According to a genetic study in China by Shou et al., J2-M172 is found with high frequency among Uygurs (17/50 = 34%) and Uzbeks (7/23 = 30.4%), moderate frequency among Pamiris (5/31 = 16.1%), and low frequency among Yugurs (2/32 = 6.3%) and Monguors (1/50 = 2.0%). The authors also found J-M304(xJ2-M172) with low frequency among the Russians (1/19 = 5.3%), Uzbeks (1/23 = 4.3%), Sibe people (1/32 = 3.1%), Dongxiangs (1/35 = 2.9%), and Kazakhs (1/41 = 2.4%) in Northwest China.