Segregation analysis of physician-diagnosed asthma in Hispanic and non- Hispanic white families: A recessive component?

Catharine J. Holberg, Robert C. Elston, Marilyn Halonen, Anne L. Wright, Lynn M. Taussig, Wayne J. Morgan, Fernando D. Martinez

Research output: Research - peer-reviewArticle

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Abstract

The inheritance of asthma, evident from its high family concordance, is not well understood. To investigate whether asthma may be inherited through a major gene with two alleles, segregation analyses were conducted in 3,369 individuals from 906 nuclear families enrolled, without selection, in a longitudinal study of respiratory health in Tucson, Arizona. Physician- diagnosed asthma and its age of onset were ascertained for each family member when children were at a mean age of 7 yr. Age of asthma diagnosis was allowed for in analyses, and the impact of the covariate total serum IgE level on age of onset was examined. Segregation analyses were conducted with and without residual family effects, with and without the covariate IgE. The hypothesis of a single two-allele locus for asthma was rejected. However, depending on the method of assessment of the residual familial effects, either a polygenic/multifactorial mode of inheritance alone, or an oligogenic model with some evidence of a recessive component present in the population with the high frequency of 0.67, were compatible with the data. Results were unchanged with the addition of the covariate IgE.

LanguageEnglish (US)
Pages144-150
Number of pages7
JournalAmerican Journal of Respiratory and Critical Care Medicine
Volume154
Issue number1
StatePublished - 1996

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Hispanic Americans
Asthma
Physicians
Immunoglobulin E
Age of Onset
Alleles
Multifactorial Inheritance
Nuclear Family
Longitudinal Studies
Health
Serum
Population
Genes

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine

Cite this

Segregation analysis of physician-diagnosed asthma in Hispanic and non- Hispanic white families : A recessive component? / Holberg, Catharine J.; Elston, Robert C.; Halonen, Marilyn; Wright, Anne L.; Taussig, Lynn M.; Morgan, Wayne J.; Martinez, Fernando D.

In: American Journal of Respiratory and Critical Care Medicine, Vol. 154, No. 1, 1996, p. 144-150.

Research output: Research - peer-reviewArticle

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