Clinically Significant Minor Blood Group Antigens amongst North Indian Donor Population

Table 4

Phenotype frequencies of Duffy blood group system.

Phenotype	In 1000 cases (%)	Indian study by Thakral et al. [7]	Indian study by Chaudhary et al. [6]	Indian study by Nanu and Thapliyal [8]	In whites [9–11]	In blacks [9–11]
𝐅𝐲^𝐚 + 𝐅𝐲^𝐛 −	417  (41.7%)	43.9%	43%	40.8%	17%	9%
Fy^a−Fy^b+	127 (12.7%)	13.3%	24%	16.2%	34%	22%
𝐅𝐲^𝐚 + 𝐅𝐲^𝐛 +	456  (45.6%)	42.9%	30%	42.6%	49%	1%
𝐅𝐲^𝐚 − 𝐅𝐲^𝐛 −	0 (0%)	0%	3%	0.44%	<0.1%	68%