长期阅读的急性髓性白血病的表观基因组诊断和预后
Jatinder Lamba1, Francisco Marchi1, Marieke Landwehr1
1University of Florida.
Research square
|December 23, 2024
概括
我们使用DNA甲基化数据开发了急性白血病甲基瘤图谱 (ALMA) 和AML表观风险分类器. 这些工具可以准确诊断急性白血病亚型,并预测患者的生存率,改善癌症管理.
科学领域:
- 血液学 血液学 血液学
- 在瘤学瘤学.
- 基因组学就是基因组学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 急性髓性白血病 (AML) 由于其侵略性,多样化的亚型和不充分的风险分层而带来挑战.
- 目前针对急性白血病的诊断和预后工具需要加强,以解决亚型异质性并改善患者的治疗结果.
研究的目的:
- 开发一种针对急性白血病的综合性DNA甲基化图谱,使其能够准确地分类.
- 创建一个强大的AML预后分类器来预测整体存活率.
- 建立一种新的,集成的测序协议,用于同时进行急性白血病的基因组和表观基因组分析.
主要方法:
- 来自11个队列的3314名患者的DNA甲基化数据的协调.
- 针对世卫组织2022年亚型分类的急性白血病甲基瘤图谱 (ALMA) 的开发.
- 使用EWAS-CoxPH-LASSO模型创建了AML表观基因风险分类器和38CpGAML签名.
- 使用长读技术实现全基因组和表观基因组测序的样本到结果协议.
主要成果:
- 在预测27种急性白血病亚型方面,ALMA取得了很高的准确性 (96.3%的发现率,90.1%的验证率).
- 在AML患者中,AML表观风险分类器显著预测了AML患者的整体存活率 (HR=4.40).
- 38CpG AML 标记也显示出对整体存活率 (HR=3.84) 的强有力的预后价值.
- 这种新型的测序协议准确地预测了从前性收集的样本中诊断和预后.
结论:
- 在急性白血病中,DNA甲基化分析为准确诊断和风险分层提供了一种强大的方法.
- ALMA和AML表观遗传风险工具代表了急性髓性白血病管理的重大进展.
- 通过长读序列的综合表观基因和基因组分析为急性白血病研究和临床应用提供了一个新的范式.
更多相关视频
09:57Comprehensive Protocol to Sample and Process Bone Marrow for Measuring Measurable Residual Disease and Leukemic Stem Cells in Acute Myeloid Leukemia
Published on: March 5, 2018
29.2K
09:01Flow Cytometry to Estimate Leukemia Stem Cells in Primary Acute Myeloid Leukemia and in Patient-derived-xenografts, at Diagnosis and Follow Up
Published on: March 26, 2018
13.9K
相关概念视频
Karyotyping
Describing the number and physical features of chromosomes can reveal abnormalities that underlie genetic diseases. This description is facilitated by special staining techniques that produce a particular banding pattern on each chromosome. State-of-the-art techniques make this approach even more powerful, enabling the detection of individual genes that cause disease.A Simple Chromosome Staining Technique Provides Valuable Scientific InsightSome genetic diseases can be detected by looking at...
Genome-wide Association Studies-GWAS
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...
Bone Marrow Sampling and Transplants
Bone marrow transplant is a potential cure for several diseases, including cancer and specific genetic disorders. Notably, this procedure is applicable for patients suffering from aplastic anemia, certain types of leukemia, severe combined immunodeficiency disease (SCID), Hodgkin's disease, non-Hodgkin's lymphoma, multiple myeloma, thalassemia, sickle-cell disease, and certain cancers.
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy the...
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy the...
