Geleophysic dysplasia is a rare acromelic skeletal dysplasia with severe short stature, short hands and feet, progressive joint limitation and contractures, thickened skin, distinctive facial features, and potentially lethal cardiac, airway, and pulmonary involvement. The disease is genetically heterogeneous: biallelic ADAMTSL2 variants cause the autosomal recessive subtype, while heterozygous FBN1 or LTBP3 variants cause autosomal dominant subtypes. These genes encode extracellular-matrix and microfibril-associated proteins, linking the clinical phenotype to abnormal fibrillin microfibrils, TGF-beta signaling dysregulation, and tissue-specific extracellular matrix defects.
Ask a research question about Geleophysic Dysplasia. OpenScientist will conduct autonomous deep research using the Disorder Mechanisms Knowledge Base and PubMed literature (typically 10-30 minutes).
Do not include personal health information in your question. Questions and results are cached in your browser's local storage.
name: Geleophysic Dysplasia
creation_date: "2026-05-10T04:22:24Z"
updated_date: "2026-05-10T04:22:24Z"
category: Mendelian
description: >-
Geleophysic dysplasia is a rare acromelic skeletal dysplasia with severe
short stature, short hands and feet, progressive joint limitation and
contractures, thickened skin, distinctive facial features, and potentially
lethal cardiac, airway, and pulmonary involvement. The disease is genetically
heterogeneous: biallelic ADAMTSL2 variants cause the autosomal recessive
subtype, while heterozygous FBN1 or LTBP3 variants cause autosomal dominant
subtypes. These genes encode extracellular-matrix and microfibril-associated
proteins, linking the clinical phenotype to abnormal fibrillin microfibrils,
TGF-beta signaling dysregulation, and tissue-specific extracellular matrix
defects.
disease_term:
preferred_term: geleophysic dysplasia
term:
id: MONDO:0000127
label: geleophysic dysplasia
parents:
- Skeletal dysplasia
- Acromelic dysplasia
synonyms:
- Geleophysic dwarfism
has_subtypes:
- name: GD1
display_name: Geleophysic dysplasia 1 (ADAMTSL2-related)
subtype_term:
preferred_term: geleophysic dysplasia 1
term:
id: MONDO:0009269
label: geleophysic dysplasia 1
description: >
Autosomal recessive ADAMTSL2-related geleophysic dysplasia. Functional
studies show impaired secretion of mutant ADAMTSL2, with severity tracking
the degree of ADAMTSL2 secretion impairment.
evidence:
- reference: PMID:31516831
reference_title: "Geleophysic dysplasia: novel missense variants and insights into ADAMTSL2 intracellular trafficking."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Geleophysic dysplasia (GPHYSD1, MIM231050; GPHYSD2, MIM614185; GPHYSD3, MIM617809) is an autosomal disorder characterized by short-limb dwarfism, brachydactyly, cardiac valvular disease, and laryngotracheal stenosis."
explanation: The paper explicitly identifies the GPHYSD1 subtype and the core clinical phenotype.
- reference: PMID:38300707
reference_title: "ADAMTSL2 mutations determine the phenotypic severity in geleophysic dysplasia."
supports: SUPPORT
evidence_source: MODEL_ORGANISM
snippet: "Geleophysic dysplasia-1 (GD1) is an autosomal recessive disorder caused by ADAMTS-like 2 (ADAMTSL2) variants."
explanation: This directly supports the GD1 ADAMTSL2-related subtype.
- name: GD2
display_name: Geleophysic dysplasia 2 (FBN1-related)
subtype_term:
preferred_term: geleophysic dysplasia 2
term:
id: MONDO:0013612
label: geleophysic dysplasia 2
description: >
Autosomal dominant FBN1-related geleophysic dysplasia. Domain-specific FBN1
variants produce a geleophysic phenotype rather than classic Marfan
syndrome, consistent with a microfibril/TGF-beta signaling mechanism.
evidence:
- reference: PMID:31516831
reference_title: "Geleophysic dysplasia: novel missense variants and insights into ADAMTSL2 intracellular trafficking."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Mutations in ADAMTSL2, FBN1, and LTBP3 genes are responsible for this condition."
explanation: The abstract identifies FBN1 among the causal genes for geleophysic dysplasia.
- reference: PMID:25762570
reference_title: "Adamtsl2 deletion results in bronchial fibrillin microfibril accumulation and bronchial epithelial dysplasia--a novel mouse model providing insights into geleophysic dysplasia."
supports: SUPPORT
evidence_source: MODEL_ORGANISM
snippet: "domain-specific FBN1 mutations result in dominant GD."
explanation: This supports FBN1-related dominant geleophysic dysplasia.
- name: GD3
display_name: Geleophysic dysplasia 3 (LTBP3-related)
subtype_term:
preferred_term: geleophysic dysplasia 3
term:
id: MONDO:0054722
label: geleophysic dysplasia 3
description: >
Autosomal dominant LTBP3-related geleophysic dysplasia, reported in de novo
heterozygous cases with early severe respiratory involvement and linked to
the microfibrillar network.
evidence:
- reference: PMID:27068007
reference_title: "Mutations in LTBP3 cause acromicric dysplasia and geleophysic dysplasia."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Two distinct de novo heterozygous LTPB3 mutations were also identified in two unrelated GD individuals who had died in early childhood from respiratory failure-a donor splice site mutation (exon 12 c.1846+5G>A) and a stop-loss mutation (exon 28: c.3912A>T: p.1304*Cysext*12)."
explanation: This identifies de novo heterozygous LTBP3 mutations in individuals with geleophysic dysplasia.
