Abstract
The validity of the reported association between GcAb and kuru is analyzed. Phenotypes with one or more GcAb genes have an increased incidence of the disease at the expense of Gc 1-1 and Gc 2-2. Incidence ratios of kuru associated with various phenotypes examined over the linguistic groups studied indicate that only Gc Ab-Ab persons have a significantly greater chance of dying of kuru. The association X2 for the incidence ratio for those phenotypes possessing only one GcAb gene is significant, but there is significant heterogeneity between groups studied. Those of the Gc Ab-Ab phenotype are six times as likely to contract kuru as the baseline group. Criticisms of this analysis include difficulties defining an adequate control group in such heterogeneous populations, errors in determination of Gc phenotypes, inclusion of persons incubating kuru in the control groups, and questions of validity of statistical tests in isolated inbred populations.
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Selected References
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