A breakthrough paleogenomic study published in Nature Ecology & Evolution has analyzed the genomes of skeletal remains dating back 12,000 years, discovered in the high-altitude rock shelters surrounding Lake Issyk-Kul in the Tian Shan mountains. The research team identified a localized pulse of genetic selection within the Major Histocompatibility Complex (MHC) region, suggesting a rapid evolutionary response to endemic viral pathogens specific to the high-altitude Kyrgyz plateau during the late Pleistocene-Holocene transition.
This study represents the earliest known evidence of genomic adaptation to viral threats in Central Asian hunter-gatherer populations. Researchers utilized high-coverage sequencing to differentiate these signals from later migrations, revealing a 'ghost' lineage that suggests the region served as a significant refugium where humans developed unique immune resilience long before the advent of sedentary agriculture.