Overview
11 DESCRIPTION Trabectedin is an alkylating drug with the chemical name (1' R ,6 R ,6a R ,7 R ,13 S ,14 S ,16 R )-5-(acetyloxy)-3',4',6,6a,7,13,14,16-octahydro-6',8,14-trihydroxy-7',9-dimethoxy-4,10,23-trimethyl-spiro[6,16-(epithiopropanoxymethano)-7,13-imino-12 H -1,3-dioxolo[7,8]isoquino[3,2- b ][3]benzazocine-20,1'(2' H )-isoquinolin]-19-one. The molecular formula is C 39 H 43 N 3 O 11 S.
Mechanism of Action
12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Trabectedin is an alkylating drug that binds guanine residues in the minor groove of DNA, forming adducts and resulting in a bending of the DNA helix towards the major groove. Adduct formation triggers a cascade of events that can affect the subsequent activity of DNA binding proteins, including some transcription factors, and DNA repair pathways, resulting in perturbation of the cell cycle and eventual cell death. 12.2 Pharmacodynamics Cardiac Electrophysiology The effect of trabectedin on the QT/QTc interval was evaluated in 75 patients who received placebo on day 1 and trabectedin (1.3 mg/m 2 ) as a 3-hour intravenous infusion on day 2.
Indications
- 1 INDICATIONS AND USAGE YONDELIS ® is indicated for the treatment of adult patients with unresectable or metastatic liposarcoma or leiomyosarcoma who received a prior anthracycline-containing regimen [see Clinical Studies (14) ] . YONDELIS is an alkylating drug indicated for the treatment of adult patients with unresectable or metastatic liposarcoma or leiomyosarcoma who received a prior anthracycline-containing regimen ( 1 )
Common Doses
- 1.5 mg
- 20 mg
- 0.9 mg
- 1.0 mg
Dosage
2 DOSAGE AND ADMINISTRATION Administer at 1.5 mg/m 2 as a 24-hour intravenous infusion, every 3 weeks through a central venous line ( 2.1 , 2.6 ) Premedication: dexamethasone 20 mg intravenously, 30 min before each infusion ( 2.3 ) Hepatic Impairment: Administer at 0.9 mg/m 2 as a 24-hour intravenous infusion, every 3 weeks through a central venous line in patients with moderate hepatic impairment ( 2.2 ) 2.1 Recommended Dosage The recommended dose is 1.
Contraindications
- 4 CONTRAINDICATIONS YONDELIS is contraindicated in patients with known severe hypersensitivity, including anaphylaxis, to trabectedin. Known hypersensitivity to trabectedin ( 4 )
Side Effects
- 6 ADVERSE REACTIONS The following adverse reactions are discussed in more detail in other sections of the labeling: Anaphylaxis [see Contraindications (4) ] Neutropenic Sepsis [see Warnings and Precautions (5.1) ] Rhabdomyolysis [see Warnings and Precautions (5.2) ] Hepatotoxicity [see Warnings and Precautions (5.3) ] Cardiomyopathy [see Warnings and Precautions (5.4) ] Capillary Leak Syndrome [see Warnings and Precautions (5.5) ] Extravasation Resulting in Tissue Necrosis [see Warnings and Precautions (5.
Interactions
- 7 DRUG INTERACTIONS CYP3A inhibitors: Avoid concomitant strong CYP3A inhibitors ( 7.1 ) CYP3A inducers: Avoid concomitant strong CYP3A inducers ( 7.2 ) 7.1 Effect of Cytochrome CYP3A Inhibitors Coadministration of YONDELIS with ketoconazole, a strong CYP3A inhibitor, increased systemic exposure of trabectedin by 66%. Avoid using strong CYP3A inhibitors (e.g., oral ketoconazole, itraconazole, posaconazole, voriconazole, clarithromycin, telithromycin, indinavir, lopinavir, ritonavir, boceprevir, nelfinavir, saquinavir, telaprevir, nefazodone, conivaptan) in patients taking YONDELIS.