Novel mutation and atlantoaxial dislocation in two siblings from India with Dyggve–Melchior–Clausen syndrome

Dyggve–Melchior–Clausen syndrome is a rare variety of spondyloepimetaphyseal dysplasia which often resembles Morquio syndrome. We describe two siblings from India with the condition and report a novel homozygous mutation in them (c.1172_1173insC). One of them had atlantoaxial dislocation.