Among the Nepalese population, haplogroup D is the most dominant maternal lineage in Tamang (26.1%) and Magar (24.3%).

D2, which occurs with high frequency in some arctic and subarctic populations (especially Aleuts), is a subclade of D4e1 parallel to D4e1a and D4e1c, so it properly should be termed D4e1b.

D4 (3010, 8414, 14668): The subclade D4 is the most frequently occurring mtDNA haplogroup among modern populations of northern East Asia, such as Japanese,[7][8][9][10] Okinawans,[8] Koreans,[8][11] northern Han Chinese (e.g. from Lanzhou[12]), and some Mongolic- or Tungusic-speaking populations of the Hulunbuir region, such as Barghuts in Hulun Buir Aimak,[13] Mongols and Evenks in New Barag Left Banner,[14] and Oroqens in Oroqen Autonomous Banner.

[16] It also predominates among published samples of Paleo-Indians and individuals whose remains have been recovered from Chertovy Vorota Cave.

[64][65][66] It does not appear to have participated in the migration to the Americas, and frequencies in Central, North, and South Asia are generally lower, although the D5a2a2 subclade is prevalent (57/423 = 13.48%[52]) among the Yakuts, a Turkic-speaking group that migrated to Siberia in historical times under the pressure of the Mongol expansion.