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Pedigree Analysis of Seven Cases

Jianzhong Gao; Yuming Chen; Yipeng Gao

Arch Otolaryngol Head Neck Surg. 1990;116(10):1194-1196.

Abstract
• We performed an investigation of 50 accessory auricles on subjects encountered during 1983 through 1985. Fifteen of the families were found to have the same accessory auricular deformity among the probands' family members. From these 15 families, we selected seven pedigrees that were not accompanied by auricular deformities who had filial generations for analysis. Pedigrees 1 through 6 showed autosomal dominant inheritance; two also had irregular dominant properties (pedigrees 4 and 7), and one (pedigree 7) could not be excluded from the possibility of having an X-linked recessive inheritance. During the investigation, there were latent accessory auricles in which the cartilages were seen to be subcutaneous only or protruding slightly. Genetically, the pathogenesis of an accessory auricle should be related to the accessory auricular gene.

(Arch Otolaryngol Head Neck Surg. 1990;116:1194-1196)

Author Affiliations
From the Department of Ear, Nose, and Throat, Ningxia College of Medicine (Drs J. Gao and Y. Gao), and the No. 5 Army Hospital (Dr Chen), Yinchuan, People's Republic of China.

Footnotes
Accepted for publication April 24, 1990.

Reprint requests to Department of Ear, Nose, and Throat, Ningxia College of Medicine, 750004 Yinchuan, Ningxia, People's Republic of China (Dr J. Gao).

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