Human Platelet Antigen Alleles in 998 Taiwanese Blood Donors Determined by Sequence-Specific Primer Polymerase Chain Reaction

Table 2

Estimate of HPA incompatibility probability for assessing the risk of FNAIT and PTR.

	Frequency major allele (%)	Heterozygosity (%)	Fetomaternal incompatibility		Mismatch platelet transfusion
			Anti-a risk (%)	Anti-b risk (%)
HPA-1	99.55	0.90	<0.01	0.45	0.89
HPA-2	96.49	6.61	0.12	3.27	6.54
HPA-3	55.81	52.30	10.90	13.76	37.16
HPA-4	99.75	0.50	<0.01	0.25	0.50
HPA-5	98.50	2.96	0.02	1.46	2.92
HPA-6	97.75	4.41	0.05	2.15	4.31
HPA-15	53.71	49.73	11.51	13.35	37.76