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Uses
TEMODAR® (temozolomide) is indicated for the treatment of adult patients with newly diagnosed glioblastoma multiforme concomitantly with radiotherapy and then as maintenance treatment.
TEMODAR is indicated for the treatment of adult patients with refractory anaplastic astrocytoma, i.e., patients who have experienced disease progression on a drug regimen containing nitrosourea and procarbazine.
History
There is currently no drug history available for this drug.
Other Information
TEMODAR contains temozolomide, an imidazotetrazine derivative. The chemical name of temozolomide is 3,4-dihydro-3-methyl-4-oxoimidazo[5,1-d]-as-tetrazine-8-carboxamide. The structural formula is:
The material is a white to light tan/light pink powder with a molecular formula of C6H6N6O2 and a molecular weight of 194.15. The molecule is stable at acidic pH (<5) and labile at pH >7; hence TEMODAR can be administered orally and intravenously. The prodrug, temozolomide, is rapidly hydrolyzed to the active 5-(3-methyltriazen-1-yl) imidazole-4-carboxamide (MTIC) at neutral and alkaline pH values, with hydrolysis taking place even faster at alkaline pH.
TEMODAR Capsules:
Each capsule for oral use contains either 5 mg, 20 mg, 100 mg, 140 mg, 180 mg, or 250 mg of temozolomide.
The inactive ingredients for TEMODAR Capsules are as follows:
- TEMODAR 5 mg: lactose anhydrous (132.8 mg), colloidal silicon dioxide (0.2 mg), sodium starch glycolate (7.5 mg), tartaric acid (1.5 mg), and stearic acid (3 mg).
- TEMODAR 20 mg: lactose anhydrous (182.2 mg), colloidal silicon dioxide (0.2 mg), sodium starch glycolate (11 mg), tartaric acid (2.2 mg), and stearic acid (4.4 mg).
- TEMODAR 100 mg: lactose anhydrous (175.7 mg), colloidal silicon dioxide (0.3 mg), sodium starch glycolate (15 mg), tartaric acid (3 mg), and stearic acid (6 mg).
- TEMODAR 140 mg: lactose anhydrous (246 mg), colloidal silicon dioxide (0.4 mg), sodium starch glycolate (21 mg), tartaric acid (4.2 mg), and stearic acid (8.4 mg).
- TEMODAR 180 mg: lactose anhydrous (316.3 mg), colloidal silicon dioxide (0.5 mg), sodium starch glycolate (27 mg), tartaric acid (5.4 mg), and stearic acid (10.8 mg).
- TEMODAR 250 mg: lactose anhydrous (154.3 mg), colloidal silicon dioxide (0.7 mg), sodium starch glycolate (22.5 mg), tartaric acid (9 mg), and stearic acid (13.5 mg).
The body of the capsules are made of gelatin, and are opaque white. The cap is also made of gelatin, and the colors vary based on the dosage strength. The capsule body and cap are imprinted with pharmaceutical branding ink, which contains shellac, dehydrated alcohol, isopropyl alcohol, butyl alcohol, propylene glycol, purified water, strong ammonia solution, potassium hydroxide, and ferric oxide.
- TEMODAR 5 mg: The green cap contains gelatin, titanium dioxide, iron oxide yellow, sodium lauryl sulfate, and FD&C Blue #2.
- TEMODAR 20 mg: The yellow cap contains gelatin, sodium lauryl sulfate, and iron oxide yellow.
- TEMODAR 100 mg: The pink cap contains gelatin, titanium dioxide, sodium lauryl sulfate, and iron oxide red.
- TEMODAR 140 mg: The blue cap contains gelatin, sodium lauryl sulfate, and FD&C Blue #2.
- TEMODAR 180 mg: The orange cap contains gelatin, iron oxide red, iron oxide yellow, titanium dioxide, and sodium lauryl sulfate.
- TEMODAR 250 mg: The white cap contains gelatin, titanium dioxide, and sodium lauryl sulfate.
TEMODAR for Injection:
Each vial contains 100 mg of sterile and pyrogen-free temozolomide lyophilized powder for intravenous injection. The inactive ingredients are: mannitol (600 mg), L-threonine (160 mg), polysorbate 80 (120 mg), sodium citrate dihydrate (235 mg), and hydrochloric acid (160 mg).
Sources
Temodar Manufacturers
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Physicians Total Care, Inc.
Temodar | Physicians Total Care, Inc.
2.1 Recommended Dosing and Dose Modification GuidelinesThe recommended dose for TEMODAR as an intravenous infusion over 90 minutes is the same as the dose for the oral capsule formulation. Bioequivalence has been established only when TEMODAR for Injection was given over 90 minutes [see Clinical Pharmacology (12.3)]. Dosage of TEMODAR must be adjusted according to nadir neutrophil and platelet counts in the previous cycle and the neutrophil and platelet counts at the time of initiating the next cycle. For TEMODAR dosage calculations based on body surface area (BSA) see Table 5. For suggested capsule combinations on a daily dose see Table 6.
