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Analytical validation of a laboratory-development multigene pharmacogenetic assay
Rocío Rosas-Alonso1,2, Javier Queiruga3, Pedro Arias1
1Pharmacogenetic Laboratory, Genetics Department, Hospital Universitario La Paz.
Pharmacogenetics and Genomics
|June 11, 2021
Summary
This study validated an in-house pharmacogenetic PCR assay for clinical use. The assay demonstrated high accuracy for most genes, ensuring reliable pharmacogenetics (PGx) testing for personalized medicine.
Area of Science:
- Clinical Laboratory Science
- Pharmacogenetics
- Molecular Diagnostics
Background:
- Pharmacogenetics (PGx) implementation is key for personalized medicine.
- Clinical laboratories require validated assays for PGx testing.
- Assay validation ensures suitability for patient studies.
Purpose of the Study:
- To design and validate an in-house pharmacogenetic PCR-based method.
- To confirm the assay's adequacy for clinical PGx studies.
Main Methods:
- Development of a validation process for a PCR-based pharmacogenetic assay.
- Evaluation of concordance, repeatability, and reproducibility.
- Assessment of sensitivity and specificity for variant detection.
Main Results:
- Achieved 100% concordance, repeatability, and reproducibility.
- Demonstrated 100% sensitivity and specificity for CYP2C9, CYP3A5, TPMT, DPYD, and UGT1A1 variants.
- Identified a limitation in CYP2C19 variant detection (*2/*10 diplotype).
Conclusions:
- Assay precision is crucial for implementing clinical pharmacogenetics.
- Acknowledging assay limitations is essential for quality PGx testing.
- Objective evidence confirmed the fulfillment of requirements for the developed laboratory assay.
