Table 2. Associations between genetic variation in driver kinase loci and risk of breast cancer at ≤40 years of first age at diagnosis.

CDKL2, rs6852678
	Controls		Cases
	n	%	n	%	OR	95% CI
C/C	39	51.3	62	51.2	1.00
C/T	28	36.8	54	44.6	1.21	0.66–2.23
T/T	9	11.8	5	4.1	0.35	0.11–1.12
Total	76		121
Recessive					0.32	0.10–1.00
					Precessive = 0.044