Lol that you cropped out the rest of that sentence:
> This has indeed been attempted, with the MSY results interpreted plausibly to suggest an overwhelming majority of Near Eastern ancestry on the Ashkenazi male line of descent11,18,19,20,21, albeit with much higher levels (>50%) of European (potentially east European) lineages in Ashkenazi Levites22, suggesting a possible Khazar source in that particular case.
> This has indeed been attempted, with the MSY results interpreted plausibly to suggest an overwhelming majority of Near Eastern ancestry on the Ashkenazi male line of descent11,18,19,20,21, albeit with much higher levels (>50%) of European (potentially east European) lineages in Ashkenazi Levites22, suggesting a possible Khazar source in that particular case.