BACKGROUND & AIMS: Use of proton pump inhibitors (PPIs) has been associated with elevated levels of serum gastrin. Because hypergastrinemia increases colorectal mucosa proliferation and has been associated with risk of colorectal cancer (CRC) in human beings, we conducted a large population-based study in Denmark to assess whether PPI use is associated with CRC risk. METHODS: We conducted the study in North Jutland County, Denmark. From the County Hospital Discharge Registry we identified incident cases of CRC during the period 1989-2005. Using risk set sampling we selected approximately 10 controls from the Danish Civil Registration System, with matching for sex and birth year. PPI use was ascertained in the Prescription Database of North Jutland (and so recorded before CRC diagnosis) and analyzed with conditional logistic regression adjusted for multiple covariates. RESULTS: We identified 5589 cases of CRC which were compared with 55,890 controls. In a comparison of ever to never or rare users (< or =30 pills during observation period), no evidence was observed of increased risk (adjusted odds ratio [OR], 1.11; 95% confidence interval [CI], 0.97-1.27). When we compared the most intense users of PPI (more than every other day) with never or rare users, we found that no increased cancer risk was shown in either short-term users (adjusted OR, 1.07; 95% CI, 0.86-1.34) or long-term users (>7 years; adjusted OR = 1.09; 95% CI, 0.58-2.06). CONCLUSIONS: The use of PPIs in clinical practice does not measurably increase the risk of CRC.
BACKGROUND & AIMS: Use of proton pump inhibitors (PPIs) has been associated with elevated levels of serum gastrin. Because hypergastrinemia increases colorectal mucosa proliferation and has been associated with risk of colorectal cancer (CRC) in human beings, we conducted a large population-based study in Denmark to assess whether PPI use is associated with CRC risk. METHODS: We conducted the study in North Jutland County, Denmark. From the County Hospital Discharge Registry we identified incident cases of CRC during the period 1989-2005. Using risk set sampling we selected approximately 10 controls from the Danish Civil Registration System, with matching for sex and birth year. PPI use was ascertained in the Prescription Database of North Jutland (and so recorded before CRC diagnosis) and analyzed with conditional logistic regression adjusted for multiple covariates. RESULTS: We identified 5589 cases of CRC which were compared with 55,890 controls. In a comparison of ever to never or rare users (< or =30 pills during observation period), no evidence was observed of increased risk (adjusted odds ratio [OR], 1.11; 95% confidence interval [CI], 0.97-1.27). When we compared the most intense users of PPI (more than every other day) with never or rare users, we found that no increased cancer risk was shown in either short-term users (adjusted OR, 1.07; 95% CI, 0.86-1.34) or long-term users (>7 years; adjusted OR = 1.09; 95% CI, 0.58-2.06). CONCLUSIONS: The use of PPIs in clinical practice does not measurably increase the risk of CRC.
Authors: Judy S Wang; Andrea Varro; Charles J Lightdale; Nantaporn Lertkowit; Kristen N Slack; Michael L Fingerhood; Wei Yann Tsai; Timothy C Wang; Julian A Abrams Journal: Am J Gastroenterol Date: 2009-11-10 Impact factor: 10.864
Authors: Ellen T Chang; Deirdre P Cronin-Fenton; Søren Friis; Henrik Hjalgrim; Henrik Toft Sørensen; Lars Pedersen Journal: Cancer Epidemiol Biomarkers Prev Date: 2010-01 Impact factor: 4.254
Authors: Adeyinka O Laiyemo; Farin Kamangar; Pamela M Marcus; Philip R Taylor; Jarmo Virtamo; Demetrius Albanes; Rachael Z Stolzenberg-Solomon Journal: Cancer Causes Control Date: 2009-10-17 Impact factor: 2.506
Authors: Deirdre P Cronin-Fenton; Lars Pedersen; Timothy L Lash; Søren Friis; John A Baron; Henrik T Sørensen Journal: Breast Cancer Res Date: 2010-03-01 Impact factor: 6.466
Authors: A H Poulsen; S Christensen; J K McLaughlin; R W Thomsen; H T Sørensen; J H Olsen; S Friis Journal: Br J Cancer Date: 2009-04-07 Impact factor: 7.640