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在患有直肠癌和多的患者中出现双性MLH3变异的新案例

Katrine M Johannesen¹, John Gásdal Karstensen^2,3, Andreas Ørslev Rasmussen⁴

¹Department of Genetics, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.

Clinical genetics

|January 10, 2025

概括

这项研究报告了一种罕见的早期结直肠癌病例,与双基因MLH3基因变异有关. 这些发现凸显了MLH3作为腺瘤多重症和癌症的潜在原因,需要进一步调查.

科学领域:

遗传学是一个遗传学.
在瘤学瘤学.
胃肠病学胃肠病学

背景情况:

腺瘤多重症和结直肠癌 (CRC) 已知存在遗传联系.
人们越来越多地认识到自体递归形式的多重症,尽管有些异常罕见.
MLH3基因在CRC病原发生中的作用尚未完全阐明.

研究的目的:

描述一个罕见的病例,患者患有早期发病的CRC和腺瘤多重症.
调查患者病情的遗传基础,重点关注生殖系变异.
探索MLH3基因在遗传性结直肠癌综合征中的潜在作用.

主要方法:

一个47岁的女性患者的病例报告显示,她患有直肠出血.
诊断性结肠镜检查显示了恶性直肠瘤和腺瘤.
瘤组织的组织病理学检查 (腺癌,MSS).
细菌系遗传测试以确定致病变体.

主要成果:

该患者在MLH3基因中存在双性,可能致病性,框架转移变异.
这些变体在变体中被确定,表明化合物异构性.
瘤表现出微卫星稳定性 (MSS),这一发现通常与不匹配修复 (MMR) 基因缺陷无关.

结论:

这一案例意味着双基MLH3变体是早期结直肠癌和腺瘤多重症的潜在原因.
这些发现扩大了遗传多重症综合征的基因型谱.
需要进一步的研究来了解MLH3在DNA修复,癌症发展和潜在的不孕症联系中的功能.

关键词:

MLH3 没有使用.结肠直肠癌是什么意思多种类型的多重构成.这是一种衰退式的衰退式.综合征综合征是指一个综合征.

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