Study Finds 3,127 Active Denisovan Variants Shaping Oceanian Immune Systems

2 articles · Updated · Livescience.com · Jun 18

Researchers identified 3,127 Denisovan-inherited variants still active in modern Oceanians, with experiments showing some switch immune-system genes on or off.
Genome sequencing of 177 Oceanians from 12 populations, compared with 1,284 global genomes plus Denisovan and Neanderthal references, produced the largest Denisovan DNA map yet.
The catalog contains three times more Denisovan-inherited sequences than previously known, and more than 70% of them are unique to Oceanians.
Some variants appear to have been favored by natural selection in Near Oceania, affecting genes tied to immunity as well as bone development, metabolism and fertility.
The findings suggest Denisovan DNA helped early migrants adapt to new Pacific pathogens at least 42,000 years ago and underscore how underrepresented Oceanian genomes remain in research.

Sources

Livescience.com18h ago

New Study Reveals Active Denisovan DNA Influences Immune Systems in Modern Oceanians

Yahoo! Voices18h ago

Denisovan DNA influences the immune systems of modern Oceanians — but researchers aren't sure why

Could DNA from an extinct human species hold the key to fighting modern diseases?

Beyond immunity, what hidden biological functions did we inherit from extinct human relatives?

Landmark Discovery: Near Oceania Populations Hold World’s Highest Denisovan DNA—Implications for Evolution, Immunity, and Global Health Equity

Overview

A groundbreaking study published in Science in June 2026, led by Yale University, sequenced 177 genomes from 12 Oceanian populations to explore the genetic history of the Pacific’s earliest inhabitants. The research revealed that people in Near Oceania have the highest known levels of Denisovan DNA in the world, highlighting a unique and profound genetic legacy. This discovery shows that the ancestors of these populations interbred with at least three distinct Denisovan-related groups, offering new insights into human evolution and adaptation. The findings set a foundation for understanding how ancient DNA continues to shape modern populations.

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