The authors also have found Haplogroup Y1a in 13.3% (2/15) of Berezovka Evens, 12.5% (3/24) of Taimyr Evenks, 6.5% (2/31) of Udegeys, 2.6% (1/39) of Kamchatka Evens, and 2.3% (2/88) of Central Yakuts, and they have noted that other studies have reported finding this haplogroup in high frequency in the Ulchi and Negidal, in 9%-10% of Koryaks and eastern Evenks, as well as in low frequency in Central and Vilyuy Yakuts.