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Updated: Jan 25, 2026

An Organotypic High Throughput System for Characterization of Drug Sensitivity of Primary Multiple Myeloma Cells
Published on: July 15, 2015
Future of Personalized Therapy Targeting Aberrant Signaling Pathways in Multiple Myeloma
Faiz Anwer1, Kevin Mathew Gee2, Ahmad Iftikhar3
1Taussig Cancer Center, Department of Hematology, Medical Oncology, Cleveland Clinic, Cleveland, OH.
Abstract:
Multiple myeloma (MM) is a genetically complex disease. Identification of mutations and aberrant signaling pathways that contribute to the progression of MM and drug resistance has potential to lead to specific targets and personalized treatment. Aberrant signal pathways include RAS pathway activation due to RAS or BRAF mutations (targeted by vemurafenib alone or combined with cobimetinib), BCL-2 overexpression in t(11:14) (targeted by venetoclax), JAK2 pathway activation (targeted by ruxolitinib), NF-κB pathway activation (treated with DANFIN combined with bortezomib), MDM2 overexpression, and PI3K/mTOR pathway activation (targeted by BEZ235). Cyclin D1 (CCND1) and MYC are also emerging as key potential targets. In addition, histone deacetylase inhibitors are already in use for the treatment of MM in combination therapy, and targeted inhibition of FGFR3 (AZD4547) is effective in myeloma cells with t(4;14) translocation. Bromodomain and extra terminal (BET) protein antagonists decrease the expression of MYC and have displayed promising antimyeloma activity. A better understanding of the alterations in signaling pathways that promote MM progression will further inform the development of precision therapy for patients.
Insights
Understanding genetic mutations and signaling pathways in multiple myeloma (MM) can guide targeted therapies. Identifying these molecular drivers is key to developing personalized treatments and overcoming drug resistance in MM patients.
Area of Science:
- Oncology
- Genetics
- Molecular Biology
Background:
- Multiple myeloma (MM) is a complex hematologic malignancy characterized by genetic heterogeneity.
- Aberrant signaling pathways and specific mutations drive MM progression and treatment resistance.
Purpose of the Study:
- To identify key mutations and aberrant signaling pathways in multiple myeloma.
- To explore their potential as targets for personalized and effective MM therapies.
Main Methods:
- Review of current literature on genetic alterations and signaling pathways in MM.
- Analysis of targeted therapies based on identified molecular drivers.
Main Results:
- Key pathways implicated include RAS, BCL-2, JAK2, NF-κB, PI3K/mTOR, and MYC.
- Specific mutations (e.g., RAS, BRAF) and translocations (e.g., t(11:14), t(4;14)) are linked to pathway activation.
- Targeted agents like vemurafenib, cobimetinib, venetoclax, ruxolitinib, bortezomib, and BEZ235 show potential.
- Histone deacetylase inhibitors, FGFR3 inhibitors (AZD4547), and BET protein antagonists are also relevant.
Conclusions:
- Understanding MM's genetic complexity and signaling pathways is crucial for precision medicine.
- Targeting specific molecular alterations offers a promising strategy for improving MM treatment outcomes and overcoming resistance.
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