Book excerpt: Eric Engel and Stylianos Antonarakis have written the most authoritative and vital reference on molecular and clinical aspects of uniparental disomy (UPD) and genomic imprinting to date. Genomic Imprinting and Uniparental Disomy in Medicine features comprehensive overviews of a multitude of genetic disorders linked to UPD, with a strong emphasis on clinical consequences. This book will provide readers with the tools necessary to identify and treat diseases associated with nontraditional chromosomal inheritance. Genomic Imprinting and Uniparental Disomy in Medicine features handy tables summarizing clinical phenotypes and chromosomal involvement in UPD, as well as clear illustrations on imprinting mechanisms and diagnostic testing. This authoritative, completely up-to-date practical reference will be useful for any clinical geneticist, genetic counselor, physician, or researcher encountering patients with such disorders or studying complex disease mechanisms.