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  • Title: Genetic epidemiology of cleft lip with or without cleft palate in the population of Hawaii.
    Author: Chung CS, Mi MP, Beechert AM.
    Journal: Genet Epidemiol; 1987; 4(6):415-23. PubMed ID: 3428570.
    Abstract:
    Orientals consisting of Japanese, Chinese, Koreans, and Filipinos are clearly at higher risk for cleft lip with or without cleft palate [CL(P)] than whites, Puerto Ricans, and Hawaiians/part-Hawaiians in Hawaii. Using the model of diallele cross, CL(P) incidences in incrosses and outcrosses involving 564,002 live births distributed among 669 mating types were analyzed to study the extent of major gene involvement in the difference in the two groups and to investigate maternal effect in the etiology of CL(P). CL(P) cases excluding syndrome cases were classified into two types: all CL(P) cases and CL(P) cases without additional malformations. For either type there was no evidence to suggest that simple major gene plays a dominant role in accounting for racial differences as measured by deviations from additivity in the hybrids. For CL(P) cases without additional defects, a negative "maternal effect" was detected in Filipinos such that higher risk for this racial group depends on when the father is Filipino. Implications of the findings are discussed.
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