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Efficacy and Safety of Imatinib Mesylate Plus Hydroxyurea (HU) in Patients With Recurrent Glioblastoma Multiforme (GBM)

Information source: Novartis
ClinicalTrials.gov processed this data on August 23, 2015
Link to the current ClinicalTrials.gov record.

Condition(s) targeted: Recurrent Glioblastoma Multiforme (GBM)

Intervention: Imatinib tablets (Drug); Hydroxyurea capsules (Drug)

Phase: Phase 2

Status: Terminated

Sponsored by: Novartis

Official(s) and/or principal investigator(s):
David Reardon, Dr., Principal Investigator, Affiliation: Duke University


This was an investigational study to assess the objective overall response (OOR) rate (complete response [CR] + partial response [PR]) of imatinib mesylate and hydroxyurea (hydroxycarbamide) combination therapy in patients with recurrent glioblastoma multiforme (brain tumors). This study also evaluated the duration of tumor response (as per MacDonald criteria), clinical benefit, progression-free survival rate at 6 and 12 months, and the survival rate at 12 and 24 months.

Clinical Details

Official title: A Phase II, Open-label, Multicenter Study Evaluating the Efficacy of Imatinib Plus Hydroxyurea (HU) in Patients With Progressive Glioblastoma Multiforme (GBM) Receiving or Not Receiving Enzyme-inducing Anticonvulsant Drugs (EIACDs)

Study design: Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Primary outcome: Percentage of Patients With an Objective Overall Response (OOR)

Secondary outcome:

Duration of Objective Overall Response (OOR)

Percentage of Patients Who Had Clinical Benefit

Percentage of Patients With Progression-free Survival at Months 6 and 12

Percentage of Patients Surviving at Months 6, 12, and 24

Number of Patients With at Least 1 Adverse Event

Detailed description: This ClinicalTrials. gov record includes the results from two studies (Novartis protocol IDs CSTI571H2201 and CSTI571H2202) which were conducted separately but reported together in a single clinical study report. Both studies were phase II, open-label, multicenter, single-arm studies that evaluated the efficacy of imatinib mesylate plus hydroxyurea in subjects with progressive glioblastoma multiforme. The studies were identical in design with two exceptions: Patients in study CSTI571H2201 received a dose of imatinib 600 mg once daily and were not allowed concomitant use of enzyme-inducing anticonvulsant drugs (EIACDs); patients in study CSTI571H2202 received a dose of imatinib 500 mg twice daily and were allowed concomitant use of EIACDs.


Minimum age: 18 Years. Maximum age: N/A. Gender(s): Both.


Inclusion criteria:

- Males and females ≥ 18 years old.

- Histologically-confirmed diagnosis of progressive primary glioblastoma multiforme

(GBM) based on original diagnosis. Patients with prior low-grade glioma were eligible if histological re-assessment demonstrated transformation to GBM.

- No more than one prior episode of progressive disease following previously received

surgery and/or radiation and only one prior chemotherapy exposure of either temozolomide (TMZ) or nitrosourea including the application of polifeprosan (Gliadel®) wafers.

- Presence of measurable disease on gadolinium-enhanced magnetic resonance imaging


- Patients taking steroids must have been on a stable dose for ≥ 7 days.

- Eastern Cooperative Oncology Group (ECOG) performance score ≤ 2.

- Hemoglobin ≥ 10 g/dL (or hematocrit > 29%), absolute neutrophil count (ANC) > 1500

cells/L, platelets > 100,000 cells/L.

- Serum creatinine < 1. 5 mg/dL, blood urea nitrogen (BUN) < 25 mg/dL, serum aspartate

aminotransferase (AST) and bilirubin < 1. 5 x upper limit of normal (ULN).

- Sexually-active male and female patients were required to use double-barrier

contraception (oral contraceptive plus barrier contraceptive) or must have undergone clinically documented total hysterectomy, ovariectomy, or tubal ligation.

- Female patients of childbearing potential must have had a negative pregnancy test

within 48 hours prior to start of study drug.

- Life expectancy ≥ 8 weeks.

- Signed informed consent by the patient prior to patient entry and any study

procedure. Exclusion Criteria:

- Receipt of imatinib or hydroxyurea (HU) prior to study entry or receipt of any

investigational agent within the last 6 months.

- Patients who had received a second course of chemotherapy or radiotherapy, unless

given as a single localized application of radio surgery.

- In study STI571H2201 only, receipt of enzyme-inducing anticonvulsant drugs (EIACDs),

eg, carbamazepine, phenobarbital, phenytoin, fosphenytoin, oxcarbazepine, or primidone. Previous EIACD should have been interrupted 4 weeks prior to study start.

- Grade ≥ 2 peripheral edema or pulmonary or pericardial effusions or ascites of any


- Presence of any uncontrolled systemic infection.

- Patients who were not a minimum of 12 weeks from completion of conventional external

beam radiotherapy unless: 1. There was new radiographical enhancement outside the field of radiation, or 2. There was new pathological confirmation of recurrent tumor, or 3. Progressive radiographical enhancement noted on post-radiotherapy/TMZ continue to worsen after an additional course of TMZ.

- Evidence of intra-tumor hemorrhage on pretreatment diagnostic imaging, except for

stable post-operative Grade 1 hemorrhage, patients with an excessive risk of an intracranial hemorrhagic event, and patients with history of central nervous system (excluding post-operative Grade 1) or intraocular bleed.

- Patients who had undergone major surgery within 2 weeks prior to study entry or who

had not recovered from prior major surgery, patients who had received chemotherapy within 4 weeks prior to study start, or who have not recovered from toxic effects of such therapy.

- Impairment of gastrointestinal function or gastrointestinal disease that could

significantly alter the absorption of imatinib.

- Patients taking warfarin sodium.

- Known history of human immunodeficiency virus (HIV) seropositivity; testing for HIV

was not required at study entry.

- For the purposes of MRI, patients with a pacemaker, ferromagnetic metal implants

other than those approved as safe for use in MR scanners (eg, some types of aneurysm clips, shrapnel), patients suffering from uncontrollable claustrophobia, or those physically unable to fit into the machine (eg, obesity).

- Patients considered by the investigator as unlikely to be compliant with the study,

take the study medications, travel for the necessary assessment visits, or have other medical conditions likely to interfere with the study assessments.

- Patients with another primary malignancy treated within the prior 3 years except

excised squamous cell carcinomas of the skin and carcinoma in situ lesions of other organs which had been treated for cure.

- Patients not able to provide reliable informed consent and who did not have a legal

representative for healthcare decisions on their behalf.

Locations and Contacts

Duke University Medical Center, Durham, North Carolina 27710, United States
Additional Information

Starting date: February 2006
Last updated: April 20, 2011

Page last updated: August 23, 2015

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