali2023opticnerveinvolvement pages 1-6, leahy2021opticatrophyand pages 6-7) In a molecularly confirmed cohort, mean distance VA 0.42 LogMAR; myopia in 15/22 (68%), mean spherical equivalent −6.32 D; abnormal color vision in 6/21; mean GCL-IPL thickness 55.00 µm vs 84.57 µm in controls; optic disc pallor in 21/22 (leahy2021opticatrophyand pages 1-2, leahy2021opticatrophyand pages 3-6, leahy2021opticatrophyand pages 7-8) Leahy 2021, doi:10.3390/genes12030330, https://doi.org/10.3390/genes12030330 (leahy2021opticatrophyand pages 1-2, leahy2021opticatrophyand pages 3-6, leahy2021opticatrophyand pages 7-8); Mahmood 2021, doi:10.3390/genes12020171, https://doi.org/10.3390/genes12020171 (mahmood2021anovelsplicesite pages 1-2); Schaare 2023, doi:10.3390/genes14020400, https://doi.org/10.3390/genes14020400 (schaare2023concomitantcalciumchannelopathies pages 1-2)
Åland Island eye disease (AIED) (OMIM #300600) Early-childhood onset; traditionally considered an incomplete/non-progressive CACNA1F disorder overlapping strongly with iCSNB/CSNB2A (mahmood2021anovelsplicesite pages 1-2, mahmood2021anovelsplicesite pages 5-8) Nystagmus [HP:0000639], low visual acuity [HP:0007663], high myopia [HP:0011003], protan/red-green color vision defect [HP:0000654], retinal hypopigmentation/ocular hypopigmentation [HP:0011508], iris transillumination [HP:0001088], foveal hypoplasia [HP:0007368], nyctalopia [HP:0000662] (wygledowskapromienska2024alandislandeye pages 1-2, mahmood2021anovelsplicesite pages 1-2) ffERG: attenuated dark-adapted a-waves with abolished b-waves producing a negative ERG; OCT can show retinoschisis and foveal hypoplasia; phenotype may be electrophysiologically indistinguishable from CSNB2A in some patients (wygledowskapromienska2024alandislandeye pages 1-2, mahmood2021anovelsplicesite pages 5-8) Case-level data: 57-year-old man with symptoms since early childhood had bilateral high myopia, diffuse retinal thinning/hypopigmentation, retinoschisis in one eye, foveal hypoplasia in the other; DA 3.0 a-waves attenuated and b-waves abolished; pathogenic hemizygous c.4051C>T stop-gain variant reported (wygledowskapromienska2024alandislandeye pages 1-2) Wyględowska-Promieńska 2024, doi:10.3390/ijms25052928, https://doi.org/10.3390/ijms25052928 (wygledowskapromienska2024alandislandeye pages 1-2); Mahmood 2021, doi:10.3390/genes12020171, https://doi.org/10.3390/genes12020171 (mahmood2021anovelsplicesite pages 1-2, mahmood2021anovelsplicesite pages 5-8); Schaare 2023, doi:10.3390/genes14020400, https://doi.org/10.3390/genes14020400 (schaare2023concomitantcalciumchannelopathies pages 1-2)
CORDX3 / X-linked cone-rod dystrophy type 3 (OMIM #300476) Often progressive and may present later than stationary forms; adult-onset/progressive decline in refraction, acuity, color vision, and fields is described, but some recent reports include earlier-onset/high-myopia presentations (wygledowskapromienska2024alandislandeye pages 1-2, marziali2023opticnerveinvolvement pages 1-6) Decreased visual acuity [HP:0007663], high myopia [HP:0011003], dyschromatopsia/color vision defect [HP:0000654], photophobia [HP:0000613], visual field abnormality [HP:0001123], macular outer retinal abnormality/atrophy [HP:0007754] (wygledowskapromienska2024alandislandeye pages 1-2, calderon2025anewphenotypic pages 5-7) ERG in cone-rod dystrophy presentations may show markedly reduced/non-recordable photopic responses with reduced scotopic responses; OCT/fundus may show macular outer retinal structural abnormalities; genetic confirmation is essential because phenotype overlaps other IRDs (calderon2025anewphenotypic pages 5-7, calderon2025anewphenotypic pages 2-5) Family study reported 2 X-linked CORD probands with CACNA1F variants (c.2201del, c.245G>A), both with high myopia and macular outer structural abnormalities; broader reviews note progressive deterioration in acuity, color vision, and visual fields in CORDX3 (wygledowskapromienska2024alandislandeye pages 1-2, calderon2025anewphenotypic pages 5-7) Wyględowska-Promieńska 2024, doi:10.3390/ijms25052928, https://doi.org/10.3390/ijms25052928 (wygledowskapromienska2024alandislandeye pages 1-2); Calderon 2025, doi:10.7759/cureus.82577, https://doi.org/10.7759/cureus.82577 (calderon2025anewphenotypic pages 5-7, calderon2025anewphenotypic pages 2-5); Schaare 2023, doi:10.3390/genes14020400, https://doi.org/10.3390/genes14020400 (schaare2023concomitantcalciumchannelopathies pages 1-2)
CACNA1F-related disease with optic nerve involvement Early-onset/congenital phenotype with optic nerve changes that appear largely stable over time rather than progressive optic neuropathy (marziali2023opticnerveinvolvement pages 10-14, marziali2023opticnerveinvolvement pages 6-10, marziali2023opticnerveinvolvement pages 20-27) Optic disc pallor/optic atrophy [HP:0000648/HP:0000649], reduced peripapillary RNFL [suggested retinal nerve fiber layer thinning], ganglion cell complex thinning [HP:0031610-like inner retinal thinning], reduced visual acuity [HP:0007663], myopia [HP:0000545], occasional foveal hypoplasia [HP:0007368] (leahy2021opticatrophyand pages 1-2, marziali2023opticnerveinvolvement pages 6-10, marziali2023opticnerveinvolvement pages 20-27) SD-OCT shows bilateral low pRNFL and GCC/GCL thickness; ffERG remains pathognomonic with electronegative dark-adapted responses; MRI can be unremarkable, supporting retinal/optic pathway structural involvement without gross intracranial abnormality (marziali2023opticnerveinvolvement pages 6-10, marziali2023opticnerveinvolvement pages 20-27) Multicenter series: 12 patients, mean follow-up 11.63 years (range 6–18); myopia ranged from −6.00 D to −21.00 D in some cases; visual acuity examples 0.2–0.7 LogMAR and longitudinally stable; pRNFL low in all patients with stability over 1–6 years in those followed serially. Separate 22-subject cohort: optic disc pallor in 21/22, mean pRNFL 68.67 µm, temporal RNFL 51.33 µm, mean GCL-IPL 54.50–55.00 µm (marziali2023opticnerveinvolvement pages 6-10, marziali2023opticnerveinvolvement pages 20-27, leahy2021opticatrophyand pages 7-8, leahy2021opticatrophyand pages 1-2) Marziali 2023, doi:10.1080/13816810.2022.2132514, https://doi.org/10.1080/13816810.2022.2132514 (marziali2023opticnerveinvolvement pages 10-14, marziali2023opticnerveinvolvement pages 6-10, marziali2023opticnerveinvolvement pages 20-27); Leahy 2021, doi:10.3390/genes12030330, https://doi.org/10.3390/genes12030330 (leahy2021opticatrophyand pages 1-2, leahy2021opticatrophyand pages 7-8)

