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Dysspondyloenchondromatosis (DSC) associated with COL2A1 mutation: Clinical and radiological overlap with spondyloepimetaphyseal dysplasia‐Strudwick type (SEMD‐S)
Author(s) -
Merrick Blair,
Calder Alistair,
Wakeling Emma
Publication year - 2015
Publication title -
american journal of medical genetics part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.064
H-Index - 112
eISSN - 1552-4833
pISSN - 1552-4825
DOI - 10.1002/ajmg.a.37282
Subject(s) - mutation , dysplasia , medicine , radiological weapon , gene mutation , pathology , genetics , biology , gene , radiology
Dysspondyloenchondromatosis (DSC) is a rare skeletal dysplasia characterized by enchondroma‐like lesions and anisospondyly. The former leads to discrepancies in limb length, and the latter, to progressive kyphoscoliosis. Two recent cases have highlighted the genetic heterogeneity of DSC, one demonstrating the presence and, the other, the absence of a COL2A1 mutation. This may have important clinical implications, for example, screening for complications including atlanto‐axial instability associated with type II collagenopathies, as well as long‐term patient management. We report on a case with radiographic features of DSC with overlap into the type II collagenopathy spondyloepimetaphyseal dysplasia, Strudwick type, who was found to carry a novel heterozygous mutation in the COL2A1 gene. Testing for COL2A1 mutations should be performed in all patients with radiological features of DSC. Further research is needed to identify the underlying molecular cause in cases where no COL2A1 mutation is identified. © 2015 Wiley Periodicals, Inc.