Patients with Newly Diagnosed High Grade Glioma:
Concomitant Phase:
TEMODAR is administered at 75 mg/m2 daily for 42 days concomitant with focal radiotherapy (60 Gy administered in 30 fractions) followed by maintenance TEMODAR for 6 cycles. Focal RT includes the tumor bed or resection site with a 2- to 3-cm margin. No dose reductions are recommended during the concomitant phase; however, dose interruptions or discontinuation may occur based on toxicity. The TEMODAR dose should be continued throughout the 42-day concomitant period up to 49 days if all of the following conditions are met: absolute neutrophil count ≥1.5 × 109 /L, platelet count ≥100 × 109/L, common toxicity criteria (CTC) nonhematological toxicity ≤Grade 1 (except for alopecia, nausea, and vomiting). During treatment a complete blood count should be obtained weekly. Temozolomide dosing should be interrupted or discontinued during concomitant phase according to the hematological and nonhematological toxicity criteria as noted in Table 1. PCP prophylaxis is required during the concomitant administration of TEMODAR and radiotherapy and should be continued in patients who develop lymphocytopenia until recovery from lymphocytopenia (CTC Grade ≤1).
TABLE 1: Temozolomide Dosing Interruption or Discontinuation During Concomitant Radiotherapy and Temozolomide Toxicity TMZ Interruption* TMZ Discontinuation TMZ=temozolomide; CTC=Common Toxicity Criteria. * Treatment with concomitant TMZ could be continued when all of the following conditions were met: absolute neutrophil count ≥1.5 × 10 9/L; platelet count ≥100 × 10 9/L; CTC nonhematological toxicity ≤Grade 1 (except for alopecia, nausea, vomiting). Absolute Neutrophil Count ≥0.5 and <1.5 × 109/L <0.5 × 109/L Platelet Count ≥10 and <100 × 109/L <10 × 109/L CTC Nonhematological Toxicity
(except for alopecia, nausea, vomiting) CTC Grade 2 CTC Grade 3 or 4Maintenance Phase:
Cycle 1:
Four weeks after completing the TEMODAR+RT phase, TEMODAR is administered for an additional 6 cycles of maintenance treatment. Dosage in Cycle 1 (maintenance) is 150 mg/m2 once daily for 5 days followed by 23 days without treatment.
Cycles 2–6:
At the start of Cycle 2, the dose can be escalated to 200 mg/m2, if the CTC nonhematologic toxicity for Cycle 1 is Grade ≤2 (except for alopecia, nausea, and vomiting), absolute neutrophil count (ANC) is ≥1.5 × 109/L, and the platelet count is ≥100 × 109/L. The dose remains at 200 mg/m2 per day for the first 5 days of each subsequent cycle except if toxicity occurs. If the dose was not escalated at Cycle 2, escalation should not be done in subsequent cycles.
Dose Reduction or Discontinuation During Maintenance:
Dose reductions during the maintenance phase should be applied according to Tables 2 and 3.
During treatment, a complete blood count should be obtained on Day 22 (21 days after the first dose of TEMODAR) or within 48 hours of that day, and weekly until the ANC is above 1.5 × 109/L (1500/µL) and the platelet count exceeds 100 × 109/L (100,000/µL). The next cycle of TEMODAR should not be started until the ANC and platelet count exceed these levels. Dose reductions during the next cycle should be based on the lowest blood counts and worst nonhematologic toxicity during the previous cycle. Dose reductions or discontinuations during the maintenance phase should be applied according to Tables 2 and 3.
TABLE 2: Temozolomide Dose Levels for Maintenance Treatment Dose Level Dose (mg/m2/day) Remarks −1 100 Reduction for prior toxicity 0 150 Dose during Cycle 1 1 200 Dose during Cycles 2–6 in absence of toxicity TABLE 3: Temozolomide Dose Reduction or Discontinuation During Maintenance Treatment Toxicity Reduce TMZ by 1 Dose Level* Discontinue TMZ TMZ=temozolomide; CTC=Common Toxicity Criteria. * TMZ dose levels are listed in Table 2. † TMZ is to be discontinued if dose reduction to <100 mg/m 2 is required or if the same Grade 3 nonhematological toxicity (except for alopecia, nausea, vomiting) recurs after dose reduction. Absolute Neutrophil Count <1.0 × 109/L See footnote † Platelet Count <50 × 109/L See footnote † CTC Nonhematological Toxicity
(except for alopecia, nausea, vomiting) CTC Grade 3 CTC Grade 4†Patients with Refractory Anaplastic Astrocytoma:
For adults the initial dose is 150 mg/m2 once daily for 5 consecutive days per 28-day treatment cycle. For adult patients, if both the nadir and day of dosing (Day 29, Day 1 of next cycle) ANC are ≥1.5 × 109/L (1500/µL) and both the nadir and Day 29, Day 1 of next cycle platelet counts are ≥100 × 109/L (100,000/µL), the TEMODAR dose may be increased to 200 mg/m2/day for 5 consecutive days per 28-day treatment cycle. During treatment, a complete blood count should be obtained on Day 22 (21 days after the first dose) or within 48 hours of that day, and weekly until the ANC is above 1.5 × 109/L (1500/µL) and the platelet count exceeds 100 × 109/L (100,000/µL). The next cycle of TEMODAR should not be started until the ANC and platelet count exceed these levels. If the ANC falls to <1.0 × 109/L (1000/µL) or the platelet count is <50 × 109/L (50,000/µL) during any cycle, the next cycle should be reduced by 50 mg/m2, but not below 100 mg/m2, the lowest recommended dose (see Table 4). TEMODAR therapy can be continued until disease progression. In the clinical trial, treatment could be continued for a maximum of 2 years, but the optimum duration of therapy is not known.