Table: This table summarizes the major CACNA1F-related retinal disease entities, highlighting their clinical overlap and the most useful quantitative findings from ERG and OCT studies. It is useful for comparing stationary and progressive presentations and for identifying features that support diagnosis.

Notes on evidence limitations

  • PMID limitation: Many retrieved sources are available via DOI/URL in the evidence set; PubMed IDs were not provided in the tool outputs and are therefore not asserted.
  • Ontology IDs: MONDO/Orphanet/ICD/MeSH identifiers were not extractable from the retrieved full texts; only OMIM IDs were available.
  • Population epidemiology: High-quality population prevalence/incidence data for CACNA1F-related retinopathy were not identified in the retrieved evidence set.

References

  1. (marziali2023opticnerveinvolvement pages 1-6): Elisa Marziali, Filip Van Den Broeck, Sara Bargiacchi, Pina Fortunato, Roberto Caputo, Andrea Sodi, Julie De Zaeytijd, Vittoria Murro, Dario Pasquale Mucciolo, Dario Giorgio, Ilaria Passerini, Viviana Palazzo, Francesca Peluso, Elfride de Baere, Christina Zeitz, Bart P. Leroy, Jacopo Secci, and Giacomo M. Bacci. Optic nerve involvement in cacna1f-related disease: observations from a multicentric case series. Ophthalmic Genetics, 44:152-162, Dec 2023. URL: https://doi.org/10.1080/13816810.2022.2132514, doi:10.1080/13816810.2022.2132514. This article has 3 citations and is from a peer-reviewed journal.

