New paleogenomic research on early Holocene remains discovered in the Sumatran lowlands has identified a previously unknown genetic signature linked to resistance against endemic tropical fungal pathogens. The study, conducted by the Anthropological Research Institute, suggests that early hunter-gatherer populations in the region underwent an intense period of natural selection shortly after the last glacial maximum as the environment shifted toward high-humidity rainforests.
The identified genetic markers are associated with enhanced epithelial barrier function and specific T-cell responses to mycotoxins. These findings provide critical evidence of how ancient DNA can map the history of human immunity in response to specific ecological transformations. The study further clarifies the migration routes of early Southeast Asian lineages, showing that environmental health adaptations were a primary driver of population stability in the tropics.