Pancreatic cancer risk in IBD with PSC

What is known

• A bi-national population-based cohort of 141,960 IBD patients found PSC-IBD had significantly increased risk of hepato-pancreato-biliary cancers, which included pancreatic cancer, versus the general population. ¹
• PSC-IBD patients have long been recognised as having a particular increased risk of hepato-pancreato-biliary cancers compared with IBD without PSC. ¹
• Evidence on PSC and pancreatic cancer is mixed: an early Swedish study of 604 PSC patients reported a 14-fold increase, but later studies found far fewer cases, and the Swedish study did not control for IBD. ^2,3
• In US veterans, PSC patients had an increased rate of pancreatic cancer independent of chronic pancreatitis history; among PSC, IBD, and PSC-IBD groups, age, chronic pancreatitis, diabetes, male sex and smoking were also associated. ³

What is unknown / caveats

• Early PSC studies reported a 14-fold pancreatic cancer excess that later studies did not reproduce ^2,3
• Retrieved excerpts do not give a direct head-to-head numeric risk estimate of pancreatic cancer for PSC-IBD versus IBD-without-PSC
• Confounders such as chronic pancreatitis, diabetes, and smoking are shared risk factors and one key early study did not control for IBD ^3,4
• No pancreatic-cancer-specific surveillance is recommended given the paucity of data ²
• The magnitude of any pancreatic-cancer-specific excess attributable to PSC in IBD is not quantified in these excerpts.

References

1. Yu J, Refsum E, Helsingen LM, Folseraas T, Ploner A, Wieszczy P, Barua I, Jodal HC, Melum E, Løberg M, Blom J, Bretthauer M, Adami HO, Kalager M, Ye W. Risk of hepato-pancreato-biliary cancer is increased by primary sclerosing cholangitis in patients with inflammatory bowel disease: A population-based cohort study. United European Gastroenterol J. 2022. PMID: 35107865.

2. Fung BM, Lindor KD, Tabibian JH. Cancer risk in primary sclerosing cholangitis: Epidemiology, prevention, and surveillance strategies. World J Gastroenterol. 2019. PMID: 30783370.

3. Nguyen A, Sagvand BT, Alizadeh M, Nguyen C, Scott W, von Rosenvinge EC. Primary sclerosing cholangitis and pancreatic cancer: A retrospective cohort study of United States veterans. Front Gastroenterol (Lausanne). 2022. PMID: 38347877.

4. Everhov ÅH, Erichsen R, Sachs MC, Pedersen L, Halfvarson J, Askling J, Ekbom A, Ludvigsson JF, Sørensen HT, Olén O. Inflammatory bowel disease and pancreatic cancer: a Scandinavian register-based cohort study 1969-2017. Aliment Pharmacol Ther. 2020;52(1):143-154. PMID: 32412143.

For educational use only, not a substitute for clinical judgement or medical advice. Consult qualified clinicians for diagnosis and treatment decisions. This tool may contain errors; use the flag button below to report inaccurate or harmful content.

Draft, generated by the IBDology RAG and not yet clinician-reviewed. Answers are grounded in the retrieved literature listed above; a high faithfulness score means the answer matches its sources, not that the sources are correct.