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Therapy Name | Palbociclib + Vemurafenib |
Synonyms | |
Therapy Description |
Ibrance (palbociclib) is a selective inhibitor of cyclin-dependent kinase 4 (CDK4) and 6 (CDK6) (PMID: 19874578). Ibrance (palbociclib) is approved, in combination with Femara (letrozole), in ER positive, HER2 negative metastatic breast cancer (FDA.gov). |
Drug Name | Trade Name | Synonyms | Drug Classes | Drug Description |
---|---|---|---|---|
Palbociclib | Ibrance | PD0332991|PD-0332991 | CDK4/6 Inhibitor 14 | Ibrance (palbociclib) is a selective inhibitor of cyclin-dependent kinase 4 (CDK4) and 6 (CDK6) (PMID: 19874578). Ibrance (palbociclib) is approved in combination with an aromatase inhibitor in postmenopausal patients with ER-positive, ERBB2 (HER2)-negative metastatic breast cancer, and in combination with Faslodex (fulvestrant) in patients with ER-positive, ERBB2 (HER2)-negative metastatic breast cancer (FDA.gov). |
Vemurafenib | Zelboraf | RO5185426|PLX4032 | RAF Inhibitor (Pan) 28 | Zelboraf (vemurafenib) inhibits BRAF V600E, wild-type BRAF, ARAF, and CRAF (PMID: 20179705), which may result in an inhibition of the MAPK signaling pathway resulting in a reduction of tumor cell proliferation (PMID: 20823850). Zelboraf (vemurafenib) is FDA approved for BRAF V600E-mutant melanoma and for BRAF V600-positive Erdheim-Chester disease (FDA.gov). |
Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
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BRAF V600E/K CDKN2A loss RB1 pos | melanoma | predicted - sensitive | Palbociclib + Vemurafenib | Phase Ib/II | Actionable | In a phase I/II trial, Ibrance (palbociclib) plus Zelboraf (vemurafenib) was safe and resulted in an overall response rate (ORR) of 26.7% (4/15), disease control rate (DCR) of 80% (12/15), and progression-free survival (PFS) of 2.8 mo in metastatic melanoma patients with prior BRAF inhibitor treatment and BRAF V600E/K, CDKN2A loss, and RB1 expression, and an ORR of 27.8% (5/18), DCR of 83.3% (10/18) and 2.8 mo PFS when combined with pts without prior BRAF inhibitor treatment (PMID: 33947696; NCT02202200). | 33947696 |
BRAF V600E CDKN2A loss CHEK2 dec exp RB1 pos | melanoma | predicted - resistant | Palbociclib + Vemurafenib | Preclinical - Cell culture | Actionable | In a preclinical study, Ibrance (palbociclib) and Zelboraf (vemurafenib) combination therapy in a melanoma cell line harboring BRAF V600E, CDKN2A loss, RB1 expression, and decreased expression of CHEK2 via siRNA resulted in increased cell proliferation and p-ERK levels compared to treated cells without decreased expression of CHEK2 in culture (PMID: 33947696). | 33947696 |
Clinical Trial | Phase | Therapies | Title | Recruitment Status | Covered Countries | Other Countries |
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