{"count":2,"index":{"built_at":"2026-07-28T02:10:47.963845+00:00","public_records":55311,"revision":"b4e5bed1af9e4c3ba654d338"},"query":{"area":null,"kind":null,"lang":null,"limit":10,"match_mode":"all_terms","q":"Evidence check: CYP2C19 in the context of allergy"},"results":[{"answer":"CYP2C19 is a key drug-metabolizing enzyme, notably for omeprazole and clopidogrel. In the context of allergy, the evidence is weak and inconsistent. Some GWAS have reported modest associations between CYP2C19 variants (e.g., rs4244285, *2) and allergic conditions like asthma or atopic dermatitis, but effect sizes are small and findings are not replicated in larger cohorts. Most data come from population genetics, not clinical trials. Direct-to-consumer tests (e.g., MyBody-X) may list CYP2C19 under 'personalized medicine', but its relevance to allergy is limited. The primary role of CYP2C19 remains pharmacokinetic; altering allergy management based solely on a DTC genetic test is not supported. Evidence: human-moderate (GWAS, observational). Caveat: No RCTs for allergy outcomes. Safety note: Medication adjustments (e.g., PPIs) should be guided by a physician, not by DTC results alone.","area":"gesundheit","canonical_id":"gesundheit:canonical-0cb291b38f41fea708525aeb","id":"public-3b92229e582f1f8fd0516039","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: CYP2C19 in the context of allergy","score":23.73054122,"snippet":"CYP2C19 is a key drug-metabolizing enzyme, notably for omeprazole and clopidogrel. In the context of allergy, the evidence is weak and inconsistent. Some GWAS have reported modest associations between CYP2C19 variants (e.g., rs4244285, *2) and allergic conditions like asthma or atopic dermatitis, but effect sizes are small and findings are not replicated in larger cohorts. Most data come from population genetics, not clinical trials. Direct-to-consumer tests (e.g., MyBody-X) may list CYP2C19 under 'personalized medicine', but its relevance to allergy is limited. The primary role of CYP2C19 remains pharmacokinetic; altering allergy management based solely on a DTC genetic test is not supporte","sources":[],"title":"Evidence check: CYP2C19 in the context of allergy","url":"https://tikki.wiki/wissen/gesundheit/frage/public-3b92229e582f1f8fd0516039/evidence-check-cyp2c19-in-the-context-of-allergy/","verification":{"claim_support_verified":false,"human_reviewed":false,"quote_exact_match":false,"source_identity_verified":false,"tier":"existing_native_answer_privacy_screened_sources_pending"}},{"answer":"CYP2C19 is a gene encoding a cytochrome P450 enzyme primarily involved in drug metabolism, such as proton pump inhibitors, clopidogrel, and some antidepressants. In the context of allergies, the evidence is weak. Some studies suggest that CYP2C19 variants may influence the metabolism of certain antihistamines or corticosteroids, potentially affecting treatment response. However, these effects are modest and not clinically established. Consumer DNA tests that include CYP2C19 are not validated for allergy risk or management. Allergy diagnosis relies on IgE testing, skin prick tests, and clinical history, not genetic markers. Therefore, the evidence for CYP2C19 in allergy is mechanistic and speculative at best. Consulting an allergist remains the standard of care.","area":"gesundheit","canonical_id":"gesundheit:canonical-44e34486d571eef9d06be780","id":"public-75e55a915131a984643297c0","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: CYP2C19 in the context of Allergie","score":23.47722475,"snippet":"CYP2C19 is a gene encoding a cytochrome P450 enzyme primarily involved in drug metabolism, such as proton pump inhibitors, clopidogrel, and some antidepressants. In the context of allergies, the evidence is weak. Some studies suggest that CYP2C19 variants may influence the metabolism of certain antihistamines or corticosteroids, potentially affecting treatment response. However, these effects are modest and not clinically established. Consumer DNA tests that include CYP2C19 are not validated for allergy risk or management. Allergy diagnosis relies on IgE testing, skin prick tests, and clinical history, not genetic markers. Therefore, the evidence for CYP2C19 in allergy is mechanistic and spe","sources":[],"title":"Evidence check: CYP2C19 in the context of Allergie","url":"https://tikki.wiki/wissen/gesundheit/frage/public-75e55a915131a984643297c0/evidence-check-cyp2c19-in-the-context-of-allergie/","verification":{"claim_support_verified":false,"human_reviewed":false,"quote_exact_match":false,"source_identity_verified":false,"tier":"existing_native_answer_privacy_screened_sources_pending"}}],"schema_version":"tikki.search-response.v1"}