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Immunoglobulin allotypes in Ecuadorian Cayapa Indians. Hum Genet 1994 May;93(5):517-9



Pubmed ID





Indigenous Indian groups comprise approximately 20% of Ecuador's population, the third largest percentage in all of Central or South America, yet immunogenetic data on these groups are lacking in the literature. In the course of population migration studies, sera collected from 65 Ecuadorians living in the northern province of Esmeraldas were typed for six GM and two KM markers. The study population consisted of 47 Cayapa Indians and 18 blacks of African origin, descendants of slaves imported into the area during the seventeenth century. The Cayapa demonstrated three GM phenotypes, two of which are common to other South American Indian tribes. The frequency of KM1 positive Cayapa Indians (63%) is similar to other South American Indian tribes, but is significantly greater than the Huaorani of eastern Ecuador (2%), the only other Ecuadorian Indian group for whom limited immunoglobulin allotype data are available (chi 2 = 35.8, P < 0.0001).

Author List

Kron MA, Gately L, Pandey JP, Jurado MH, Rumbea Guzman J


Michael Kron MD Director, Professor in the Medicine department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

African Continental Ancestry Group
Hemagglutination Inhibition Tests
Immunoglobulin Gm Allotypes
Immunoglobulin Km Allotypes
Indians, South American
jenkins-FCD Prod-482 91ad8a360b6da540234915ea01ff80e38bfdb40a