- reference: PMID:39705488
reference_title: "Expanded phenotypes and pathogenesis of geleophysic dysplasia 3 resulted from a de novo LTBP3 mutation: A case report."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "And the whole exome sequencing results indicated that the family carried a de novo mutation c.852_853insAGG (p.L284_P285insR) in the LTBP3 gene (NM_001130144.3) inherited from the mother."
explanation: This case report provides additional human evidence for LTBP3-related GD3.
inheritance:
- name: Autosomal dominant
inheritance_term:
preferred_term: Autosomal dominant inheritance
term:
id: HP:0000006
label: Autosomal dominant inheritance
description: >
FBN1- and LTBP3-related geleophysic dysplasia are autosomal dominant.
Reported probands with parental molecular testing have had de novo
pathogenic variants.
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "Autosomal dominant"
explanation: Orphanet lists autosomal dominant inheritance for a subset of geleophysic dysplasia.
- reference: PMID:20301776
reference_title: Geleophysic Dysplasia.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Geleophysic dysplasia caused by a heterozygous pathogenic variant in either FBN1 or LTBP3 is inherited in an autosomal dominant manner."
explanation: GeneReviews directly states the dominant inheritance pattern for FBN1 and LTBP3 subtypes.
- reference: PMID:20301776
reference_title: Geleophysic Dysplasia.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Autosomal dominant inheritance: All probands reported to date with FBN1- or LTBP3-related geleophysic dysplasia whose parents have undergone molecular genetic testing have had the disorder as the result of a de novo pathogenic variant."
explanation: GeneReviews supports the de novo statement for tested FBN1- and LTBP3-related probands.
- name: Autosomal recessive
inheritance_term:
preferred_term: Autosomal recessive inheritance
term:
id: HP:0000007
label: Autosomal recessive inheritance
description: >
ADAMTSL2-related geleophysic dysplasia is autosomal recessive and results
from biallelic pathogenic variants.
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "Autosomal recessive"
explanation: Orphanet lists autosomal recessive inheritance for a subset of geleophysic dysplasia.
- reference: PMID:20301776
reference_title: Geleophysic Dysplasia.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Geleophysic dysplasia caused by biallelic pathogenic variants in ADAMTSL2 is inherited in an autosomal recessive manner."
explanation: GeneReviews directly states the recessive inheritance pattern for ADAMTSL2-related disease.
pathophysiology:
- name: ADAMTSL2 secretion and trafficking defect
description: >
ADAMTSL2 missense variants can disrupt Golgi trafficking and secretion of
the extracellular ADAMTSL2 glycoprotein. In patient fibroblasts and
transfected cells, mutant ADAMTSL2 mislocalizes, is poorly secreted, and is
associated with increased SMAD2 phosphorylation, placing ADAMTSL2 secretion
upstream of extracellular matrix and TGF-beta signaling abnormalities.
cell_types:
- preferred_term: fibroblast
term:
id: CL:0000057
label: fibroblast
biological_processes:
- preferred_term: intracellular protein transport
term:
id: GO:0006886
label: intracellular protein transport
modifier: ABNORMAL
evidence:
- reference: PMID:31516831
reference_title: "Geleophysic dysplasia: novel missense variants and insights into ADAMTSL2 intracellular trafficking."
supports: SUPPORT
evidence_source: IN_VITRO
snippet: "We also showed that ADAMTSL2 with the missense variant p.Gly296Arg fails to localize in the Golgi and its secretion is impaired in contrast to wild-type ADAMTSL2 that traffics trough the Golgi complex and is efficiently secreted."
explanation: Cell-based localization and secretion assays show mutant ADAMTSL2 trafficking and secretion defects.
- reference: PMID:38300707
reference_title: "ADAMTSL2 mutations determine the phenotypic severity in geleophysic dysplasia."
supports: SUPPORT
evidence_source: IN_VITRO
snippet: "The impairment of ADAMTSL2 secretion was observed in both variants, but p.A165T exhibited a more severe impact."
explanation: This mixed cellular/mouse-model study links ADAMTSL2 secretion impairment to variant severity.
downstream:
- target: Fibrillin microfibril matrix dysregulation
causal_link_type: DIRECT
description: ADAMTSL2 binds fibrillin microfibrils, so impaired ADAMTSL2 secretion disrupts extracellular microfibril organization.
- target: TGF-beta and SMAD signaling dysregulation
causal_link_type: DIRECT
description: Mutant ADAMTSL2 increases SMAD2 phosphorylation in cell assays.
- name: Fibrillin microfibril matrix dysregulation
description: >
ADAMTSL2, FBN1, and LTBP3 converge on the fibrillin-containing extracellular
microfibril network. Fibrillin microfibrils bind latent TGF-beta complexes,
and acromelic dysplasia proteins interact with this matrix scaffold; variants
in these genes therefore disturb matrix assembly and growth-factor
bioavailability in connective tissues.
cell_types:
- preferred_term: connective tissue cell
term:
id: CL:0002320
label: connective tissue cell
biological_processes:
- preferred_term: extracellular matrix organization
term:
id: GO:0030198
label: extracellular matrix organization
modifier: ABNORMAL
evidence:
- reference: PMID:32880985
reference_title: "Acromelic dysplasias: how rare musculoskeletal disorders reveal biological functions of extracellular matrix proteins."
supports: SUPPORT
evidence_source: OTHER
snippet: "most of the affected proteins directly interact with fibrillin microfibrils in the extracellular matrix and have been linked to the regulation of TGF-β signaling."
explanation: Review-level synthesis links acromelic dysplasia proteins to fibrillin microfibrils and TGF-beta regulation.
