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<p>Myoclonus-Dystonia (M-D) is a rare autosomal dominant disorder predominantly characterized by myoclonus and focal or segmental dystonia. Symptoms typically onset during childhood and are often triggered by specific postures or actions. SGCE gene mutations are the main cause of M-D. The SGCE gene is located on the chromosomal region 7q21 and encodes the ε-sarcoglycan protein. Inheritance follows a paternal transmission pattern with maternal imprinting. Although studies on M-D have expanded, the pathophysiological mechanisms remain to be fully elucidated. To better understand the comprehensive review of SGCE-related M-D (SGCE-M-D), this article focuses on its the clinical manifestations, molecular genetics, pathophysiological mechanisms, and therapeutic strategies in SGCE-M-D. Additionally, we present a schematic illustrating the distribution of SGCE gene variants at the amino acid level.</p>

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From SGCE gene to symptoms: decoding myoclonus-dystonia

  • 期刊论文

  • 发表日期：

    2025年12月3日

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  • Xiaoxue Peng,
  • Xiaoyang Lei,
  • Lang Yang,
  • Dian He

摘要

Myoclonus-Dystonia (M-D) is a rare autosomal dominant disorder predominantly characterized by myoclonus and focal or segmental dystonia. Symptoms typically onset during childhood and are often triggered by specific postures or actions. SGCE gene mutations are the main cause of M-D. The SGCE gene is located on the chromosomal region 7q21 and encodes the ε-sarcoglycan protein. Inheritance follows a paternal transmission pattern with maternal imprinting. Although studies on M-D have expanded, the pathophysiological mechanisms remain to be fully elucidated. To better understand the comprehensive review of SGCE-related M-D (SGCE-M-D), this article focuses on its the clinical manifestations, molecular genetics, pathophysiological mechanisms, and therapeutic strategies in SGCE-M-D. Additionally, we present a schematic illustrating the distribution of SGCE gene variants at the amino acid level.