Table 2.

Affected sib-pair analysis near 1q23 (1q21–1q31)

Marker	Inter-marker distance, cM	African-American, n = 23	European-American, n = 48	All pedigrees, n = 78
SPTA1		0.28	0.50	0.041
	1
D1s1653		0.015	0.42	0.047
	8
D1s1679		0.0007	0.21	0.0042
	3
D1s1677		0.0036	0.30	0.035
	7
FcγRIIA		0.0005	0.016	0.0003
	13
D1s1589		0.029	0.038	0.008
	7
lamc1		0.036	0.056	0.016

All neighboring loci of FcgRIIA with affected sib-pair sharing P values <0.05 are shown. Distances between the markers spanning this region are given in cM and were estimated from the sex average map distances supplied by Research Genetics for the version 8 Weber Screening Set and the Genome Database (http://gdbwww.gdb.org).