- reference: PMID:25762570
reference_title: "Adamtsl2 deletion results in bronchial fibrillin microfibril accumulation and bronchial epithelial dysplasia--a novel mouse model providing insights into geleophysic dysplasia."
supports: SUPPORT
evidence_source: MODEL_ORGANISM
snippet: "ADAMTSL2 has been previously shown to bind FBN1 and latent TGFβ-binding protein-1 (LTBP1)."
explanation: The Adamtsl2 model paper grounds ADAMTSL2 in microfibril-associated protein interactions.
downstream:
- target: TGF-beta and SMAD signaling dysregulation
causal_link_type: DIRECT
description: Fibrillin microfibrils regulate latent TGF-beta bioavailability, so microfibril disruption alters TGF-beta signaling.
- target: Short stature
causal_link_type: INDIRECT_KNOWN_INTERMEDIATES
intermediate_mechanisms:
- impaired extracellular matrix assembly in cartilage, skin, and periarticular connective tissue
- altered TGF-beta bioavailability
description: Matrix disorganization affects skeletal growth through extracellular-matrix and signaling intermediates.
- target: Thickened skin
causal_link_type: INDIRECT_KNOWN_INTERMEDIATES
intermediate_mechanisms:
- abnormal dermal extracellular matrix assembly
description: Matrix disorganization affects dermal connective tissue.
- name: TGF-beta and SMAD signaling dysregulation
description: >
Geleophysic dysplasia genes affect latent TGF-beta handling and downstream
SMAD signaling. Mutant ADAMTSL2 increases phosphorylated SMAD2 in cell
assays, FBN1-related patient fibroblasts show defects in TGF-beta-linked
matrix deposition, and LTBP3 variants are predicted or reported to alter
TGF-beta signaling.
biological_processes:
- preferred_term: transforming growth factor beta receptor signaling pathway
term:
id: GO:0007179
label: transforming growth factor beta receptor signaling pathway
modifier: DYSREGULATED
evidence:
- reference: PMID:31516831
reference_title: "Geleophysic dysplasia: novel missense variants and insights into ADAMTSL2 intracellular trafficking."
supports: SUPPORT
evidence_source: IN_VITRO
snippet: "Moreover, lysates of HEK293 cells transfected with mutated ADAMTSL2 showed increased phosphorylated SMAD2 (pSMAD2) compared to cells transfected with wild-type ADAMTSL2 (Fig. 4B)."
explanation: Phosphorylated SMAD2 is a direct readout of increased TGF-beta pathway signaling in this cell assay.
- reference: PMID:31350823
reference_title: "Skin fibroblasts of patients with geleophysic dysplasia due to FBN1 mutations have lysosomal inclusions and losartan improves their microfibril deposition defect."
supports: SUPPORT
evidence_source: IN_VITRO
snippet: "Geleophysic dysplasia (GPHYSD) is a disorder characterized by dysmorphic features, stiff joints and cardiac involvement due to defects of TGF-β signaling."
explanation: The FBN1 fibroblast study frames the disease mechanism as TGF-beta signaling defects.
- reference: PMID:39705488
reference_title: "Expanded phenotypes and pathogenesis of geleophysic dysplasia 3 resulted from a de novo LTBP3 mutation: A case report."
supports: SUPPORT
evidence_source: COMPUTATIONAL
snippet: "The results of bioinformatics prediction demonstrated the mutation influenced the stability of the LTBP3 gene, thereby enhanced the transforming growth factor β signaling pathways."
explanation: Bioinformatic prediction in a GD3 case report supports an LTBP3-specific effect on TGF-beta signaling.
downstream:
- target: Brachydactyly
causal_link_type: INDIRECT_KNOWN_INTERMEDIATES
intermediate_mechanisms:
- altered extracellular-matrix signaling in skeletal and periarticular tissues
description: TGF-beta dysregulation perturbs skeletal patterning and growth.
- target: Valvular pulmonary stenosis
causal_link_type: INDIRECT_KNOWN_INTERMEDIATES
intermediate_mechanisms:
- abnormal cardiac valve extracellular-matrix remodeling
description: TGF-beta-linked matrix abnormalities contribute to valvular disease.
- target: Elevated pulmonary artery pressure
causal_link_type: INDIRECT_KNOWN_INTERMEDIATES
intermediate_mechanisms:
- abnormal pulmonary vascular extracellular-matrix remodeling
description: TGF-beta-linked matrix abnormalities contribute to pulmonary vascular involvement.
