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Glutamic Acid in Reducing Nerve Damage Caused by Vincristine in Young Patients With Cancer

Glutamic Acid to Decrease Vincristine Toxicity in Children With Cancer

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00369564
Enrollment
250
Registered
2006-08-29
Start date
2007-05-31
Completion date
2012-11-30
Last updated
2021-08-11

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

Conditions

Kidney Cancer, Leukemia, Lymphoma, Neurotoxicity, Peripheral Neuropathy, Sarcoma

Keywords

neurotoxicity, peripheral neuropathy, stage I Wilms tumor, stage II Wilms tumor, stage III Wilms tumor, stage IV Wilms tumor, stage V Wilms tumor, previously untreated childhood rhabdomyosarcoma, childhood grade III lymphomatoid granulomatosis, childhood diffuse large cell lymphoma, childhood immunoblastic large cell lymphoma, stage I childhood large cell lymphoma, stage II childhood large cell lymphoma, stage III childhood large cell lymphoma, stage IV childhood large cell lymphoma, stage I childhood lymphoblastic lymphoma, stage II childhood lymphoblastic lymphoma, stage III childhood lymphoblastic lymphoma, stage IV childhood lymphoblastic lymphoma, childhood Burkitt lymphoma, stage I childhood small noncleaved cell lymphoma, stage II childhood small noncleaved cell lymphoma, stage III childhood small noncleaved cell lymphoma, stage IV childhood small noncleaved cell lymphoma, untreated childhood acute lymphoblastic leukemia

Brief summary

RATIONALE: Glutamic acid may help lessen or prevent nerve damage caused by vincristine. It is not yet known whether glutamic acid is more effective than a placebo in preventing nerve damage in patients receiving vincristine for Wilms' tumor, rhabdomyosarcoma, acute lymphoblastic leukemia, or non-Hodgkin's lymphoma. PURPOSE: This randomized phase III trial is studying glutamic acid to see how well it works compared to a placebo in reducing nerve damage caused by vincristine in young patients receiving vincristine for Wilms' tumor, rhabdomyosarcoma, acute lymphoblastic leukemia, or non-Hodgkin's lymphoma.

Detailed description

OBJECTIVES: Primary * Compare the effect of glutamic acid vs placebo, in terms of decreasing neurotoxicity as measured by a scored neurologic examination, in young patients undergoing vincristine-containing treatment for Wilms' tumor, rhabdomyosarcoma, acute lymphoblastic leukemia, or non-Hodgkin's lymphoma. Secondary * Compare the frequency and types of neurotoxicity observed in patients treated with glutamic acid versus placebo. * Determine if a greater proportion of patients receiving glutamic acid are able to receive 100% of their scheduled doses of vincristine versus those not treated with glutamic acid. OUTLINE: This is a randomized, double-blind, placebo-controlled, multicenter study. Patients are stratified according to disease and duration of planned vincristine-containing treatment (Wilms' tumor or rhabdomyosarcoma with treatment planned for ≥ 9 consecutive weeks \[stratum 1\] vs acute lymphoblastic leukemia or non-Hodgkin's lymphoma with treatment planned for ≥ 4 consecutive weeks \[stratum 2\]). Patients are randomized to 1 of 2 treatment arms. * Arm I: Patients receive oral glutamic acid 3 times daily beginning prior to the first dose of vincristine and continuing through week 5 (stratum 2) for a total of 4 doses of vincristine or week 10 (stratum 1) for a total of 9 doses of vincristine. * Arm II: Patients receive oral placebo 3 times daily beginning prior to the first dose of vincristine and continuing through week 5 (stratum 2) for a total of 4 doses of vincristine or week 10 (stratum 1) for a total of 9 doses of vincristine. All patients undergo neurologic examination at baseline and at 5 weeks. Patients in stratum 1 also undergo additional neurologic examination at week 10. PROJECTED ACCRUAL: A total of 250 patients will be accrued for this study.