  2. (wygledowskapromienska2024alandislandeye pages 1-2): Dorota Wyględowska-Promieńska, Marta Świerczyńska, Dorota Śpiewak, Dorota Pojda-Wilczek, Agnieszka Tronina, Mariola Dorecka, and Adrian Smędowski. Aland island eye disease with retinoschisis in the clinical spectrum of cacna1f-associated retinopathy—a case report. International Journal of Molecular Sciences, 25:2928, Mar 2024. URL: https://doi.org/10.3390/ijms25052928, doi:10.3390/ijms25052928. This article has 4 citations.

  3. (mahmood2021anovelsplicesite pages 5-8): Usman Mahmood, Cécile Méjécase, Syed M. A. Ali, Mariya Moosajee, and Igor Kozak. A novel splice-site variant in cacna1f causes a phenotype synonymous with åland island eye disease and incomplete congenital stationary night blindness. Genes, 12:171, Jan 2021. URL: https://doi.org/10.3390/genes12020171, doi:10.3390/genes12020171. This article has 20 citations.

  4. (mahmood2021anovelsplicesite pages 1-2): Usman Mahmood, Cécile Méjécase, Syed M. A. Ali, Mariya Moosajee, and Igor Kozak. A novel splice-site variant in cacna1f causes a phenotype synonymous with åland island eye disease and incomplete congenital stationary night blindness. Genes, 12:171, Jan 2021. URL: https://doi.org/10.3390/genes12020171, doi:10.3390/genes12020171. This article has 20 citations.

  5. (schaare2023concomitantcalciumchannelopathies pages 1-2): Donna Schaare, Sara M. Sarasua, Laina Lusk, Shridhar Parthasarathy, Liangjiang Wang, Ingo Helbig, and Luigi Boccuto. Concomitant calcium channelopathies involving cacna1a and cacna1f: a case report and review of the literature. Genes, 14:400, Feb 2023. URL: https://doi.org/10.3390/genes14020400, doi:10.3390/genes14020400. This article has 5 citations.

  6. (marziali2023opticnerveinvolvement pages 14-20): Elisa Marziali, Filip Van Den Broeck, Sara Bargiacchi, Pina Fortunato, Roberto Caputo, Andrea Sodi, Julie De Zaeytijd, Vittoria Murro, Dario Pasquale Mucciolo, Dario Giorgio, Ilaria Passerini, Viviana Palazzo, Francesca Peluso, Elfride de Baere, Christina Zeitz, Bart P. Leroy, Jacopo Secci, and Giacomo M. Bacci. Optic nerve involvement in cacna1f-related disease: observations from a multicentric case series. Ophthalmic Genetics, 44:152-162, Dec 2023. URL: https://doi.org/10.1080/13816810.2022.2132514, doi:10.1080/13816810.2022.2132514. This article has 3 citations and is from a peer-reviewed journal.

  7. (marziali2023opticnerveinvolvement pages 6-10): Elisa Marziali, Filip Van Den Broeck, Sara Bargiacchi, Pina Fortunato, Roberto Caputo, Andrea Sodi, Julie De Zaeytijd, Vittoria Murro, Dario Pasquale Mucciolo, Dario Giorgio, Ilaria Passerini, Viviana Palazzo, Francesca Peluso, Elfride de Baere, Christina Zeitz, Bart P. Leroy, Jacopo Secci, and Giacomo M. Bacci. Optic nerve involvement in cacna1f-related disease: observations from a multicentric case series. Ophthalmic Genetics, 44:152-162, Dec 2023. URL: https://doi.org/10.1080/13816810.2022.2132514, doi:10.1080/13816810.2022.2132514. This article has 3 citations and is from a peer-reviewed journal.

  8. (leahy2021opticatrophyand pages 3-6): Kate E Leahy, Tom Wright, Monika K Grudzinska Pechhacker, Isabelle Audo, Anupreet Tumber, Erika Tavares, Heather MacDonald, Jeff Locke, Cynthia VandenHoven, Christina Zeitz, Elise Heon, J Raymond Buncic, and Ajoy Vincent. Optic atrophy and inner retinal thinning in cacna1f-related congenital stationary night blindness. Genes, 12:330, Feb 2021. URL: https://doi.org/10.3390/genes12030330, doi:10.3390/genes12030330. This article has 17 citations.

