Carvajal syndrome is a rare autosomal recessive cardiocutaneous disorder caused by biallelic loss-of-function mutations in the desmoplakin (DSP) gene. It is characterized by the triad of dilated cardiomyopathy, woolly hair, and palmoplantar keratoderma, often with dental dysplasia. Heart failure typically manifests in childhood or teenage years, resulting in early morbidity. The condition was first described in Ecuadorian families with a homozygous C-terminal truncation (7901delG) that disrupts desmoplakin-intermediate filament interactions while preserving enough protein function to be compatible with embryonic development.
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name: Carvajal Syndrome
creation_date: "2026-04-04T00:00:00Z"
updated_date: "2026-04-26T06:39:38Z"
description: >-
Carvajal syndrome is a rare autosomal recessive cardiocutaneous disorder
caused by biallelic loss-of-function mutations in the desmoplakin (DSP) gene.
It is characterized by the triad of dilated cardiomyopathy, woolly hair, and
palmoplantar keratoderma, often with dental dysplasia. Heart failure typically
manifests in childhood or teenage years, resulting in early morbidity. The
condition was first described in Ecuadorian families with a homozygous
C-terminal truncation (7901delG) that disrupts desmoplakin-intermediate
filament interactions while preserving enough protein function to be
compatible with embryonic development.
category: Genetic
parents:
- Cardiocutaneous Syndrome
- Desmosomal Disease
disease_term:
preferred_term: arrhythmogenic cardiomyopathy with woolly hair and keratoderma
term:
id: MONDO:0011581
label: arrhythmogenic cardiomyopathy with wooly hair and keratoderma
prevalence:
- population: Global
percentage: Rare
inheritance:
- name: Autosomal Recessive
inheritance_term:
preferred_term: Autosomal recessive inheritance
term:
id: HP:0000007
label: Autosomal recessive inheritance
pathophysiology:
- name: Biallelic DSP Deficiency — Desmosome-IF Uncoupling
description: >-
Biallelic DSP mutations cause severe desmoplakin deficiency, disrupting
the critical link between desmosomal cadherins and the intermediate
filament (IF) network. The prototype mutation 7901delG produces a
truncated protein lacking the C domain of the tail region, which is
essential for IF attachment. This molecular defect underlies both the
cutaneous and cardiac manifestations of Carvajal syndrome.
genes:
- preferred_term: DSP
term:
id: hgnc:3052
label: DSP
molecular_functions:
- preferred_term: structural constituent of cytoskeleton
term:
id: GO:0005200
label: structural constituent of cytoskeleton
biological_processes:
- preferred_term: Desmosome organization
term:
id: GO:0002934
label: desmosome organization
modifier: DECREASED
- preferred_term: Cell-cell junction assembly
term:
id: GO:0007043
label: cell-cell junction assembly
modifier: DECREASED
evidence:
- reference: PMID:11063735
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
we describe the first recessive human mutation, 7901delG, in the
desmoplakin gene which causes a generalized striate keratoderma
particularly affecting the palmoplantar epidermis, woolly hair
and a dilated left ventricular cardiomyopathy
explanation: >-
Landmark paper identifying the DSP mutation causing Carvajal
syndrome and defining its cardiocutaneous phenotype.
downstream:
- target: Keratinocyte Adhesion Failure
description: >-
DSP truncation disrupts intermediate-filament anchoring in epidermal
desmosomes, weakening keratinocyte adhesion and collapsing the keratin
intermediate-filament network.
evidence:
- reference: PMID:11063735
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
Histology of the skin revealed large intercellular spaces and
clustering of desmosomes at the infrequent sites of keratinocyte
adhesion.
explanation: >-
The original affected-family report shows that the DSP truncation
produces keratinocyte adhesion failure in patient skin.
- target: Cardiomyocyte Desmosomal Uncoupling
description: >-
DSP mutation reduces the desmosome-intermediate filament linkage in
ventricular myocardium, beginning the cardiac path from mutation to
contractile and electrical disease.
evidence:
- reference: PMID:14761782
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
It is caused by a recessive deletion mutation in desmoplakin, an
intracellular protein that links desmosomal adhesion molecules to
intermediate filaments of the cytoskeleton.
explanation: >-
The cardiac pathology study identifies the same recessive DSP defect as
disrupting the core desmosome-intermediate filament linkage in heart
tissue.
- name: Keratinocyte Adhesion Failure
description: >-
In the epidermis, desmoplakin deficiency causes loosening of
intercellular connections, clustering of desmosomes at infrequent
adhesion sites, and perinuclear condensation of the keratin IF network
in suprabasal keratinocytes. This results in the characteristic
palmoplantar keratoderma and woolly hair.
cell_types:
- preferred_term: Keratinocyte
term:
id: CL:0000312
label: keratinocyte
locations:
- preferred_term: Skin of palm and sole
term:
id: UBERON:0013776
label: skin of palmar/plantar part of autopod
biological_processes:
- preferred_term: Cell-cell adhesion
term:
id: GO:0098609
label: cell-cell adhesion
modifier: DECREASED
- preferred_term: Intermediate filament cytoskeleton organization
term:
id: GO:0045104
label: intermediate filament cytoskeleton organization
modifier: DECREASED
evidence:
- reference: PMID:11063735
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
Histology of the skin revealed large intercellular spaces and
clustering of desmosomes at the infrequent sites of keratinocyte
adhesion. Immunohistochemistry of skin from the patients showed a
perinuclear localization of keratin in suprabasal keratinocytes,
suggesting a collapsed intermediate filament network.
explanation: >-
Demonstrates the desmosome-IF disruption mechanism at the cellular
level in keratinocytes.
downstream:
- target: Palmoplantar Keratoderma
description: >-
Keratinocyte adhesion failure in palmoplantar epidermis produces the
characteristic palmoplantar keratoderma phenotype.
evidence:
- reference: PMID:11063735
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
7901delG, in the desmoplakin gene which causes a generalized striate
keratoderma particularly affecting the palmoplantar epidermis
explanation: >-
This connects the upstream DSP-related epidermal adhesion defect to the
palmoplantar keratoderma phenotype.
- target: Woolly Hair
description: >-
Desmosomal dysfunction in ectodermal tissues produces the congenital
woolly-hair phenotype that accompanies palmoplantar keratoderma.
evidence:
- reference: PMID:11063735
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
7901delG, in the desmoplakin gene which causes a generalized striate
keratoderma particularly affecting the palmoplantar epidermis, woolly
hair and a dilated left ventricular cardiomyopathy.
explanation: >-
The original report places woolly hair downstream of the same recessive
DSP mutation causing the epidermal adhesion phenotype.
