One 49-year-old male white patient, who was diagnosed with ALS according to modified El Escorial criteria of World Federation of Neurology, had suffered from gradually progressive weakness and muscle atrophy of upper and lower extremities for 2 years.

• 报告1例患者:白人男性,49岁,德国籍,进行性四肢无力伴肌萎缩2年。