New Insights into Chromosomal Regions 15p11.2–15q11.2 by Studying Submicroscopic Variations Using Molecular Cytogenetics

Abstract excerpt

INTRODUCTION: The chromosome region 15p11.2-15q11.2 contains heterochromatic and euchromatic DNA segments. Heteromorphisms in 15p11.2-15q11.1 have been reported, as has been a euchromatic variant (EV) region in 15q11.2. METHODS: Fluorescence in situ hybridization (FISH) was used to examine the genomic regions 15p11.2-15q11.2 in parallel and at the single-cell level. A total of 44 cases with normal chromosomes 15...