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Pharmacogenomics in Sri Lanka: a comprehensive systematic review of the research landscape and clinical implications
Priyanga Ranasinghe1,2, Hajanthy Jeyapragasam1, Sandamini Liyanage1
1Department of Pharmacology, Faculty of Medicine, University of Colombo, Sri Lanka.
Abstract:
Aim: Pharmacogenomics is emerging in South Asia, including Sri Lanka, with potential to optimize drug therapy and reduce adverse effects. This review evaluates the state of pharmacogenomics research in Sri Lanka, emphasizing population-specific factors to guide future advancements.Materials & methods: A literature search was performed across PubMed/Web-of-Science/SciVerse-Scopus/Embase, and Sri Lanka Journals Online, along with searches for relevant theses in local health repositories/university databases. Studies were categorized into clinical correlational, descriptive or novel assay development studies.Results: Eleven published articles and eight theses were included. One study examined somatic variants (KRAS gene), while all others focused on germline variants. There were two clinical correlational studies: tamoxifen adverse effects and CYP2D6 variants and FTO gene rs9939609 variants and weight gain caused by second-generation antipsychotics. Eight descriptive studies evaluated prevalence of CYP2D6 variants, HLA-B*15:02 allele, KRAS gene mutations and variants related to statin, warfarin and anticancer drug metabolism. Additionally, nine studies developed, validated and tested novel assays for detecting key pharmacogenomically important variants.Conclusion: While pharmacogenomics research in Sri Lanka has made strides, more clinical studies and broader genomic research are needed. Overcoming challenges related to funding, public awareness and regional collaboration is essential to advance personalized medicine and improve therapeutic outcomes in Sri Lanka and South Asia.
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