Genomics of primary chemoresistance and remission induction failure in pediatric and adult acute myeloid leukemia

BioRxiv : the Preprint Server for Biology
Fiona C BrownAlex Kentsis

Abstract

Despite intense efforts, the cure rates of children and adults with AML remain unsatisfactory in large part due to resistance to chemotherapy. Whilst cytogenetic risk stratification proved valuable in identifying causes of therapy failure and disease relapse, cytogenetically normal AML remains the most prevalent disease type, with significant heterogeneity of clinical outcomes, including primary chemoresistance. Using targeted sequencing of 670 genes recurrently mutated in hematologic malignancies, we investigated the genetic basis of primary chemotherapy resistance and remission induction failure of 107 primary cases obtained at diagnosis from children and adults with cytogenetically normal AML. Comparative analysis revealed mutations of SETBP1, ASXL1 and RELN to be significantly enriched at diagnosis in primary induction failure as compared to remission cases. In addition, this analysis revealed novel genomic alterations not previously described in AML, as well as distinct genes that are significantly overexpressed in therapy resistant AML. However, identified gene mutations were sufficient to explain only a minority of cases of primary induction failure. Thus, additional genetic or molecular mechanisms must cause primary che...Continue Reading

Related Concepts

ASXL1
Cytogenetics
Hematologic Neoplasms
Genome
Genes
Stratification
RELN gene
Adult Acute Myeloblastic Leukemia
Gene Mutation
Putative Polycomb Group Protein ASXL1

Related Feeds

BioRxiv & MedRxiv Preprints

BioRxiv and MedRxiv are the preprint servers for biology and health sciences respectively, operated by Cold Spring Harbor Laboratory. Here are the latest preprint articles (which are not peer-reviewed) from BioRxiv and MedRxiv.

AML: Role of LSD1 by CRISPR (Keystone)

Find the latest rersearrch on the ability of CRISPR-Cas9 mutagenesis to profile the interactions between lysine-specific histone demethylase 1 (LSD1) and chemical inhibitors in the context of acute myeloid leukemia (AML) here.

Acute Myeloid Leukemia

Acute myeloid leukemia (AML) is a clinically and genetically heterogeneous disease with approximately 20,000 cases per year in the United States. AML also accounts for 15-20% of all childhood acute leukemias, while it is responsible for more than half of the leukemic deaths in these patients. Here is the latest research on this disease.

Acute Myeloid Leukaemia & RNA

Acute myeloid leukaemia (AML) is a common hematological type of cancer. As the population ages, there has been a rise in the frequency of AML. RNA expression has been used to see if there are different genetic profiles that exist within AML and whether these may underpin the variations in survival rates. Here is the latest research on AML and RNA.