- name: Bronchial microfibril accumulation and epithelial dysplasia
description: >
Adamtsl2 loss in mice causes abnormal bronchial microfibril accumulation,
bronchial epithelial dysplasia, glycogen-rich epithelial inclusions, and
increased bronchial epithelial TGF-beta signaling. This provides
organism-level evidence for the airway component of human geleophysic
dysplasia.
cell_types:
- preferred_term: epithelial cell of tracheobronchial tree
term:
id: CL:0002202
label: epithelial cell of tracheobronchial tree
biological_processes:
- preferred_term: extracellular matrix organization
term:
id: GO:0030198
label: extracellular matrix organization
modifier: ABNORMAL
- preferred_term: transforming growth factor beta receptor signaling pathway
term:
id: GO:0007179
label: transforming growth factor beta receptor signaling pathway
modifier: INCREASED
evidence:
- reference: PMID:25762570
reference_title: "Adamtsl2 deletion results in bronchial fibrillin microfibril accumulation and bronchial epithelial dysplasia--a novel mouse model providing insights into geleophysic dysplasia."
supports: SUPPORT
evidence_source: MODEL_ORGANISM
snippet: "Adamtsl2(-/-) mice, which died at birth, had severe bronchial epithelial dysplasia with abnormal glycogen-rich inclusions in bronchial epithelium resembling the cellular anomalies described previously in GD."
explanation: Adamtsl2 knockout mice reproduce bronchial epithelial pathology relevant to GD airway disease.
- reference: PMID:25762570
reference_title: "Adamtsl2 deletion results in bronchial fibrillin microfibril accumulation and bronchial epithelial dysplasia--a novel mouse model providing insights into geleophysic dysplasia."
supports: SUPPORT
evidence_source: MODEL_ORGANISM
snippet: "An increase in microfibrils in the bronchial wall was associated with increased FBN2 and microfibril-associated glycoprotein-1 (MAGP1) staining, whereas LTBP1 staining was increased in bronchial epithelium."
explanation: The model provides direct support for the bronchial microfibril accumulation claim.
- reference: PMID:25762570
reference_title: "Adamtsl2 deletion results in bronchial fibrillin microfibril accumulation and bronchial epithelial dysplasia--a novel mouse model providing insights into geleophysic dysplasia."
supports: SUPPORT
evidence_source: MODEL_ORGANISM
snippet: "The observed extracellular matrix (ECM) alterations were associated with increased bronchial epithelial TGFβ signaling at 17.5 days of gestation; however, treatment with TGFβ-neutralizing antibody did not correct the epithelial dysplasia."
explanation: The model links airway ECM abnormalities with increased TGF-beta signaling, while showing epithelial dysplasia is not fully rescued by TGF-beta neutralization.
downstream:
- target: Airway obstruction
causal_link_type: DIRECT
description: Bronchial epithelial dysplasia and airway matrix abnormalities provide a direct tissue mechanism for airway obstruction and respiratory compromise.
- name: Fibroblast ECM secretion and MMP-mediated migration dysregulation
description: >
Patient-derived dermal fibroblasts with ADAMTSL2 or FBN1 variants show
impaired secretion of ECM proteins, increased migration, and increased MMP-1
and MMP-14 expression. These findings expand the matrix pathomechanism from
static microfibril defects to abnormal fibroblast matrix remodeling.
cell_types:
- preferred_term: fibroblast
term:
id: CL:0000057
label: fibroblast
biological_processes:
- preferred_term: cell migration
term:
id: GO:0016477
label: cell migration
modifier: INCREASED
- preferred_term: extracellular matrix organization
term:
id: GO:0030198
label: extracellular matrix organization
modifier: ABNORMAL
evidence:
- reference: PMID:40481143
reference_title: "Dysregulation of cell migration by matrix metalloproteinases in geleophysic dysplasia."
supports: SUPPORT
evidence_source: IN_VITRO
snippet: "We found that the secretion of ECM proteins including ADAMTSL2, FBN1, and Fibronectin were impaired in GD fibroblasts."
explanation: Patient-derived fibroblast experiments show impaired ECM protein secretion.
- reference: PMID:40481143
reference_title: "Dysregulation of cell migration by matrix metalloproteinases in geleophysic dysplasia."
supports: SUPPORT
evidence_source: IN_VITRO
snippet: "Increased cell migration was observed in GD fibroblasts carrying ADAMTSL2 or FBN1 variants, which was associated with up-regulation of MMP-1 and MMP-14, two proteases related to cell mobility."
explanation: This directly supports increased fibroblast migration and MMP dysregulation in GD cells.
downstream:
- target: Thickened skin
causal_link_type: INDIRECT_KNOWN_INTERMEDIATES
intermediate_mechanisms:
- abnormal dermal and periarticular extracellular-matrix remodeling
description: Fibroblast matrix-remodeling defects plausibly contribute to dermal thickening.
- target: Limitation of joint mobility
causal_link_type: INDIRECT_KNOWN_INTERMEDIATES
intermediate_mechanisms:
- abnormal periarticular extracellular-matrix remodeling
description: Fibroblast matrix-remodeling defects plausibly contribute to joint mobility limitation.
histopathology:
- name: Lysosomal-like intracellular inclusions in fibroblasts and airway epithelium
description: >
Geleophysic dysplasia cells can contain lysosomal-like vesicles with
lamellar or electron-dense storage material. These inclusions are seen in
patient fibroblasts with ADAMTSL2 or FBN1 variants and in Adamtsl2-null
bronchial epithelium, supporting the historical lysosomal-storage-like
appearance of the disease without making it a primary lysosomal enzyme
deficiency.
evidence:
- reference: PMID:31516831
reference_title: "Geleophysic dysplasia: novel missense variants and insights into ADAMTSL2 intracellular trafficking."
supports: SUPPORT
evidence_source: IN_VITRO
snippet: "Primary fibroblasts from skin biopsy available only for subject 3 were analyzed by EM and showed lysosomal-like vesicles with lamellar structure appearance and electron-dense storage material (Fig. 2) suggesting that inclusions are a feature of GPHYSD cells either carrying ADAMTSL2 or FBN1 mutations [26]."
explanation: Electron microscopy in patient-derived fibroblasts shows lysosomal-like inclusions.
