Home > Encyclopedia of Genetic Disorders > Otopalatodigital syndrome

Definition

Otopalatodigital (OPD) syndrome, also called digitootopalatal syndrome or palatootodigital syndrome, is a rare X-linked genetic disorder that affects bone and facial structure. OPD is fully expressed in males. Females are only mildly affected.

Description

There are two forms of OPD syndrome. Type I is inherited through an X-linked trait with intermediate expression in females while type II is inherited through an X-linked recesssive trait. OPD syndrome type I is also called Taybi syndrome. OPD syndrome type II is alternately called Andre syndrome, cranioorodigital syndrome, or faciopalatoosseous (FPO) syndrome.

A genetic disorder called frontometaphyseal dysplasia, or FMD, has very similar...