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Data from 302 individuals belonging to three populations of French Guiana Indians are reported. All the phenotypes except two can be explained by three haplotypes: Gm1,21, Gm1,2,21 and Gm1,10,11,25. The gene frequencies found in the present study are generally in accordance with those previously described among other South American Indians. For the Inv1,2 gene a high value has been found for the Wayanas and the Oyampis, but a difference appears for the Emerillons who possess a low frequency.

The distribution of the G1m (1,2,3,17), G2m(23), G3m(5,10,11,13,14,15,21,28) and Km (1,2) allotypic markers has been examined in 122 unrelated Vietnamese subjects originating from all regions of Vietnam. The 13 observed phenotypes have been explained by means of 8 haplotypes: 5 'major' ones (which are also known to be usual in all other reported Mongoloid populations) and 3 'minor' ones. Consideration of gene frequencies allows easy integration of Vietnamese within the south-north cline of Gm haplotype distribution in East Asia, where they insert between Southern Chinese, on one hand, and Singapore as well as South Central Chinese on the other hand. The observed Km10.290 frequency value revealed to be of the same order of magnitude as the values reported for most other non-Thai Mongoloids.

Serum samples from Sinhalese subjects, from Punjab and from Singapore have been studied. The Gm phenotypes found are very numerous and we can observe some similarities concerning the Gm gene frequencies between the Singapore Indians with the Indians of North India, and with the Sinhalese. In contrast, Gm gene frequencies found among Chinese and Malays from Singapore are quite different from those found among Indians of Singapore. Our results here are very similar to those obtained in Malaya studies.

Serum samples from 226 Gypsies were tested for Gm(1,2,4,5,8,10,11,14,17, 21,23,25) and for Inv(1,2). The Gm phenotypes found are very numerous and the more frequent among this population are: Gm(4,5,8,10,11,14,23,25); Gm(1,4,5,8,10,11,14,23, 25), Gm(1,4,5,8,10,11,14,17,21,23,25), Gm(1,4,5,8,10,11,14,17,23,25) and Gm(1,2,4, 5,8,10,11,14,17,21,23,25). All the phenotypes except three can be explained by nine haplotypes: Gm4,5,8,10,11,14, 23,25, Gm4,5,8,10,11,14,23,25, Gm4,5,8,10,11,14,25, Gm1,17, 21, Gm1,10,11,17,25, Gm1,2,17,21, Gm1,8,17,21, Gm1,8,17,21,23 and Gm1,5,10,11,14,17. Thehaplotypes Gm1,7,21, Gm1,2,17,21, Gm4,5,8,10,11,14,25 (with or without Gm[23]) are all three common among Caucasoids, Gm1,10,11,17,25, Gm1,4,5,10,11,14,23,25 (common among Mongoloids) and Gw1,5,10,11,14,17 (common to Negroids). For the Inv system, this population possesses a very low frequency of Inv(1) and Inv(2).