Genetic Testing and Screening in Primordial Prevention

Genetic Testing and Screening in Primordial Prevention

Primordial prevention is the earliest and most upstream level of disease prevention — targeting the conditions and risk factors that give rise to disease in the first place, before any risk factors have even developed. Genetic testing and screening play a powerful role in primordial prevention by identifying individuals with elevated genetic risk before any clinical signs or symptoms appear.

The Three Levels of Prevention

• Primordial prevention — preventing the development of risk factors in the first place (e.g. identifying genetic predisposition to obesity and intervening with diet and lifestyle before weight gain occurs)

• Primary prevention — preventing disease in people who have risk factors but no disease (e.g. statin therapy for people with high genetic cardiovascular risk)

• Secondary prevention — early detection and treatment of disease before it causes significant harm (e.g. cancer screening in high-risk individuals)

How Genetic Testing Enables Primordial Prevention

• Polygenic risk scores (PRS) — aggregate the effects of hundreds of genetic variants to estimate an individual’s overall genetic risk for conditions like cardiovascular disease, type 2 diabetes, and breast cancer

• Monogenic risk identification — identifying high-penetrance mutations (e.g. BRCA1/2 for breast cancer, LDLR for familial hypercholesterolaemia) that confer very high disease risk

• Carrier screening — identifying carriers of recessive conditions (e.g. thalassaemia, SMA, cystic fibrosis) before pregnancy, enabling informed reproductive decisions

• Pharmacogenomic screening — identifying genetic variants that affect drug metabolism, enabling safer and more effective prescribing from the outset

The MapmyGenome Approach to Primordial Prevention

Genomepatri by MapmyGenome is designed for primordial prevention — providing a comprehensive genetic health profile that identifies predispositions to 100+ conditions before symptoms develop, enabling targeted lifestyle, dietary, and medical interventions that can prevent or delay disease onset.