- name: Cardiomyocyte Desmosomal Uncoupling
description: >-
In the heart, desmoplakin deficiency weakens intercellular adhesion and
desmin anchoring at cardiomyocyte intercalated disks. This creates a
mechanically fragile myocardium and initiates the cardiac branch of the
mutation-to-phenotype pathograph.
cell_types:
- preferred_term: Cardiac muscle cell
term:
id: CL:0000746
label: cardiac muscle cell
locations:
- preferred_term: Heart
term:
id: UBERON:0000948
label: heart
biological_processes:
- preferred_term: Cell-cell adhesion
term:
id: GO:0098609
label: cell-cell adhesion
modifier: DECREASED
- preferred_term: Intermediate filament cytoskeleton organization
term:
id: GO:0045104
label: intermediate filament cytoskeleton organization
modifier: DECREASED
evidence:
- reference: PMID:14761782
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
The intermediate filament protein, desmin, which is known to bind
desmoplakin, showed a normal intracellular pattern of distribution but
failed to localize at intercalated disks.
explanation: >-
Shows that the DSP mutation disrupts desmin localization at
cardiomyocyte intercalated disks, providing a direct cardiac mechanism
upstream of dysfunction.
downstream:
- target: Intercalated Disk and Gap Junction Remodeling
description: >-
Desmoplakin uncoupling alters intercalated disk protein distribution and
reduces connexin43 signal at intercalated disks.
evidence:
- reference: PMID:14761782
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
We also observed markedly decreased amounts of specific immunoreactive
signal for desmoplakin, plakoglobin, and the gap junction protein,
connexin43, at intercalated disks.
explanation: >-
Patient myocardium showed intercalated disk and gap-junction protein
remodeling downstream of the DSP mutation.
- target: Innate Immune Susceptibility in DSP-Deficient Cardiomyocytes
causal_link_type: INDIRECT_KNOWN_INTERMEDIATES
intermediate_mechanisms:
- DSP-deficient engineered cardiomyocyte tissues show baseline innate immune activation and exaggerated responses to Toll-like receptor stimulation.
description: >-
DSP deficiency sensitizes cardiomyocytes to innate immune activation, a
provisional mechanism for myocarditis-like injury and stress-dependent
worsening in DSP cardiomyopathy.
evidence:
- reference: PMID:38768074
supports: SUPPORT
evidence_source: IN_VITRO
snippet: >-
At baseline, DSP-/- EHTs displayed a transcriptomic signature of innate
immune activation, which was mirrored by cytokine release.
explanation: >-
Human iPSC engineered heart tissue data provide model evidence for an
innate-immune branch downstream of DSP deficiency.
- name: Intercalated Disk and Gap Junction Remodeling
description: >-
Carvajal myocardium shows ultrastructural abnormalities of intercalated
disks with reduced desmoplakin, plakoglobin, and connexin43 signal at those
junctions. This remodeling plausibly links defective adhesion to both
contractile dysfunction and electrical instability.
cell_types:
- preferred_term: Cardiac muscle cell
term:
id: CL:0000746
label: cardiac muscle cell
locations:
- preferred_term: Heart
term:
id: UBERON:0000948
label: heart
biological_processes:
- preferred_term: Cell-cell adhesion
term:
id: GO:0098609
label: cell-cell adhesion
modifier: DECREASED
evidence:
- reference: PMID:14761782
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
We identified a unique cardiomyopathy characterized by ventricular
hypertrophy and dilatation, focal ventricular aneurysms, and distinct
ultrastructural abnormalities of intercalated disks
explanation: >-
Supports intercalated disk remodeling as a cardiac tissue mechanism in
Carvajal syndrome.
downstream:
- target: Contractile and Electrical Dysfunction
description: >-
Altered intercalated disk protein interactions provide the immediate
mechanistic basis for contractile impairment and electrical dysfunction.
evidence:
- reference: PMID:14761782
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
Altered protein-protein interactions at intercalated disks likely cause
both contractile and electrical dysfunction in Carvajal syndrome.
explanation: >-
The cardiac pathology abstract explicitly connects intercalated disk
remodeling to contractile and electrical dysfunction.
- name: Innate Immune Susceptibility in DSP-Deficient Cardiomyocytes
description: >-
Human iPSC-derived engineered heart tissues with DSP deletion or truncating
variants show baseline innate immune activation, cytokine release, and
hypersensitivity to TLR stimulation. This is a provisional DSP-cardiomyopathy
mechanism that may amplify contractile dysfunction during inflammatory or
mechanical stress.
mechanism_confidence: PROVISIONAL
cell_types:
- preferred_term: Cardiac muscle cell
term:
id: CL:0000746
label: cardiac muscle cell
biological_processes:
- preferred_term: Inflammatory response
term:
id: GO:0006954
label: inflammatory response
modifier: INCREASED
- preferred_term: Regulation of canonical NF-kappaB signal transduction
term:
id: GO:0043122
label: regulation of canonical NF-kappaB signal transduction
modifier: INCREASED
evidence:
- reference: PMID:38768074
supports: SUPPORT
evidence_source: IN_VITRO
snippet: >-
Importantly, DSP-/- EHTs were hypersensitive to Toll-like receptor (TLR)
stimulation, demonstrating more contractile dysfunction compared with
isogenic controls.
explanation: >-
Model evidence shows that DSP-deficient cardiomyocyte tissues have
exaggerated innate-immune responses with worse contractile function.
downstream:
- target: Contractile and Electrical Dysfunction
description: >-
Innate immune activation and cytokine release in DSP-deficient engineered
heart tissues worsens contractility and recapitulates myocarditis-like
electrical and contractile phenotypes.
evidence:
- reference: PMID:38768074
supports: SUPPORT
evidence_source: IN_VITRO
snippet: >-
Thus, EHTs replicate electrical and contractile phenotypes seen in
human myocarditis, implicating cytokine release as a key part of the
myogenic susceptibility to inflammation.
explanation: >-
Links the model-derived innate immune susceptibility mechanism to
downstream electrical and contractile dysfunction.
- name: Contractile and Electrical Dysfunction
description: >-
The downstream cardiac state in Carvajal syndrome combines impaired
contraction, ventricular dilation, and electrical dysfunction, producing
dilated cardiomyopathy and heart failure risk.
cell_types:
- preferred_term: Cardiac muscle cell
term:
id: CL:0000746
label: cardiac muscle cell
locations:
- preferred_term: Heart
term:
id: UBERON:0000948
label: heart
biological_processes:
- preferred_term: Cardiac muscle cell action potential
term:
id: GO:0086001
label: cardiac muscle cell action potential
modifier: ABNORMAL
evidence:
- reference: PMID:14761782
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
Altered protein-protein interactions at intercalated disks likely cause
both contractile and electrical dysfunction in Carvajal syndrome.
explanation: >-
The pathology study supports contractile and electrical dysfunction as a
downstream consequence of intercalated disk remodeling.
downstream:
- target: Dilated Cardiomyopathy
description: >-
Contractile impairment and ventricular remodeling manifest clinically as
dilated left ventricular cardiomyopathy.
evidence:
- reference: PMID:11063735
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
woolly hair and a dilated left ventricular cardiomyopathy.
explanation: >-
Connects the cardiac dysfunction branch to the named dilated
cardiomyopathy phenotype in affected patients.
