The Lipka Tatars, descendants of Tatars who gradually migrated from Golden Horde to Belarus, Lithuania and Poland in 14th century (1300-1400 AD), for almost 500-600 years, most of them still retain Islamic faith, and a very small number of them can speak Tatar language. The number of these people varies. It is generally accepted that they are about 300,000, and some believe that their actual number exceeds 1 million.
The 2016 article "East Eurasian origin in center of Europe: genetic traces of steppe nomads in genomes of Belarusian Lipka Tatars" Likap Tatars" presents DNA of this group.
In this article, it is believed that about 30% of Likap Tatars are descended from indigenous Turkic peoples.
The proportion of putative East Eurasian component that likely includes this "Turkic-specific" genetic trace in BLT genomes is significantly higher (~30%) compared to many Turkic-speaking populations in West Eurasia, such as Gagauz, Turks , Iranian Azerbaijanis, Balkars, Kumyks and Turkmens, and is as high as that of Volga Tatars according to data. (This East Asian component, which is presumably "Turkic-specific", is found in genomes of Likapu-Tatars in Belarus, Bigagoz, Turks, Iranian Azerbaijanis, Balkars, Kumyks and Turkmens among Turkic-speaking peoples of western Eurasia, this proportion is much higher (about 30%), which is not inferior to that of Volga Tatars).
Because these Tatars are descended from today's Volga Tatars, it can be said that after more than 600 years of development, Likapu Tatars did not mix with surrounding Slavs at all and retained most of their original components. Turkic-speaking ethnic groups in Western Asia, such as Turkey and Azerbaijan, are more like primitive Turks. (Note: Turkish Turk is only East Asian group with a bright olive and reddish brown color among European group, but their proportion is relatively small)
According to PPSh map, Likapu-Tatars clearly deviate from modern European population, and deviate from Central Asian population. Of course, there is also a certain distance from Kazakhs, Uighurs, Uzbeks, Hazaras and other ethnic groups in East, and they are in middle lane.
Second, Y chromosome and mitochondrial DNA
The Likape Tatars, compared to surrounding Belarusians, have a particularly high ratio of J2 and Q. These components may have been higher than modern Slavs since ancient Turks, and others such as N-Tat and I2a -P37 .2, are far below share of Slavs. One of these two types comes from Finnish-Uralic language family, and other from ancient southeastern Europe. These two types are absent from Likapu-Tatars.
In maternal lineage, Likapu-Tatars have a certain proportion of oriental mtDNA maternal components, such as D and C.