TABLE 4: Dosing Modification Table TABLE 5: Daily Dose Calculations by Body Surface Area (BSA) Total BSA
(m2) 75 mg/m2
(mg daily) 150 mg/m2
(mg daily) 200 mg/m2
(mg daily) 1.0 75 150 200 1.1 82.5 165 220 1.2 90 180 240 1.3 97.5 195 260 1.4 105 210 280 1.5 112.5 225 300 1.6 120 240 320 1.7 127.5 255 340 1.8 135 270 360 1.9 142.5 285 380 2.0 150 300 400 2.1 157.5 315 420 2.2 165 330 440 2.3 172.5 345 460 2.4 180 360 480 2.5 187.5 375 500 TABLE 6: Suggested Capsule Combinations Based on Daily Dose in Adults Number of Daily Capsules by Strength (mg) Total Daily Dose (mg) 250 mg 180 mg 140 mg 100 mg 20 mg 5 mg 75 0 0 0 0 3 3 82.5 0 0 0 0 4 0 90 0 0 0 0 4 2 97.5 0 0 0 1 0 0 105 0 0 0 1 0 1 112.5 0 0 0 1 0 2 120 0 0 0 1 1 0 127.5 0 0 0 1 1 1 135 0 0 0 1 1 3 142.5 0 0 1 0 0 0 150 0 0 1 0 0 2 157.5 0 0 1 0 1 0 165 0 0 1 0 1 1 172.5 0 0 1 0 1 2 180 0 1 0 0 0 0 187.5 0 1 0 0 0 1 195 0 1 0 0 0 3 200 0 1 0 0 1 0 210 0 0 0 2 0 2 220 0 0 0 2 1 0 225 0 0 0 2 1 1 240 0 0 1 1 0 0 255 1 0 0 0 0 1 260 1 0 0 0 0 2 270 1 0 0 0 1 0 280 0 0 2 0 0 0 285 0 0 2 0 0 1 300 0 0 0 3 0 0 315 0 0 0 3 0 3 320 0 1 1 0 0 0 330 0 1 1 0 0 2 340 0 1 1 0 1 0 345 0 1 1 0 1 1 360 0 2 0 0 0 0 375 0 2 0 0 0 3 380 0 1 0 2 0 0 400 0 0 0 4 0 0 420 0 0 3 0 0 0 440 0 0 3 0 1 0 460 0 2 0 1 0 0 480 0 1 0 3 0 0 500 2 0 0 0 0 0 2.2 Preparation and AdministrationTEMODAR Capsules:
In clinical trials, TEMODAR was administered under both fasting and nonfasting conditions; however, absorption is affected by food [see Clinical Pharmacology (12)], and consistency of administration with respect to food is recommended. There are no dietary restrictions with TEMODAR. To reduce nausea and vomiting, TEMODAR should be taken on an empty stomach. Bedtime administration may be advised. Antiemetic therapy may be administered prior to and/or following administration of TEMODAR.
TEMODAR (temozolomide) Capsules should not be opened or chewed. They should be swallowed whole with a glass of water.
If capsules are accidentally opened or damaged, precautions should be taken to avoid inhalation or contact with the skin or mucous membranes [see How Supplied/Storage and Handling (16.1)].
TEMODAR for Injection:
Each vial of TEMODAR for Injection contains sterile and pyrogen-free temozolomide lyophilized powder. When reconstituted with 41 mL Sterile Water for Injection, the resulting solution will contain 2.5 mg/mL temozolomide. Bring the vial to room temperature prior to reconstitution with Sterile Water for Injection. The vials should be gently swirled and not shaken. Vials should be inspected, and any vial containing visible particulate matter should not be used. Do not further dilute the reconstituted solution. After reconstitution, store at room temperature (25°C [77°F]). Reconstituted product must be used within 14 hours, including infusion time.
Using aseptic technique, withdraw up to 40 mL from each vial to make up the total dose based on Table 5 above and transfer into an empty 250 mL infusion bag.2 TEMODAR for Injection should be infused intravenously using a pump over a period of 90 minutes. TEMODAR for Injection should be administered only by intravenous infusion. Flush the lines before and after each TEMODAR infusion.
TEMODAR for Injection may be administered in the same intravenous line with 0.9% Sodium Chloride injection only.
Because no data are available on the compatibility of TEMODAR for Injection with other intravenous substances or additives, other medications should not be infused simultaneously through the same intravenous line.
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Merck Sharp & Dohme Corp.
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