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CYP1A2 Genetic Variation, Coffee Intake, and Kidney Dysfunction.

Sara Mahdavi1, Paolo Palatini2, Ahmed El-Sohemy1

  • 1Department of Nutritional Sciences, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.

JAMA Network Open
|January 26, 2023
PubMed
Summary
This summary is machine-generated.

Heavy coffee consumption increases kidney disease risk in slow caffeine metabolizers with specific CYP1A2 genotypes. This highlights genetic susceptibility to caffeine

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Area of Science:

  • Nephrology
  • Pharmacogenetics
  • Epidemiology

Background:

  • Caffeine metabolism varies due to cytochrome P450 1A2 (CYP1A2) genetic variations.
  • The impact of coffee intake on kidney disease risk, considering CYP1A2 genotype, is not well understood.

Purpose of the Study:

  • To investigate if CYP1A2 genotype modifies the association between coffee consumption and kidney dysfunction.
  • To explore the role of caffeine metabolism in coffee-related kidney disease risk.

Main Methods:

  • Prospective cohort study (Hypertension and Ambulatory Recording Venetia Study - HARVEST) with 1180 participants.
  • Analysis of coffee intake, CYP1A2 rs762551 genotype, albuminuria, and hyperfiltration over approximately 10 years.
  • Cox regression and survival analyses were used to assess risks.

Main Results:

  • No significant association between coffee intake and kidney dysfunction was found in the general population or fast caffeine metabolizers.
  • Individuals with slow caffeine metabolism (AC and CC genotypes at rs762551) who consumed >3 cups of coffee daily showed significantly increased risks of albuminuria, hyperfiltration, and hypertension.

Conclusions:

  • Coffee intake, particularly heavy consumption, poses an increased risk for kidney dysfunction in individuals with slow CYP1A2 caffeine metabolism.
  • Genetic variations in CYP1A2 may identify susceptible individuals for caffeine-related kidney disease.