In this paper "Evidence that a West-East admixed populationlived in the Tarim Basin as early as the earlyBronze Age" (2010), you can read :
Y chromosome haplogroup profiling and distributionFifteen individuals’ AMG amplicons were obtained fromthe 20 Xiaohe individuals (whose mtDNA was successfully amplified), among which seven individuals wereidentified as male and eight as female. The Y chromosome haplogroup of the seven males were all assignedto haplogroup R1a1a through screening the Y-SNPs atM89, M9, M45, M173 and M198 successively. Haplogroup R1a1a is widely distributed in Eurasia: it ismainly found in Eastern Europe, Central Asia, SouthAsia, Siberia, ancient Siberia, but rare in East Asia[22-24]"
And:
"Besides the East Eurasian lineage, two West EurasianmtDNA haplogroups H and K were found among theXiaohe people. H lineage is the most common mtDNAhaplogroup in West Eurasia [20], but haplogroup Hwith a 16260T was shared by only nine modern peoplein Genbank, including one Italian, one German, oneHungarian, one Portuguese, one Icelander and four English people. Haplogroup K, a western Eurasian-specifichaplogroup, is mainly distributed in Europe, centralAsia, and Iran [20,21]. However, haplogroup K with16134T, found in the Xiaohe people, has not beenfound in modern people to our knowledge.Among the Xiaohe people, three sequences with theunique HVRI motif 16189-16192-16311 formed a subcluster (Figure 2) and were not shared by modern people. They are identified as macrohaplogroup R throughsequencing the PCR amplicons at np10400 andnp12705 in the coding region. The np12308, np14766,np10031, np4917, np3970, and 9 bp deletion, whichare the diagnostic sites for the main subhaplogroups ofR, were further examined [15]. The results showedthat they are related neither to the West Eurasianhaplogroups UK, TJ, HV, R11 and R1, nor to the EastEurasian haplogroups B and F. So we designatedthem as haplogroup R* temporarily. Another sequencewith motif 16223-16304, shared by some people fromEast Asia, India, and Europe, was assigned tohaplogroup M*."
and conclusions:
"ConclusionsOur results demonstrated that the Xiaohe people wasan admixture from populations originating from boththe West and the East, implying that the Tarim Basinhad been occupied by an admixed population since theearly Bronze Age. Considering the unique genetic haplotypes and particular archaeological culture, theadmixed population might have had relationship withpopulations settled South Siberia during the BronzeAge. To our knowledge, this is the earliest genetic evidence of an admixed population settled in the TarimBasin"
