" /> Fibrochondrogenesis 1 - CISMeF





Preferred Label : Fibrochondrogenesis 1;

Symbol : FBCG1;

CISMeF acronym : FBCG1;

Type : Phenotype, molecular basis known;

Description : Fibrochondrogenesis is a severe, autosomal recessive, short-limbed skeletal dysplasia clinically characterized by a flat midface with a small nose and anteverted nares, significant shortening of all limb segments but relatively normal hands and feet, and a small bell-shaped thorax with a protuberant abdomen. Radiographically, the long bones are short and have broad metaphyseal ends, giving them a dumb-bell shape. The vertebral bodies are flat and, on lateral view, have a distinctive pinched appearance, with a hypoplastic posterior end and a rounded anterior end. The ribs are typically short and wide and have metaphyseal cupping at both ends (summary by Tompson et al., 2010). - Genetic Heterogeneity of Fibrochondrogenesis Fibrochondrogenesis-2 (FBCG2; 614524) is caused by mutation in the COL11A2 gene (120290) on chromosome 6p21.3.;

Inheritance : Autosomal recessive;

Molecular basis : Caused by mutation in the collagen XI, alpha-1 polypeptide gene (COL11A1, 120280.0008);

Laboratory abnormalities : Disorganized growth plate cartilage;

Prefixed ID : #228520;

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26/05/2025


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