New drug cocktail targets Hard-to-Treat brain cancers
NCT ID NCT01107522
First seen Jun 25, 2026 · Last updated Jun 26, 2026 · Updated 1 time
Summary
This early-phase study tests an experimental drug called CTO, alone or combined with standard chemotherapy (Temodar) and radiation, in people with advanced solid tumors or glioblastoma (a type of brain cancer). The main goal is to find the safest dose and check for side effects. About 100 participants will be enrolled across three treatment groups.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Carboxyamidotriazole orotate (CTO) and temozolomide (Temodar)
- What this could lead to
- If successful, this could point toward a new combination treatment for glioblastoma and other advanced solid tumors.
- What could go wrong
- This is a very early Phase 1 trial with only 100 participants, focused on safety and dosing. It is too soon to know if the drug combination will effectively shrink tumors or improve survival.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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About 100 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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May 2010
- Expected to finish
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Jan 2026
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria (Treatment Arm A) 1. Patients must have histologically-confirmed solid tumors that are advanced or metastatic, and refractory after standard therapy, or for which there is no standard therapy. 2. Patients must have measurable disease as defined by RECIST version 1.1. 3. Patients must have received prior anticancer therapy or not be eligible for any established conventional therapy whether surgical or pharmacologic. 4. Patients must have recovered from all acute adverse effects (excluding alopecia) of prior therapies to baseline or \<=grade 1 prior to study entry. 5. Patients must have a performance status of 0, 1, or 2. 6. Patients must be men and women \>=18 years of age. 7. Patients must have adequate bone marrow function, defined as an absolute neutrophil count \>=1.5 x 10\^9/L and a platelet count \>= 100 x 10\^9/L. 8. Patients must have adequate renal function, defined as serum creatinine \<= 1.2 mg/dL (if \> 1.2 mg/dL, a calculated creatinine clearance \[by the Cockcroft-Gault method\] must be \>=60 mL/min/1.73 m\^2). 9. Patients must have adequate hepatic function, defined as plasma total bilirubin \<=1.5 mg, alanine transaminase (ALT) and aspartate transaminase (AST) \<=2.5 X ULN. Patients with Gilbert's disease outside these limits are judged to be ineligible. 10. Female patients of childbearing potential must have a negative serum or urine pregnancy test result at time of pre-treatment screening. 11. Patients with reproductive potential must agree to use at least one form of barrier contraception prior to study entry and for up to 30 days beyond the last administration of study drug. 12. Patients must be judged to be capable by the Investigator of providing informed consent and must be willing to provide written informed consent prior to the start of any study specific procedures. 13. Patients should have a life expectancy of at least 12 weeks. Exclusion Criteria (Treatment Arm A) 1. Patients may not have had prior chemotherapy, hormonal therapy, radiation therapy, or biologic therapy in the 4 weeks prior to study entry with the exception of mitomycin C or nitrosoureas, for which patients must be 6 weeks from prior treatment. For patients who have been treated with targeted therapy, 5 half-lives of that therapy (or 28 days, whichever is shorter) must have passed prior to enrollment in the study. 2. Patients may not have any concomitant condition that could compromise the objectives of this study and the patients' compliance and ability to tolerate this therapy and complete at least 2 cycles of therapy, including, but not limited to the following: * Congestive heart failure or uncontrolled angina pectoris, previous history of myocardial infarction within 1 year from study entry, uncontrolled hypertension, or dysrhythmias. * Active infection. * Unstable diabetes mellitus * Psychiatric disorder that may interfere with consent and/or protocol compliance. 3. Pregnant or breastfeeding women. 4. Patients with another malignancy in the past 3 years except: curatively treated non-melanoma skin cancer; or carcinoma in situ, of either cervix or breast, that does not require further treatment. 5. Patients with known HIV, HBV, or HCV infection. 6. Patients with an underlying diagnosis or disease state associated with an increased risk of bleeding. 7. Patients with central nervous system metastases. Baseline CT or MRI scan of brain is required only in the case of clinical suspicion of central nervous system metastases. Patients with evidence of brain involvement, leptomeningeal disease, or seizure disorder are also excluded. 8. Patients may not be treated with known CYP3A4 inhibitors or inducers. Inclusion and Exclusion Criteria for Combination CTO Plus Temodar® (Treatment Arm B): Inclusion Criteria (Treatment Arm B) In addition to the inclusion criteria for adequate organ function as defined for the patients with advanced or metastatic solid tumors, patients enrolled in Arm B (Combination Therapy CTO Plus Temodar-R) must meet the following inclusion criteria: 1. Patients must have histologically proven malignant glioblastoma or other recurrent malignant gliomas. 2. Measurable tumor must be present on gadolinium-enhanced MRI. 3. Patients must have a life expectancy of at least 8 weeks. 4. Patients must have a Performance Status of 0, 1, or 2 (ECOG scale). 5. Patients must be men and women \>=18 years of age. 6. Patients must have recovered from all acute adverse effects (excluding alopecia) of prior therapies to baseline or \<=grade 1 prior to study entry. 7. Patients must have shown unequivocal radiographic evidence for tumor progression by MRI scan to be performed within 14 days prior to registration and must be on a steroid dose that has been stable for at least 5 days. If the steroid dose is increased between the date of imaging and registration, a new baseline MRI scan is required. 