A transcript, H73492, that had been assigned, in error, to the PWS/AS critical region
(D15S1035-D15S165), showed preferential paternal expression in monochromosomal mouse A9 hybrids
retaining either a paternal or maternal copy of human chromosome 15 (Meguro
M et al, 2001). H73492 exists in two copies within a large recent segmental duplication (Riley
B et al, 2002).