使用日本基因组数据库对黑色素瘤类型的遗传分析
Hayato Matsumoto1, Hiromi Nagano1, Takayuki Kyutoku1
1Department of Otolaryngology Head and Neck Surgery, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan.
The Laryngoscope
|August 9, 2024
概括
头部和部粘膜黑色素瘤 (HNMUM) 与眼球黑色素瘤 (OM) 相比,与皮肤黑色素瘤 (SKM) 更接近的基因突变. 目前的免疫检查点抑制剂 (ICI) 治疗在这些黑色素瘤类型中表现出类似的疗效.
科学领域:
- 在瘤学瘤学.
- 遗传学 遗传学是一种遗传学.
- 免疫治疗是一种免疫疗法.
背景情况:
- 头部和部粘膜黑色素瘤 (HNMUM) 是一种罕见的亚型,具有独特的特征.
- 了解其遗传格局和对治疗的反应对于改善患者的治疗结果至关重要.
- 与更常见的黑色素瘤类型,皮肤黑色素瘤 (SKM) 和眼睛黑色素瘤 (OM) 的比较,提供了宝贵的见解.
研究的目的:
- 为了比较基因突变,瘤突变负担 (TMB),以及分子向药物和免疫检查点抑制剂 (ICI) 在HNMUM与SKM和OM中的疗效.
- 为了确定HNMUM中普遍存在的特定遗传变异.
- 评估HNMUM中ICI的治疗潜力.
主要方法:
- 在72名HNMUM,366名SKM和31名OM患者的基因变异和TMB分析,使用FoundationOne CDx下一代测序.
- 对三种黑色素瘤亚型的突变概况,TMB值和生存数据进行比较.
- 对分子向药物和ICI的治疗反应的评估.
主要成果:
- 在HNMUM中最重要的突变包括RAD21,NBN和MYC;突变配置文件更类似于OM而不是SKM.
- 在HNMUM,SKM和OM (分别为5.7±2.1,4.1±0.2和3.4±0.9) 中,TMB值没有显著差异.
- 远程转移的中位生存时间各不相同:HNMUM (803天),SKM (1413天) 和OM (1138天).
结论:
- HNMUM表现出一个更符合OM的遗传特征,而不是SKM.
- 在三种黑色素瘤类型中,没有观察到TMB或存活率在ICI疗效方面存在显著差异.
- 目前使用ICI的治疗策略似乎适合HNMUM.
相关概念视频
01:12Loss of Tumor Suppressor Gene Functions
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
01:05Cancer-Critical Genes II: Tumor Suppressor Genes
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
01:05Cancer-Critical Genes II: Tumor Suppressor Genes
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...