 The same clade previously has been labeled as O-MSY2.2.The Haplogroup O-M119 branch is believed to have evolved during the Late Pleistocene (Upper Paleolithic) in China mainland.A 2010 study by Karafet suggests haplogroup O-M119 was part of a four-phase colonization model in which Paleolithic migrations of hunter-gatherers shaped the primary structure of current Y-Chromosome diversity of Maritime Southeast Asia.