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Complex segregation analysis of 1,792 cleft lip and palate families in South America: 1967-1997
Journal article   Open access   Peer reviewed

Complex segregation analysis of 1,792 cleft lip and palate families in South America: 1967-1997

Alexandre Rezende Vieira, Paul Anthony Romitti, Iêda Maria Orioli and Eduardo Enrique Castilla
Pesquisa odontológica brasileira, Vol.17(2), pp.161-165
04/2003
DOI: 10.1590/S1517-74912003000200012
PMID: 14569360
url
https://doi.org/10.1590/S1517-74912003000200012View
Published (Version of record) Open Access

Abstract

Although several studies have demonstrated familial aggregation of nonsyndromic cleft lip with or without cleft palate (CL/P), its model of inheritance remains uncertain. We report the results of complex segregation analysis performed in South American families with a newborn affected with CL/P. Families of 1,792 consecutive newborns affected with CL/P and registered during the period 1967 to 1997 were studied. A model that did not include a major locus was the best-fitting model for CL/P families. This result is in agreement with previous studies which showed a significant association of several putative susceptibility loci and CL/P, indicating that the genes involved in CL/P are likely to have only a very modest impact on disease risk.
Cleft Lip - genetics Genetic Predisposition to Disease South America - epidemiology Cleft Lip - epidemiology Humans Cleft Palate - genetics Cleft Palate - epidemiology Multifactorial Inheritance Infant, Newborn

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