Abstract
Type XI collagen is a minor component of cartilage collagen. Mutations of the three genes coding for its proteins are expressed in a peculiar phenotype. Clinical changes include facial anomalies, cleft palate and hearing defects. Ocular changes occur in some disorders. Radiographs show a spectrum of epiphyseal dysplasias with wide metaphyses and spondylar abnormalities. The pattern of clinical and radiographic changes is also found in some type II collagenopathies. On the basis of molecular studies, three type XI collagenopathies have been defined: Stickler syndrome type II, and dominant and recessive oto-spondylo-megaepiphyseal dysplasia (OSMED). Stickler syndrome I and Kniest dysplasia are type II collagenopathies with considerable clinical and radiographic overlap. Inborn errors of cartilage collagen formation lead to a family of genetically heterogeneous but pathogenetically related and hence phenotypically similar disorders. The type XI collagenopathies are part of this family.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
