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Potentiation of Anticancer Antibody Efficacy by Antineoplastic Drugs: Detection of Antibody-drug Synergism Using the Combination Index Equation
Published on: January 19, 2019
Is the focus moving toward a combination of targeted drugs?
1Virginia Commonwealth University/Massey Cancer Center, 401 College Street, PO Box 980035, Richmond, VA 23298-0035, USA. stgrant@vcu.edu
Abstract:
The concept of combining targeted agents for the treatment of acute myeloid leukemia (AML) is a relatively new but potentially promising area of investigation. A number of targeted agents may have limited single-agent activity but could show significant promise when used in conjunction with other types of similar compounds. Combinations of targeted agents may effectively interrupt multiple pathways in either a linear or parallel fashion. There are currently numerous combination regimens under investigation at either the preclinical or clinical levels, including histone deacetylase (HDAC) and CDK inhibitors; HDAC and proteasome inhibitors; HDAC and NF-kappaB (IKKbeta) inhibitors; CHK1 and MEK1/2 inhibitors; and BCL-2 antagonists and CDK inhibitors. Although combinations of targeted agents will not displace conventional cytotoxic regimens in AML or related disorders in the foreseeable future, these combinations clearly warrant further attention.
Insights
Combining targeted agents offers a promising new strategy for acute myeloid leukemia (AML) treatment. These combinations may overcome limited single-agent efficacy by interrupting multiple cancer pathways.
Area of Science:
- Hematology
- Oncology
- Pharmacology
Background:
- Acute myeloid leukemia (AML) treatment often involves conventional cytotoxic chemotherapy.
- Targeted agents show potential but may have limited single-agent activity.
- Combining targeted agents could overcome resistance and enhance efficacy.
Purpose of the Study:
- To explore the potential of combination targeted therapy in AML.
- To review current preclinical and clinical investigations of targeted agent combinations.
- To assess the future role of targeted combinations in AML treatment.
Main Methods:
- Review of preclinical and clinical studies investigating targeted agent combinations in AML.
- Identification of various targeted agent classes used in combination regimens.
- Analysis of potential mechanisms of action for these combinations.
Main Results:
- Multiple combination regimens are under investigation, including HDAC and CDK inhibitors, HDAC and proteasome inhibitors, HDAC and NF-kappaB inhibitors, CHK1 and MEK1/2 inhibitors, and BCL-2 antagonists and CDK inhibitors.
- Combinations can interrupt multiple signaling pathways in AML cells.
- These combinations show promise for enhancing therapeutic outcomes.
Conclusions:
- Combination targeted therapy is a developing and promising strategy for AML.
- While not replacing conventional chemotherapy soon, these combinations warrant further investigation.
- Targeted combinations hold potential for improving AML treatment paradigms.
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