- target: Ventricular Tachycardia
description: >-
Electrical instability caused by intercalated disk remodeling can manifest
as malignant ventricular arrhythmia in the Carvajal cardiomyopathy
spectrum.
evidence:
- reference: PMID:34317383
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
The patient was discharged following implantation of a single-lead
cardioverter-defibrillator. Two months after discharge, she was
hospitalized twice for recurrent episodes of incessant monomorphic
ventricular tachycardia unresponsive to medical therapy.
explanation: >-
Documents ventricular tachycardia downstream of DSP-related Carvajal
syndrome with arrhythmogenic cardiomyopathy.
phenotypes:
- category: Cardiovascular
name: Dilated Cardiomyopathy
frequency: Very frequent
description: >-
Dilated left ventricular cardiomyopathy manifests in childhood or
teenage years, often leading to heart failure and early morbidity.
phenotype_term:
preferred_term: Dilated cardiomyopathy
term:
id: HP:0001644
label: Dilated cardiomyopathy
evidence:
- reference: PMID:11063735
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
a dilated left ventricular cardiomyopathy. A number of the patients
with this syndromic disorder suffer heart failure in their teenage
years, resulting in early morbidity.
explanation: >-
Documents dilated cardiomyopathy with early heart failure.
- reference: PMID:37799505
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
We diagnosed a 7-year-old female patient with Carvajal syndrome
characterized by dilated cardiomyopathy, palmoplantar keratoderma,
woolly hair, and dental dysplasia
explanation: >-
Confirms childhood presentation with DCM.
sequelae:
- target: Congestive Heart Failure
description: >-
Dilated cardiomyopathy in Carvajal syndrome progresses to clinically
significant heart failure, often during childhood or adolescence.
evidence:
- reference: PMID:11063735
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
A number of the patients with this syndromic disorder suffer heart
failure in their teenage years, resulting in early morbidity.
explanation: >-
The original families showed heart failure as a downstream clinical
consequence of the dilated cardiomyopathy phenotype.
- category: Cardiovascular
name: Congestive Heart Failure
frequency: Frequent
severity: SEVERE
description: >-
Severe left-sided or decompensated heart failure can occur in childhood and
adolescence as the major morbidity of Carvajal cardiomyopathy.
phenotype_term:
preferred_term: Congestive heart failure
term:
id: HP:0001635
label: Congestive heart failure
evidence:
- reference: PMID:11063735
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
A number of the patients with this syndromic disorder suffer heart
failure in their teenage years, resulting in early morbidity.
explanation: >-
Documents adolescent heart failure in affected Carvajal families.
- reference: PMID:25516398
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
We report the case of a 3-year-old boy presenting with severe left-sided
heart failure with a preceding history of cutaneous abnormalities
including congenital alopecia, PPK, nail dystrophy, and follicular
hyperkeratosis on the extensor surfaces.
explanation: >-
Supports severe early-onset heart failure in the broader desmoplakin
cardiocutaneous spectrum.
- category: Cardiovascular
name: Ventricular Tachycardia
frequency: Occasional
severity: SEVERE
description: >-
Ventricular tachycardia reflects malignant electrical instability in the
Carvajal arrhythmogenic cardiomyopathy spectrum.
phenotype_term:
preferred_term: Ventricular tachycardia
term:
id: HP:0004756
label: Ventricular tachycardia
evidence:
- reference: PMID:34317383
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
The patient was discharged following implantation of a single-lead
cardioverter-defibrillator. Two months after discharge, she was
hospitalized twice for recurrent episodes of incessant monomorphic
ventricular tachycardia unresponsive to medical therapy.
explanation: >-
Describes recurrent monomorphic ventricular tachycardia in DSP-related
Carvajal syndrome with arrhythmogenic cardiomyopathy.
sequelae:
- target: Syncope
description: >-
Ventricular arrhythmias can cause transient cerebral hypoperfusion and
syncope in affected relatives.
evidence:
- reference: PMID:34317383
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
He was a competitive athlete with unexplained recurrent syncope,
low-voltage complexes on the ECG, and polymorphic ventricular ectopies
on 24-h Holter ECG.
explanation: >-
Links recurrent syncope with ventricular ectopy in a cardiocutaneous
relative from a Carvajal syndrome family.
- target: Sudden Cardiac Death
description: >-
Malignant ventricular arrhythmias place affected patients and relatives at
risk for sudden cardiac death.
evidence:
- reference: PMID:34317383
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
Her brother, with a history of scalp dermatitis and woolly hair from
infancy, died suddenly several years earlier at the age of 28 years.
explanation: >-
Documents sudden death in a cardiocutaneous relative from the
DSP-related Carvajal syndrome family.
- category: Cardiovascular
name: Syncope
frequency: Occasional
severity: MODERATE
description: >-
Syncope can occur as a warning symptom of ventricular arrhythmia in
Carvajal syndrome and related DSP cardiocutaneous disease.
phenotype_term:
preferred_term: Syncope
term:
id: HP:0001279
label: Syncope
evidence:
- reference: PMID:34317383
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
He was a competitive athlete with unexplained recurrent syncope,
low-voltage complexes on the ECG, and polymorphic ventricular ectopies on
24-h Holter ECG.
explanation: >-
Reports recurrent syncope with ventricular ectopy in the Carvajal
cardiocutaneous family history.
- reference: PMID:27617069
supports: SUPPORT
evidence_source: OTHER
snippet: >-
Thus, it would be of interest to get information about any
electrocardiographic abnormalities and whether she had a history of
syncope, vertigo or spells suggesting arrhythmia which are reported to
precede sudden death (7).
explanation: >-
Literature commentary identifies syncope-like spells as arrhythmic
warning symptoms reported before sudden death in Carvajal syndrome.
- category: Cardiovascular
name: Sudden Cardiac Death
frequency: Occasional
severity: SEVERE
description: >-
Sudden cardiac death is a severe arrhythmic outcome reported in Carvajal
syndrome and related DSP cardiocutaneous families.
phenotype_term:
preferred_term: Sudden cardiac death
term:
id: HP:0001645
label: Sudden cardiac death
evidence:
- reference: PMID:34317383
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
The patient was the mother of 2-year-old nonidentical male triplets. She
had a positive family history of sudden cardiac death.
explanation: >-
Documents sudden cardiac death in the DSP-related Carvajal syndrome family
history.
- reference: PMID:27617069
supports: SUPPORT
evidence_source: OTHER
snippet: >-
CS manifests frequently with arrhythmias, even leading to sudden death
(4-6).
explanation: >-
Literature commentary supports sudden death as a recognized arrhythmic
complication in Carvajal syndrome.
- category: Dermatologic
name: Palmoplantar Keratoderma
frequency: Very frequent
description: >-
Generalized striate keratoderma particularly affecting palmoplantar
skin, with thickened skin on palms and soles.
phenotype_term:
preferred_term: Palmoplantar keratoderma
term:
id: HP:0000982
label: Palmoplantar keratoderma
evidence:
- reference: PMID:11063735
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
a generalized striate keratoderma particularly affecting the
palmoplantar epidermis
explanation: >-
PPK is a defining feature of Carvajal syndrome.
