与PMS2相关的宪法不匹配修复缺陷中的基因型-表型相关性:一个系统的文献审查
Cătălin Vasile Munteanu1,2, Diana Luisa Lighezan3,4, Alexandru Capcelea1,5
1Doctoral School, Victor Babeş University of Medicine and Pharmacy, Timişoara, Romania.
Oncology reviews
|December 3, 2025
概括
与PMS2变体相关的宪法不匹配修复缺陷 (CMMRD) 显示出基于发病年龄的不同瘤模式. 早期发病的PMS2-CMMRD主要涉及中枢神经系统瘤,而晚期发病的病例更多地与肠道瘤有关.
科学领域:
- 儿科瘤学 儿科瘤学
- 癌症遗传学 癌症遗传学
- 基因组医学是基因组医学.
背景情况:
- 宪法不匹配修复缺陷 (CMMRD) 是一种罕见的儿科癌症综合征.
- 与PMS2相关的CMMRD (PMS2-CMMRD) 是最常见的亚型,临床表现不同.
- 在PMS2-CMMRD中,基因型-表型相关性尚未得到充分证实.
研究的目的:
- 通过从文献中分析临床病例来描述PMS2-CMMRD组.
- 调查基因型-表型相关性,特别是基于发病年龄的瘤分布.
- 要区分早期发病的PMS2-CMMRD和晚期发病的PMS2-CMMRD.
主要方法:
- 来自ClinVar.的病原性/可能病原性PMS2变体 (<50bp) 相关的临床病例文献综述.
- 使用VarChat,VarSome和LitVar2进行案例收集.
- 将PMS2-CMMRD病例分为早期发病 (诊断年龄<10年) 和晚期发病 (诊断年龄>10年) 的两组.
主要成果:
- 在早期发病和晚期发病组之间观察到瘤分布的显著差异.
- 中枢神经系统 (CNS) 瘤在早期发病组中最为普遍.
- 胃肠道 (GI) 瘤在晚些时候开始的组中更常见.
- 六种特定的PMS2变异与早期或晚期出现的CMMRD有关.
结论:
- 发病年龄是PMS2-CMMRD瘤分布的一个重要因素.
- 研究结果表明,早期和晚期PMS2-CMMRD的临床轨迹不同.
- 需要进一步的前性研究来验证这些发现,并为PMS2-CMMRD和PMS2-Lynch综合征的临床管理提供信息.
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