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Anatomical Therapeutic Chemical Code (ATC)

Definition
AI-generated

The ATC classification assigns hierarchical codes to medicines by organ system (anatomical main group), therapeutic and pharmacological subgroup, and chemical substance.

Topics
Cohorts and databases
Related
Case-Control Study Cohort International Classification of Diseases Code (ICD)

Why it matters in GWAS

Pharmacogenomic and drug-response GWAS, PheWAS on medication use, and Mendelian randomization with drug proxies often aggregate exposures by ATC level; consistent coding matters for replication across countries and formularies.

Example usage

"We grouped statin prescriptions by ATC C10AA regardless of brand before testing genetic associations with adherence."

Case-Control Study Cohort International Classification of Diseases Code (ICD) Phenome-Wide Association Study (PheWAS) Phenotype
Related-term network

Click any node to open that term page.

Node order. The current term is first. Next come every page linked from Related terms, in the same top-to-bottom order as that list. Then new terms appear in two-hop layers: for each of those direct neighbors (in that same order), their related terms are appended if not already listed. A third pass does the same for two-hop nodes. The walk stops when a fixed maximum number of nodes is reached.

References

  • WHO Collaborating Centre for Drug Statistics Methodology. ATC/DDD Index. https://www.whocc.no/atc_ddd_index/
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Last updated (UTC · Git history)