早期三阴性乳腺癌患者的功能障碍不匹配修复
María Muñiz-Castrillo1,2, Noel Blaya Boluda3,4, Esmeralda García-Torralba3,4
1Department of Medical Oncology, Hospital Universitario Central de Asturias (HUCA), Avenida de Roma s/n, 33011, Oviedo, Spain. mmunizcastrillo@gmail.com.
概括
不匹配修复 (MMR) 缺陷在早期三阴性乳腺癌 (TNBC) 中不常见,并且与微卫星不稳定性 (MSI) 不相关. 不建议进行孤立的MMR测试,但应考虑将其纳入多基因组.
科学领域:
- 在瘤学瘤学.
- 遗传学 是一个遗传学.
- 癌症研究 癌症研究
背景情况:
- 不匹配修复 (MMR) 缺陷是几种癌症的已知因素,但它对三阴性乳腺癌 (TNBC) 的意义尚不清楚.
- 这项研究全面评估了TNBC早期的MMR,重点关注患病率,临床相关性,预后价值和与微观卫星不稳定性 (MSI) 的关系.
研究的目的:
- 评估不匹配修复 (MMR) 缺陷在早期三阴性乳腺癌 (TNBC) 的患病率和临床意义.
- 调查MMR状态,微卫星不稳定性 (MSI) 和TNBC患者结局之间的关系.
主要方法:
- 通过下一代测序和蛋白质表达通过免疫组织化学在两个早期TNBC队列中检查了生殖基因突变.
- 评估微卫星不稳定性 (MSI) 状态和相关的MMR发现与临床病理特征和生存率.
- 使用癌症基因组图谱 (TCGA) 数据验证的结果.
主要成果:
- 在8.2%的患者中发现了MMR缺乏,主要是由于PMS2损失,在缺乏病例中没有检测到MSI.
- 在35.8%的患者中观察到异质的MMR表达,在早期阶段和较小的瘤中更常见.
- MMR状态与临床病理学变量,存活率或对新辅助化疗反应没有显著的相关性.
结论:
- 不匹配修复 (MMR) 系统在TNBC中表现出较低的变化率,缺陷是罕见的,与MSI无关.
- 由于影响有限,单独的MMR测试对早期TNBC没有临床的理由.
- 在TNBC的多基因面板中考虑MMR可能是合理的.
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