- reference: PMID:31350823
reference_title: "Skin fibroblasts of patients with geleophysic dysplasia due to FBN1 mutations have lysosomal inclusions and losartan improves their microfibril deposition defect."
supports: SUPPORT
evidence_source: IN_VITRO
snippet: "Moreover, we found that the storage material is enclosed within lysosomes and is associated with the upregulation of several lysosomal genes."
explanation: FBN1-related patient fibroblasts show storage material enclosed within lysosomes.
genetic:
- name: ADAMTSL2 disease-causing variants
gene_term:
preferred_term: ADAMTSL2
term:
id: hgnc:14631
label: ADAMTSL2
association: Causative
relationship_type: CAUSATIVE
subtype: GD1
inheritance:
- name: Autosomal recessive
features: >
Biallelic ADAMTSL2 variants cause GD1 and impair secretion of the ADAMTSL2
extracellular matrix glycoprotein.
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "ADAMTSL2 | ADAMTS like 2 | hgnc:14631 | Disease-causing germline mutation(s) in"
explanation: Orphanet lists ADAMTSL2 as a disease-causing gene for geleophysic dysplasia.
- reference: PMID:31516831
reference_title: "Geleophysic dysplasia: novel missense variants and insights into ADAMTSL2 intracellular trafficking."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Mutations in ADAMTSL2, FBN1, and LTBP3 genes are responsible for this condition."
explanation: The paper identifies ADAMTSL2 as one of the causal genes.
- name: FBN1 disease-causing variants
gene_term:
preferred_term: FBN1
term:
id: hgnc:3603
label: FBN1
association: Causative
relationship_type: CAUSATIVE
subtype: GD2
inheritance:
- name: Autosomal dominant
features: >
Heterozygous domain-specific FBN1 variants cause GD2 and affect fibrillin
microfibril deposition and TGF-beta-linked extracellular matrix biology.
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "FBN1 | fibrillin 1 | hgnc:3603 | Disease-causing germline mutation(s) in"
explanation: Orphanet lists FBN1 as a disease-causing gene for geleophysic dysplasia.
- reference: PMID:31350823
reference_title: "Skin fibroblasts of patients with geleophysic dysplasia due to FBN1 mutations have lysosomal inclusions and losartan improves their microfibril deposition defect."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "GPHYSD can be caused by mutations in FBN1, ADAMTLS2, and LTBP3 genes."
explanation: The FBN1 fibroblast study identifies FBN1 as a causal gene for GPHYSD.
- name: LTBP3 disease-causing variants
gene_term:
preferred_term: LTBP3
term:
id: hgnc:6716
label: LTBP3
association: Causative
relationship_type: CAUSATIVE
subtype: GD3
inheritance:
- name: Autosomal dominant
features: >
Heterozygous LTBP3 variants cause GD3, consistent with LTBP3 acting as a
microfibrillar-network component in the acromelic dysplasia spectrum.
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "LTBP3 | latent transforming growth factor beta binding protein 3 | hgnc:6716 | Disease-causing germline mutation(s) in"
explanation: Orphanet lists LTBP3 as a disease-causing gene for geleophysic dysplasia.
- reference: PMID:27068007
reference_title: "Mutations in LTBP3 cause acromicric dysplasia and geleophysic dysplasia."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "We conclude that LTBP3 is a novel component of the microfibrillar network involved in the acromelic dysplasia spectrum."
explanation: The human genetic study identifies LTBP3 as an acromelic dysplasia gene.
phenotypes:
- name: Short stature
category: Growth
frequency: VERY_FREQUENT
diagnostic: true
phenotype_term:
preferred_term: Short stature
term:
id: HP:0004322
label: Short stature
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0004322 | Short stature | Very frequent (99-80%)"
explanation: Orphanet reports short stature as very frequent in geleophysic dysplasia.
- name: Brachydactyly
category: Skeletal
frequency: FREQUENT
diagnostic: true
phenotype_term:
preferred_term: Brachydactyly
term:
id: HP:0001156
label: Brachydactyly
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0001156 | Brachydactyly | Frequent (79-30%)"
explanation: Orphanet reports brachydactyly as frequent in geleophysic dysplasia.
- name: Limitation of joint mobility
category: Musculoskeletal
frequency: FREQUENT
diagnostic: true
phenotype_term:
preferred_term: Limitation of joint mobility
term:
id: HP:0001376
label: Limitation of joint mobility
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0001376 | Limitation of joint mobility | Frequent (79-30%)"
explanation: Orphanet reports limitation of joint mobility as frequent in geleophysic dysplasia.
- name: Joint contracture
category: Musculoskeletal
frequency: FREQUENT
phenotype_term:
preferred_term: Joint contracture
term:
id: HP:0034392
label: Joint contracture
clinical_course: PROGRESSIVE
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0034392 | Joint contracture | Frequent (79-30%)"
explanation: Orphanet reports joint contracture as frequent in geleophysic dysplasia.
