TEPADINA
THIOTEPA
Indications and usage 1 INDICATIONS AND USAGE TEPADINA (thiotepa) is an alkylating drug indicated: To reduce the risk of graft rejection when used in conjunction with high-dose busulfan and cyclophosphamide as a preparative regimen for allogeneic hematopoietic progenitor (stem) cell transplantation (HSCT) for pediatric patients with class 3 beta-thalassemia. (1.1 , 14) For treatment of adenocarcinoma of the breast or ovary. (1.2) For controlling intracavitary effusions secondary to diffuse or localized neoplastic diseases of various serosal cavities. (1.3) For treatment of superficial papillary carcinoma of the urinary bladder. (1.4) 1.1 Class 3 Beta-Thalassemia TEPADINA is indicated to reduce the risk of graft rejection when used in conjunction with high-dose busulfan and cyclophosphamide as a preparative regimen for allogeneic hematopoietic progenitor (stem) cell transplantation (HSCT) for pediatric patients with class 3 beta-thalassemia [see Clinical Studies ( 14 ) ] . 1.2 Adenocarcinoma of the Breast or Ovary TEPADINA is indicated for treatment of adenocarcinoma of the breast or ovary. 1.3 Malignant Effusions TEPADINA is indicated for controlling intracavitary effusions secondary to diffuse or localized neoplastic diseases of various serosal cavities. 1.4 Superficial Papillary Carcinoma of the Urinary Bladder TEPADINA is indicated for treatment of superficial papillary carcinoma of the urinary bladder.
Dosage and administration 2 DOSAGE AND ADMINISTRATION The recommended dosage of TEPADINA for class 3 beta-thalassemia is two administrations of 5 mg/kg given by intravenous infusion approximately 12 hours apart on Day -6 before allogeneic HSCT in conjunction with high-dose busulfan and cyclophosphamide. (2.1) The recommended dosage of TEPADINA for treatment of adenocarcinoma of the breast or ovary is 0.3 mg/kg to 0.4 mg/kg by intravenous infusion. (2.1) The recommended dosage of TEPADINA for treatment of malignant effusions is 0.6 mg/kg to 0.8 mg/kg intracavitary. (2.1) The recommended dosage of TEPADINA for treatment of superficial papillary carcinoma of the urinary bladder is 60 mg in 30 mL to 60 mL of 0.9% Sodium Chloride Injection into the bladder by catheter. (2.1) See Full Prescribing Information for preparation and administration instructions. (2.2 , 2.3) 2.1 Recommended Dosage Class 3 Beta-Thalassemia The recommended dosage of TEPADINA in pediatric patients is two administrations of 5 mg/kg given by intravenous infusion approximately 12 hours apart on Day -6 before allogeneic HSCT in conjunction with high-dose busulfan and cyclophosphamide as outlined in Table 1.
Structured Monograph
Clinical summary
Indications and usage 1 INDICATIONS AND USAGE TEPADINA (thiotepa) is an alkylating drug indicated: To reduce the risk of graft rejection when used in conjunction with high-dose busulfan and cyclophosphamide as a preparative regimen for allogeneic hematopoietic progenitor (stem) cell transplantation (HSCT) for pediatric patients with class 3 beta-thalassemia. (1.1 , 14) For treatment of adenocarcinoma of the breast or ovary. (1.2) For controlling intracavitary effusions secondary to diffuse or localized neoplastic diseases of various serosal cavities. (1.3) For treatment of superficial papillary carcinoma of the urinary bladder. (1.4) 1.1 Class 3 Beta-Thalassemia TEPADINA is indicated to reduce the risk of graft rejection when used in conjunction with high-dose busulfan and cyclophosphamide as a preparative regimen for allogeneic hematopoietic progenitor (stem) cell transplantation (HSCT) for pediatric patients with class 3 beta-thalassemia [see Clinical Studies ( 14 ) ] . 1.2 Adenocarcinoma of the Breast or Ovary TEPADINA is indicated for treatment of adenocarcinoma of the breast or ovary. 1.3 Malignant Effusions TEPADINA is indicated for controlling intracavitary effusions secondary to diffuse or localized neoplastic diseases of various serosal cavities. 1.4 Superficial Papillary Carcinoma of the Urinary Bladder TEPADINA is indicated for treatment of superficial papillary carcinoma of the urinary bladder. Dosage and administration 2 DOSAGE AND ADMINISTRATION The recommended dosage of TEPADINA for class 3 beta-thalassemia is two administrations of 5 mg/kg given by intravenous infusion approximately 12 hours apart on Day -6 before allogeneic HSCT in conjunction with high-dose busulfan and cyclophosphamide. (2.1) The recommended dosage of TEPADINA for treatment of adenocarcinoma of the breast or ovary is 0.3 mg/kg to 0.4 mg/kg by intravenous infusion. (2.1) The recommended dosage of TEPADINA for treatment of malignant effusions is 0.6 mg/kg to 0.8 mg/kg intracavitary. (2.1) The recommended dosage of TEPADINA for treatment of superficial papillary carcinoma of the urinary bladder is 60 mg in 30 mL to 60 mL of 0.9% Sodium Chloride Injection into the bladder by catheter. (2.1) See Full Prescribing Information