两种生殖系DICER1拼接变异的重新分类导致了DICER1综合征诊断
Maria Apellaniz-Ruiz1, Nelly Sabbaghian2, Anne-Laure Chong2
1Genomics Medicine Unit, Navarrabiomed, Hospital Universitario de Navarra (HUN), Universidad Pública de Navarra (UPNA), IdiSNA, Calle Irunlarrea 3, 31008, Pamplona, Navarra, Spain. mv.apellaniz.ruiz@navarra.es.
Familial cancer
|May 29, 2023
概括
在两名患有罕见卵巢瘤和子的十几岁女孩中,DICER1综合征的诊断得到证实. 确定了影响拼接的新型内基变异,有助于诊断.
科学领域:
- 遗传学 是一个遗传学.
- 在瘤学瘤学.
- 内分泌学 在内分泌学.
背景情况:
- DICER1综合征呈现出各种瘤和瘤,通常是早期诊断出来的.
- 诊断挑战来自不确定的意义的变体和罕见的表型.
- 准确的诊断对于有效的患者管理至关重要.
研究的目的:
- 为了调查两个疑似DICER1综合征病例与不寻常的呈现.
- 在受影响的患者中表征生殖系变异和体质突变.
- 用更新的分类规则来确认DICER1综合征的诊断.
主要方法:
- 临床评估两名女性 (13岁和15岁) 患有多节和卵巢瘤的患者.
- 对DICER1生殖系致病变体进行遗传查.
- 在合分析和RNA测试以评估变异影响.
- 在瘤组织中检测体质DICER1突变.
主要成果:
- 这两位患者都出现了多节和明显的卵巢瘤 (SLCT和SLCT的 retiform变体).
- 没有发现典型的生殖系致病性DICER1变体;然而,确定了两种内部拼接变体 (c.5365-4A>G,c.5527+3A>G).
- 在瘤组织中检测到体内DICER1突变,并证实了生殖系变异的剪接变化.
- 更新的分类规则证实了这两名患者的DICER1综合征.
结论:
- 影响DICER1拼接的生殖线内基变异可能导致DICER1综合征.
- 瘤组织中的体质突变以及特定的生殖系变异有助于诊断.
- 准确的DICER1变异分类对于诊断罕见呈现是必不可少的.
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