Cobimetinib
Cobimetinib is the MEK partner for vemurafenib, and the first drug approved for histiocytic neoplasms.
coBRIM (2015): PFS 12.3 vs 7.2 months added to vemurafenib in BRAF V600 melanoma. Also approved with atezolizumab and vemurafenib (IMspire150, 2020) and alone for histiocytic neoplasms (2022). Retinopathy, photosensitivity, CK elevation.
1.Binds MEK1/2 allosterically
- Route
- Oral
- Schedule
- 60 mg once daily for 21 days of each 28-day cycle, with vemurafenib
Source: www.accessdata.fda.gov/drugsatfda_docs/label/2022/206192s006lbl.pdf. Doses are for orientation; the current label governs.
- Medicare
- Part D (self-administered)
Oral, self-administered, so it is a Part D drug: covered through a stand-alone Part D plan or Medicare Advantage drug benefit, usually on the specialty tier with 25 to 33% coinsurance until the annual cap ($2,000 in 2025, $2,100 in 2026).
- Commercial insurance
- covered with prior authorisation
Covered for FDA-labelled and NCCN-listed uses, but almost always behind prior authorisation confirming diagnosis, biomarker and line of therapy; dispensed through a specialty pharmacy.
- Assistance programmes
- Genentech Access Solutions
- Genentech Patient Foundation — Free medicine for eligible patients regardless of insurance type.
- PAN Foundation — Disease-specific co-pay and premium funds; open and closed funds change monthly.
- HealthWell Foundation
- CancerCare Co-Payment Assistance Foundation
- Patient Advocate Foundation Co-Pay Relief
Part D out-of-pocket capped at $2,000 (2025) / $2,100 (2026). Medicare patients cannot use manufacturer co-pay cards; charity funds (PAN, HealthWell, CancerCare) and the Extra Help subsidy are the routes.
Sources: Medicare.gov: Drug coverage (Part D) · Medicare.gov: Costs for Medicare drug coverage (annual out-of-pocket cap). Not medical or financial advice; verify with your plan.
- Appraised for
- With vemurafenib for BRAF V600 mutation-positive melanoma
- NHS England
- Routinely funded for the appraised indication (or via managed access)
Sources: NICE TA414 · SMC advice: cobimetinib. Funding decisions are indication-specific and change monthly; verify with NICE and your treating team.
Approvals
| Region | Year | Indication |
|---|---|---|
| US | 2015 | BRAF V600 melanoma with vemurafenib |
| US | 2020 | With atezolizumab and vemurafenib in BRAF V600 melanoma |
| US | 2022 | Histiocytic neoplasms |
Trials
topRecruiting now (live from ClinicalTrials.gov)
Country and place are remembered in this browser only. A postcode is sent to OpenStreetMap's Nominatim service to find coordinates when you press the button; nothing else leaves your device.
Latest papers
topQuery for this drug: (TITLE:"Cobimetinib" OR ABSTRACT:"Cobimetinib" OR TITLE:"Cotellic" OR ABSTRACT:"Cotellic") AND (cancer OR tumor OR tumour OR oncology OR carcinoma OR lymphoma OR leukemia OR leukaemia OR myeloma OR sarcoma OR melanoma OR glioma). Results are unfiltered search hits about Cobimetinib, not a curated reading list.