Table II.

KIR Gene/Genotype Frequencies in Control and Preeclampsia Mothers and Those Preeclampsia Mothers Presented with Fetal C2 in Homozygous (2 + 2) or Heterozygous (1 + 2) Form

Gene/genotype	Control mothers	Preeclampsia mothers	Preeclampsia subsets with fetal C2 (a, b, d, f, g)a
	% (n = 201)	% (n = 200)	% (n = 109)
2DL2	53 (107)	52 (103)	40b (44) P = 0.033
2DS1	47 (94)	38 (76)	34b (37) P = 0.031
2DS2	53 (108)	52 (104)	42 (46) P = 0.058
2DS3	29 (58)	24 (47)	15b (16) P = 0.005
2DS5	39 (83)	32 (83)	33 (36) P = 0.179
2DL5	58 (116)	47b (94) P = 0.036	41b (45) P = 0.006
Genotype AA	25 (50)	35b (69) P = 0.038	44b(48) P = 0.001

The B haplotypes KIR, 2DL2, 2DL5, 2DS1, 2DS3, and 2DS5 all occur at lower frequency in the preeclampsia mothers presented with HLA-C2 as compared with the controls.

^aThe letters a, b, d, f, and g refer to the subsets in Table III and Fig. 1 B.

^bSignificantly different frequencies between preeclampsia and control mothers.