- reference: PMID:26399581
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
The combination of PPK and hair shaft anomalies was recorded in 161
patients, and this association is at high risk of cardiac disease
(129/161, 80.1%).
explanation: >-
Systematic review evidence supports the palmoplantar keratoderma plus hair
shaft anomaly combination as a dermatologic warning signal for cardiac
involvement.
- category: Dermatologic
name: Woolly Hair
frequency: Very frequent
description: >-
Tightly curled woolly hair from birth, reflecting desmosomal
dysfunction in hair follicles.
phenotype_term:
preferred_term: Woolly hair
term:
id: HP:0002224
label: Woolly hair
evidence:
- reference: PMID:11063735
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
woolly hair
explanation: >-
Woolly hair is part of the Carvajal triad.
- category: Dental
name: Dental Dysplasia
frequency: Occasional
description: >-
Dental abnormalities reported in some patients.
phenotype_term:
preferred_term: Abnormality of the dentition
term:
id: HP:0000164
label: Abnormality of the dentition
evidence:
- reference: PMID:37799505
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
dilated cardiomyopathy, palmoplantar keratoderma, woolly hair,
and dental dysplasia
explanation: >-
Dental dysplasia documented as part of Carvajal phenotype.
genetic:
- name: DSP Biallelic Loss-of-Function Variants
association: Pathogenic Variants
gene_term:
preferred_term: DSP
term:
id: hgnc:3052
label: DSP
inheritance:
- name: Autosomal Recessive
inheritance_term:
preferred_term: Autosomal recessive inheritance
term:
id: HP:0000007
label: Autosomal recessive inheritance
features: >-
Homozygous or compound heterozygous DSP mutations. The prototype is
7901delG causing a C-terminal truncation. Heterozygous carriers are
unaffected or mildly affected.
variants:
- name: DSP 7901delG C-terminal truncation
description: >-
Prototype homozygous frameshift deletion reported in Ecuadorian families.
It produces a premature stop codon and truncates desmoplakin before the
C-domain tail region required for intermediate-filament attachment.
gene:
preferred_term: DSP
term:
id: hgnc:3052
label: DSP
clinical_significance: PATHOGENIC
type: frameshift truncating variant
evidence:
- reference: PMID:11063735
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
All tested affected members of three families from Ecuador were
homozygous for this mutation which produces a premature stop codon
leading to a truncated desmoplakin protein missing the C domain of the
tail region.
explanation: >-
Defines the canonical homozygous DSP truncation underlying Carvajal
syndrome.
- name: DSP c.4597C>T (p.Q1533X)
description: >-
Homozygous nonsense variant reported in a patient with dilated
cardiomyopathy, palmoplantar keratoderma, woolly hair, and dental
dysplasia; heterozygous carrier parents were unaffected.
gene:
preferred_term: DSP
term:
id: hgnc:3052
label: DSP
clinical_significance: PATHOGENIC
type: nonsense variant
evidence:
- reference: PMID:37799505
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
We diagnosed a 7-year-old female patient with Carvajal syndrome
characterized by dilated cardiomyopathy, palmoplantar keratoderma,
woolly hair, and dental dysplasia, who disclosed a novel homozygous
missense variant c.4597C > T (p.Q1533X) in exon 6 of the DSP gene found
for the first time.
explanation: >-
Adds a recent homozygous DSP variant to the mutation-to-phenotype path.
- name: DSP R1400X/R2284X compound heterozygous truncations
description: >-
Compound heterozygous DSP truncating variants reported with severe
left-sided heart failure and cutaneous abnormalities, expanding the
recessive DSP cardiocutaneous phenotype beyond the original 7901delG
families.
gene:
preferred_term: DSP
term:
id: hgnc:3052
label: DSP
clinical_significance: PATHOGENIC
type: compound heterozygous nonsense variants
evidence:
- reference: PMID:25516398
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
Genetic testing revealed a novel combination of two heterozygous
mutations in the DSP gene encoding desmoplakin: R1400X and R2284X.
explanation: >-
Supports compound heterozygous DSP truncations as an alternative
mutation path into the same desmoplakin-deficiency mechanism.
evidence:
- reference: PMID:11063735
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
All tested affected members of three families from Ecuador were
homozygous for this mutation which produces a premature stop codon
leading to a truncated desmoplakin protein missing the C domain
of the tail region.
explanation: >-
Defines the homozygous truncation as the cause of Carvajal syndrome.
- reference: PMID:25516398
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
Genetic testing revealed a novel combination of two heterozygous
mutations in the DSP gene encoding desmoplakin: R1400X and R2284X.
explanation: >-
Compound heterozygosity as alternative mechanism for Carvajal-like
phenotype.
- reference: CGGV:assertion_b23da580-269c-4e5d-8f13-91dbe7ea6a57-2025-05-30T160000.000Z
reference_title: "DSP / arrhythmogenic cardiomyopathy with wooly hair and keratoderma (Definitive)"
supports: SUPPORT
evidence_source: OTHER
snippet: "DSP | HGNC:3052 | arrhythmogenic cardiomyopathy with wooly hair and keratoderma | MONDO:0011581 | AD | Definitive"
explanation: ClinGen classifies the DSP-arrhythmogenic cardiomyopathy with wooly hair and keratoderma gene-disease relationship as definitive with autosomal dominant inheritance.
treatments:
- name: Heart Failure Management
description: >-
Standard pharmacotherapy for dilated cardiomyopathy and heart failure.
Cardiac transplantation may be required for end-stage disease.
treatment_term:
preferred_term: Heart failure management
term:
id: NCIT:C15986
label: Pharmacotherapy
target_mechanisms:
- target: Contractile and Electrical Dysfunction
treatment_effect: MODULATES
description: >-
Heart-failure pharmacotherapy manages downstream contractile dysfunction
but does not correct the upstream DSP desmosomal defect.
target_phenotypes:
- preferred_term: Congestive heart failure
term:
id: HP:0001635
label: Congestive heart failure
- name: Genetic Counseling
description: >-
Genetic counseling for autosomal recessive inheritance, carrier
testing, and prenatal testing options.
treatment_term:
preferred_term: Genetic counseling
term:
id: MAXO:0000079
label: genetic counseling
experimental_models:
- name: DSP-deficient human engineered heart tissue model
description: >-
Human iPSC-derived engineered heart tissues generated from DSP truncating
variant carriers and gene-edited DSP knockout cells model cardiomyocyte
contractile dysfunction, innate immune activation, and inflammatory
hypersensitivity relevant to DSP cardiomyopathy.
experimental_model_type: IPSC_DERIVED_MODEL
organism:
preferred_term: human
term:
id: NCBITaxon:9606
label: Homo sapiens
tissue_term:
preferred_term: heart
term:
id: UBERON:0000948
label: heart
cell_types:
- preferred_term: Cardiac muscle cell
term:
id: CL:0000746
label: cardiac muscle cell
conditions:
- DSP truncating variant
- DSP knockout
- Toll-like receptor stimulation
- mechanical strain
cell_source: Human induced pluripotent stem cell-derived cardiomyocytes from DSP variant carriers and gene-edited isogenic lines
culture_system: Three-dimensional engineered heart tissue
publication: PMID:38768074
modeled_mechanisms:
- target: Innate Immune Susceptibility in DSP-Deficient Cardiomyocytes
description: >-
The model assays baseline innate immune activation and exaggerated TLR
responses caused by DSP reduction.
evidence:
- reference: PMID:38768074
supports: SUPPORT
evidence_source: IN_VITRO
snippet: >-
To model DSP-associated myocarditis and assess the role of innate
immunity, we generated engineered heart tissues (EHTs) using human
induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) from
patients with heterozygous DSP truncating variants (DSPtvs) and a
gene-edited homozygous deletion cell line (DSP-/-).
explanation: >-
Establishes the engineered heart tissue model and its DSP genetic
contexts.
