" /> Ehlers-danlos syndrome, classic type, 1 - CISMeF





Preferred Label : Ehlers-danlos syndrome, classic type, 1;

Symbol : EDSCL1;

CISMeF acronym : EDSCL1; EDS1;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Ehlers-danlos syndrome, gravis type; Eds I; EDS1; Ehlers-danlos syndrome, type I; Ehlers-danlos syndrome, severe classic type;

Description : The Ehlers-Danlos syndromes (EDS) are a group of heritable connective tissue disorders that share the common features of skin hyperextensibility, articular hypermobility, and tissue fragility (Beighton, 1993). In the Villefranche classification of EDS (Beighton et al., 1998), 6 main descriptive types were substituted for earlier types numbered with Roman numerals: classic type (EDS I and EDS II, 130010), hypermobility type (EDS III, 130020), vascular type (EDS IV, 130050), kyphoscoliosis type (EDS VI, 225400), arthrochalasia type (EDS VIIA and VIIB, 130060), and dermatosparaxis type (EDS VIIC, 225410). Six other forms were listed, including a category of 'unspecified forms.' Major and minor diagnostic criteria were defined for each type and complemented whenever possible with laboratory findings. The main features of classic Ehlers-Danlos syndrome (EDS I and EDS II) are loose-jointedness and fragile, bruisable skin that heals with peculiar 'cigarette-paper' scars (Beighton, 1993). In EDS I, skin involvement is marked and joint laxity is generalized and gross, with musculoskeletal deformity and diverse orthopedic complications. Prematurity occurs in approximately 50% of cases. Internal complications such as aortic and bowel rupture may occasionally occur. EDS II has all the stigmata of EDS I, but to a minor degree, and some patients may easily remain undiagnosed (summary by Steinmann et al., 2002).;

Inheritance : Autosomal dominant;

Molecular basis : Caused by mutation in the collagen V, alpha-1 polypeptide gene (COL5A1, 120215.0002); Caused by mutation in the collagen V, alpha-2 polypeptide gene (COL5A2, 120190.0001);

Prefixed ID : #130000;

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05/05/2025


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