Cotellic (cobimetinib)

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Cotellic (cobimetinib)

How to buy Cotellic: You can order Cotellic (cobimetinib) via TheSocialMedwork if the drug has not been approved and/or is not available in the patient's country. TheSocialMedwork - helping patients and doctors access the latest approved medicines and at the lowest price possible worldwide.

Manufacturer Genentech
Disease Skin Cancer
Indication Unresectable or metastatic melanoma with a BRAF V600E or V600K mutation
Mode of Action Kinase inhibitor (chemotherapy)
Approval Status EMA approved (EU); FDA approved (USA); TGA approved (AUS)
Strength 20 mg

Who is cobimetinib for?

Cotellic (cobimetinib) is indicated in combination with vemurafenib for the treatment of patients with unresectable or metastatic melanoma with a BRAF V600E or V600K mutation. The presence of BRAF V600E or V600K mutation in tumour samples needs to be confirmed prior to initiation of treatment [1][2][3].

Recommended dose

Complete information about cobimetinib dosage and administration can be found here [4][2][3].
The standard dosage is:
  • 60 mg orally once daily for the first 21 days of each 28-day cycle until disease progression or unacceptable toxicity
  • Confirm the presence of BRAF V600E or V600K mutation in tumour sample prior to initiation of treatment
Consult your treating doctor for personalised dosing.

What is cobimetinib and how does it work?

Cobimetinib is a cancer medicine used to treat adults with unresectable or metastatic melanoma with a BRAF V600E or V600K Mutation.[1][2][3]

The active substance in Cotellic, cobimetinib, is a kinase inhibitor. In melanoma with the BRAF V600 mutation, an abnormal form of the protein BRAF is produced, which switches on a protein (MEK), involved in stimulating normal cell division. This encourages the cancer to develop by allowing uncontrolled division of the cancer cells. By blocking this protein cobimetinib slows down the growth and spread of the cancer. Cobimetinib is only given to patients whose melanoma is caused by the BRAF V600 mutation and must be used in combination with the BRAF inhibitor vemurafenib [1]. Vemurafenib is an anticancer medicine that has been widely approved (e.g. by FDA since 2011 [5], EMA since 2012 [6], and TGA since 2012 [7].

What is cobimetinib's approval status?

Cobimetinib was approved by:
  • FDA (USA) on November 10, 2015 [8]
  • EMA (EU) on November 20, 2015  [1]
  • TGA (AUS) on April 5, 2016 [3].
The approvals were based on a study (coBRIM) involving 495 patients with BRAF V600 positive unresectable locally advanced or metastatic melanoma. Participants received either vemurafenib plus placebo or vemurafenib plus cobimetinib. The evaluation was primarily based on the progression free survival (PFS). Secondary efficacy endpoints included overall survival (OS), objective response rate (ORR), and duration of response (DoR) [3][2][4]. The PFS is the length of time during and after the treatment of a disease, such as cancer, that a patient lives with the disease but it does not get worse [9]. The OS is the time from the start of the study to the death of the patient [10]. The ORR is the portion of patients with a tumour size reduction of a predefined amount for a minimum time period [10]. The DoR is the time from documentation of tumour response to disease progression [11].

Patients taking cobimetinib plus vemurafenib (N = 247) resulted in a median PFS of 5 months longer than those taking vemurafenib plus placebo (N = 248) (12.3 months (95 % CI 9.5, 13.4) vs. to 7.2 months (95% CI 5.6, 7.5) [4][2]). The median OS in the cobimetinib cohort was 22.3 months (95 % CI 20.3, Not Evaluable) vs 17.4 (CI 95 % 15.0, 19.8) [4][3]. The ORR was 69.6 % (95 % CI 63.5 %, 75.3 %) with cobimetinib and 50.0 % (95 % CI 43.6 %, 56.4 %) [4][2]without. The median DoR was 13 months (95 % CI 11.1, 16.6) [4][2]when cobimetinib was included in the treatment and 9.2 months (95 % CI 7.5, 12.8) [4][2]for patients that took vemurafenib plus placebo.
[1] EMA. Human Medicines: Cotellic (cobimetinib), 10/12/2015 (last update: 27/07/2016), cited on 16/03/2017.
[2] Summary of Product Characteristics [FDA]: Cotellic (cobimetinib), Genentech, Nov 2015.
[3] Summary of Product Characteristics [TGA]: Cotellic (cobimetinib), Roche Products Pty Ltd., Apr 2016.
[4] Summary of Product Characteristics [EMA]: Cotellic (cobimetinib), Roche Ltd., Nov 2015.
[5] Vemurafenib, (last updated: 01/06/2017), cited on 16/03/2017.
[6] EMA. Human Medicines: Zelboraf (vemurafenib), 19/03/2012 (last update: 30/03/2017), cited on 16/03/2017.
[7] Summary of Product Characteristics [TGA]: Zelboraf (vemurafenib), Roche Products Pty Ltd., Sep 2016.
[8] FDA News Release: FDA approves Cotellic as part of combination treatment for advanced melanoma. 10/11/2015.
[9] NIH National Cancer Institute: NCI Dictionary of Cancer Terms: progression-free survival. Cited on 16/03/2017
[10] Pazdur R. Endpoints for assessing drug activity in clinical trials. The Oncologist. 2008 Apr; 13(2):19–21.
[11] Efficacy endpoints in oncology clinical trials. Cited on 16/03/2017.

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