在胰腺癌局部和高级阶段的Codon-特定KRAS突变的预后影响
medRxiv : the preprint server for health sciences
|February 20, 2025
概括
特定的KRAS突变会根据疾病阶段对胰腺癌存活率产生不同的影响. G12V突变与早期疾病的生存时间更长有关,但在晚期胰腺管腺癌 (PDAC) 中的生存时间更短.
科学领域:
- 在瘤学瘤学.
- 遗传学 是一个遗传学.
- 癌症研究 癌症研究
背景情况:
- KRAS突变是胰腺管腺癌 (PDAC) 的关键驱动因素.
- 了解子特异性KRAS变化及其对患者结果的影响至关重要,但由于数据的可用性而受到限制.
- 现有的研究缺乏全面的数据集,将基因组资料与所有PDAC阶段的详细临床信息联系起来.
研究的目的:
- 调查子特异性KRAS突变与PDAC中的临床基因组特征之间的关联.
- 分析不同KRAS突变对患者在局部和晚期疾病阶段的存活率的影响.
- 为了解KRAS突变类型如何影响PDAC中的结果提供见解.
主要方法:
- 使用了AACR的GENIE生物制药联盟胰腺v1.2数据集.
- 分析了1,032名符合条件的PDAC患者的数据,包括局部 (I-III阶段) 和晚期 (IV阶段) 疾病患者.
- 采用卡普兰-梅尔和多变量考克斯的比例危险方法来比较整体生存期.
主要成果:
- 92%的PDAC患者 (949/1,032) 患有KRAS突变,主要是G12D (41%),G12V (32%) 和G12R (16%).
- 在局部PDAC中,G12V突变与比G12D (P=0.002) 显著更长的存活率相关.
- 在先进的PDAC中,G12V突变与G12R (P=0.005) 和G12D (P=0.009) 相比,与更短的存活时间有关.
- 在KRAS突变类型之间没有观察到共同改变的驱动基因 (TP53,CDKN2A,SMAD4) 的显著差异.
结论:
- 特定于Codon的KRAS突变对PDAC患者的结果有不同的影响,这取决于诊断时的疾病阶段.
- 这些发现为新兴的KRAS抑制剂研究提供了有价值的背景.
- 了解这些特定阶段的生存关联对于PDAC当前的治疗策略很重要.
更多相关视频
06:51Utilizing 18F-FDG PET/CT Imaging and Quantitative Histology to Measure Dynamic Changes in the Glucose Metabolism in Mouse Models of Lung Cancer
Published on: July 21, 2018
17.6K
06:57Utilizing High Resolution Ultrasound to Monitor Tumor Onset and Growth in Genetically Engineered Pancreatic Cancer Models
Published on: April 7, 2018
10.7K
相关概念视频
The Ras Gene
6.1K
The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family in humans constitutes three primary members—the HRas, NRas, and KRas. These genes code for four functionally distinct yet closely related proteins—the HRas, NRas, KRas4A, and KRas4B. The involvement of mutant Ras genes in human cancer was first discovered in 1982 and is among the most common causes of human tumorigenesis.
Ras is a...
Ras is a...
6.1K
Cancer-Critical Genes I: Proto-oncogenes
8.7K
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...
8.7K
mTOR Signaling and Cancer Progression
3.7K
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
3.7K
Tumor Progression
6.2K
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
6.2K
Abnormal Proliferation
4.4K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.4K
Targeted Cancer Therapies
7.4K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
7.4K
