The Hmong diaspora: Preserved South-East Asian genetic ancestry in French Guianese Asians
Brucato, N., Mazières, S., Guitard, E., Giscard, P.-H., Bois, É., Larrouy, G., & Dugoujon, J.-M.
The Hmong diaspora: Preserved South-East Asian genetic ancestry in French Guianese Asians. Comptes Rendus Biologies, 335
, 698-707. doi:10.1016/j.crvi.2012.10.003.
The Hmong Diaspora is one of the widest modern human migrations. Mainly localised in South-East Asia, the United States of America, and metropolitan France, a small community has also settled the Amazonian forest of French Guiana. We have biologically analysed 62 individuals of this unique Guianese population through three complementary genetic markers: mitochondrial DNA (HVS-I/II and coding region SNPs), Y-chromosome (SNPs and STRs), and the Gm allotypic system. All genetic systems showed a high conservation of the Asian gene pool (Asian ancestry: mtDNA = 100.0%; NRY = 99.1%; Gm = 96.6%), without a trace of founder effect. When compared across various Asian populations, the highest correlations were observed with Hmong-Mien groups still living in South-East Asia (Fst < 0.05; P-value < 0.05). Despite a long history punctuated by exodus, the French Guianese Hmong have maintained their original genetic diversity.