Cited by 117Cannabis and Cannabinoid ResearchGenetic Associations and EpidemiologyPharmacogenetics and Drug Metabolism

The fatty acid amide hydrolase C385A (P129T) missense variant in cannabis users: studies of drug use and dependence in Caucasians.

Tyndale, Rachel F., Payne, Jennifer I., Gerber, Alexandra L., Sipe, Jack C.·2007·American Journal of Medical Genetics Part B Neuropsychiatric Genetics

Abstract

A genetic variation in fatty acid amide hydrolase (FAAH), C385A (P129T), has been previously associated with risk for problem street drug use. FAAH is a mammalian enzyme that inactivates neuromodulatory-signaling lipids including the endogenous cannabinoid 1 receptor agonist anandamide. We investigated in adult Caucasians (N = 749) whether this FAAH variant altered the risk for trying, regular use of or dependence on cannabis, alcohol or nicotine, traditional "gateway" drugs. Consistent with our knowledge that the A/A genotype results in reduced FAAH expression and activity in humans, subjects with the A/A genotype were less likely to be THC dependent than subjects with either a C/C or C/A genotype (11% vs. 26%, P < 0.05). No association was observed between the A/A genotype and risk for alcohol or tobacco regular use, or DSM IV dependence. Controlling for regular use of nicotine and sedatives, both identified as confounders, those with the A/A genotype were at significantly reduced risk for being THC dependent (OR 0.25, 95% CI: 0.07-0.88) as compared with those with the C/A or C/C genotype, supporting a link between alterations in the endocannabinoid system and THC dependence. Unexpectedly, we found an increased risk for regular use of sedatives among the A/A genotype group. The relationship between the FAAH A/A genotype and risk for drug dependence in this study was drug class specific, suggesting it is not part of a more general drug abuse effect. These results, particularly the observation of altered risk for sedative drug use, should be investigated further in multiple ethnic populations.

Integrity signals

Registry

Crossref · 10.1002/ajmg.b.30491

Cites

34 of 34 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

1 of the 35 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Tyndale, R. F., Payne, J. I., Gerber, A. L., & Sipe, J. C.
Affiliations
  • Centre for Addiction and Mental Health (CA)
  • Dalhousie University (CA)
  • Scripps Research Institute (US)
Corresponding author
Tyndale, Rachel F.
Venue
American Journal of Medical Genetics Part B Neuropsychiatric Genetics
Publisher
Wiley
Published
2007-02-08
Volume
144B
Issue
5
Pages
660-666
ISSN
  • 1552-4841 (ISSN-L)
  • 1552-485X
OpenAlex
W2141724621
Cited by
117
References
35
Citations by year
2026: 4 · 2025: 4 · 2024: 11 · 2023: 8 · 2022: 10 · 2021: 3 · 2020: 5 · 2019: 11 · 2018: 5 · 2017: 5 · 2016: 5 · 2015: 8 · 2014: 8 · 2013: 7 · 2012: 4
FWCI
3.12
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Medical Genetics Part B Neuropsychiatric Genetics (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Centre for Addiction and Mental Health
  • Canada Research Chairs
  • National Institutes of Health (5r01da015749-03)
  • Canadian Institutes of Health Research
  • National Institute on Drug Abuse (DA015749)
Topics
  • Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmacology › Pharmacogenetics and Drug Metabolism
Keywords
fatty acid amide hydrolase, cannabis use disorder, endocannabinoid system, anandamide, sedative use, alcohol consumption, nicotine use, gateway drugs, genetic risk, Caucasians
MeSH terms
Fatty Acid Amide Hydrolases, Adult, Alcohol Drinking, Amidohydrolases, Canada, Cannabinoids, Female, Genotype, Humans, Male, Marijuana Smoking, Smoking, Logistic Models, Substance-Related Disorders, Genetic Predisposition to Disease, Mutation, Missense

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review