PDX1 and familial pancreatic carcinoma: BMI ≧ 27 was associated with an increased pancreatic cancer risk only among individuals with the PDX1 rs9581943 GA or AA genotype (OR = 2.99, 95% CI: 1.89–4.72) but not among those with the GG genotype (OR = 1.13, 95% CI: 0.63–2.00).