A locus for autosomal dominant accessory auricular anomaly maps to 14q11.2–q12

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• 作者：Yongjia Yang ; Jihong Guo ; Zheng Liu ; Siyuan Tang ; Ningdong Li ; Mengrong Yang ; Qiong Pang ; Feiyue Fan ; Juan Bu and Song Tao Yuan ; et al.
• 刊名：Human Genetics
• 出版年：2006
• 出版时间：August 2006
• 年：2006
• 卷：120
• 期：1
• 页码：144-147
• 全文大小：259 KB

文摘

Accessory auricular anomaly is a small excrescence of skin that contains elastic cartilage on different regions of the helix and the face. Previous work has shown that the genetic trait of some patients with the isolated symptom of accessory auricular anomaly is autosomal dominant. To map the gene for autosomal dominant accessory auricular anomaly (ADAAA), we investigated a Chinese family with 11 affected individuals. We performed linkage analysis with microsatellite markers spanning the whole human-genome in the family. The inheritance pattern of the ADAAA family was autosomal dominant with complete penetrance. Two-point linkage analysis revealed significant maximum LOD scores of 4.20(D14S990 and D14S264, sita = 0) in the family. Haplotype construction and multipoint linkage analysis also confirmed the locus and defined the isolated ADAAA locus to a 9.84 cM interval between the markers D14S283 and D14S297. Our study assigned an isolated ADAAA locus to 14q11.2–q12. This is the first ADAAA locus reported to date.