Smith-McCort dysplasia (SMC) is a rare autosomal recessive spondylo-epimetaphyseal dysplasia with skeletal features identical to those of Dyggve-Melchior-Clausen disease [DS:H00757] but with normal intelligence and no microcephaly. SMC has been shown to result from mutations in the DYM gene, which encodes the Golgi protein DYMECLIN. Recently, a missense mutation in RAB33B has been identified in a SMC family. RAB33B is another Golgi protein involved in retrograde transport of Golgi vesicles.
Category
Congenital malformation
Brite
Human diseases in ICD-11 classification [BR:br08403]
20 Developmental anomalies
Multiple developmental anomalies or syndromes
LD24 Syndromes with skeletal anomalies as a major feature
H02497 Smith-McCort dysplasia
