The existence of paternal uniparental disomy of chromosome 16 [upd(16)pat]
has previously been suspected but has not been proven. We report prenatal d
etection and follow-up of isodisomic upd(16)pat in a child with minimal def
ects but otherwise normal development. Our results indicate that isodisomic
upd(16)pat is associated with a normal outcome if no recessive mutation is
reduced to homozygosity. (C) 2000 Wiley-Liss, Inc.