Pharmacogenomics and CRISPR-based therapies.

Pharmacogenomics and CRISPR-based treatments are two areas of precision medicine that are advancing together. Pharmacogenomics involves studying how differences in someone's genes can change the effect of medications on them. Pharmacogenomics helps reduce adverse reactions to drugs and improve healing by choosing and measuring drugs according to a patient's genetic information. Additionally, CRISPR-Cas systems now serve as leading genome editing tools that allow precise alterations at given points of the genome. CRISPR technology's use in pharmacogenomics creates new opportunities for modifying gene expression, fixing harmful mutations, and creating innovative treatment approaches. A more proactive approach to illness treatment is supported by this synergy, in which genetic factors serve as both direct targets for intervention and a basis for medication selection. This chapter examines the theoretical and practical frameworks that link CRISPR-based treatments with pharmacogenomics, emphasizing recent uses in pharmacoresistance, cancer, and monogenic diseases. To guarantee safe and fair deployment, it also covers the ethical, legal, and technical issues that need to be resolved. When combined, these technologies hold the potential to revolutionize medicine by facilitating individualized and curative drugs.