According to Brien Foerster of Hidden Inca Tours, yes there has recently been DNA testing done on some Peruvian elongated skulls.
The skulls tested positive for haplogroups common to the Andes mountains area and the Caucasus mountains region, with additional DNA not common to any known homo sapiens haplogroup.
I do not know the percentages involved with those test results, but a quick search will probably answer that question.
Thanks for the update. So with the Caucasus signature as well as the unknowns..ther might be some of that good ol Denisovian runnning around the brain there.