  9. (laird2023mouseallconeretina pages 1-2): Joseph G. Laird, Ariel Kopel, Colten K. Lankford, and Sheila A. Baker. Mouse all-cone retina models of cav1.4 synaptopathy. Frontiers in Molecular Neuroscience, Apr 2023. URL: https://doi.org/10.3389/fnmol.2023.1155955, doi:10.3389/fnmol.2023.1155955. This article has 2 citations.

  10. (maddox2024anonconductingrole pages 1-2): J Wesley Maddox, Gregory J Ordemann, Juan de la Rosa Vázquez, Angie Huang, Christof Gault, Serena R Wisner, Kate Randall, Daiki Futagi, Nihal A Salem, R Dayne Mayfield, Boris V Zemelman, Steven H DeVries, Mrinalini Hoon, and Amy Lee. A non-conducting role of the cav1.4 ca2+ channel drives homeostatic plasticity at the cone photoreceptor synapse. eLife, Nov 2024. URL: https://doi.org/10.7554/elife.94908.4, doi:10.7554/elife.94908.4. This article has 7 citations and is from a domain leading peer-reviewed journal.

  11. (ganglberger2025exploringthepotential pages 1-2): Matthias Ganglberger and Alexandra Koschak. Exploring the potential for gene therapy in cav1.4-related retinal channelopathies. Channels, Mar 2025. URL: https://doi.org/10.1080/19336950.2025.2480089, doi:10.1080/19336950.2025.2480089. This article has 0 citations and is from a peer-reviewed journal.

  12. (schaare2023concomitantcalciumchannelopathies pages 12-14): Donna Schaare, Sara M. Sarasua, Laina Lusk, Shridhar Parthasarathy, Liangjiang Wang, Ingo Helbig, and Luigi Boccuto. Concomitant calcium channelopathies involving cacna1a and cacna1f: a case report and review of the literature. Genes, 14:400, Feb 2023. URL: https://doi.org/10.3390/genes14020400, doi:10.3390/genes14020400. This article has 5 citations.

  13. (heigl2023characterizationoftwo pages 1-2): Thomas Heigl, Michael A. Netzer, Lucia Zanetti, Matthias Ganglberger, Monica L. Fernández-Quintero, and Alexandra Koschak. Characterization of two pathological gating-charge substitutions in cav1.4 l-type calcium channels. Channels, Mar 2023. URL: https://doi.org/10.1080/19336950.2023.2192360, doi:10.1080/19336950.2023.2192360. This article has 2 citations and is from a peer-reviewed journal.

  14. (leahy2021opticatrophyand pages 1-2): Kate E Leahy, Tom Wright, Monika K Grudzinska Pechhacker, Isabelle Audo, Anupreet Tumber, Erika Tavares, Heather MacDonald, Jeff Locke, Cynthia VandenHoven, Christina Zeitz, Elise Heon, J Raymond Buncic, and Ajoy Vincent. Optic atrophy and inner retinal thinning in cacna1f-related congenital stationary night blindness. Genes, 12:330, Feb 2021. URL: https://doi.org/10.3390/genes12030330, doi:10.3390/genes12030330. This article has 17 citations.

  15. (leahy2021opticatrophyand pages 6-7): Kate E Leahy, Tom Wright, Monika K Grudzinska Pechhacker, Isabelle Audo, Anupreet Tumber, Erika Tavares, Heather MacDonald, Jeff Locke, Cynthia VandenHoven, Christina Zeitz, Elise Heon, J Raymond Buncic, and Ajoy Vincent. Optic atrophy and inner retinal thinning in cacna1f-related congenital stationary night blindness. Genes, 12:330, Feb 2021. URL: https://doi.org/10.3390/genes12030330, doi:10.3390/genes12030330. This article has 17 citations.

  16. (marziali2023opticnerveinvolvement pages 20-27): Elisa Marziali, Filip Van Den Broeck, Sara Bargiacchi, Pina Fortunato, Roberto Caputo, Andrea Sodi, Julie De Zaeytijd, Vittoria Murro, Dario Pasquale Mucciolo, Dario Giorgio, Ilaria Passerini, Viviana Palazzo, Francesca Peluso, Elfride de Baere, Christina Zeitz, Bart P. Leroy, Jacopo Secci, and Giacomo M. Bacci. Optic nerve involvement in cacna1f-related disease: observations from a multicentric case series. Ophthalmic Genetics, 44:152-162, Dec 2023. URL: https://doi.org/10.1080/13816810.2022.2132514, doi:10.1080/13816810.2022.2132514. This article has 3 citations and is from a peer-reviewed journal.