- reference: PMID:20301776
reference_title: Geleophysic Dysplasia.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "short hands and feet, progressive joint limitation and contractures, distinctive facial features"
explanation: GeneReviews supports progressive joint contractures as part of the clinical phenotype.
- name: Thickened skin
category: Dermatologic
frequency: FREQUENT
phenotype_term:
preferred_term: Thickened skin
term:
id: HP:0001072
label: Thickened skin
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0001072 | Thickened skin | Frequent (79-30%)"
explanation: Orphanet reports thickened skin as frequent in geleophysic dysplasia.
- name: Intrauterine growth retardation
category: Growth
frequency: FREQUENT
phenotype_term:
preferred_term: Intrauterine growth retardation
term:
id: HP:0001511
label: Intrauterine growth retardation
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0001511 | Intrauterine growth retardation | Frequent (79-30%)"
explanation: Orphanet reports intrauterine growth retardation as frequent.
- name: Polyhydramnios
category: Prenatal
frequency: FREQUENT
phenotype_term:
preferred_term: Polyhydramnios
term:
id: HP:0001561
label: Polyhydramnios
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0001561 | Polyhydramnios | Frequent (79-30%)"
explanation: Orphanet reports polyhydramnios as frequent.
- name: Short fetal femur length
category: Prenatal
frequency: FREQUENT
phenotype_term:
preferred_term: Short fetal femur length
term:
id: HP:0011428
label: Short fetal femur length
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0011428 | Short fetal femur length | Frequent (79-30%)"
explanation: Orphanet reports short fetal femur length as frequent.
- name: Short long bone
category: Skeletal
frequency: FREQUENT
phenotype_term:
preferred_term: Short long bone
term:
id: HP:0003026
label: Short long bone
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0003026 | Short long bone | Frequent (79-30%)"
explanation: Orphanet reports short long bones as frequent.
- name: Short foot
category: Skeletal
frequency: FREQUENT
phenotype_term:
preferred_term: Short foot
term:
id: HP:0001773
label: Short foot
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0001773 | Short foot | Frequent (79-30%)"
explanation: Orphanet reports short feet as frequent.
- name: Short palm
category: Skeletal
frequency: FREQUENT
phenotype_term:
preferred_term: Short palm
term:
id: HP:0004279
label: Short palm
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0004279 | Short palm | Frequent (79-30%)"
explanation: Orphanet reports short palms as frequent.
- name: Delayed skeletal maturation
category: Skeletal
frequency: FREQUENT
phenotype_term:
preferred_term: Delayed skeletal maturation
term:
id: HP:0002750
label: Delayed skeletal maturation
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0002750 | Delayed skeletal maturation | Frequent (79-30%)"
explanation: Orphanet reports delayed skeletal maturation as frequent.
- name: Phalangeal cone-shaped epiphyses
category: Skeletal
frequency: FREQUENT
phenotype_term:
preferred_term: Phalangeal cone-shaped epiphyses
term:
id: HP:0034281
label: Phalangeal cone-shaped epiphyses
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0034281 | Phalangeal cone-shaped epiphyses | Frequent (79-30%)"
explanation: Orphanet reports cone-shaped phalangeal epiphyses as frequent.
- name: Thin upper lip vermilion
category: Craniofacial
frequency: FREQUENT
phenotype_term:
preferred_term: Thin upper lip vermilion
term:
id: HP:0000219
label: Thin upper lip vermilion
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0000219 | Thin upper lip vermilion | Frequent (79-30%)"
explanation: Orphanet reports thin upper lip vermilion as frequent.
- name: Round face
category: Craniofacial
frequency: FREQUENT
phenotype_term:
preferred_term: Round face
term:
id: HP:0000311
label: Round face
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0000311 | Round face | Frequent (79-30%)"
explanation: Orphanet reports round face as frequent.
- name: Long philtrum
category: Craniofacial
frequency: FREQUENT
phenotype_term:
preferred_term: Long philtrum
term:
id: HP:0000343
label: Long philtrum
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0000343 | Long philtrum | Frequent (79-30%)"
explanation: Orphanet reports long philtrum as frequent.
- name: Anteverted nares
category: Craniofacial
frequency: FREQUENT
phenotype_term:
preferred_term: Anteverted nares
term:
id: HP:0000463
label: Anteverted nares
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0000463 | Anteverted nares | Frequent (79-30%)"
explanation: Orphanet reports anteverted nares as frequent.
- name: Short nose
category: Craniofacial
frequency: FREQUENT
phenotype_term:
preferred_term: Short nose
term:
id: HP:0003196
label: Short nose
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0003196 | Short nose | Frequent (79-30%)"
explanation: Orphanet reports short nose as frequent.
- name: Conductive hearing impairment
category: Audiologic
frequency: FREQUENT
phenotype_term:
preferred_term: Conductive hearing impairment
term:
id: HP:0000405
label: Conductive hearing impairment
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0000405 | Conductive hearing impairment | Frequent (79-30%)"
explanation: Orphanet reports conductive hearing impairment as frequent.
- name: Recurrent ear infections
category: Audiologic
frequency: FREQUENT
phenotype_term:
preferred_term: Recurrent ear infections
term:
id: HP:0410018
label: Recurrent ear infections
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0410018 | Recurrent ear infections | Frequent (79-30%)"
explanation: Orphanet reports recurrent ear infections as frequent.