- target: Contractile and Electrical Dysfunction
description: >-
The same EHT system recapitulates electrical and contractile phenotypes
relevant to the downstream cardiac dysfunction branch.
evidence:
- reference: PMID:38768074
supports: SUPPORT
evidence_source: IN_VITRO
snippet: >-
Thus, EHTs replicate electrical and contractile phenotypes seen in
human myocarditis, implicating cytokine release as a key part of the
myogenic susceptibility to inflammation.
explanation: >-
Links the model to downstream cardiac dysfunction represented in the
Carvajal pathograph.
findings:
- statement: DSP-deficient engineered heart tissues show baseline innate immune activation and cytokine release
evidence:
- reference: PMID:38768074
supports: SUPPORT
evidence_source: IN_VITRO
snippet: >-
At baseline, DSP-/- EHTs displayed a transcriptomic signature of innate
immune activation, which was mirrored by cytokine release.
explanation: >-
Supports innate immune activation as a model-derived mechanism
downstream of DSP deficiency.
evidence:
- reference: PMID:38768074
supports: SUPPORT
evidence_source: IN_VITRO
snippet: >-
To model DSP-associated myocarditis and assess the role of innate
immunity, we generated engineered heart tissues (EHTs) using human
induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) from
patients with heterozygous DSP truncating variants (DSPtvs) and a
gene-edited homozygous deletion cell line (DSP-/-).
explanation: >-
Supports inclusion of the DSP EHT system as an experimental model for the
provisional innate-immune cardiac mechanism.
Carvajal syndrome is a rare inherited cardiocutaneous disorder classically defined by the triad of woolly/curly hair, palmoplantar keratoderma (often striate/focal), and predominantly left-ventricular (LV) cardiomyopathy that often presents in childhood and may progress to heart failure, malignant ventricular arrhythmias, sudden death, or need for heart transplantation. It is most commonly caused by pathogenic variants in the desmosomal gene DSP (desmoplakin), reflecting shared reliance of epidermis and myocardium on desmosome-mediated mechanical coupling. (sun2021hairandskin pages 4-5, karvonen2022anoveldesmoplakin pages 8-8)
Most available information in the retrieved set is derived from case reports/series, small cohorts, and systematic or narrative reviews rather than large EHR-based datasets, which is typical for ultra-rare syndromes. (sun2021hairandskin pages 1-2, binfadel2025genotypeandcardiac pages 1-2, polivka2016combinationofpalmoplantar pages 2-3)
Primary cause: germline DSP (desmoplakin) variants causing defective desmosome structure/function, resulting in combined skin/hair and myocardial disease (a “desmosomal disease”). (sun2021hairandskin pages 1-2, karvonen2022anoveldesmoplakin pages 8-8)
Abstract-supported primary claim (quote): A review of DSP cardiomyopathy notes: “The first association between DSP genetic variants and the presence of a myocardial disease referred to patients with Carvajal syndrome.” (Apr 2023; URL: https://doi.org/10.3390/jcm12072660) (brandao2023desmoplakincardiomyopathycomprehensive pages 1-2)
No specific genetic or environmental protective factors were identified in the retrieved evidence excerpts.
No direct GxE studies were identified in the retrieved evidence excerpts. However, the desmosomal mechanism implies that mechanical stress could plausibly modulate myocardial injury risk; this remains to be substantiated by disease-specific studies (not established in the provided sources).
Classic triad (high-level): - Woolly/curly hair (often congenital) - Palmoplantar keratoderma (PPK) (often striate or focal; tends to appear in early childhood) - Cardiomyopathy (commonly LV-dominant dilated/arrhythmogenic phenotype; childhood onset) (sun2021hairandskin pages 4-5, karvonen2022anoveldesmoplakin pages 8-8, polivka2016combinationofpalmoplantar pages 2-3)
Representative image evidence: A 2024 Carvajal case report shows cutaneous findings (woolly hair and palmoplantar keratoderma) and a 4-chamber cardiac MRI with dilated ventricles and reduced systolic function (Sep 2024; URL: https://doi.org/10.33963/v.phj.101664). (ziołkowska2024carvajalsyndromerelated media 9732cda8)
Additional/variable features reported in reviews/series: poor dentition/enamel defects, nail dystrophy, ichthyosis/erythrokeratodermia-spectrum skin changes in related DSP cardiocutaneous phenotypes. (sun2021hairandskin pages 4-5)
Direct validated QoL instrument results (e.g., SF-36, EQ-5D) were not identified in the retrieved excerpts. Clinically, progressive heart failure, ICD shocks, transplantation, and visible cutaneous manifestations imply major QoL burden. (binfadel2025genotypeandcardiac pages 1-2, ziołkowska2024carvajalsyndromerelated pages 1-2)
Loss-of-function (LoF) is a common mechanism: - Homozygous DSP frameshift truncation: 5208_5209delAG → frameshift downstream of amino acid 1736 with premature truncation of the predominant cardiac isoform DSP-1; associated with severe early-onset biventricular cardiomyopathy, woolly hair, and acantholytic PPK. (Jul 2011; URL: https://doi.org/10.1007/s00392-011-0345-9) (williams2011noveldesmoplakinmutation pages 2-5, williams2011noveldesmoplakinmutation pages 1-2) - Compound heterozygous DSP variants (2024 case): de novo truncation c.1339C>T and a paternally inherited missense c.8204G>C (p.Gly2735Ala) associated with severe biventricular cardiomyopathy and arrhythmia requiring transplant; the missense was reported as extremely rare in gnomAD in the case report narrative. (Sep 2024; URL: https://doi.org/10.33963/v.phj.101664) (ziołkowska2024carvajalsyndromerelated pages 1-2)
Genotype–phenotype correlation clues (review-level): DSP variant location appears to correlate with cardiocutaneous phenotype patterns; truncations removing the C-terminus are emphasized in classic Carvajal syndrome, while other domain-localized variants can yield overlapping dominant or recessive DSP cardiomyopathy phenotypes. (sun2021hairandskin pages 4-5)
The retrieved case literature and reviews interpret truncating/LoF DSP variants as pathogenic and frequently invoke nonsense-mediated decay (NMD) / haploinsufficiency as a mechanism in some dominant DSP cardiocutaneous syndromes. (maruthappu2019loss‐of‐functiondesmoplakini pages 7-11, ziołkowska2024carvajalsyndromerelated pages 1-2)
No validated modifier genes specific to Carvajal syndrome were identified in the retrieved excerpts.
