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Discover the groundbreaking genetic study analyzing over 2,700 Indian genomes, revealing complex ancestry and crucial links to disease. This research, published in Cell, unveils how a single human migration from Africa shaped the modern Indian gene pool. Explore the role of ancient groups and the impact of endogamy on genetic isolation and increased disease risks within specific communities; a mutation in the BCHE gene is a stark example. The study highlights the genetic studyS role in identifying rare, community-specific variants tied to various health issues. This knowledge will hopefully improve screening and treatment strategies,playing a pivotal role in shaping public health in the country. Dive into News Directory 3 for up-to-the-minute updates on the Indian Genome project and its far-reaching implications. Discover what’s next …
Indian Genome Study Reveals Complex Ancestry, Disease Links
Updated June 27, 2025
A sweeping genomic study offers the most detailed look yet at india’s genetic diversity. The analysis of 2,762 genomes from across the country sheds light on complex ancestry patterns and previously unknown links to disease. The research encompasses a wide array of ethnic, linguistic, and regional groups.
Scientists from UC Berkeley,AIIMS New Delhi,USC,and the University of Michigan conducted the research,published June 26 in Cell. The project is part of the Longitudinal Aging Study in India-Diagnostic Assessment of Dementia (LASI-DAD).
The study found that most genetic variation in India stems from a single human migration from Africa roughly 50,000 years ago. These early populations interbred with Neanderthals and Denisovans before spreading across Asia. Indian genomes contain a wider variety of Neanderthal DNA than any other population studied, allowing reconstruction of about 50% of the Neanderthal genome and 20% of the Denisovan genome.
researchers confirmed that genetic mixing in India involved three ancient groups: local hunter-gatherers, Neolithic farmers from Central Asia, and steppe pastoralists. This combination shaped the modern Indian gene pool and the role of each group in shaping the Indian genomes.
However, about 3,500 years ago, many Indian groups became more genetically isolated due to endogamy, or marriage within specific communities. This isolation led to population bottlenecks, increasing the presence of harmful genetic variants in some groups. A mutation in the BCHE gene, which causes severe reactions to certain anesthetics, is common in the Vysya community but rare elsewhere.
The genetic study also identified rare, community-specific genetic variants linked to diseases such as blood disorders, hearing loss, cystic fibrosis, and phenylketonuria. These findings may improve future screening and treatment strategies in India, playing a crucial role in public health.
what’s next
Further analysis of the LASI-DAD genomes is underway to investigate aging, disease risk, and population-specific health trends. The study fills a major gap in global genetics, where Indian populations have been underrepresented.