Unveiling the origins and genetic makeup of the “forgotten people”: A study of the Sarmatian-period population in the Carpathian Basin

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Abstract: The nomadic Sarmatians dominated the Pontic Steppe from the 3rd century BCE and the Great Hungarian Plain from 50 CE until the Huns’ 4th-century expansion. In this study, we present a large-scale genetic analysis of 156 genomes from 1st- to 5th-century Hungary and the Carpathian foothills. Our findings reveal minor East Asian ancestry in the Carpathian Basin (CB) Sarmatians, distinguishing them from other regional populations. Using F4 statistics, qpAdm, and identity-by-descent (IBD) analysis, we show that CB Sarmatians descended from Steppe Sarmatians originating in the Ural and Kazakhstan regions, with Romanian Sarmatians serving as a possible genetic bridge between the two groups. We also identify two previously unknown migration waves during the Sarmatian era and a notable continuity of the Sarmatian population into the Hunnic period despite a smaller influx of Asian-origin individuals. These results shed new light on Sarmatian migrations and the genetic history of a key population neighboring the Roman Empire.