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Temozolomide and Ascorbic Acid in Treating Patients With Recurrent High-Grade Glioma

A Phase I Study of Metronomic Temozolomide and Intravenous Ascorbic Acid for Patients With Recurrent High Grade Glioma

Status
Terminated
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02168270
Enrollment
4
Registered
2014-06-20
Start date
2014-06-16
Completion date
2015-08-20
Last updated
2023-11-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Anaplastic Astrocytoma, Anaplastic Oligoastrocytoma, Anaplastic Oligodendroglioma, Glioblastoma, Gliosarcoma

Brief summary

This phase I trial studies the side effects and best dose of ascorbic acid when given together with temozolomide in treating patients with high-grade glioma that has come back. Drugs used in chemotherapy, such as temozolomide, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Ascorbic acid contains ingredients that may prevent or slow the growth of high-grade gliomas. Giving temozolomide with ascorbic acid may kill more tumor cells.

Detailed description

PRIMARY OBJECTIVES: I. To evaluate the toxicities and determine the recommended dose of intravenous ascorbic acid given three times weekly in combination with temozolomide in patients with recurrent high grade glioma. SECONDARY OBJECTIVES: I. To evaluate changes in the levels of serum ascorbic acid using high-performance liquid chromatography (HPLC) with coulometric electrochemical detection) during therapy with ascorbic acid and temozolomide. II. Radiographic assessment of disease status after 2 cycles of therapy with ascorbic acid and temozolomide. III. To evaluate progression-free and overall survival of patients with recurrent high grade glioma treated with therapy with ascorbic acid and temozolomide. IV. To descriptively examine quality of life (QOL) using European Organization for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaires (QLQ)-C30 during treatment. OUTLINE: This is a dose-escalation study of ascorbic acid. Patients receive ascorbic acid intravenously (IV) over 90-120 minutes three times per week and temozolomide orally days 1-28. Treatment repeats every 4 weeks for up to 12 courses in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up at 30 days, every 2 months for 1 year and then periodically thereafter.

Interventions

DIETARY_SUPPLEMENTascorbic acid

Given IV

DRUGtemozolomide

Given PO

OTHERquality-of-life assessment

Ancillary studies

OTHERlaboratory biomarker analysis

Correlative studies

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
University of Nebraska
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
19 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients must have pathologically proven diagnosis of high grade glioma * Patients must have received prior radiation therapy and standard temozolomide * Patients must be three or more months from the end of chemoradiotherapy or have biopsy or imaging consistent with disease progression * Patients must have recovered from toxicity of prior therapy * Eastern Cooperative Oncology Group (ECOG) performance status of 0-2 or better * Absolute neutrophil count (ANC) count \>= 1,500/mm\^3 * Hemoglobin \>= 8 g/dL * Platelet count \>= 100,000/mm\^3 * Serum creatinine that is at or below 2.0 mg/dL * Serum aspartate aminotransferase (AST) and alanine aminotransferase (ALT) less than 1.5 times the upper limits of normal; note: if hepatic function is abnormal, the decision to initiate temozolomide treatment should carefully consider the benefits and risks for the individual patient * Serum alkaline phosphatase less than 2.5 times the upper limits of normal; note: if hepatic function is abnormal, the decision to initiate temozolomide treatment should carefully consider the benefits and risks for the individual patient * The patient must be aware of the neoplastic nature of his/her disease and willingly provide written, informed consent after being informed of the procedure to be followed, the experimental nature of the therapy, alternatives, potential benefits, side-effects, risks, and discomforts * Women of reproductive potential must be non-pregnant and non-nursing and must agree to employ an effective barrier method of birth control throughout the study and for up to 6 months following treatment * Women of child-bearing potential must have a negative pregnancy test within 7 days of initiating study; (no childbearing potential is defined as age 55 years or older and no menses for two years or any age with surgical removal of the uterus and/or both ovaries)

Exclusion criteria

* History of uncontrollable allergic reactions to temozolomide or ascorbic acid or to antiemetics appropriate for administration in conjunction with protocol-directed chemotherapy * Known human immunodeficiency virus (HIV)-positivity AND actively being treated with highly active anti-retroviral therapy (HAART) * History of glucose-6-phosphate dehydrogenase deficiency * History of oxalate nephrolithiasis or urine oxalate \> 60 mg/dL * Anuria, dehydration, severe pulmonary congestion or pulmonary edema or fixed low cardiac input since all are conditions for which osmotic diuresis are contraindicated and ascorbic acid has high osmolarity * Any other clinically significant medical disease or condition laboratory abnormality or psychiatric illness that, in the Investigator's opinion, may interfere with protocol adherence or a subject's ability to give informed consent * Patients who are on the following drugs and cannot have a drug substitution: flecainide, methadone, amphetamines, quinidine, and chlorpropamide; note: high dose ascorbic acid may affect urine acidification and, as a result, may affect clearance rates of these drugs * Simultaneous participation in other therapeutic clinical trials will not be allowed * Inability to co-operate with the requirements of the protocol * Pregnant and nursing women are excluded from this study

