Prostaglandin F synthase (PGF synthase) is a member of the aldo-keto reductase superfamily of proteins which catalyze the conversion of aldehydes and ketones to thier corresponding alcohols. Prostaglandin F synthase is used in cancer research since it is upregulated in many cancers such as breast and prostate cancer. PGF synthase is also used to study kidney and renal cell carcinoma.