  17. (calderon2025anewphenotypic pages 5-7): Ricardo A Murati Calderon and Natalio Izquierdo. A new phenotypic expression in a patient with a mutation in the cacna1f gene. Cureus, Apr 2025. URL: https://doi.org/10.7759/cureus.82577, doi:10.7759/cureus.82577. This article has 2 citations.

  18. (mahmood2021anovelsplicesite pages 2-5): Usman Mahmood, Cécile Méjécase, Syed M. A. Ali, Mariya Moosajee, and Igor Kozak. A novel splice-site variant in cacna1f causes a phenotype synonymous with åland island eye disease and incomplete congenital stationary night blindness. Genes, 12:171, Jan 2021. URL: https://doi.org/10.3390/genes12020171, doi:10.3390/genes12020171. This article has 20 citations.

  19. (mahmood2021anovelsplicesite pages 8-8): Usman Mahmood, Cécile Méjécase, Syed M. A. Ali, Mariya Moosajee, and Igor Kozak. A novel splice-site variant in cacna1f causes a phenotype synonymous with åland island eye disease and incomplete congenital stationary night blindness. Genes, 12:171, Jan 2021. URL: https://doi.org/10.3390/genes12020171, doi:10.3390/genes12020171. This article has 20 citations.

  20. (ridgeway2024novelsplicealteringvariants pages 16-17): Anna R. Ridgeway, Ciara Shortall, Laura K. Finnegan, Róisín Long, Evan Matthews, Adrian Dockery, Ella Kopčić, Laura Whelan, Claire Kirk, Giuliana Silvestri, Jacqueline Turner, David J. Keegan, Sophia Millington-Ward, Naomi Chadderton, Emma Duignan, Paul F. Kenna, and G. Jane Farrar. Novel splice-altering variants in the chm and cacna1f genes causative of x-linked choroideremia and cone dystrophy. Genes, 16:25, Dec 2024. URL: https://doi.org/10.3390/genes16010025, doi:10.3390/genes16010025. This article has 2 citations.

  21. (calderon2025anewphenotypic pages 2-5): Ricardo A Murati Calderon and Natalio Izquierdo. A new phenotypic expression in a patient with a mutation in the cacna1f gene. Cureus, Apr 2025. URL: https://doi.org/10.7759/cureus.82577, doi:10.7759/cureus.82577. This article has 2 citations.

  22. (zanetti2021functionofcone pages 1-2): Lucia Zanetti, Irem Kilicarslan, Michael Netzer, Norbert Babai, Hartwig Seitter, and Alexandra Koschak. Function of cone and cone-related pathways in cav1.4 it mice. Scientific Reports, Feb 2021. URL: https://doi.org/10.1038/s41598-021-82210-7, doi:10.1038/s41598-021-82210-7. This article has 13 citations and is from a peer-reviewed journal.

  23. (ganglberger2025exploringthepotential pages 9-10): Matthias Ganglberger and Alexandra Koschak. Exploring the potential for gene therapy in cav1.4-related retinal channelopathies. Channels, Mar 2025. URL: https://doi.org/10.1080/19336950.2025.2480089, doi:10.1080/19336950.2025.2480089. This article has 0 citations and is from a peer-reviewed journal.

  24. (leahy2021opticatrophyand pages 7-8): Kate E Leahy, Tom Wright, Monika K Grudzinska Pechhacker, Isabelle Audo, Anupreet Tumber, Erika Tavares, Heather MacDonald, Jeff Locke, Cynthia VandenHoven, Christina Zeitz, Elise Heon, J Raymond Buncic, and Ajoy Vincent. Optic atrophy and inner retinal thinning in cacna1f-related congenital stationary night blindness. Genes, 12:330, Feb 2021. URL: https://doi.org/10.3390/genes12030330, doi:10.3390/genes12030330. This article has 17 citations.

  25. (ganglberger2025exploringthepotential pages 6-9): Matthias Ganglberger and Alexandra Koschak. Exploring the potential for gene therapy in cav1.4-related retinal channelopathies. Channels, Mar 2025. URL: https://doi.org/10.1080/19336950.2025.2480089, doi:10.1080/19336950.2025.2480089. This article has 0 citations and is from a peer-reviewed journal.