- name: Increased size of nasopharyngeal adenoids
category: Respiratory
frequency: FREQUENT
phenotype_term:
preferred_term: Increased size of nasopharyngeal adenoids
term:
id: HP:0040261
label: Increased size of nasopharyngeal adenoids
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0040261 | Increased size of nasopharyngeal adenoids | Frequent (79-30%)"
explanation: Orphanet reports enlarged nasopharyngeal adenoids as frequent.
- name: Airway obstruction
category: Respiratory
frequency: FREQUENT
diagnostic: true
phenotype_term:
preferred_term: Airway obstruction
term:
id: HP:0006536
label: Airway obstruction
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0006536 | Airway obstruction | Frequent (79-30%)"
explanation: Orphanet reports airway obstruction as frequent.
- name: Asthma
category: Respiratory
frequency: FREQUENT
phenotype_term:
preferred_term: Asthma
term:
id: HP:0002099
label: Asthma
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0002099 | Asthma | Frequent (79-30%)"
explanation: Orphanet reports asthma as frequent.
- name: Elevated pulmonary artery pressure
category: Cardiopulmonary
frequency: FREQUENT
phenotype_term:
preferred_term: Elevated pulmonary artery pressure
term:
id: HP:0004890
label: Elevated pulmonary artery pressure
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0004890 | Elevated pulmonary artery pressure | Frequent (79-30%)"
explanation: Orphanet reports elevated pulmonary artery pressure as frequent.
- name: Valvular pulmonary stenosis
category: Cardiovascular
frequency: FREQUENT
phenotype_term:
preferred_term: Valvular pulmonary stenosis
term:
id: HP:0034350
label: Valvular pulmonary stenosis
evidence:
- reference: ORPHA:2623
reference_title: "Geleophysic dysplasia (Orphanet structured-database record)"
supports: SUPPORT
evidence_source: OTHER
snippet: "HP:0034350 | Valvular pulmonary stenosis | Frequent (79-30%)"
explanation: Orphanet reports valvular pulmonary stenosis as frequent.
diagnosis:
- name: Clinical and radiographic diagnosis
description: >
Diagnosis can be established clinically when the characteristic clinical and
radiographic phenotype is present, especially short stature, short hands and
feet, progressive joint limitation, skin thickening, and cardiac or airway
involvement.
evidence:
- reference: PMID:20301776
reference_title: Geleophysic Dysplasia.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "The clinical diagnosis of geleophysic dysplasia can be established in a proband with characteristic clinical and radiographic findings"
explanation: GeneReviews supports clinical/radiographic diagnosis.
- name: Molecular genetic testing
description: >
Molecular confirmation requires biallelic ADAMTSL2 pathogenic variants or a
heterozygous pathogenic variant in FBN1 or LTBP3.
diagnosis_term:
preferred_term: molecular genetic testing
term:
id: MAXO:0000533
label: molecular genetic testing
evidence:
- reference: PMID:20301776
reference_title: Geleophysic Dysplasia.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "the molecular diagnosis of geleophysic dysplasia is established in a proband with characteristic clinical and radiographic findings and one of the following on molecular genetic testing: biallelic pathogenic variants in ADAMTSL2 or a heterozygous pathogenic variant in either FBN1 or LTBP3."
explanation: GeneReviews specifies the gene and zygosity patterns for molecular diagnosis.
- name: Echocardiography for cardiac surveillance
description: >
Echocardiography is part of the recommended surveillance strategy because
progressive cardiac valve disease and other cardiac complications can be
life-threatening.
diagnosis_term:
preferred_term: echocardiography
term:
id: MAXO:0010203
label: echocardiography
evidence:
- reference: PMID:20301776
reference_title: Geleophysic Dysplasia.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Evaluation with cardiologist (including EKG and echocardiogram), pulmonologist, ENT specialist, and audiologist annually from birth until age three years, then at specific intervals."
explanation: GeneReviews recommends echocardiography-containing cardiac surveillance.
treatments:
- name: Physiotherapy for joint limitation
description: >
Ongoing physiotherapy is recommended to help prevent or reduce progression
of joint limitation and contractures.
treatment_term:
preferred_term: physical therapy
term:
id: MAXO:0000011
label: physical therapy
target_phenotypes:
- preferred_term: Limitation of joint mobility
term:
id: HP:0001376
label: Limitation of joint mobility
- preferred_term: Joint contracture
term:
id: HP:0034392
label: Joint contracture
evidence:
- reference: PMID:20301776
reference_title: Geleophysic Dysplasia.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Ongoing physiotherapy to prevent joint limitation"
explanation: GeneReviews lists ongoing physiotherapy as treatment of manifestations.
- name: Cardiac valve replacement for severe valvular disease
description: >
Severe valvular stenosis or insufficiency may require cardiac valve
replacement as a manifestation-directed surgical intervention.
treatment_term:
preferred_term: cardiac valve replacement
term:
id: MAXO:0000004
label: surgical procedure
target_phenotypes:
- preferred_term: Valvular pulmonary stenosis
term:
id: HP:0034350
label: Valvular pulmonary stenosis
evidence:
- reference: PMID:20301776
reference_title: Geleophysic Dysplasia.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "cardiac valve replacement in those with severe stenosis or insufficiency"
explanation: GeneReviews lists cardiac valve replacement for severe valvular disease.