Interventions

Given orally 3 times daily

OTHERplacebo

Given orally 3 times daily

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Children's Oncology Group
CollaboratorNETWORK
University of South Florida
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
3 Years to 20 Years
Healthy volunteers
No

Inclusion criteria

* Patients ≥ 3 and \< 21 years of age at the time of study registration. * Patients newly diagnosed with Wilm's tumor and scheduled to receive at least 9 consecutive weeks of chemotherapy with a vincristine-containing regimen. * Patients newly diagnosed with rhabdomyosarcoma and scheduled to receive at least 9 consecutive weeks of chemotherapy with a vincristine-containing regimen. * Patients newly diagnosed with ALL and scheduled to receive 4 consecutive weeks of chemotherapy with a vincristine-containing regimen with accompanying steroid therapy. * Patients newly diagnosed with Non- Hodgkins Lymphoma (NHL) and scheduled to receive 4 consecutive weeks of chemotherapy with a vincristine-containing regimen with accompanying steroid therapy. * Patients with no underlying neuromuscular disease or peripheral neuropathy

Exclusion criteria

* Abnormal baseline peripheral neurologic exam (i.e. or peripheral neuropathy) * Patients with: * seizure disorders * primary intracranial malignancy * family history of Charcot Marie Tooth Disease * a recent history of GuillianBarré26 * Patients receiving concomitant itraconazole are at risk for increased vincristine toxicity and therefore are ineligible. * Patients who are regularly using laxatives or stool softeners for constipation at the time of enrollment are not eligible to participate in the study. Likewise, since prevention of neuro-constipation will be evaluated, patients with an ongoing history of constipation that has required frequent use of laxatives or stool softeners should not be enrolled. * Patients should not be scheduled to receive laxatives or stool softeners prophylactically to prevent constipation, as the prevention of neuro-constipation will be evaluated in this study; however, when patients show signs of developing constipation while on chemotherapy, as determined by the treating physician, they may be treated with laxatives or stool softeners at the clinician's discretion. Use of laxatives or stool softeners will be documented on the concomitant medication log.

Design outcomes

Primary

MeasureTime frameDescription
Neurotoxicity as Measured by a Scored Neurologic Examination at Baseline, 5 Weeks, and 10 Weeks (if Applicable)10 weeksA neurological exam will be completed at baseline and at study week 5 for both strata. An additional exam at week 10 will be done for patients in Stratum 1. Additional exams will be done at any time if the treating oncologist deems it clinically necessary . Neurotoxicity will be scored using a standardized neurological exam form developed for the study that is based on the Modified Balis Pediatric Scale of Peripheral Neuropathies. Treatment groups will be compared with respect to the proportion experiencing a grade 2 or higher toxicity from the following list of neurologic toxicities captured on the Neurologic Exam Form including sensory neuropathy, motor neuropathy, laryngeal nerve, constipation/neuro-constipation, jaw pain, or other specified abnormalities noted by the attending physician. Percentage of patients with one or more Grade 2 or higher noted neurotoxicity symptoms on any item in the Balis scale will compared between arms.

Secondary

MeasureTime frameDescription
Number of Participants With Neurotoxicity Observed10 weeksNumber of participants with neurotoxicity observed treated with l-glutamic acid hydrochloride as compared to the number of participants with neurotoxicity observed in the placebo control group
Ability to Receive All Scheduled Doses of Vincristine10 weeksWe will determine if a greater proportion of patients receiving l-glutamic acid hydrochloride are able to receive 100% of their scheduled doses of vincristine as compared to those in the placebo control group
Types of Neurotoxicities10 WeeksTypes of neurotoxicities reported. Each patient was only counted once for each type of neurotoxicity, but a patient could be counted in more than 1 type of neurotoxicity. For example, if a patient experienced constipation 3 times, they are included once for constipation. If a patient experienced sensory changes and motor changes, they are included once for sensory changes and once for motor changes.

Countries

United States

Participant flow

Participants by arm

ArmCount
Arm I Glutamic Acid
Patients receive oral glutamic acid 3 times daily beginning prior to the first dose of vincristine and continuing through week 5 (stratum 2) or week 10 (stratum 1).
127
Arm II Placebo
Patients receive oral placebo 3 times daily beginning prior to the first dose of vincristine and continuing through week 5 (stratum 2) or week 10 (stratum 1).
123
Total250

Baseline characteristics

CharacteristicArm I Glutamic AcidArm II PlaceboTotal
Age, Categorical
<=18 years
123 Participants117 Participants240 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
4 Participants6 Participants10 Participants
Age, Continuous8.5 years
STANDARD_DEVIATION 4.8
8.6 years
STANDARD_DEVIATION 4.9
8.6 years
STANDARD_DEVIATION 4.9
Region of Enrollment
United States
127 participants123 participants250 participants
Sex/Gender, Customized
Gender- Female
46 participants53 participants99 participants
Sex/Gender, Customized
Gender- Male
81 participants69 participants150 participants
Sex/Gender, Customized
Gender Not Reported
0 participants1 participants1 participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
16 / 1275 / 123
serious
Total, serious adverse events
9 / 1276 / 123