  26. (calderon2025anewphenotypic pages 1-2): Ricardo A Murati Calderon and Natalio Izquierdo. A new phenotypic expression in a patient with a mutation in the cacna1f gene. Cureus, Apr 2025. URL: https://doi.org/10.7759/cureus.82577, doi:10.7759/cureus.82577. This article has 2 citations.

  27. (durajczyk2025congenitalstationarynight pages 10-12): Magdalena Durajczyk and Wojciech Lubiński. Congenital stationary night blindness (csnb)—case reports and review of current knowledge. Feb 2025. URL: https://doi.org/10.3390/jcm14041238, doi:10.3390/jcm14041238. This article has 9 citations.

  28. (durajczyk2025congenitalstationarynight pages 12-14): Magdalena Durajczyk and Wojciech Lubiński. Congenital stationary night blindness (csnb)—case reports and review of current knowledge. Feb 2025. URL: https://doi.org/10.3390/jcm14041238, doi:10.3390/jcm14041238. This article has 9 citations.

  29. (durajczyk2025congenitalstationarynight pages 5-10): Magdalena Durajczyk and Wojciech Lubiński. Congenital stationary night blindness (csnb)—case reports and review of current knowledge. Feb 2025. URL: https://doi.org/10.3390/jcm14041238, doi:10.3390/jcm14041238. This article has 9 citations.

  30. (areblom2023adescriptionof pages 1-2): Maria Areblom, Sten Kjellström, Sten Andréasson, Anders Öhberg, Lotta Gränse, and Ulrika Kjellström. A description of the yield of genetic reinvestigation in patients with inherited retinal dystrophies and previous inconclusive genetic testing. Genes, 14:1413, Jul 2023. URL: https://doi.org/10.3390/genes14071413, doi:10.3390/genes14071413. This article has 8 citations.

  31. (marziali2023opticnerveinvolvement pages 10-14): Elisa Marziali, Filip Van Den Broeck, Sara Bargiacchi, Pina Fortunato, Roberto Caputo, Andrea Sodi, Julie De Zaeytijd, Vittoria Murro, Dario Pasquale Mucciolo, Dario Giorgio, Ilaria Passerini, Viviana Palazzo, Francesca Peluso, Elfride de Baere, Christina Zeitz, Bart P. Leroy, Jacopo Secci, and Giacomo M. Bacci. Optic nerve involvement in cacna1f-related disease: observations from a multicentric case series. Ophthalmic Genetics, 44:152-162, Dec 2023. URL: https://doi.org/10.1080/13816810.2022.2132514, doi:10.1080/13816810.2022.2132514. This article has 3 citations and is from a peer-reviewed journal.

  32. (ganglberger2025exploringthepotential pages 12-13): Matthias Ganglberger and Alexandra Koschak. Exploring the potential for gene therapy in cav1.4-related retinal channelopathies. Channels, Mar 2025. URL: https://doi.org/10.1080/19336950.2025.2480089, doi:10.1080/19336950.2025.2480089. This article has 0 citations and is from a peer-reviewed journal.

  33. (ganglberger2025exploringthepotential pages 13-15): Matthias Ganglberger and Alexandra Koschak. Exploring the potential for gene therapy in cav1.4-related retinal channelopathies. Channels, Mar 2025. URL: https://doi.org/10.1080/19336950.2025.2480089, doi:10.1080/19336950.2025.2480089. This article has 0 citations and is from a peer-reviewed journal.

  34. (ganglberger2025exploringthepotential pages 15-16): Matthias Ganglberger and Alexandra Koschak. Exploring the potential for gene therapy in cav1.4-related retinal channelopathies. Channels, Mar 2025. URL: https://doi.org/10.1080/19336950.2025.2480089, doi:10.1080/19336950.2025.2480089. This article has 0 citations and is from a peer-reviewed journal.

  35. (ganglberger2025exploringthepotential pages 4-6): Matthias Ganglberger and Alexandra Koschak. Exploring the potential for gene therapy in cav1.4-related retinal channelopathies. Channels, Mar 2025. URL: https://doi.org/10.1080/19336950.2025.2480089, doi:10.1080/19336950.2025.2480089. This article has 0 citations and is from a peer-reviewed journal.

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