CYP19A1 and endometrial cancer: Candidate studies have also identified associations between several different CYP19A1 variants and endometrial cancer (Paynter et al. 2005, Tao et al. 2007, Setiawan et al. 2009, Low et al. 2010), with some evidence of stronger associations in women with higher BMI (Setiawan et al. 2009).