Research direction note: A completed exploratory study tested feasibility of cardiomyocyte-derived DNA for genetic/epigenetic analyses of ACM genes including DSP (NCT03177018). (NCT03177018 chunk 1)
No specific environmental, lifestyle, or infectious triggers were identified as causal in the retrieved evidence excerpts. The disease is primarily genetic, though clinical management often includes avoidance of arrhythmia triggers in broader ACM practice (not directly evidenced here).
Upstream trigger: Germline DSP pathogenic variants → desmosome dysfunction.
Cellular/tissue consequence: Impaired anchoring of intermediate filaments (keratin/desmin) and altered desmosomal protein localization → compromised mechanical integrity and electrical coupling, contributing to conduction defects, myocardial injury and remodeling (fibrosis/fibrofatty replacement), and progressive cardiomyopathy. (maruthappu2019loss‐of‐functiondesmoplakini pages 7-11, brandao2023desmoplakincardiomyopathycomprehensive pages 1-2)
Clinical manifestation: LV-dominant or biventricular cardiomyopathy with ventricular arrhythmias and heart failure plus cutaneous phenotypes (woolly hair, PPK). (sun2021hairandskin pages 4-5, williams2011noveldesmoplakinmutation pages 2-5)
GO biological process (examples): - Desmosome organization (GO:0031581) - Cell-cell adhesion (GO:0098609) - Intermediate filament organization (GO:0045109) - Cardiac muscle tissue remodeling (GO:0055001) - Regulation of cardiac conduction (e.g., GO terms around cardiac muscle cell action potential/conduction)
Cell Ontology (CL) — key cell types implicated: - Keratinocyte (CL:0000312) - Cardiomyocyte / cardiac muscle cell (CL:0000746)
GO cellular component (examples): - Desmosome (GO:0030057) - Intercalated disc (GO:0014704)
Robust prevalence/incidence estimates were not identified in the retrieved excerpts. The 2025 cohort and prior literature note geographic clustering and reports from regions including Greece/Turkey/Israel/Saudi Arabia/India/Ecuador, but these are not population-based estimates. (binfadel2025genotypeandcardiac pages 1-2)
The combination of woolly hair and PPK (especially when distinct from family members) is emphasized as a clinical cue that should prompt cardiac evaluation and genetic testing. (sun2021hairandskin pages 1-2, karvonen2022anoveldesmoplakin pages 8-8, maruthappu2019loss‐of‐functiondesmoplakini pages 7-11)
Molecular confirmation via DSP sequencing (single-gene, panel, or exome) is used in reported cases and recommended when dermatologic warning signs are present. (karvonen2022anoveldesmoplakin pages 8-8, williams2011noveldesmoplakinmutation pages 2-5)
Severity of cutaneous signs (e.g., presence of PPK in some dominant DSP families) was associated with more severe cardiac symptoms in one cohort, suggesting potential phenotype-based risk stratification. (maruthappu2019loss‐of‐functiondesmoplakini pages 7-11)
Carvajal syndrome management is primarily supportive and follows cardiomyopathy and arrhythmia standards of care: - Guideline-directed heart failure pharmacotherapy (e.g., ACE inhibitor/diuretics/beta-blockers; specific drugs reported in pediatric series include captopril, furosemide, carvedilol, digoxin) (molho‐pessach2015twonovelhomozygous pages 3-5) - Antiarrhythmic therapy and rhythm monitoring (ziołkowska2024carvajalsyndromerelated pages 1-2) - ICD implantation for uncontrolled/high-risk ventricular arrhythmias (binfadel2025genotypeandcardiac pages 1-2, ziołkowska2024carvajalsyndromerelated pages 1-2) - Catheter ablation in selected arrhythmia cases (ziołkowska2024carvajalsyndromerelated pages 1-2) - Heart transplantation for end-stage disease (binfadel2025genotypeandcardiac pages 1-2, ziołkowska2024carvajalsyndromerelated pages 1-2, williams2011noveldesmoplakinmutation pages 2-5)
While there are no Carvajal-specific interventional trials in the retrieved trial set, multiple 2022–2024 observational studies explicitly include DSP variant carriers and are therefore relevant for desmoplakin cardiomyopathy / Carvajal-related phenotypes:
1) Bio-SCOTCH registry (ClinicalTrials.gov NCT06446271; start 2024-06-26; recruiting; n=750; includes DSP arm up to ~50): biomarker discovery and natural history across genetic cardiomyopathies including DSP. URL: https://clinicaltrials.gov/study/NCT06446271 (NCT06446271 chunk 1)
2) CharACTPET-MR hybrid PET-MRI characterization in genetically diagnosed arrhythmogenic cardiomyopathy (ClinicalTrials.gov NCT05450783; start 2022-09-01; recruiting; n=80): evaluates PET-MR patterns, prognostic associations (death, transplant, resuscitated sudden death, unstable VT, HF hospitalization, myocarditis), and immune correlates; inclusion lists DSP among genotypes. URL: https://clinicaltrials.gov/study/NCT05450783 (NCT05450783 chunk 1)
3) Cardiomyocyte DNA aspiration feasibility study (ClinicalTrials.gov NCT03177018; start 2016-09-13; completed; n=34): feasibility of obtaining cardiomyocytes during voltage mapping for DNA extraction; includes DSP in molecular/epigenetic targets. URL: https://clinicaltrials.gov/study/NCT03177018 (NCT03177018 chunk 1)
No primary prevention exists for the genetic cause. Evidence-supported preventive strategies are secondary/tertiary prevention through early detection and complication avoidance: - Cascade screening / genetic counseling for relatives, especially in settings with consanguinity. (binfadel2025genotypeandcardiac pages 1-2, williams2011noveldesmoplakinmutation pages 2-5) - Long-term cardiac monitoring in individuals with PPK + hair shaft anomalies due to high cardiac risk in systematic review data. (polivka2016combinationofpalmoplantar pages 2-3)
No naturally occurring non-human Carvajal syndrome analogs were identified in the retrieved evidence excerpts.
