Chaubey et al. 2015 detected a distinctive East Asian ancestral component, mainly restricted to specific populations in the foothills of Himalaya and northeastern part of India. Highest frequency of the component is observed among the Tibeto-Burmese speaking groups of northeast India and was also detected in Andamanese populations at 32%, with substantial presence also among Austroasiatic speakers. It is found to be largely absent in Indo-European and Dravidian speakers, except in some specific ethnic groups living in the Himalayan foothills and central-south India.</ref> The researchers however suggested that the East Asian ancestry (represented by the Han) measured in the studied Andamanese groups may actually reflect the capture of the affinity of the Andamanese with Melanesians and Malaysian Negritos (rather than true East Asian admixture), as a previous study by Chaubey et al. suggested "a deep common ancestry" between Andamanese, Melanesians and other Negrito groups, and an affinity between Southeast Asian Negritos and Melanesians (as well as the Andamanese) with East Asians.