8. Patients who have undergone recent resection for recurrent or progressive malignant tumor will be eligible as long as all of the following conditions apply: 1. They have recovered from the effects of surgery 2. The extent of residual disease is assessed post-operatively, with an MRI scan done no later than 96 hours in the immediate post-operative period or at least 4 weeks post-operatively, within 14 days prior to registration. If the 96-hour scan is more than 14 days before registration, the scan needs to be repeated. 9. Patients must have had prior radiation therapy with or without chemotherapy and must have progressed following radiation therapy and must have an interval of \>=12 weeks from the completion of radiation therapy to registration date to minimize the possibility of pseudo-progression. 10. Patients under treatment with anti-epileptic drugs which are not known CYP3A4 inhibitors or inducers must have been receiving a stable dose for at least 2 weeks with no evidence of seizures at the time of registration. Exclusion Criteria (Treatment Arm B) 1. Patients may not have had prior chemotherapy, hormonal therapy, or biologic therapy in the 4 weeks prior to study entry with the exception of mitomycin C or nitrosoureas, for which patients must be 6 weeks from prior treatment. For patients who have been treated with targeted therapy, 5 half-lives of that therapy (or 28 days, whichever is shorter) must have passed prior to enrollment in the study. Additional exceptions: The following specific drugs are permitted shorter recovery times: 14 days for vincristine, 21 days for procarbazine, and 7 days for non-cytotoxic agents such as interferon, tamoxifen, thalidomide, and cis-retinoic acid. 2. Patients may not have any concomitant condition that could compromise the objectives of this study and the patients' compliance and ability to tolerate this therapy and complete at least 2 cycles of therapy, including, but not limited to the following: * Congestive heart failure or uncontrolled angina pectoris, previous history of myocardial infarction within 1 year from study entry, uncontrolled hypertension, or dysrhythmias. * Active infection. * Unstable diabetes mellitus. * Psychiatric disorder that may interfere with consent and/or protocol compliance. 3. Pregnant or breastfeeding women. 4. Patients with another malignancy in the past 3 years except: curatively treated non-melanoma skin cancer; or carcinoma in situ, of either cervix or breast, that does not require further treatment. 5. Patients with known HIV, HBV, or HCV infection. 6. Patients with an underlying diagnosis or disease state associated with an increased risk of bleeding. 7. Uncontrolled seizure activity. 8. Patients may not be treated with known CYP3A4 inhibitors or inducers. Inclusion and Exclusion Criteria for Combination CTO and Temodar® in combination with radiation therapy (Treatment Arm C): Inclusion Criteria (Treatment Arm C) In addition to the inclusion criteria for adequate organ function as defined for the patients with advanced or metastatic solid tumors, patients enrolled in Arm C (Combination Therapy CTO and Temodar® in combination with radiation therapy) must meet the following inclusion criteria: 1. Patients must have histologically proven newly diagnosed glioblastoma or other malignant gliomas. Note: Patients with anaplastic oligodendroglioma with 1p/19q deletion or unknown 1p/19q status are not eligible 2. Patients must have a life expectancy of at least 8 weeks 3. Patients must have a Performance Status of 0, 1, or 2 (ECOG scale). 4. Patients must be men and women \>=18 years of age. 5. Patients must have undergone an MRI scan performed within 14 days prior to registration and must be on a steroid dose that has been stable for at least 5 days. If the steroid dose is increased between the date of imaging and registration, a new baseline MRI is required. 6. Patients under treatment with anti-epileptic drugs which are not known CYP3A4 inhibitors or inducers must have been receiving a stable dose for at least 2 weeks with no evidence of seizures at the time of registration. Exclusion Criteria (Treatment Arm C) 1. Patients may not have had any prior chemotherapy, hormonal therapy, or biologic therapy for gliomas. 2. Patients may not have any concomitant condition that could compromise the objectives of this study and the patients' compliance and ability to tolerate this therapy and complete at least 2 cycles of therapy, including, but not limited to the following: * Congestive heart failure or uncontrolled angina pectoris, previous history of myocardial infarction within 1 year from study entry, uncontrolled hypertension, or dysrhythmias. * Active infection. * Unstable diabetes mellitus. * Psychiatric disorder that may interfere with consent and/or protocol compliance. 3. Pregnant or breastfeeding women. 4. Patients with another malignancy in the past 3 years except: curatively treated non-melanoma skin cancer; or carcinoma in situ, of either cervix or breast, that does not require further treatment. 5. Patients with known HIV, HBV, or HCV infection. 6. Patients with an underlying diagnosis or disease state associated with an increased risk of bleeding. 7. Uncontrolled seizure activity. 8. Patients may not be treated with known CYP3A4 inhibitors or inducers. 9. Patients with anaplastic oligodendroglioma with 1p/19q deletion or unknown 1p/19q status are excluded.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Memorial Sloan-Kettering Cancer Center
New York, New York, 10017, United States
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New York University
New York, New York, 10016, United States
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Oregon Health and Sciences University
Portland, Oregon, 97239, United States
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Providence Cancer Center
Portland, Oregon, 97213, United States
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