No specific Carvajal-focused animal models were identified in the retrieved evidence excerpts. Mechanistic inference is nevertheless consistent with established desmosome biology in cardiomyocytes and keratinocytes (review-level). (brandao2023desmoplakincardiomyopathycomprehensive pages 1-2)
1) Conceptual consolidation of “desmoplakin cardiomyopathy” (2023): A comprehensive review describes DSP cardiomyopathy as increasingly recognized, characterized by frequent LV involvement, extensive fibrosis, high arrhythmic risk, and episodes of acute myocardial injury, while explicitly linking the historical first DSP-myocardial disease association to Carvajal syndrome. Publication date Apr 2023; URL: https://doi.org/10.3390/jcm12072660 (brandao2023desmoplakincardiomyopathycomprehensive pages 1-2)
2) Expanded genotype evidence with detailed contemporary management (2024 case): A 19-year-old with classic cutaneous findings and severe biventricular dysfunction had compound DSP variants and required ICD, antiarrhythmics, ablation, and ultimately transplantation, illustrating current real-world management pathways and genotype–phenotype expansion. Publication date Sep 2024; URL: https://doi.org/10.33963/v.phj.101664 (ziołkowska2024carvajalsyndromerelated pages 1-2, ziołkowska2024carvajalsyndromerelated media 9732cda8)
3) New DSP-focused observational infrastructure (2024): Bio-SCOTCH (NCT06446271) is a large prospective biomarker registry explicitly enrolling DSP variant carriers, representing a practical path to improved risk prediction and earlier intervention in DSP-related cardiomyopathies. Start date 2024-06-26; URL: https://clinicaltrials.gov/study/NCT06446271 (NCT06446271 chunk 1)
The following table condenses key disease facts for knowledge-base ingestion:
| Domain | Key facts |
|---|---|
| Identifiers / synonyms | Carvajal syndrome; OMIM 605656 / 605676 reported in the literature excerpts; often described as “Naxos disease variant” or a related cardiocutaneous syndrome; related comparator: Naxos disease OMIM 601214 (sun2021hairandskin pages 1-2, binfadel2025genotypeandcardiac pages 1-2, brandao2023desmoplakincardiomyopathycomprehensive pages 1-2, binfadel2025genotypeandcardiac pages 9-9) |
| Primary evidence source type | Evidence is mainly from aggregated disease reviews, case reports/series, and small retrospective cohorts rather than EHR-scale datasets; knowledge remains based on rare-patient observations (sun2021hairandskin pages 1-2, binfadel2025genotypeandcardiac pages 1-2, brandao2023desmoplakincardiomyopathycomprehensive pages 1-2) |
| Causal gene | DSP (desmoplakin) is the principal causal gene for classic Carvajal syndrome; disease belongs to the desmosomal cardiocutaneous disorders (sun2021hairandskin pages 1-2, pigors2015desmoplakinmutationswith pages 1-2, brandao2023desmoplakincardiomyopathycomprehensive pages 1-2) |
| Variant types / molecular pattern | Predominantly loss-of-function/truncating DSP variants, especially C-terminal changes in classic recessive disease; reported mechanisms include frameshift, nonsense, compound heterozygous, and homozygous truncating variants; some cases involve nonsense-mediated decay / haploinsufficiency (ziołkowska2024carvajalsyndromerelated pages 1-2, maruthappu2019loss‐of‐functiondesmoplakini pages 7-11, williams2011noveldesmoplakinmutation pages 2-5, williams2011noveldesmoplakinmutation pages 1-2) |
| Inheritance | Usually autosomal recessive in classic Carvajal syndrome, often in consanguineous families; dominant DSP cardiocutaneous phenotypes with overlapping “Carvajal-like” features are also reported (sun2021hairandskin pages 4-5, karvonen2022anoveldesmoplakin pages 8-8, maruthappu2019loss‐of‐functiondesmoplakini pages 7-11, williams2011noveldesmoplakinmutation pages 1-2) |
| Hallmark phenotype triad | Woolly/curly hair + palmoplantar keratoderma (often striate/focal) + cardiomyopathy; additional features may include poor dentition, nail changes, skin fragility, or ichthyosis depending on DSP variant location (sun2021hairandskin pages 1-2, sun2021hairandskin pages 4-5, molho‐pessach2015twonovelhomozygous pages 3-5) |
| Typical cardiac phenotype | Classically left-ventricular–predominant dilated/arrhythmogenic cardiomyopathy; many patients show biventricular disease, myocardial fibrosis, heart failure, ventricular arrhythmias, and sometimes LV non-compaction features (sun2021hairandskin pages 4-5, molho‐pessach2015twonovelhomozygous pages 3-5, ziołkowska2024carvajalsyndromerelated pages 1-2, williams2011noveldesmoplakinmutation pages 2-5, williams2011noveldesmoplakinmutation pages 1-2) |
| Usual onset / course | Hair changes are often congenital; keratoderma develops in infancy/toddler years; cardiac manifestations commonly begin in childhood and are often progressive, with reported median first cardiac manifestation around 8 years (range 3–35) (polivka2016combinationofpalmoplantar pages 2-3, williams2011noveldesmoplakinmutation pages 1-2) |
| Key statistics | In a systematic review of desmosomal disease, the combination of PPK + hair shaft anomalies carried 80.1% risk of cardiac disease (129/161 patients) (source review summary). In a 10-patient Saudi pediatric Carvajal cohort: 100% woolly hair, 50% PPK, 9/10 frequent PVCs, 3/10 ICD, 4/10 heart transplant, 3/10 died while awaiting transplant (binfadel2025genotypeandcardiac pages 1-2, polivka2016combinationofpalmoplantar pages 2-3) |
| Pathophysiology | DSP dysfunction impairs desmosome–intermediate filament anchoring, weakening mechanical coupling in myocardium and epidermis; downstream effects include desmosomal protein mislocalization, conduction abnormalities, fibrosis/fibrofatty replacement, and cardiomyopathy (sun2021hairandskin pages 1-2, maruthappu2019loss‐of‐functiondesmoplakini pages 7-11, brandao2023desmoplakincardiomyopathycomprehensive pages 1-2) |
| Diagnostic clues | Early woolly hair and PPK should trigger cardiac workup; diagnosis integrates clinical triad, family history/consanguinity, and molecular confirmation of DSP variants (karvonen2022anoveldesmoplakin pages 8-8, williams2011noveldesmoplakinmutation pages 2-5, williams2011noveldesmoplakinmutation pages 1-2) |
| Cardiac diagnostics | Typical evaluations include ECG, Holter, echocardiography, cardiac MRI (for fibrosis, ventricular function, LV/RV involvement), and sometimes biopsy/histology; asymptomatic DSP carriers may still warrant surveillance (binfadel2025genotypeandcardiac pages 1-2, karvonen2022anoveldesmoplakin pages 8-8, ziołkowska2024carvajalsyndromerelated pages 1-2) |
| Surveillance / prevention | Long-term cardiac monitoring is recommended for patients with PPK + hair anomalies and for at-risk relatives; genetic counseling, cascade/family screening, and early specialist follow-up are emphasized (binfadel2025genotypeandcardiac pages 1-2, pigors2015desmoplakinmutationswith pages 1-2, maruthappu2019loss‐of‐functiondesmoplakini pages 7-11, williams2011noveldesmoplakinmutation pages 2-5) |
| Management options | Standard heart-failure therapy, antiarrhythmics, ICD, catheter ablation, and heart transplantation for advanced disease; management is multidisciplinary (cardiology, dermatology, genetics) (sun2021hairandskin pages 4-5, molho‐pessach2015twonovelhomozygous pages 3-5, ziołkowska2024carvajalsyndromerelated pages 1-2) |
| Prognosis | Potentially severe, with early heart failure, malignant ventricular arrhythmias, sudden cardiac death, and transplant need in childhood/adolescence; prognosis is variable but can be poor without early recognition and intervention (binfadel2025genotypeandcardiac pages 1-2, sun2021hairandskin pages 4-5, williams2011noveldesmoplakinmutation pages 1-2) |
Table: This table condenses the core identifiers, genotype, phenotype, diagnostics, prognosis, and management points for Carvajal syndrome from the gathered evidence. It is useful as a quick-reference summary for a disease knowledge base entry.
