早期发生的默克尔细胞癌的遗传风险因素
Noreen Mohsin1, Devin Hunt2, Jia Yan2
1Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, Maryland.
JAMA dermatology
|January 3, 2024
概括
癌症倾向基因中的遗传变异与早期发病的默克尔细胞癌 (MCC) 有关. 基因组测序确定了这些风险因素,建议为年轻的MCC患者提供遗传咨询.
科学领域:
- 在瘤学瘤学.
- 遗传学 是一个遗传学.
- 皮肤病学 皮肤病学
背景情况:
- 默克尔细胞癌 (MCC) 是一种罕见的,侵袭性的神经内分泌性皮肤癌,每年只有4%的病例发生在50岁以下的个体中.
- 识别早期MCC的遗传风险因素对于了解疾病病因和改善患者的治疗结果至关重要.
研究的目的:
- 通过全面的基因组测序来确定与早期MCC相关的遗传风险因素.
- 为了比较早期发病的MCC患者与晚期发病的MCC患者和健康对照者的遗传特征.
主要方法:
- 一项多中心病例控制研究涉及1012名参与者:37名患有早期发病的MCC,45名患有晚期发病的MCC,以及930名无关对照.
- 基因组测序是在2003年1月至2021年9月期间注册的参与者身上进行的.
- 分析的重点是识别致病性或可能致病性变异在癌症倾向和DNA修复基因.
主要成果:
- 在37名早期MCC患者中,7名 (19%) 患有癌症倾向基因变异,包括ATM,BRCA1,BRCA2,TP53和MAGT1.
- 早期发病的MCC队列与对照组相比显示出这些变异的显著丰富 (OR,30.35;P <.001).
- 在晚期发病的MCC组中没有发现这些特定基因的生殖系变异.
结论:
- 基因修复和癌症倾向基因中的生殖系变异与早期发病的MCC有显著的关联.
- 在50岁之前被诊断患有MCC的个体应考虑进行遗传咨询和测试.
- 这些发现凸显了这种罕见癌症的年轻患者遗传评估的重要性.
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