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Bioequivalence Study of Temozolomide in Patients With Primary Tumors of the Central Nervous System

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ClinicalTrials.gov Identifier: NCT02343081
Recruitment Status : Completed
First Posted : January 21, 2015
Results First Posted : April 2, 2015
Last Update Posted : April 2, 2015
Sponsor:
Collaborators:
FLENI Instituto de Rehabilitación y Educación Terapéutica, BA, Argentina.
Bioanalytical Unit, Laboratorio Raffo S.A., BA, Argentina.
FLENI Multi-Specialty Research Center, BA, Argentina.
Information provided by (Responsible Party):
Monte Verde SA

Brief Summary:
The purpose of this crossover, single-dose, bioequivalence study is to compare the rate and extent of absorption of Temozolomide after the administration of the study product (Dralitem®, Monte Verde S.A.) and the reference product (Temodal®, Schering Plough) in primary Central Nervous System patients.

Condition or disease Intervention/treatment Phase
Brain Neoplasms, Malignant, Primary Drug: Temozolomide Phase 4

Detailed Description:

Prospective, randomized, two-period, two treatment, two-way crossover bioequivalence study of two Temozolomide oral formulations (Dralitem vs. Temodal), in primary Central Nervous System tumor patients under fasting conditions. Open label to the patients and investigators and blind to the bioanalytical and clinical laboratories.

Study plan: days -21 to 0 (Recruitment period); days 1 to 5 (Treatment period); days 6 to 21 (Safety surveillance period). Sample size: 24 patients will be randomized. The patients will be administered Temozolomide 200 mg/m2 on the first two days (Dralitem) of the treatment cycle.

They will be admitted to the study clinical site on the evening of day 2. In the morning of day 3 they will be randomized into two groups of equal size. According to the assigned random number, each subject will receive a single oral dose of Temozolomide 200mg/m2 from either Monte Verde Sociedad Anónima (SA) product (Dralitem) or from Schering-Plough product (Temodal). The single dose of 200 mg/m2 will be reached with three different Temozolomide capsule strengths: 20, 100 and 250 mg. Drugs will be administered with 200-240 ml of water in semi-sitting upright position.

The following day (day 4) each subject will receive an oral dose of Temozolomide 200 mg/m2 of the product that did not receive the day before. On days 3 and 4 after drug administration, blood samples will be obtained for pharmacokinetic evaluation. The patient will be discharged from the clinical site on day 4 after completion of sampling for pharmacokinetic analysis. On day 5, all patients will receive Temozolomide 200 mg/m2 (Dralitem).

On days 3 and 4, samples of venous blood will be withdrawn from the forearm vein of each volunteer at the following time points: 0 (pre-dose) and 0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0, 4.0, 6.0, 8.0, 10.0 hours post-dose after each period administration. The washout period between the treatment arms was 10 hours, on days 3 and 4. Samples will be processed according to the validated method MANA (Método Analítico) - PLB (Proyecto Laboratorio Bioanalítico) 004 - TEM (Temozolomide) - 01/01. Measurement of plasma concentration of Temozolomide was performed using High Performance Liquid Chromatography (HPLC) followed by detection by tandem mass spectrometry (MS / MS).

The area under the curve (AUC) and the Cmax levels of the drug vs. time will be obtained for each subject. The resulting values of the logarithmic transformation of these parameters will be used for statistical comparisons (mixed effects ANOVA). The limits of the 90% confidence interval for the ratio of log transformed pharmacokinetic parameters will be calculated. Bioequivalence criteria: each calculated confidence interval should be within the acceptance range from 80.00 to 125.00.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 24 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Randomized, Open Label, Two-way Crossover, Single Dose Bioequivalence Study Comparing Dralitem® Capsules to the Reference Drug Temodal® Capsules in Patients With Primary Tumors of the Central Nervous System Under Fasting Conditions
Study Start Date : January 2012
Actual Primary Completion Date : October 2013
Actual Study Completion Date : October 2013

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Brain Tumors

Arm Intervention/treatment
Active Comparator: Temodal
Temozolomide (Schering-Plough) 200 mg/m2, single oral dose.
Drug: Temozolomide
Other Name: Temodal

Experimental: Dralitem
Temozolomide (Monte Verde S.A.) 200 mg/m2, single oral dose
Drug: Temozolomide
Other Name: Dralitem




Primary Outcome Measures :
  1. Cmax [ Time Frame: 0, 0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0, 4.0, 6.0, 8.0, 10.0 hours on Days 3 and 4 ]
    Rate of absorption of Temozolomide (Cmax) will be measured after the oral administration of the test product (Dralitem®, Monte Verde S.A.) or the reference product (Temodal®, Schering-Plough).

