Crimean Karaites
Leon Kull and Kevin Alan Brook led the first scientific study of Crimean Karaites using genetic testing of both Y chromosomal and mitochondrial DNA and their results claimed to showed that, the Crimean Karaites are indeed partially of Middle Eastern origin and closely related to other Jewish communities (Ashkenazi, Sephardi and Mizrahi Jews), while finding that the Crimean Karaites are genetically unrelated to non-Jewish Turkic-speaking peoples of the region.