Unité de Génétique Somatique, Institut Curie, Paris, France.
Unité INSERMU830, Institut Curie, Paris, France.
Eur J Hum Genet. 2018 Aug;26(8):1217-1221. doi: 10.1038/s41431-018-0147-x. Epub 2018 Apr 30.
Osteosarcoma is the most common malignant bone tumor in adolescents and young adults. Most osteosarcomas are sporadic but the risk of osteosarcoma is also increased by germline variants in TP53, RB1 and RECQL4 genes. ATRX germline variations are responsible for the rare genetic disorder X-linked alpha-thalassemia mental retardation (ATR-X) syndrome characterized by severe developmental delay and alpha-thalassemia but no obvious increased risk of cancer. Here we report two children with ATR-X syndrome who developed osteosarcoma. Notably, one of the children developed two osteosarcomas separated by 10 years. Those two cases raise the possibility that ATRX germline variant could be associated with an increased risk of osteosarcoma.
骨肉瘤是青少年和年轻人中最常见的恶性骨肿瘤。大多数骨肉瘤是散发性的,但 TP53、RB1 和 RECQL4 基因的种系变异也会增加骨肉瘤的风险。ATRX 种系变异可导致罕见的遗传疾病 X 连锁α-地中海贫血智力低下(ATR-X)综合征,其特征为严重的发育迟缓伴α-地中海贫血,但癌症风险无明显增加。在这里,我们报告了两名患有 ATR-X 综合征的儿童,他们均发生了骨肉瘤。值得注意的是,其中一名儿童在 10 年内发生了两次骨肉瘤。这两个病例提示 ATRX 种系变异可能与骨肉瘤风险增加有关。