For other nonaffective psychotic disorders, exposure of 1–<5 years (aOR = 1.42, 95% CI = 1.16–1.74) and ≥5 years (aOR = 1.50, 95% CI = 1.24–1.81) to prolactin-increasing antipsychotics were both associated with increased breast cancer odds. This evidence concerns the gene PRL and breast cancer.