Dabrafenib
Generic Name: dabrafenib
Brand Names:
Tafinlar
11 DESCRIPTION Dabrafenib mesylate is a kinase inhibitor. The chemical name for dabrafenib mesylate is N-{3-[5-(2-amino-4-pyrimidinyl)-2-(1,1-dimethylethyl)-1,3-thiazol-4-yl]-2-fluorophenyl}-2,6-difluorobenzene sulfonamide, methanesulfonate salt. It has the molecular formula C 23 H 20 F 3 N 5 O 2 S 2 •CH 4 O 3 S and a molecular weight of 615.68 g/mol.
Overview
11 DESCRIPTION Dabrafenib mesylate is a kinase inhibitor. The chemical name for dabrafenib mesylate is N-{3-[5-(2-amino-4-pyrimidinyl)-2-(1,1-dimethylethyl)-1,3-thiazol-4-yl]-2-fluorophenyl}-2,6-difluorobenzene sulfonamide, methanesulfonate salt. It has the molecular formula C 23 H 20 F 3 N 5 O 2 S 2 •CH 4 O 3 S and a molecular weight of 615.68 g/mol.
Uses
1 INDICATIONS AND USAGE TAFINLAR is a kinase inhibitor indicated as a single agent for the treatment of patients with unresectable or metastatic melanoma with BRAF V600E mutation as detected by an FDA-approved test. ( 1.1 , 2.1 ) TAFINLAR is indicated, in combination with trametinib , for: the treatment of patients with unresectable or metastatic melanoma with BRAF V600E or V600K mutations as detected by an FDA-approved test. ( 1.2 , 2.1 ) the adjuvant treatment of patients with melanoma with BRAF V600E or V600K mutations, as detected by an FDA-approved test, and involvement of lymph node(s), following complete resection. ( 1.3 , 2.1 ) the treatment of patients with metastatic non-small cell lung cancer (NSCLC) with BRAF V600E mutation as detected by an FDA-approved test.
Dosage
2 DOSAGE AND ADMINISTRATION The recommended dosage of TAFINLAR in adult patients is 150 mg (two 75 mg capsules) orally twice daily. The recommended dosage for TAFINLAR in pediatric patients is based on body weight. Take TAFINLAR at least 1 hour before or 2 hours after a meal. ( 2 ) 2.1 Patient Selection Melanoma Confirm the presence of BRAF V600E mutation in tumor specimens prior to initiation of treatment with TAFINLAR as a single agent [see Warnings and Precautions (5.2), Clinical Studies (14.1)] . Confirm the presence of BRAF V600E or V600K mutation in tumor specimens prior to initiation of treatment with TAFINLAR and trametinib [see Warnings and Precautions (5.2), Clinical Studies (14.2, 14.3)] .
Side Effects
6 ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in the labeling: New Primary Malignancies [see Warnings and Precautions (5.1)] Tumor Promotion in BRAF Wild-Type Tumors [see Warnings and Precautions (5.2)] Hemorrhage [see Warnings and Precautions (5.3)] Cardiomyopathy [see Warnings and Precautions (5.4)] Uveitis [see Warnings and Precautions (5.5)] Serious Febrile Reactions [see Warnings and Precautions (5.6)] Serious Skin Toxicities [see Warnings and Precautions (5.7)] Hyperglycemia [see Warnings and Precautions (5.8)] Glucose-6-Phosphate Dehydrogenase Deficiency [see Warnings and Precautions (5.9)] Hemophagocytic Lymphohistiocytosis [see Warnings and Precautions (5.11)] There are additional adverse reactions associated with trametinib.
Interactions
7 DRUG INTERACTIONS Avoid concurrent administration of strong inhibitors of CYP3A4 or CYP2C8. ( 7.1 ) Concomitant use with agents that are sensitive substrates of CYP3A4, CYP2C8, CYP2C9, CYP2C19, or CYP2B6 may result in loss of efficacy of these agents. ( 7.2 ) 7.1 Effects of Other Drugs on TAFINLAR Strong inhibitors of CYP3A4 or CYP2C8 may increase the concentration of dabrafenib [see Clinical Pharmacology (12.3)] . Substitution of strong inhibitors of CYP3A4 or CYP2C8 is recommended during treatment with TAFINLAR. If concomitant use of strong inhibitors of CYP3A4 or CYP2C8 is unavoidable, monitor patients closely for adverse reactions when taking strong inhibitors.
