Genetics of propionic acidemia in a Mennonite-Amish kindred

J. R. Kidd, B. Wolf, Y. E. Hsia, K. K. Kidd

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19 Scopus citations


A large Mennonite kindred was found to have propionic acidemia (complementation group pcc C) in at least four different sibships. Even within this kindred and this complementation group (where etiology may be assumed to be identical), there is a wide range of symptoms exhibited by homozygous pcc C-deficient individuals. The inbreeding coefficients (f) for the affected sibships ranged from 4.776 X 10-3 to 2.003 X 10-2. Data from this study strongly support the single-locus autosomal recessive mode of inheritance. Three couples were found to be common in the ancestry (9-11 generations ago) of all eight parents of the four affected sibships. Relative likelihoods for a member of each of those couples to have been the early carrier of the defective allele were calculated at 1539, 278, and 1. Thus, one couple was designated the most likely earliest-known transmitter of the pcc-deficient allele.

Original languageEnglish (US)
Pages (from-to)236-245
Number of pages10
JournalAmerican journal of human genetics
Issue number2
StatePublished - 1980

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)


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