 It has been found only at low frequencies in samples from Sardinia and Lebanon.The other primary branch of R1b1 is R-PH155 (R1b1b), which is extremely rare and defined by the presence of PH155.Living males carrying subclades of R-PH155 have been found in Bahrain, Bhutan, Ladakh, Tajikistan, Turkey, Xinjiang, and Yunnan.