# Pharmacogenetic Testing of Patients With Unwanted Adverse Drug Reactions or Therapy Failure

> **NCT04154553** · — · RECRUITING · sponsor: **University Hospital, Basel, Switzerland** · enrollment: 400 (estimated)

## Conditions studied

- Adverse Drug Reaction
- Therapy Failure

## Interventions

- **DIAGNOSTIC_TEST:** Buccal swab
- **DIAGNOSTIC_TEST:** EDTA Blood sample (4.9mL)
- **DIAGNOSTIC_TEST:** Serum sample (7.5mL)
- **OTHER:** communication of test results
- **OTHER:** unstructured interview

## Key facts

- **NCT ID:** NCT04154553
- **Lead sponsor:** University Hospital, Basel, Switzerland
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** RECRUITING
- **Start date:** 2019-10-15
- **Primary completion:** 2026-08
- **Final completion:** 2026-08
- **Target enrollment:** 400 (ESTIMATED)
- **Last updated:** 2025-05-14

## Collaborators

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## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04154553

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04154553, "Pharmacogenetic Testing of Patients With Unwanted Adverse Drug Reactions or Therapy Failure". Retrieved via AI Analytics 2026-06-04 from https://api.ai-analytics.org/clinical/NCT04154553. Licensed CC0.

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