Integrated Multimodal Genomic Analyses Reveal Novel Mechanisms of Glucocorticoid Resistance in Acute Lymphoblastic Leukemia

<p>Acute lymphoblastic leukemia (ALL) is the most common childhood cancer. Much has been discovered in recent decades regarding ALL biology, and the outcome of patients with ALL has vastly improved, especially in pediatric ALL patients. Despite very promising overall cure rates, patients who relapse have a greatly decreased prognosis with survival rates ranging from 30-60%. These numbers stand to improve even further with new targeted therapies that seek to improve or maintain cure rates while reducing treatment related toxicities which affect patients both acutely and chronically. Glucocorticoids (GCs) are essential components of modern chemotherapeutic intervention for ALL. Resistance to glucocorticoids is an important factor in determining early treatment response and overall patient survival. Reduction of glucocorticoid induced toxicities, such as osteonecrosis, can significantly affect patient quality of life and are associated with high dose glucocorticoid treatment in pediatric patients. Both endogenous and exogenous glucocorticoids exert their mechanism of action through various pleiotropic effects that regulate numerous cellular functions and can cause selective cytotoxicity in lymphoid malignancies. The complex mechanism of action of glucocorticoids is evident in the number of diverse clinically relevant molecular pathways that have been previously associated with resistance to glucocorticoids in ALL.The identification of genomic and epigenomic mechanisms of glucocorticoid resistance are important for improving ALL treatment outcomes. We used an agnostic genome-wide method to interrogate multiple types of genomic information (mRNA and miRNA expression, DNA methylation, SNPs, CNAs and SNVs/Indels) in primary human acute lymphoblastic leuke</p>

Name thesis:degree_name

Doctor of Philosophy (PhD)

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Biomedical Sciences

Year dc:date.available

2020

Author dc:creator

• Autry, Robert J.

Contributors dc:contributor

• William E. Evans, PharmD

• Drug Resistance
• Genomics
• Glucocorticoids
• Leukemia
• Pharmacogenomics
• Medical Pharmacology
• Medicine and Health Sciences

Repository record dc:identifier

https://dc.uthsc.edu/dissertations/516

OAI identifier oai:identifier

oai:dc.uthsc.edu:dissertations-1516