An Infant with Blended Phenotype of Zellweger Spectrum Disorder and Congenital Muscular Dystrophy

We report a newborn born to a consanguineous couple with antenatally detected dilatation of third ventricle, unilateral talipes, and intra uterine growth retardation. On examination, there was facial dysmorphism, hypotonia, encephalopathy, joint laxity and muscle hypertrophy in addition to left foot talipes. On evaluation, there were renal cortical cysts, rhizomelia, chondrodysplasia punctata and elevated muscle enzymes, along with a dilated third ventricle. As the phenotype was not consistent with any of the muscular dystrophies or the peroxisomal disorders, an exome sequencing was requested. It revealed a combination of Zellweger syndrome and Ullrich congenital muscular dystrophy type 1.