在患有卵膜黑色素瘤的患者中,生殖细胞癌敏感性变异
Pauliina E Repo1,2, Eveliina Jakkula3, Juho Hiltunen1
1Eye Genetics Group, Folkhälsan Research Center, Helsinki, Finland.
Pigment cell & melanoma research
|September 16, 2025
概括
遗传倾向于毛膜黑色素瘤 (UM) 比以前认为的更为常见. 外体序列测序在15%的UM患者中发现了缺乏BAP1变异的致病变体,这表明了与UM的新遗传联系.
科学领域:
- 遗传学 是一个遗传学.
- 在瘤学瘤学.
- 眼科医生 眼科 眼科
背景情况:
- 卵巢黑色素瘤 (UM) 在约2%的患者中显示出遗传性癌症倾向,主要与BAP1变异有关.
- 很大一部分 (高达75%) 的家族性UM (FUM) 病例缺乏遗传诊断,这表明其他有贡献的基因.
- 识别新的遗传因素对于理解UM病因和改善风险评估至关重要.
研究的目的:
- 在患有癌症风险增加的患者中,研究超出BAP1的UM遗传景观.
- 识别与UM倾向相关的主导和衰退性癌症基因中的致病性生殖系变异.
- 探索多部位变异在UM发展中的作用.
主要方法:
- 来自106名UM患者的血液样本的外测序,癌症风险高于平均水平,没有BAP1致病或可能致病 (P/LP) 变体.
- 分析的重点是识别已知癌症相关的主导和衰退基因中的P/LP变异.
- 患者之间诊断时的年龄的比较,有和没有确定的P/LP变体.
主要成果:
- 15%的UM患者 (16/106) 携带至少一个P/LP变异在主导 (例如,CHEK2,FANCM) 或衰退的癌症基因.
- CHEK2和FANCM最近与UM倾向有关.
- 6%的患者患有多部位P/LP变体,UM诊断的中位数年龄较早 (51岁相比60岁).
结论:
- 对UM的遗传倾向超出了BAP1,新型基因如CHEK2和FANCM发挥了作用.
- 同时发生的致病变体,可能表明多位传承瘤等位基综合征 (MINAS),可能会导致UM.
- 需要进一步的研究来探索额外的基因,低透率的变体和多基因对UM倾向的影响,特别是在家族病例中.
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