Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.

NCT00436436 · ClinicalTrials.gov registry record · Phase 2

O(6)-Benzylguanine and Temozolomide in Treating Patients With Glioblastoma Multiforme That Did Not Respond to Previous Temozolomide and Radiation Therapy

A Phase 2 study, sponsored by National Cancer Institute (NCI).

Terminated
Registry status
Phase 2
Development phase
12
Enrollment target

NCT00436436: Clinical Trial Phase 2 study, sponsored by National Cancer Institute (NCI).

NCT00436436 is a Phase 2 study that was terminated before completion, run by National Cancer Institute (NCI). The registered enrollment target is 12 participants, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (91% lower). According to ClinicalTrials.gov, the official US trial registry.

View on ClinicalTrials.gov ↗

View your shortlist → Add completion date to calendar (.ics) →

The verdict

NCT00436436, a Phase 2 study, was terminated before completion, sponsored by National Cancer Institute (NCI).

TERMINATED
Registry status
Phase 2
Development phase
12 participants
Enrollment target

Study Summary

RATIONALE: Drugs used in chemotherapy, such as O(6)-benzylguanine and temozolomide, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Giving more than one drug (combination chemotherapy) may kill more tumor cells. PURPOSE: This phase II trial is studying the side effects and how well giving O(6)-benzylguanine together with temozolomide works in treating patients with glioblastoma multiforme that did not respond to previous temozolomide and radiation therapy.

Primary Outcome

The date of response will be the date the response is first radiographically documented following initiation of therapy (typically, the date of the actual imaging modality). Complete response is complete disappearance of all measurable and evaluable disease. No new lesions. No evidence of non-evaluable disease. Partial response is greater than or equal to a 50% decrease compared to baseline in the sum of products of perpendicular diameters of all measurable lesions.

Interventions

  • DRUG O6-benzylguanine
  • DRUG temozolomide

Trial Details

FieldValue
Enrollment Target 12 participants
Start Date 2006-11-13
Est. Completion 2010-04-14
Phase Phase 2
National Cancer Institute (NCI)

3,257 total trials

Why NCT00436436 stopped before completion

NCT00436436 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 12 participants, a relatively small participant target, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (91% lower).

The record links to 0 conditions, and to 2 interventions - of which O6-benzylguanine is the first listed.

NCT00436436 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT00436436 about?

NCT00436436 is a clinical study titled "O(6)-Benzylguanine and Temozolomide in Treating Patients With Glioblastoma Multiforme That Did Not Respond to Previous Temozolomide and Radiation Therapy". RATIONALE: Drugs used in chemotherapy, such as O(6)-benzylguanine and temozolomide, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Giving more than one drug (combination chemotherapy) may kill more tumor cells. PURPOSE: This ...

What is the current status of trial NCT00436436?

This trial is currently terminated. It is a Phase 2 study. The enrollment target is 12 participants. The study started on 2006-11-13. Estimated completion is 2010-04-14.

What interventions are being tested in trial NCT00436436?

The interventions under investigation include: O6-benzylguanine (DRUG), temozolomide (DRUG).

Who is sponsoring clinical trial NCT00436436?

This trial is sponsored by National Cancer Institute (NCI), which has 3,257 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT00436436's enrollment target sits among peer trials

12 1948th of 2000 higher than 34 of 2,000 other Phase 2 trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Phase 2 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

Nationwide trials with similar profiles

Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.

Similar enrollment target

  • NCT02602769 · 12 participants

    Whole Transcriptome Profiling and Metabolic Phenotyping in Children With ROHHAD Syndrome

  • NCT02605421 · 12 participants · Phase 2

    Myeloablative Consolidation Therapy and Tandem Autologous Stem Cell Rescue in Patients With High-Risk Neuroblastoma

  • NCT02619448 · 12 participants · Early Phase 1

    Concurrent Chemotherapy Plus HFR Radiation Therapy in Inoperable NSCLC

  • NCT03311503 · 12 participants · Phase 1

    Phase I/II Trial of Lentiviral Gene Transfer for SCID-X1 With Low Dose Targeted Busulfan Conditioning

Similar registry start date

  • NCT05962346 · started 2026-12 · NA

    Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia

  • NCT07125183 · started 2026-12 · Phase 2

    Study on Efficacy and Tolerability of Weekly Doxorubicin in Elderly Patients With Advanced or Metastatic Leiomyosarcoma

  • NCT07292298 · started 2026-11 · Phase 2

    Phase 2 Single-Arm Rectal Cancer Brachytherapy for Patients With Low-Lying Residual Adenocarcinoma After Total Neoadjuvant Therapy to Improve Organ Preservation Rates

  • NCT04263285 · started 2026-10 · NA

    Treatment of Depression Post-SCI

Source: ClinicalTrials.gov NCT00436436, the US trial registry maintained by the National Library of Medicine. NCT00436436 (small enrollment · none site footprint · terminated) retrieved and formatted by PlainTrial, see methodology.