期刊
JOURNAL OF HEMATOLOGY & ONCOLOGY
卷 11, 期 -, 页码 -出版社
BMC
DOI: 10.1186/s13045-018-0589-1
关键词
Immune checkpoint inhibitors; PD-L1; PD-1; Multiple myeloma; Histone deacetylase; Bromodomain and extraterminal inhibitors; Oncolytic reovirus; MicroRNA
资金
- Cancer Research Society
- Leukemia and Lymphoma Society of Canada
- Princess Margaret Cancer Centre
Even with recent advances in therapy regimen, multiple myeloma patients commonly develop drug resistance and relapse. The relevance of targeting the PD-1/PD-L1 axis has been demonstrated in pre-clinical models. Monotherapy with PD-1 inhibitors produced disappointing results, but combinations with other drugs used in the treatment of multiple myeloma seemed promising, and clinical trials are ongoing. However, there have recently been concerns about the safety of PD-1 and PD-L1 inhibitors combined with immunomodulators in the treatment of multiple myeloma, and several trials have been suspended. There is therefore a need for alternative combinations of drugs or different approaches to target this pathway. Protein expression of PD-L1 on cancer cells, including in multiple myeloma, has been associated with intrinsic aggressive features independent of immune evasion mechanisms, thereby providing a rationale for the adoption of new strategies directly targeting PD-L1 protein expression. Drugs modulating the transcriptional and post-transcriptional regulation of PD-L1 could represent new therapeutic strategies for the treatment of multiple myeloma, help potentiate the action of other drugs or be combined to PD1/PD-L1 inhibitors in order to avoid the potentially problematic combination with immunomodulators. This review will focus on the pathophysiology of PD-L1 expression in multiple myeloma and drugs that have been shown to modulate this expression.
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