This subclade is downstream from O-PK4. It reaches high frequencies among the populations of the islands of Sumatra, Java, Bali, and Borneo in western Indonesia (Karafet 2010). It has been found to be by far the most common Y-chromosome haplogroup among the Balinese, occurring in approximately 58.6% (323/551) of a sample of Balinese men. It has been found in 17.1% (6/35) of a sample of Malagasy in Madagascar (Hurles 2005) and in 1.7% (1/60) of a sample of Swahili people in Kilifi, Kenya. It is one of the most frequently occurring Y-DNA haplogroups among men in Malaysia, Thailand, Laos, Cambodia, Vietnam, and Myanmar. It is also very common among minority ethnic groups in India and China, especially those who have ethnolinguistic connections with populations in Southeast Asia ("e.g." Munda peoples, Khasi people, and Nicobarese people in India and Kra-Dai peoples, Blang people, and Mang people in China).