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探索低生殖基因突变负载和低乳腺癌发病率之间的联系:从萨万特印第安人的经验中吸取教训

José Rueff¹, João Conde¹, Guilherme Castro²

¹NOVA Medical School|Faculdade de Ciências Médicas, NMS|FCM, Universidade NOVA de Lisboa, Lisbon, Portugal; ToxOmics, NOVA Medical School|Faculdade de Ciências Médicas, NMS|FCM, Universidade NOVA de Lisboa, Lisbon, Portugal.

Translational oncology

|March 14, 2025

概括

与全球人口相比,Xavante群体的突变负担显著降低,乳腺癌风险降低. 这表明自然保护的遗传环境有助于降低癌症发病率.

科学领域:

遗传学遗传学是一个
在瘤学瘤学.
人口健康人口健康

背景情况:

癌症研究侧重于细胞转化机制,关于生殖与体质起源的争论仍在进行中.
遗传多样性在了解癌症易感性和开发有效治疗中起着至关重要的作用.
萨万特土著人口为调查癌症发病率的遗传因素提供了一个独特的案例研究.

研究的目的:

调查导致Xavante群体观察到的癌症发病率较低的遗传因素.
为了比较Xavante个体与全球人口的突变负担和多基因癌症风险得分.
探索遗传多样性对个性化癌症预防策略的影响.

主要方法:

与全球队列相比,Xavante女性的突变负担的统计分析.
在Xavante与TCGA队伍中计算和比较乳腺癌的多基因风险得分 (PRS).
沙万特人群中乳腺癌发病率与预期率的流行病学比较.

主要成果:

与全球人口相比,Xavante女性的突变负担明显较低 (p < 0.0001),癌症相关基因有害变异较少.
与TCGA队伍 (∼80-90) 相比,Xavante (∼35) 的乳腺癌多基因风险平均得分明显较低 (p < 0.0001).
与预期率相比,Xavante人口中没有乳腺癌病例是统计学上显著的 (p < 0.001).

结论:

萨万特种群拥有一种遗传风景,似乎可以防止癌症,特别是乳腺癌.
遗传多样性是癌症研究和个性化预防性医疗保健的发展的关键因素.
这些发现支持一种模式转变,即将人口特异性的遗传见解纳入癌症预防和治疗策略.

关键词:

乳腺癌乳腺癌乳腺癌基因组学就是基因组学.细菌线突变的发生.易感性易感性易感性萨万特印第安人的印第安人

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