for preparation and administration instructions. (2.2 , 2.3) 2.1 Recommended Dosage Class 3 Beta-Thalassemia The recommended dosage of TEPADINA in pediatric patients is two administrations of 5 mg/kg given by intravenous infusion approximately 12 hours apart on Day -6 before allogeneic HSCT in conjunction with high-dose busulfan and cyclophosphamide as outlined in Table 1. See Prescribing Information for cyclophosphamide and busulfan for information on these drugs. Table 1: Dosage Regimen For Allogeneic HSCT In Pediatric Patients With Class 3 Beta-Thalassemia Treatment Day prior to transplantation Day ‑10 Day ‑9 Day ‑8 Day ‑7 Day ‑6 Day ‑5 Day ‑4 Day ‑3 Day ‑2 Day ‑1 Day 0 Busulfan intravenous weight-based dose * ▲ ▲ ▲ ▲ TEPADINA intravenous 5 mg/kg twice ▲ Cyclophosphamide intravenous 40 mg/kg/day ▲ ▲ ▲ ▲ Stem cell Infusion ▲ *Busulfan intravenous weight-based dose: 1 mg/kg every 6 hours for patients less than 9 kg; 1.2 mg/kg every 6 hours for patients 9 kg to 16 kg; 1.1 mg/kg every 6 hours for patients 16.1 kg to 23 kg; 0.95 mg/kg every 6 hours for patients 23.1 kg to 34 kg; 0.8 mg/kg every 6 hours for patients more than 34 kg. Infuse TEPADINA via a central venous catheter over 3 hours using an infusion set equipped with a 0.2 micron in-line filter. Prior to and following each infusion, flush the catheter with approximately 5 mL of 0.9% Sodium Chloride Injection. TEPADINA is excreted through the skin of patients receiving high-dose therapy. Take precautions to prevent skin toxicity [ see Warnings and Precautions ( 5.3 ) ] . Adenocarcinoma of the Breast or Ovary The recommended dosage of TEPADINA for treatment of adenocarcinoma of the breast or ovary is 0.3 mg/kg to 0.4 mg/kg by intravenous infusion. Doses should be given at 1 to 4 week intervals. Initially the higher dose in the given range is commonly administered. The maintenance dose should be adjusted weekly on the basis of pre-treatment control blood counts and subsequent blood counts. Maintenance dosages should not be administered more frequently than weekly. Malignant Effusions The recommended dosage of TEPADINA for treatment of malignant effusions is 0.6 mg/kg to 0.8 mg/kg intracavitary. Administration is usually effected through the same tubing which is used to remove the fluid from the cavity involved. Doses should be given at 1 to 4 week intervals. Initially the higher dose in the given range is commonly administered. The maintenance dose should be adjusted weekly on the basis of pre-treatment control blood counts and subsequent blood counts. Maintenance dosages should not be administered more frequently than weekly. Superficial Papillary Carcinoma of the Urinary Bladder The recommended dosage of TEPADINA for treatment of superficial papillary
Boxed Warning
WARNING: SEVERE MYELOSUPPRESSION and CARCINOGENICITY TEPADINA may cause severe marrow suppression, and high doses may cause marrow ablation with resulting infection or bleeding. Monitor hematologic laboratory parameters. Hematopoietic progenitor (stem) cell transplantation (HSCT) is required to prevent potentially fatal complications of the prolonged myelosuppression after high doses of TEPADINA [see Warnings and Precautions (5.1) ] TEPADINA should be considered potentially carcinogenic in humans [see Warnings and Precautions (5.7) ] WARNING: SEVERE MYELOSUPPRESSION and CARCINOGENICITY See full prescribing information for complete boxed warning. May cause severe marrow suppression or ablation with resulting infection or bleeding. Monitor hematologic laboratory parameters. (5.1) Potentially carcinogenic in humans. (5.7)
Monitoring
- • 5 WARNINGS AND PRECAUTIONS Cutaneous toxicity: Cleanse skin at least twice daily through 48 hours after the last dose of TEPADINA.
- • (5.3) Embryo-Fetal toxicity: Can cause fetal harm.
- • Advise females of reproductive potential and males with female partners of reproductive potential of the potential risk to a fetus and to use effective contraception.
- • (5.8) 5.1 Myelosuppression The consequence of treatment with high doses of TEPADINA together with other chemotherapy at the recommended dose and schedule in the preparative regimen for class 3 beta- thalassemia is profound myelosuppression occurring in all patients.
Interaction Notes
- • 7 DRUG INTERACTIONS 7.1 Effect of Cytochrome CYP3A Inhibitors and Inducers In vitro studies suggest that thiotepa is metabolized by CYP3A4 and CYP2B6 to its active metabolite TEPA.
- • Avoid co-administration of strong CYP3A4 inhibitors (e.g., itraconazole, clarithromycin, ritonavir) and strong CYP3A4 inducers (e.g., rifampin, phenytoin) with TEPADINA due to the potential effects on efficacy and toxicity [see Clinical Pharmacology ( 12.3 ) ] .
- • Consider alternative medications with no or minimal potential to inhibit or induce CYP3A4.
- • If concomitant use of strong CYP3A4 modulators cannot be avoided, closely monitor for adverse drug reactions.