Pharmacogenetics and Pharmacogenomics: Overview

Pharmacogenetics and pharmacogenomics are fields that explore how our genetic makeup affects our response to drugs.

Pharmacogenetics examines how variations in a single gene can influence drug effects. But pharmacogenomics studies the broader genetic landscape. It assesses how genetic variants influence drug responses compared to the reference gene profiles.

Drug responses vary due to both genetic and environmental factors.

Genetic differences can affect drug metabolism, protein function, and interactions with drug targets like enzymes and receptors. This genetic variability explains why some people experience a drug’s positive effects while others find it ineffective or experience adverse reactions.

Drug metabolism is known to be highly heritable. Studies show that up to 75% of the variability in drug processing can be linked to genetic differences in cytochrome P450 enzymes.

With technological advances, such as genome-wide screening and DNA chips, scientists can now pinpoint key genetic markers that influence drug responses.

This knowledge helps develop personalized treatments, reduce side effects, and improve therapeutic outcomes.