Substance
ID:413
Names and Identifiers
IUPAC name
N-(3-ethynylphenyl)-6,7-bis(2-methoxyethoxy)quinazolin-4-amine
Synonyms
OSI-774erlotinibErlotinib
Brand Name
Tarceva
IUPAC Traditional name
@erlotinib
Properties
Physical Property
Hydrophobicity(logP)
2.7
Solubility
Very slightly soluble (hydrochloride salt - maximal solubility of approximately 0.4 mg/mL occurs at a pH of approximately 2)
Molecule Details
Drug Groups
approved; investigational
Description
Erlotinib hydrochloride (trade name Tarceva, Genentech/OSIP, originally coded as OSI-774) is a drug used to treat non-small cell lung cancer, pancreatic cancer and several other types of cancer.
Similar to gefitinib, erlotinib specifically targets the epidermal growth factor receptor (EGFR) tyrosine kinase. It binds in a reversible fashion to the adenosine triphosphate (ATP) binding site of the receptor. Erlotinib has recently been shown to be a potent inhibitor of JAK2V617F activity. JAK2V617F is a mutant of tyrosine kinase JAK2, is found in most patients with polycythemia vera (PV) and a substantial proportion of patients with idiopathic myelofibrosis or essential thrombocythemia. The study suggests that erlotinib may be used for treatment of JAK2V617F-positive PV and other myeloproliferative disorders.
Similar to gefitinib, erlotinib specifically targets the epidermal growth factor receptor (EGFR) tyrosine kinase. It binds in a reversible fashion to the adenosine triphosphate (ATP) binding site of the receptor. Erlotinib has recently been shown to be a potent inhibitor of JAK2V617F activity. JAK2V617F is a mutant of tyrosine kinase JAK2, is found in most patients with polycythemia vera (PV) and a substantial proportion of patients with idiopathic myelofibrosis or essential thrombocythemia. The study suggests that erlotinib may be used for treatment of JAK2V617F-positive PV and other myeloproliferative disorders.
Indication
For the treatment of patients with locally advanced or metastatic non-small cell lung cancer after failure of at least one prior chemotherapy regimen. Also for use, in combination with gemcitabine, as the first-line treatment of patients with locally advanced, unresectable or metastatic pancreatic cancer.
Pharmacology
Erlotinib is a Human Epidermal Growth Factor Receptor Type 1/Epidermal Growth Factor Receptor (HER1/EGFR) tyrosine kinase inhibitor.
Toxicity
Symptoms of overdose include diarrhea, rash, and liver transaminase elevation.
Affected Organisms
Humans and other mammals
Biotransformation
In vitro assays of cytochrome P450 metabolism showed that erlotinib is metabolized primarily by CYP3A4 and to a lesser extent by CYP1A2, and the extrahepatic isoform CYP1A1.
Absorption
Erlotinib is about 60% absorbed after oral administration and its bioavailability is substantially increased by food to almost 100%.
Half Life
Median half-life of 36.2 hours.
Protein Binding
93% protein bound to albumin and alpha-1 acid glycoprotein (AAG)
References
•
Raymond E, Faivre S, Armand JP: Epidermal growth factor receptor tyrosine kinase as a target for anticancer therapy. Drugs. 2000;60 Suppl 1:15-23; discussion 41-2.
[Pubmed]
•
Li Z, Xu M, Xing S, Ho WT, Ishii T, Li Q, Fu X, Zhao ZJ: Erlotinib effectively inhibits JAK2V617F activity and polycythemia vera cell growth. J Biol Chem. 2007 Feb 9;282(6):3428-32. Epub 2006 Dec 18.
[Pubmed]
•
Dudek AZ, Kmak KL, Koopmeiners J, Keshtgarpour M: Skin rash and bronchoalveolar histology correlates with clinical benefit in patients treated with gefitinib as a therapy for previously treated advanced or metastatic non-small cell lung cancer. Lung Cancer. 2006 Jan;51(1):89-96. Epub 2005 Nov 14.
[Pubmed]
•
Jones HE, Goddard L, Gee JM, Hiscox S, Rubini M, Barrow D, Knowlden JM, Williams S, Wakeling AE, Nicholson RI: Insulin-like growth factor-I receptor signalling and acquired resistance to gefitinib (ZD1839; Iressa) in human breast and prostate cancer cells. Endocr Relat Cancer. 2004 Dec;11(4):793-814.
[Pubmed]
•
Blum G, Gazit A, Levitzki A: Substrate competitive inhibitors of IGF-1 receptor kinase. Biochemistry. 2000 Dec 26;39(51):15705-12.
[Pubmed]
External Links
Molecular Spectra
No Data Available
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References
• Dudek AZ, Kmak KL, Koopmeiners J, Keshtgarpour M: Skin rash and bronchoalveolar histology correlates with clinical benefit in patients treated with gefitinib as a therapy for previously treated advanced or metastatic non-small cell lung cancer. Lung Cancer. 2006 Jan;51(1):89-96. Epub 2005 Nov 14. Pubmed
• Raymond E, Faivre S, Armand JP: Epidermal growth factor receptor tyrosine kinase as a target for anticancer therapy. Drugs. 2000;60 Suppl 1:15-23; discussion 41-2. Pubmed
• Li Z, Xu M, Xing S, Ho WT, Ishii T, Li Q, Fu X, Zhao ZJ: Erlotinib effectively inhibits JAK2V617F activity and polycythemia vera cell growth. J Biol Chem. 2007 Feb 9;282(6):3428-32. Epub 2006 Dec 18. Pubmed
• Jones HE, Goddard L, Gee JM, Hiscox S, Rubini M, Barrow D, Knowlden JM, Williams S, Wakeling AE, Nicholson RI: Insulin-like growth factor-I receptor signalling and acquired resistance to gefitinib (ZD1839; Iressa) in human breast and prostate cancer cells. Endocr Relat Cancer. 2004 Dec;11(4):793-814. Pubmed
• Blum G, Gazit A, Levitzki A: Substrate competitive inhibitors of IGF-1 receptor kinase. Biochemistry. 2000 Dec 26;39(51):15705-12. Pubmed