Outcome results

Primary

Neurotoxicity as Measured by a Scored Neurologic Examination at Baseline, 5 Weeks, and 10 Weeks (if Applicable)

A neurological exam will be completed at baseline and at study week 5 for both strata. An additional exam at week 10 will be done for patients in Stratum 1. Additional exams will be done at any time if the treating oncologist deems it clinically necessary . Neurotoxicity will be scored using a standardized neurological exam form developed for the study that is based on the Modified Balis Pediatric Scale of Peripheral Neuropathies. Treatment groups will be compared with respect to the proportion experiencing a grade 2 or higher toxicity from the following list of neurologic toxicities captured on the Neurologic Exam Form including sensory neuropathy, motor neuropathy, laryngeal nerve, constipation/neuro-constipation, jaw pain, or other specified abnormalities noted by the attending physician. Percentage of patients with one or more Grade 2 or higher noted neurotoxicity symptoms on any item in the Balis scale will compared between arms.

Time frame: 10 weeks

Population: Patients reporting baseline and post-baseline observation

ArmMeasureValue (NUMBER)Dispersion
Arm I Glutamic AcidNeurotoxicity as Measured by a Scored Neurologic Examination at Baseline, 5 Weeks, and 10 Weeks (if Applicable)26 percentage of participants95% Confidence Interval 4.4
Arm II PlaceboNeurotoxicity as Measured by a Scored Neurologic Examination at Baseline, 5 Weeks, and 10 Weeks (if Applicable)34 percentage of participants95% Confidence Interval 4.5
Secondary

Ability to Receive All Scheduled Doses of Vincristine

We will determine if a greater proportion of patients receiving l-glutamic acid hydrochloride are able to receive 100% of their scheduled doses of vincristine as compared to those in the placebo control group

Time frame: 10 weeks

Population: Number in stratum 1 and stratum 2 that completed

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm I Glutamic AcidAbility to Receive All Scheduled Doses of Vincristine84 Participants
Arm II PlaceboAbility to Receive All Scheduled Doses of Vincristine100 Participants
Secondary

Number of Participants With Neurotoxicity Observed

Number of participants with neurotoxicity observed treated with l-glutamic acid hydrochloride as compared to the number of participants with neurotoxicity observed in the placebo control group

Time frame: 10 weeks

Population: Stratum 2 with a \>= grade 2 neurotoxicity

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm I Glutamic AcidNumber of Participants With Neurotoxicity Observed21 Participants
Arm II PlaceboNumber of Participants With Neurotoxicity Observed25 Participants
Secondary

Types of Neurotoxicities

Types of neurotoxicities reported. Each patient was only counted once for each type of neurotoxicity, but a patient could be counted in more than 1 type of neurotoxicity. For example, if a patient experienced constipation 3 times, they are included once for constipation. If a patient experienced sensory changes and motor changes, they are included once for sensory changes and once for motor changes.

Time frame: 10 Weeks

Population: Participants who returned a post baseline Neurotox Questionnaire

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Arm I Glutamic AcidTypes of NeurotoxicitiesSensory Changes11 Participants
Arm I Glutamic AcidTypes of NeurotoxicitiesJaw Pain4 Participants
Arm I Glutamic AcidTypes of NeurotoxicitiesMotor Changes10 Participants
Arm I Glutamic AcidTypes of NeurotoxicitiesLaryngeal Nerve Dysfunction2 Participants
Arm I Glutamic AcidTypes of NeurotoxicitiesConstipation11 Participants
Arm II PlaceboTypes of NeurotoxicitiesLaryngeal Nerve Dysfunction1 Participants
Arm II PlaceboTypes of NeurotoxicitiesConstipation14 Participants
Arm II PlaceboTypes of NeurotoxicitiesSensory Changes13 Participants
Arm II PlaceboTypes of NeurotoxicitiesMotor Changes13 Participants
Arm II PlaceboTypes of NeurotoxicitiesJaw Pain2 Participants

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