Centre de Référence Neuromusculaire, Department of Neurology, Cliniques Universitaires de Bruxelles, Hôpital Erasme, Université libre de Bruxelles (ULB), Route de Lennik 808, 1070, Brussels, Belgium.
Department of Genetics, Cliniques Universitaires de Bruxelles, Hôpital Erasme, Université libre de Bruxelles (ULB), Route de Lennik 808, 1070, Brussels, Belgium.
Neurogenetics. 2021 Mar;22(1):95-101. doi: 10.1007/s10048-020-00631-4. Epub 2021 Jan 4.
C19orf12 gene biallelic mutations lead mainly to neurodegeneration with brain iron accumulation-4. A 15-year-old male and his 17-year-old sister complained of cramps and exercise intolerance. Clinical examination of the boy mainly showed distal amyotrophy and mild weakness, while the sister predominantly had a tetrapyramidal syndrome. Widespread chronic neurogenic signs and hypointense signals on the striatum were present in both patients. Clinical exome sequencing identified, on both patients, the compound heterozygous pathogenic mutations c.204_214del p.(Gly69ArgfsTer10) and c.32C>T p.(Thr11Met). The description of these rare SPG43 and ALS-like phenotypes in the same family contributes to improve genotype-phenotype correlation in C19orf12-related diseases.
C19orf12 基因双等位基因突变主要导致伴脑铁沉积的神经退行性疾病 4 型。一名 15 岁男性和他 17 岁的妹妹抱怨抽筋和运动不耐受。男孩的临床检查主要表现为远端肌萎缩和轻度无力,而妹妹主要表现为锥体外系综合征。两名患者均存在广泛的慢性神经源性体征和纹状体低信号。临床外显子组测序在两名患者中均发现了复合杂合致病性突变 c.204_214del p.(Gly69ArgfsTer10)和 c.32C>T p.(Thr11Met)。同一家庭中这些罕见的 SPG43 和类似 ALS 的表型的描述有助于改善 C19orf12 相关疾病的基因型-表型相关性。