Table 1. ABCG2 functions of participants.

	Total		Male		Female
Function of ABCG2	N	%	N	%	N	%
Full function	2,338	46.7	1,592	46.8	746	46.5
3/4 function (mild dysfunction)	1,971	39.4	1,332	39.2	639	39.8
1/2 function (moderate dysfunction)	619	12.4	424	12.5	195	12.2
≤1/4 function (severe dysfunction)	77	1.5	53	1.6	24	1.5
Total	5,005	100.0	3,401	100.0	1,604	100.0