Generic name: PENTOSTATIN 2mg in 1mL
Dosage form: injection, powder, lyophilized, for solution
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It is recommended that patients receive hydration with 500 to 1,000 mL of 5% Dextrose in 0.5 Normal Saline or equivalent before NIPENT administration. An additional 500 mL of 5% Dextrose or equivalent should be administered after NIPENT is given.
The recommended dosage of NIPENT for the treatment of hairy cell leukemia is 4 mg/m2 every other week. NIPENT may be administered intravenously by bolus injection or diluted in a larger volume and given over 20 to 30 minutes. (See Preparation of Intravenous Solution.)
Higher doses are not recommended.
No extravasation injuries were reported in clinical studies.
The optimal duration of treatment has not been determined. In the absence of major toxicity and with observed continuing improvement, the patient should be treated until a complete response has been achieved. Although not established as required, the administration of two additional doses has been recommended following the achievement of a complete response.
All patients receiving NIPENT at 6 months should be assessed for response to treatment. If the patient has not achieved a complete or partial response, treatment with NIPENT should be discontinued.
If the patient has achieved a partial response, NIPENT treatment should be continued in an effort to achieve a complete response. At any time thereafter that a complete response is achieved, two additional doses of NIPENT are recommended. NIPENT treatment should then be stopped. If the best response to treatment at the end of 12 months is a partial response, it is recommended that treatment with NIPENT be stopped.
Withholding or discontinuation of individual doses may be needed when severe adverse reactions occur. Drug treatment should be withheld in patients with severe rash, and withheld or discontinued in patients showing evidence of nervous system toxicity.
NIPENT treatment should be withheld in patients with active infection occurring during the treatment but may be resumed when the infection is controlled.
Patients who have elevated serum creatinine should have their dose withheld and a creatinine clearance determined. There are insufficient data to recommend a starting or a subsequent dose for patients with impaired renal function (creatinine clearance <60 mL/min).
Patients with impaired renal function should be treated only when the potential benefit justifies the potential risk. Two patients with impaired renal function (creatinine clearances 50 to 60 mL/min) achieved complete response without unusual adverse events when treated with 2 mg/m2.
No dosage reduction is recommended at the start of therapy with NIPENT in patients with anemia, neutropenia, or thrombocytopenia. In addition, dosage reductions are not recommended during treatment in patients with anemia and thrombocytopenia if patients can be otherwise supported hematologically. NIPENT should be temporarily withheld if the absolute neutrophil count falls during treatment below 200 cells/mm3 in a patient who had an initial neutrophil count greater than 500 cells/mm3 and may be resumed when the count returns to predose levels.
Preparation of Intravenous Solution
- Procedures for proper handling and disposal of anticancer drugs should be followed. Several guidelines on this subject have been published.2–7 There is no general agreement that all of the procedures recommended in the guidelines are necessary or appropriate. Spills and wastes should be treated with a 5% sodium hypochlorite solution prior to disposal.
- Protective clothing including polyethylene gloves must be worn.
- Transfer 5 mL of Sterile Water for Injection USP to the vial containing NIPENT and mix thoroughly to obtain complete dissolution of a solution yielding 2 mg/mL. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration.
- NIPENT may be given intravenously by bolus injection or diluted in a larger volume (25 to 50 mL) with 5% Dextrose Injection USP or 0.9% Sodium Chloride Injection USP. Dilution of the entire contents of a reconstituted vial with 25 mL or 50 mL provides a pentostatin concentration of 0.33 mg/mL or 0.18 mg/mL, respectively, for the diluted solutions.
- NIPENT solution when diluted for infusion with 5% Dextrose Injection USP or 0.9% Sodium Chloride Injection USP does not interact with PVC infusion containers or administration sets at concentrations of 0.18 mg/mL to 0.33 mg/mL.
NIPENT vials are stable at refrigerated storage temperature 2° to 8° C (36° to 46°F) for the period stated on the package. Vials reconstituted or reconstituted and further diluted as directed may be stored at room temperature and ambient light but should be used within 8 hours because NIPENT contains no preservatives.
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