Design outcomes

Primary

MeasureTime frameDescription
Maximum Tolerated Dose of Ascorbic Acid in Combination With Temozolomide56 daysMaximum tolerated dose of ascorbic acid in combination with temozolomide, defined as the highest dose tested which results in dose limiting toxicity (DLT) in no more than one of six evaluable patients. Graded by the National Cancer Institute (NCI) Common Toxicity Criteria for Adverse Events version 4.0. DLT incidence will be described by dose level.
Incidence Rates of Adverse Events, Graded According to the NCI Common Toxicity Criteria for Adverse Events Version 4.0Up to 30 days after last administration of study medicationThe incidence rates of adverse events will be described by dose level. The frequency of occurrence of overall toxicity, categorized by toxicity grades, will be described.

Secondary

MeasureTime frameDescription
Changes in Serum Levels of Ascorbic Acid Using High-performance Liquid Chromatography (HPLC) With Coulometric Electrochemical Detection)Baseline to up to 52 weeksCorrelation of intracellular glutathione (in peripheral blood mononuclear cells) with ascorbic acid levels during therapy with ascorbic acid and temozolomide will be summarized using descriptive statistics to summarize changes over time.
Using Radiologic Measurements for Tumor ResponseUp to 52 weeksThe measurement of effect will be based on the Macdonald criteria

Countries

United States

Participant flow

Participants by arm

ArmCount
Treatment (Ascorbic Acid, Temozolomide)
Patients receive ascorbic acid IV over 90-120 minutes three times per week and temozolomide orally days 1-28. Treatment repeats every 4 weeks for up to 12 courses in the absence of disease progression or unacceptable toxicity. ascorbic acid: Given IV temozolomide: Given PO quality-of-life assessment: Ancillary studies laboratory biomarker analysis: Correlative studies
4
Total4

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyLack of Efficacy4

Baseline characteristics

CharacteristicTreatment (Ascorbic Acid, Temozolomide)
Age, Continuous42 years
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
4 Participants
Region of Enrollment
United States
4 participants
Sex: Female, Male
Female
2 Participants
Sex: Female, Male
Male
2 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 4
other
Total, other adverse events
1 / 4
serious
Total, serious adverse events
2 / 4

Outcome results

Primary

Incidence Rates of Adverse Events, Graded According to the NCI Common Toxicity Criteria for Adverse Events Version 4.0

The incidence rates of adverse events will be described by dose level. The frequency of occurrence of overall toxicity, categorized by toxicity grades, will be described.

Time frame: Up to 30 days after last administration of study medication

Population: This study was terminated after only 4 patients enrolled. Incidence rates of adverse event could not be describe by dose level.

Primary

Maximum Tolerated Dose of Ascorbic Acid in Combination With Temozolomide

Maximum tolerated dose of ascorbic acid in combination with temozolomide, defined as the highest dose tested which results in dose limiting toxicity (DLT) in no more than one of six evaluable patients. Graded by the National Cancer Institute (NCI) Common Toxicity Criteria for Adverse Events version 4.0. DLT incidence will be described by dose level.

Time frame: 56 days

Population: This study was terminated as subjects had disease progression so no subjects were evaluable.

Secondary

Changes in Serum Levels of Ascorbic Acid Using High-performance Liquid Chromatography (HPLC) With Coulometric Electrochemical Detection)

Correlation of intracellular glutathione (in peripheral blood mononuclear cells) with ascorbic acid levels during therapy with ascorbic acid and temozolomide will be summarized using descriptive statistics to summarize changes over time.

Time frame: Baseline to up to 52 weeks

Population: No patients were analyzed as all experienced progressive disease after 2 cycles of treatment.

Secondary

Using Radiologic Measurements for Tumor Response

The measurement of effect will be based on the Macdonald criteria

Time frame: Up to 52 weeks

Population: This outcome measure was not analyzed as all patients had progressive disease by 2 cycles of treatment.

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026