PMID- 34620629 OWN - NLM STAT- MEDLINE DCOM- 20220304 LR - 20220307 IS - 1538-7755 (Electronic) IS - 1055-9965 (Linking) VI - 30 IP - 12 DP - 2021 Dec TI - Ranitidine Use and Risk of Upper Gastrointestinal Cancers. PG - 2302-2308 LID - 10.1158/1055-9965.EPI-21-0831 [doi] AB - BACKGROUND: The discovery that ranitidine is contaminated with N-nitrosodimethylamine, a suspected human carcinogen, raises the hypothesis of a gastrointestinal carcinogenic effect; however, evidence remains inconclusive. METHODS: We used the nationwide Danish Prescription Registry to identify a cohort of incident ranitidine users and two active comparator cohorts comprising users of other histamine-2 receptor blockers (H2RB) and users of proton pump inhibitors (PPI). All Danish adults with a first prescription of ranitidine, other H2RBs, or PPIs in 1996 through 2008 were followed virtually completely through 2018 for incidence of esophageal, stomach, liver, and pancreatic cancers. We used Cox regression with propensity-score weighting to calculate hazard ratios and 10-year cumulative risk with 95% confidence intervals. RESULTS: We ascertained 276 newly diagnosed esophageal, 342 stomach, 133 hepatocellular, and 517 pancreatic cancers among ranitidine users during follow-up (median 14 years). In comparison with use of other H2RBs or PPIs, we found no consistent evidence of increased HRs or excess 10-year cumulative risk of any upper gastrointestinal cancer following ranitidine use. We observed no association after restriction to subjects with at least 5 or 10 prescriptions or those with 10 prescriptions and at least 10 years of follow-up. CONCLUSIONS: Our large prospective study using high-quality prescription and cancer incidence data, with two active comparator groups, provides no compelling evidence that ranitidine increases the risk of upper gastrointestinal cancers. IMPACT: Our results, which do not support any carcinogenic effect on esophagus, stomach, liver or pancreas, should be reassuring for millions of concerned past users of ranitidine. CI - (c)2021 American Association for Cancer Research. FAU - Adami, Hans-Olov AU - Adami HO AD - Clinical Effectiveness Group, Institute of Health and Society, University of Oslo, Oslo, Norway. hadami@hsph.harvard.edu. AD - Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden. AD - Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts. FAU - Trolle Andersen, Ina AU - Trolle Andersen I AUID- ORCID: 0000-0002-8140-1548 AD - Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus University, Aarhus, Denmark. AD - Department of Clinical Medicine, Aarhus University, Aarhus, Denmark. FAU - Heide-Jorgensen, Uffe AU - Heide-Jorgensen U AD - Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus University, Aarhus, Denmark. AD - Department of Clinical Medicine, Aarhus University, Aarhus, Denmark. FAU - Chang, Ellen T AU - Chang ET AD - Center for Health Sciences, Exponent, Inc., Menlo Park, California. AD - Sun Yat-sen University Cancer Center, Guangzhou, China. FAU - Norgaard, Mette AU - Norgaard M AD - Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus University, Aarhus, Denmark. AD - Department of Clinical Medicine, Aarhus University, Aarhus, Denmark. FAU - Sorensen, Henrik Toft AU - Sorensen HT AD - Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus University, Aarhus, Denmark. AD - Department of Clinical Medicine, Aarhus University, Aarhus, Denmark. AD - Department of Epidemiology, Boston University School of Public Health, Boston, Massachusetts. LA - eng PT - Journal Article DEP - 20211007 PL - United States TA - Cancer Epidemiol Biomarkers Prev JT - Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology JID - 9200608 RN - 0 (Histamine H2 Antagonists) RN - 884KT10YB7 (Ranitidine) RN - M43H21IO8R (Dimethylnitrosamine) SB - IM EIN - Cancer Epidemiol Biomarkers Prev. 2022 Mar 1;31(3):692. PMID: 35253044 MH - Adult MH - Case-Control Studies MH - Denmark MH - Dimethylnitrosamine/poisoning MH - Female MH - Gastrointestinal Neoplasms/*chemically induced MH - Histamine H2 Antagonists/administration & dosage/*adverse effects MH - Humans MH - Male MH - Middle Aged MH - Proportional Hazards Models MH - Prospective Studies MH - Ranitidine/administration & dosage/*adverse effects MH - Registries EDAT- 2021/10/09 06:00 MHDA- 2022/03/05 06:00 CRDT- 2021/10/08 06:09 PHST- 2021/07/08 00:00 [received] PHST- 2021/09/01 00:00 [revised] PHST- 2021/09/30 00:00 [accepted] PHST- 2021/10/09 06:00 [pubmed] PHST- 2022/03/05 06:00 [medline] PHST- 2021/10/08 06:09 [entrez] AID - 1055-9965.EPI-21-0831 [pii] AID - 10.1158/1055-9965.EPI-21-0831 [doi] PST - ppublish SO - Cancer Epidemiol Biomarkers Prev. 2021 Dec;30(12):2302-2308. doi: 10.1158/1055-9965.EPI-21-0831. Epub 2021 Oct 7.