References
(sun2021hairandskin pages 1-2): Qisi Sun, Lara Wine Lee, E Kevin Hall, Keith A. Choate, and Robert W. Elder. Hair and skin predict cardiomyopathies: carvajal and erythrokeratodermia cardiomyopathy syndromes. Pediatric Dermatology, 38:31-38, Dec 2021. URL: https://doi.org/10.1111/pde.14478, doi:10.1111/pde.14478. This article has 27 citations and is from a peer-reviewed journal.
(sun2021hairandskin pages 4-5): Qisi Sun, Lara Wine Lee, E Kevin Hall, Keith A. Choate, and Robert W. Elder. Hair and skin predict cardiomyopathies: carvajal and erythrokeratodermia cardiomyopathy syndromes. Pediatric Dermatology, 38:31-38, Dec 2021. URL: https://doi.org/10.1111/pde.14478, doi:10.1111/pde.14478. This article has 27 citations and is from a peer-reviewed journal.
(karvonen2022anoveldesmoplakin pages 8-8): V. Karvonen, L. Harjama, K. Heliö, K. Kettunen, O. Elomaa, J.W. Koskenvuo, J. Kere, S. Weckström, M. Holmström, J. Saarela, A. Ranki, T. Heliö, and K. Hannula‐Jouppi. A novel desmoplakin mutation causes dilated cardiomyopathy with palmoplantar keratoderma as an early clinical sign. Journal of the European Academy of Dermatology and Venereology, 36:1349-1358, May 2022. URL: https://doi.org/10.1111/jdv.18164, doi:10.1111/jdv.18164. This article has 11 citations and is from a domain leading peer-reviewed journal.
(binfadel2025genotypeandcardiac pages 1-2): Maha Binfadel, Mohamed Umair Aleem, Mohammed Alhabdan, Nadiah Alruwaili, Zuhair AlHassnan, Olga Vriz, Sahar Tulbah, and Dimpna Calila Albert-Brotons. Genotype and cardiac outcome in patients with cardiocutaneous syndrome (naxos disease variant: carvajal syndrome). Orphanet Journal of Rare Diseases, Mar 2025. URL: https://doi.org/10.1186/s13023-025-03612-8, doi:10.1186/s13023-025-03612-8. This article has 1 citations and is from a peer-reviewed journal.
(molho‐pessach2015twonovelhomozygous pages 5-6): Vered Molho‐Pessach, Sivan Sheffer, Rula Siam, Spiro Tams, Ihab Siam, Rula Awwad, Sofia Babay, Julius Golender, Natalia Simanovsky, Yuval Ramot, and Abraham Zlotogorski. Two novel homozygous desmoplakin mutations in carvajal syndrome. Pediatric Dermatology, 32:641-646, Sep 2015. URL: https://doi.org/10.1111/pde.12541, doi:10.1111/pde.12541. This article has 27 citations and is from a peer-reviewed journal.
(polivka2016combinationofpalmoplantar pages 2-3): Laura Polivka, Christine Bodemer, and Smail Hadj-Rabia. Combination of palmoplantar keratoderma and hair shaft anomalies, the warning signal of severe arrhythmogenic cardiomyopathy: a systematic review on genetic desmosomal diseases. Journal of Medical Genetics, 53:289-295, Sep 2016. URL: https://doi.org/10.1136/jmedgenet-2015-103403, doi:10.1136/jmedgenet-2015-103403. This article has 45 citations and is from a domain leading peer-reviewed journal.
(brandao2023desmoplakincardiomyopathycomprehensive pages 1-2): Mariana Brandão, Riccardo Bariani, Ilaria Rigato, and Barbara Bauce. Desmoplakin cardiomyopathy: comprehensive review of an increasingly recognized entity. Journal of Clinical Medicine, 12:2660, Apr 2023. URL: https://doi.org/10.3390/jcm12072660, doi:10.3390/jcm12072660. This article has 54 citations.
(molho‐pessach2015twonovelhomozygous pages 3-5): Vered Molho‐Pessach, Sivan Sheffer, Rula Siam, Spiro Tams, Ihab Siam, Rula Awwad, Sofia Babay, Julius Golender, Natalia Simanovsky, Yuval Ramot, and Abraham Zlotogorski. Two novel homozygous desmoplakin mutations in carvajal syndrome. Pediatric Dermatology, 32:641-646, Sep 2015. URL: https://doi.org/10.1111/pde.12541, doi:10.1111/pde.12541. This article has 27 citations and is from a peer-reviewed journal.
(ziołkowska2024carvajalsyndromerelated pages 1-2): Lidia Ziółkowska, Dorota Piekutowska-Abramczuk, Karolina Borowiec, Elżbieta Ciara, Maciej Sterliński, and Elżbieta Katarzyna Biernacka. Carvajal syndrome related to two distinct molecular variants in desmoplakin gene. Polish Heart Journal, 82:914-915, Sep 2024. URL: https://doi.org/10.33963/v.phj.101664, doi:10.33963/v.phj.101664. This article has 1 citations.
(williams2011noveldesmoplakinmutation pages 2-5): Tatjana Williams, Wolfram Machann, Leif Kühler, Henning Hamm, Josef Müller-Höcker, Michael Zimmer, Georg Ertl, Oliver Ritter, Meinrad Beer, and Jost Schönberger. Novel desmoplakin mutation: juvenile biventricular cardiomyopathy with left ventricular non-compaction and acantholytic palmoplantar keratoderma. Clinical Research in Cardiology, 100:1087-1093, Jul 2011. URL: https://doi.org/10.1007/s00392-011-0345-9, doi:10.1007/s00392-011-0345-9. This article has 57 citations and is from a peer-reviewed journal.
(williams2011noveldesmoplakinmutation pages 1-2): Tatjana Williams, Wolfram Machann, Leif Kühler, Henning Hamm, Josef Müller-Höcker, Michael Zimmer, Georg Ertl, Oliver Ritter, Meinrad Beer, and Jost Schönberger. Novel desmoplakin mutation: juvenile biventricular cardiomyopathy with left ventricular non-compaction and acantholytic palmoplantar keratoderma. Clinical Research in Cardiology, 100:1087-1093, Jul 2011. URL: https://doi.org/10.1007/s00392-011-0345-9, doi:10.1007/s00392-011-0345-9. This article has 57 citations and is from a peer-reviewed journal.
(ziołkowska2024carvajalsyndromerelated media 9732cda8): Lidia Ziółkowska, Dorota Piekutowska-Abramczuk, Karolina Borowiec, Elżbieta Ciara, Maciej Sterliński, and Elżbieta Katarzyna Biernacka. Carvajal syndrome related to two distinct molecular variants in desmoplakin gene. Polish Heart Journal, 82:914-915, Sep 2024. URL: https://doi.org/10.33963/v.phj.101664, doi:10.33963/v.phj.101664. This article has 1 citations.
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