Cobimetinib

Cobimetinib, sold under the brand name Cotellic, is an anti-cancer medication used in combination with vemurafenib (Zelboraf) alone or with both vemurafenib and atezolizumab (Tecentriq) to treat melanoma. Cobimetinib is a MEK inhibitor. Cotellic, Zelboraf, and Tecentriq are all marketed by Genentech.

Cobimetinib
Clinical data
Pronunciation/ˌkbɪˈmɛtɪnɪb/ KOH-bim-ET-i-nib
Trade namesCotellic
Other namesGDC-0973, XL-518
AHFS/Drugs.comMonograph
MedlinePlusa615057
License data
Pregnancy
category
  • AU: D
Routes of
administration
By mouth
ATC code
Legal status
Legal status
  • AU: S4 (Prescription only)
  • CA: ℞-only
  • UK: POM (Prescription only)
  • US: ℞-only
  • EU: Rx-only
  • In general: ℞ (Prescription only)
Pharmacokinetic data
Bioavailabilityreported from 28% to 46%
Protein binding95%
MetabolismIntestinal and low Liver clearance (mostly CYP3A4 oxidation and UGT2B7 glucuronidation)
Elimination half-life44 hours (mean)
ExcretionFeces (76–77%), urine (17.9–18%) (after oral and IV administration)
Identifiers
  • (S)-[3,4-Difluoro-2-(2-fluoro-4-iodophenylamino)phenyl] [3-hydroxy-3-(piperidin-2-yl)azetidin-1-yl] methanone
CAS Number
PubChem CID
IUPHAR/BPS
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
CompTox Dashboard (EPA)
Chemical and physical data
FormulaC21H21F3IN3O2
Molar mass531.318 g·mol−1
3D model (JSmol)
SMILES
  • C1CCN[C@@H](C1)C2(CN(C2)C(=O)C3=C(C(=C(C=C3)F)F)NC4=C(C=C(C=C4)I)F)O
  • InChI=1S/C21H21F3IN3O2/c22-14-6-5-13(19(18(14)24)27-16-7-4-12(25)9-15(16)23)20(29)28-10-21(30,11-28)17-3-1-2-8-26-17/h4-7,9,17,26-27,30H,1-3,8,10-11H2/t17-/m0/s1
  • Key:BSMCAPRUBJMWDF-KRWDZBQOSA-N

The most common side effects include diarrhea, rash, nausea (feeling sick), vomiting, pyrexia (fever), photosensitivity (light sensitivity) reaction, abnormal results for certain liver function tests (increased levels of alanine aminotransferase, aspartate aminotransferase) and abnormal results for an enzyme related to muscle breakdown (creatine phosphokinase).

Cobimetinib was approved for medical use in the United States in November 2015.

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