K. Buiting et al., A 5-kb imprinting center deletion in a family with Angelman syndrome reduces the shortest region of deletion overlap to 880 bp, HUM GENET, 105(6), 1999, pp. 665-666
Imprinting on human chromosome 15q11-q13 is controlled by a bipartite impri
nting center (TC) that maps to the SNRPN locus. Deletions of the IC result
in an imprinting defect and Prader-Willi syndrome or Angel-man syndrome (AS
). We have now identified a 5-kb IC deletion in an English AS patient (AS-L
O); this represents the smallest microdeletion found in AS and narrows down
the shortest region of deletion overlap to 880 bp.