Objective:To detect the 17p11.2 p12 duplication in Chinese Charcot Marie Tooth 1 patients, and to analyze the clinical feature of the patients. Methods:Extract DNA from the peripheral white blood cell of 29 members from 15 CMT1 families.

• 目的：探察国人Charcot－Marie－Tooth 病1A （CMT1A） 型患者的17p11.；2－p12 区基因重复及与临床表现型的关系。