Multicenter Study Links Heat-Not-Burn Tobacco to 63.9% Crohn's Postoperative Recurrence Rate
Observational data from 937 post-resection Crohn's patients associate heat-not-burn tobacco with significantly elevated endoscopic recurrence. The link held after adjustment and in prophylaxis subgroups, extending known smoking risks. Prospective confirmation and mechanistic studies are needed before changing clinical guidelines.
The Parigi et al. study in the American Journal of Gastroenterology classified consecutive Crohn's patients into nonsmokers, conventional smokers, heat-not-burn tobacco users, and e-cigarette users, excluding dual users. Primary endpoint was Rutgeerts score ≥2 at endoscopic evaluation within 12 months. Recurrence reached 69.4% among conventional smokers, 63.9% for heat-not-burn users, and 60.6% for e-cigarette users.
Even among patients on pharmacologic prophylaxis, elevated recurrence and higher fecal calprotectin were observed with heat-not-burn use. The observational design cannot establish causality and lacked data on device type, nicotine dose, or duration of alternative tobacco exposure. Prior literature on conventional smoking and Crohn's recurrence provides mechanistic plausibility but does not directly address these newer products.
Larger prospective cohorts with serial biomarker and endoscopic assessments are required to test whether switching from cigarettes to heat-not-burn products alters recurrence trajectories. Regulatory bodies should consider mandating postoperative counseling language specific to these devices.
Parigi et al.: Independent European validation cohort will report heat-not-burn recurrence rate above 55% at 12 months in at least 200 patients by December 2027.
Sources (2)
- [1]Primary Source(https://doi.org/10.14309/ajg.0000000000003810)
- [2]Supporting Source(https://pubmed.ncbi.nlm.nih.gov/31277988)