[对169名非小细胞肺癌患者的遗传变异研究]
Lydia Formanti Alonso1, Lidia Atienza Cuevas2, Raquel Romero García2
1Unidad de Gestión Clínica Anatomía Patológica, Hospital Universitario de Jerez de la Frontera, Jerez de la Frontera, Cádiz, España; Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA), Cádiz, España.
概括
这项研究分析了非小细胞肺癌 (NSCLC) 的遗传变异和蛋白质表达. 研究人员发现了特定基因变异和免疫组织化学标记物之间的新联系,可能会影响NSCLC治疗.
科学领域:
- 在瘤学瘤学.
- 遗传学 是一个遗传学.
- 病理学 病理学 病理学
背景情况:
- 非小细胞肺癌 (NSCLC) 是癌症死亡的主要原因.
- 个性化医疗方法对于NSCLC治疗至关重要.
- 了解NSCLC的分子格局对于有针对性的疗法至关重要.
研究的目的:
- 分析NSCLC中临床显著遗传变异的分布.
- 研究NSCLC中TTF1,p40和PD-L1的免疫组织化学表达.
- 为了确定分子标记物和NSCLC亚型之间的潜在关联.
主要方法:
- 免疫组织化学被用来评估TTF1,p40和PD-L1的表达.
- 用52个基因小组对174个NSCLC样本进行了下一代测序 (NGS).
- 分析了遗传变异,包括单核酸变异 (SNVs) 和副本数变异 (CNVs).
主要成果:
- KRAS (36%) 和EGFR (14%) 是最常见的SNVs. NF1 (30%) 和EGFR (18%) 放大是常见的CNVs.
- 在女性中,EGFR SNVs的发病率更高. 腺癌显示了KRAS或EGFRSNV的更高频率.
- 在9.47%的病例中检测到基因融合,其中MET基因融合是最常见的.
结论:
- 在NSCLC中,免疫组织化学表达和特定基因变异之间发现了新的关联.
- 这些发现可能会影响NSCLC患者的治疗策略.
- 这项研究为NSCLC的分子异质性提供了宝贵的见解.
更多相关视频
相关概念视频
01:05Single Nucleotide Polymorphisms-SNPs
15.2K
A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
15.2K
02:26Comparing Copy Number Variations and SNPs
17.7K
Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
17.7K
01:11Genome-wide Association Studies-GWAS
13.5K
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
13.5K
02:30Histone Variants at the Centromere
4.4K
Histone variants are the histone proteins with structural and sequence variations. These variants may be regarded as “mutant” forms that replace their canonical histone counterparts in the nucleosomes. Specific post-translational modifications on the histone variants enable further chromatin complexity and regulate tissue-specific gene expression. The most common histone variants are from histone H2A, H2B, and linker histone H1 families. However, several variants of histone H3...
4.4K