在现实环境中对CDK4/6抑制剂的反应的决定因素
Agnieszka K Witkiewicz1,2, Emily Schultz3, Jianxin Wang3
1Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA. agnieszka.witkiewicz@roswellpark.org.
NPJ precision oncology
|September 13, 2023
概括
现实数据表明,瘤特征如SBR得分和PR表达影响了乳腺癌中CDK4/6抑制剂的有效性. 在治疗期间的基因表达变化也预测了无进展的生存.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 临床研究 临床研究
背景情况:
- 结合内分泌治疗的CDK4/6抑制剂是HR+/HER2-乳腺癌的标准.
- 关于疾病演变和治疗反应决定因素的现实数据有限.
研究的目的:
- 在接受CDK4/6抑制剂和内分泌治疗的患者中探索疾病特征和无进展生存 (PFS) 和整体生存 (OS) 的决定因素.
- 分析与治疗反应相关的病理和生物特征.
主要方法:
- 对280名接受了palbociclib加上芳酶抑制剂 (AI) 或富尔韦斯特兰特 (FUL) 的患者的回顾性分析.
- 对修改的斯卡夫-布鲁姆-理查德森 (SBR) 评分和ER,HER2,PR表达的评估.
- 在治疗前和治疗期间进行基因表达概况的活检.
主要成果:
- 在AI组合中,SBR得分和缺乏PR表达与更短的PFS有关 (HR=3.86).
- 在治疗期间,基因表达揭示了细胞周期和雌激素受体信号的变化.
- 光线B,HER2和基底亚型显示PFS较短,但没有OS.
- 细胞周期基因组与较短的PFS相关;在AI队列中,雌激素受体信号与较长的PFS相关.
结论:
- HR+/HER2-乳腺癌的独特病理和生物特征会影响对CDK4/6抑制剂的反应.
- SBR评分,PR表达和特定的基因表达特征是重要的预测标记.
- 了解这些特征可以优化乳腺癌的治疗策略.
相关概念视频
Inhibition of Cdk Activity
4.8K
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
4.8K
M-Cdk Drives Transition Into Mitosis
5.6K
Checkpoints throughout the cell cycle serve as safeguards and gatekeepers, allowing the cell cycle to progress in favorable conditions and slow or halt it in problematic ones. This regulation is known as the cell cycle control system.
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
5.6K
Combination Therapies and Personalized Medicine
4.9K
Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a single treatment. Combination therapy also targets different cancer-inducing pathways, thus reducing the chances of developing resistance to treatment.
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
4.9K
Positive Regulator Molecules
5.5K
Mitotic cell division results in daughter cells that exactly resemble the parent cell. However, errors in the DNA replication or distribution of genetic material may lead to genetic mutations that may be passed down to every new cell formed from the resulting abnormal cell. Propagation of such mutant cells is restricted through checkpoint mechanisms present at different stages of the cell cycle. These checkpoints involve regulator molecules that either promote or demote cell cycle events.
5.5K
Factors Affecting Drug Response: Overview
2.0K
When it comes to infants and young children, they are typically administered smaller doses of medication in comparison to adults. This is primarily because their organ functions still need to fully develop, meaning their bodies are not as efficient at metabolizing or eliminating drugs. Additionally, their blood-brain barrier is more permeable than in adults. As a result, high concentrations of drugs can easily penetrate the central nervous system (CNS), potentially leading to neurological...
2.0K
Treatment Resistant Cancers
3.3K
Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
3.3K