  2. AUC0-t [ Time Frame: 0, 0.25, 0.5, 0.75, 1.0, 1.25, 1.75, 2.0, 2.5, 3.0, 4.0, 6.0, 8.0, 10.0 hours on Days 3 and 4 ]
    Extent of absorption of Temozolomide from time (0) to the last quantifiable concentration (t) will be measured after the oral administration of the test product (Dralitem®, Monte Verde S.A.) or the reference product (Temodal®, Schering-Plough)

  3. AUC0-∞ [ Time Frame: 0, 0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0, 4.0, 6.0, 8.0, 10.0 hours on Days 3 and 4 ]
    Extent of absorption of Temozolomide from time (0) to infinity (∞) will be measured after oral administration of the test product (Dralitem®, Monte Verde S.A.) or the reference product (Temodal®, Schering-Plough).


Secondary Outcome Measures :
  1. Number of Adverse Events (AEs) and Serious Adverse Events (SAEs) [ Time Frame: Up to two weeks post last dose ]
    AEs and SAEs will be collected from the start of study treatment and until two weeks post last dose. If AEs or SAEs extend in time and are not resolved before the end of the 2-week follow up period, this period shall last until the event/s are resolved.


Other Outcome Measures:
  1. Kel [ Time Frame: 0, 0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0, 4.0, 6.0, 8.0, 10.0 hours on Days 3 and 4 ]
    Rate at which Temozolomide is removed from the body.

  2. T1/2 [ Time Frame: 0, 0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0, 4.0, 6.0, 8.0, 10.0 hours on Days 3 and 4 ]
    Time required for Temozolomide plasma concentration to decrease by 50%



Information from the National Library of Medicine

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Ages Eligible for Study:   21 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  1. Male or female patients with primary malignant tumors of the central nervous system (CNS) excluding subjects with primary CNS lymphoma.
  2. Age> 21 years.
  3. There should be a gap of two weeks between the last surgery and/or radiotherapy procedure and the day of randomization. If the procedure were intrabdominal, the gap should be of four weeks.
  4. Patients with neutrophils> 1.5 x 109 / L and platelets> 100 x 109 / L.
  5. Signed written informed consent for participation in the trial.

Exclusion Criteria:

  1. Known hypersensitivity to Temozolomide or any other ingredient of the pharmaceutical formulation.
  2. Any situation (eg. vomiting) that may interfere with the absorption of the product under study.
  3. Chemotherapy or biological therapy within four weeks prior to administering the products under study.
  4. Patients who experience any symptoms of toxicity to prior antineoplastic therapies upon administration of the products under study.
  5. Participation in other clinical research studies during the 90 days before the start of this study.
  6. History of alcohol or drugs abuse.
  7. History of severe allergic reactions to any type of antigen.
  8. History of gastrointestinal surgery (except uncomplicated appendectomy, of at least three months old).
  9. Patients whose clinical status would affect the safety of the products under study or interfere with the pharmacokinetic evaluation, at the discretion of the investigator.
  10. Pregnant women or women planning to become pregnant during the study.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02343081


Locations
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Argentina
FLENI Instituto Clínico-Quirúrgico de Diagnóstico y Tratamiento
Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina, C1428AQK
FLENI Instituto de Rehabilitación y Educación Terapéutica
Escobar, Buenos Aires, Argentina, B1625XAS
Sponsors and Collaborators
Monte Verde SA
FLENI Instituto de Rehabilitación y Educación Terapéutica, BA, Argentina.
Bioanalytical Unit, Laboratorio Raffo S.A., BA, Argentina.
FLENI Multi-Specialty Research Center, BA, Argentina.
Investigators
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Principal Investigator: Alejandro D Muggeri, Physician FLENI Instituto Clínico-Quirúrgico de Diagnóstico y Tratamiento

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
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Responsible Party: Monte Verde SA
ClinicalTrials.gov Identifier: NCT02343081    
Other Study ID Numbers: RFF -0208
First Posted: January 21, 2015    Key Record Dates
Results First Posted: April 2, 2015
Last Update Posted: April 2, 2015
Last Verified: March 2015
Keywords provided by Monte Verde SA:
brain neoplasm
bioequivalence
temozolomide
Additional relevant MeSH terms:
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Brain Neoplasms
Central Nervous System Neoplasms
Neoplasms
Nervous System Neoplasms
Neoplasms by Site
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Temozolomide
Antineoplastic Agents, Alkylating
Alkylating Agents
Molecular Mechanisms of Pharmacological Action
Antineoplastic Agents