An additional C-positive band in the centromeric region (p11) was obse
rved in a man. By GTG- and RBA-techniques it was positively stained bu
t by QFQ-technique the staining intensity was negative. Although he wa
s identified through fetal loss in his wife, it apparently represents
a familial variant whose clinical significance is unknown. (C) 1994 Wi
ley-Liss, Inc.