Editorial Comment: Foreword to Very Rare Defects: What Can We Learn?

摘要

The American Journal of Medical Genetics Part C, is pleased to produce and publish this issue of Seminars in Medical Genetics, Very rare defects, What can we learn? The Guest Editors, Drs. Castilla and Mastroiacovo, and their colleagues have compiled an interesting series of articles on eight uncommonly occurring congenital malformations, all of which are certainly defects of blastogenesis [Opitz et al, 2002] and most of which have a birth prevalence of less than in 100,000 births.