Warnings
5 WARNINGS AND PRECAUTIONS New Primary Malignancies, Cutaneous and Non-Cutaneous : Can occur when TAFINLAR is administered as a single agent or with trametinib. Monitor patients for new malignancies prior to, or while on therapy, and following discontinuation of treatment. ( 5.1 , 2.4 ) Tumor Promotion in BRAF Wild-type Tumors : Increased cell proliferation can occur with BRAF inhibitors. ( 5.2 , 2.1 ) Hemorrhage : Major hemorrhagic events can occur in patients receiving TAFINLAR with trametinib. Monitor for signs and symptoms of bleeding. ( 5.3 ) Cardiomyopathy : Assess left ventricular ejection fraction (LVEF) before treatment with TAFINLAR and trametinib, after one month of treatment, then every 2 to 3 months thereafter. 4 CONTRAINDICATIONS None. None. ( 4 )
Pregnancy
8.1 Pregnancy Risk Summary Based on findings from animal reproduction studies and its mechanism of action [see Clinical Pharmacology (12.1)] , TAFINLAR can cause fetal harm when administered to a pregnant woman. There is insufficient data in pregnant women exposed to TAFINLAR to assess the risks. Dabrafenib was teratogenic and embryotoxic in rats at doses three times greater than the human exposure at the recommended adult clinical dose of 150 mg twice daily (see Data) . Advise pregnant women of the potential risk to a fetus. In the U.S.
Storage
16 HOW SUPPLIED/STORAGE AND HANDLING TAFINLAR Capsules: 50 mg capsules: Dark red capsule imprinted with ‘GS TEW’ and ‘50 mg’ available in bottles of 120 with child-resistant closures (NDC 0078-0682-66). Each bottle contains a silica gel desiccant. 75 mg capsules: Dark pink capsule imprinted with ‘GS LHF’ and ‘75 mg’ available in bottles of 120 with child-resistant closures (NDC 0078-0681-66).
Frequently Asked Questions
What is Dabrafenib used for?▼
1 INDICATIONS AND USAGE TAFINLAR is a kinase inhibitor indicated as a single agent for the treatment of patients with unresectable or metastatic melanoma with BRAF V600E mutation as detected by an FDA-approved test. ( 1.1 , 2.1 ) TAFINLAR is indicated, in combination with trametinib , for: the treatment of patients with unresectable or metastatic melanoma with BRAF V600E or V600K mutations as detected by an FDA-approved test. ( 1.2 , 2.1 ) the adjuvant treatment of patients with melanoma with BRAF V600E or V600K mutations, as detected by an FDA-approved test, and involvement of lymph node(s), following complete resection. ( 1.3 , 2.1 ) the treatment of patients with metastatic non-small cell lung cancer (NSCLC) with BRAF V600E mutation as detected by an FDA-approved test.
What are the side effects of Dabrafenib?▼
6 ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in the labeling: New Primary Malignancies [see Warnings and Precautions (5.1)] Tumor Promotion in BRAF Wild-Type Tumors [see Warnings and Precautions (5.2)] Hemorrhage [see Warnings and Precautions (5.3)] Cardiomyopathy [see Warnings and Precautions (5.4)] Uveitis [see Warnings and Precautions (5.5)] Serious Febrile Reactions [see Warnings and Precautions (5.6)] Serious Skin Toxicities [see Warnings and Precautions (5.7)] Hyperglycemia [see Warnings and Precautions (5.8)] Glucose-6-Phosphate Dehydrogenase Deficiency [see Warnings and Precautions (5.9)] Hemophagocytic Lymphohistiocytosis [see Warnings and Precautions (5.11)] There are additional adverse reactions associated with trametinib.
Can I take Dabrafenib during pregnancy?▼
8.1 Pregnancy Risk Summary Based on findings from animal reproduction studies and its mechanism of action [see Clinical Pharmacology (12.1)] , TAFINLAR can cause fetal harm when administered to a pregnant woman. There is insufficient data in pregnant women exposed to TAFINLAR to assess the risks. Dabrafenib was teratogenic and embryotoxic in rats at doses three times greater than the human exposure at the recommended adult clinical dose of 150 mg twice daily (see Data) . Advise pregnant women of the potential risk to a fetus. In the U.S.
What are the important warnings for Dabrafenib?▼
5 WARNINGS AND PRECAUTIONS New Primary Malignancies, Cutaneous and Non-Cutaneous : Can occur when TAFINLAR is administered as a single agent or with trametinib. Monitor patients for new malignancies prior to, or while on therapy, and following discontinuation of treatment. ( 5.1 , 2.4 ) Tumor Promotion in BRAF Wild-type Tumors : Increased cell proliferation can occur with BRAF inhibitors. ( 5.2 , 2.1 ) Hemorrhage : Major hemorrhagic events can occur in patients receiving TAFINLAR with trametinib. Monitor for signs and symptoms of bleeding. ( 5.3 ) Cardiomyopathy : Assess left ventricular ejection fraction (LVEF) before treatment with TAFINLAR and trametinib, after one month of treatment, then every 2 to 3 months thereafter. 4 CONTRAINDICATIONS None. None. ( 4 )
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Medical Disclaimer
This drug information is for educational purposes only and should not replace professional medical advice. Drug information is sourced from the FDA National Drug Code Directory and Structured Product Labeling. Always consult with a healthcare provider before starting, stopping, or changing any medication.