- name: Tracheostomy for severe tracheal stenosis
description: >
Tracheostomy is used when severe tracheal stenosis creates critical airway
obstruction.
treatment_term:
preferred_term: tracheostomy
term:
id: MAXO:0000504
label: tracheostomy
target_phenotypes:
- preferred_term: Airway obstruction
term:
id: HP:0006536
label: Airway obstruction
evidence:
- reference: PMID:20301776
reference_title: Geleophysic Dysplasia.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "tracheostomy as needed for severe tracheal stenosis"
explanation: GeneReviews lists tracheostomy for severe tracheal stenosis.
- name: Pulmonary and supportive respiratory management
description: >
Restrictive lung disease, obstructive sleep apnea, asthma, and respiratory
compromise are managed by pulmonology-directed supportive care.
treatment_term:
preferred_term: supportive respiratory care
term:
id: MAXO:0000950
label: supportive care
target_phenotypes:
- preferred_term: Airway obstruction
term:
id: HP:0006536
label: Airway obstruction
- preferred_term: Asthma
term:
id: HP:0002099
label: Asthma
evidence:
- reference: PMID:20301776
reference_title: Geleophysic Dysplasia.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "treatment of restrictive lung disease, obstructive sleep apnea, and/or asthma per pulmonologist"
explanation: GeneReviews lists pulmonology-directed care for respiratory manifestations.
- name: Losartan for FBN1-related microfibril deposition defect
description: >
Losartan is an investigational, mechanism-directed candidate for
FBN1-related geleophysic dysplasia. In patient fibroblasts it did not reduce
lysosomal storage material but improved extracellular deposition of
fibrillin-1 microfibrils; this is cell-model evidence, not established
clinical treatment evidence.
treatment_term:
preferred_term: Pharmacotherapy
term:
id: NCIT:C15986
label: Pharmacotherapy
therapeutic_agent:
- preferred_term: losartan
term:
id: CHEBI:6541
label: losartan
target_mechanisms:
- target: Fibrillin microfibril matrix dysregulation
treatment_effect: MODULATES
description: Losartan improved fibrillin-1 microfibril deposition in FBN1-related GD fibroblasts.
evidence:
- reference: PMID:31350823
reference_title: "Skin fibroblasts of patients with geleophysic dysplasia due to FBN1 mutations have lysosomal inclusions and losartan improves their microfibril deposition defect."
supports: PARTIAL
evidence_source: IN_VITRO
snippet: "Treatment of GPHYSD fibroblasts carrying FBN1 mutations with the angiotensin II receptor type 1 inhibitor losartan that inhibits TGF-β signaling did not reduce the storage but improved the extracellular deposition of fibrillin-1 microfibrils."
explanation: This supports losartan as a candidate mechanism-directed therapy in fibroblasts but not as proven patient treatment.
animal_models:
- species: Mouse
genotype: Adamtsl2 knockout
description: >
Adamtsl2-null mice are a model of ADAMTSL2-related geleophysic dysplasia.
They die at birth and show bronchial epithelial dysplasia, abnormal
glycogen-rich inclusions, bronchial microfibril changes, and increased
bronchial epithelial TGF-beta signaling.
genes:
- preferred_term: Adamtsl2
term:
id: hgnc:14631
label: ADAMTSL2
associated_phenotypes:
- Airway obstruction
evidence:
- reference: PMID:25762570
reference_title: "Adamtsl2 deletion results in bronchial fibrillin microfibril accumulation and bronchial epithelial dysplasia--a novel mouse model providing insights into geleophysic dysplasia."
supports: SUPPORT
evidence_source: MODEL_ORGANISM
snippet: "Here, we investigated mice with targeted Adamtsl2 inactivation as a new model for GD (Adamtsl2(-/-) mice)."
explanation: The paper explicitly introduces targeted Adamtsl2 inactivation mice as a GD model.
references:
- reference: ORPHA:2623
title: Geleophysic dysplasia
findings: []
- reference: PMID:20301776
title: Geleophysic Dysplasia.
findings: []
- reference: PMID:25762570
title: Adamtsl2 deletion results in bronchial fibrillin microfibril accumulation and bronchial epithelial dysplasia--a novel mouse model providing insights into geleophysic dysplasia.
findings: []
- reference: PMID:27068007
title: Mutations in LTBP3 cause acromicric dysplasia and geleophysic dysplasia.
findings: []
- reference: PMID:31350823
title: Skin fibroblasts of patients with geleophysic dysplasia due to FBN1 mutations have lysosomal inclusions and losartan improves their microfibril deposition defect.
findings: []
- reference: PMID:31516831
title: "Geleophysic dysplasia: novel missense variants and insights into ADAMTSL2 intracellular trafficking."
findings: []
- reference: PMID:32880985
title: "Acromelic dysplasias: how rare musculoskeletal disorders reveal biological functions of extracellular matrix proteins."
findings: []
- reference: PMID:38300707
title: ADAMTSL2 mutations determine the phenotypic severity in geleophysic dysplasia.
findings: []
- reference: PMID:39705488
title: "Expanded phenotypes and pathogenesis of geleophysic dysplasia 3 resulted from a de novo LTBP3 mutation: A case report."
findings: []
- reference: PMID:40481143
title: Dysregulation of cell migration by matrix metalloproteinases in geleophysic dysplasia.
findings: []
This report is retrieval-only and is generated directly from Asta results.
search_papers_by_relevance with snippet_search.