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Am J Psychiatry. 1985 Feb;142(2):187-92.

Evidence for autosomal recessive inheritance in 46 families with multiple incidences of autism.

Abstract

The authors ascertained 46 families with multiple incidences of autism (41 with two and five with three autistic probands). Classical segregation analyses revealed a maximum likelihood estimate of the segregation ratio of p = 0.19 +/- 0.07. This is not significantly less than 0.25, the expected value for autosomal recessive inheritance. However, it is significantly less than 0.50, the expected value for autosomal dominant inheritance. The polygenic threshold model was tested and rejected over a full range of values of heritability and ascertainment probability for these families. These results are most consistent with the hypothesis of autosomal recessive inheritance in this subset of 46 families with multiple incidences of autism.

PMID:
4038589
DOI:
10.1176/ajp.142.2.187
[Indexed for MEDLINE]
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