Department of Paediatrics, SIMATS Deemed University, Saveetha Medical College and Hospital, Chennai, Tamil Nadu, India.
Department of Paediatrics, SIMATS Deemed University, Saveetha Medical College and Hospital, Chennai, Tamil Nadu, India
BMJ Case Rep. 2024 May 27;17(5):e260321. doi: 10.1136/bcr-2024-260321.
Limb-girdle muscular dystrophy (LGMD) comprises a heterogeneous group of rare genetic disorders characterised by progressive weakness and atrophy of the muscles, primarily affecting the pelvic and shoulder girdles. A developmentally normal, early adolescent male presented with complaints of difficulty in using all four limbs with a waddling gait, gradually progressive over the last 5 years. No significant family history was noted. We noticed thinning and atrophy of both upper and lower limbs, proximal more than distal, associated with wasting, hypotonia and decreased power in all four limbs. Gower's sign was positive. The winging of the scapula was present. All deep tendon reflexes and superficial reflexes were present with flexor response in both plantars. The sensory system was normal. An initial diagnosis of muscular dystrophy was made and confirmed with clinical exome sequencing, which showed a pathogenic variant indicating a very rare type of autosomal recessive LGMD. This disease was previously named LGMD2C and has now been renamed under LGMDR5.
肢带型肌营养不良症(LGMD)是一组罕见的遗传性疾病,其特征为肌肉进行性无力和萎缩,主要影响骨盆带和肩胛带。一位发育正常的青少年男性,诉 5 年来逐渐出现四肢使用困难,呈鸭步,无明显家族史。我们注意到四肢的肌肉变薄和萎缩,近端比远端更明显,伴有肌肉消耗、低张力和四肢肌力下降。出现 Gower 征。存在肩胛骨翼状。所有深腱反射和浅反射存在,双足跖屈呈屈肌反应。感觉系统正常。最初诊断为肌营养不良症,并通过临床外显子组测序得到证实,该测序显示一种致病性变异,提示一种非常罕见的常染色体隐性肢带型肌营养不良症。该疾病以前称为 LGMD2C,现在根据 LGMDR5 重新命名。