borderline significanceP = 0.057
The AC genotype was also associated with an increased risk of MPN, but the P value for Chinese was at borderline significance, likely due to relatively few patients (AC vs AA: OR = 2.02; 95 % CI: 1.00–4.08, P = 0.057, for Chinese, and OR = 1.89; 95 % CI: 1.05–3.41, P = 0.034, for Swedish).