Key clinical point: Cancer diagnoses were seen in people who took H₂ drugs, compared with the general population, but the people taking ranitidine and famotidine also had more oncologic risk factors.

Major finding: Incidence of cancer was respectively 14.69%, 21.24%, and 5.38% for the ranitidine group, the famotidine group, and the group representing the general population without use of either H₂ blocker.

Study details: This cohort study drew comparisons based on medical records for 65 million people.

Disclosures: No outside funding was used for the study.