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MC5-A Scrambler Therapy or TENS Therapy in Treating Patients With Chemotherapy-Induced Peripheral Neuropathy

MC15C1 Randomized Scrambler Therapy vs TENS for the Treatment of Chemotherapy-Induced Peripheral Neuropathy

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02722434
Enrollment
50
Registered
2016-03-30
Start date
2016-04-13
Completion date
2021-08-26
Last updated
2022-01-12

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

Conditions

Pain, Peripheral Neuropathy, Tingling

Brief summary

This randomized clinical trial studies how well MC5-A scrambler therapy or transcutaneous electrical nerve stimulation (TENS) therapy work in treating patients with chemotherapy-induced peripheral neuropathy (a nerve problem that causes pain, numbness, tingling, swelling, or muscle weakness in different parts of the body). MC5-A scrambler therapy is a type of treatment for nerve pain that uses electrodes placed on the skin, where electricity is carried from the electrodes through the skin and blocks the pain. TENS is a procedure in which mild electric currents are applied to some areas of the skin. It is not yet known whether TENS therapy is more effective than MC5-A scrambler therapy in treating chemotherapy-induced peripheral neuropathy.

Detailed description

PRIMARY OBJECTIVES: I. Evaluate the efficacy of scrambler therapy (MC5-A scrambler therapy) compared to TENS therapy for pain and/or tingling related to chemotherapy-induced peripheral neuropathy (CIPN). II. Evaluate the tolerability of scrambler therapy and compare it to TENS therapy, in this population. III. Evaluate whether scrambler therapy, compared to TENS therapy, can decrease the use of pain medication for CIPN. IV. Explore whether messenger ribonucleic acid (mRNA) gene expression before and after scrambler therapy shows similar findings to what Starkweather et al observed. V. Utilizing high-field magnetic resonance imaging (MRI), to define alterations in functional differences (using resting state blood-oxygen-level dependent \[BOLD\] measures to measure differences in functional connectivity) in treated with the scrambler device in the setting of chemotherapy induced peripheral neuropathy pain. VI. Explore whether scrambler therapy will alter sensation. OUTLINE: Patients are randomized to 1 of 2 treatment arms. ARM I: Patients undergo MC5-A scrambler therapy over 30 minutes for 10 consecutive weekdays. ARM II: Patients undergo TENS therapy over 30 minutes daily for 14 days. Patients in both Arms, may crossover to the opposite Arm for an additional 2 weeks of treatment if they elect. After completion of study treatment, patients are followed up weekly for 8 weeks.

Interventions

OTHERTranscutaneous Electrical Nerve Stimulation

Undergo TENS

OTHERLaboratory Biomarker Analysis

Correlative studies

Undergo Scrambler therapy

OTHERQuestionnaire Administration

Ancillary studies

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Mayo Clinic
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Eligibility

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

Inclusion criteria

* Pain or symptoms of CIPN of \>= 3 months duration, for which the patient wants intervention * Note: neurotoxic chemotherapy must have been completed \>= 3 months prior to registration and there must be no further planned neurotoxic chemotherapy for \> 5 months after registration * Patients have to relate that tingling or pain was at least a four out of ten problem =\< 7 days prior to registration, on a 0-10 scale where zero was no problem and ten was the worst possible problem * Note: the patient is expected to have tingling or pain of at least 4/10 at the time of the first treatment * Eastern Cooperative Oncology Group (ECOG) performance status (PS) = 0, 1, or 2 * Life expectancy \>= 6 months * Ability to complete questionnaire(s) by themselves or with assistance * Ability to provide informed written consent * Case review by the study chair, or designate, as a case where treatment should be tried

Exclusion criteria

* Any of the following: * Pregnant women * Nursing women * Women of childbearing potential who are unwilling to employ adequate contraception * Existing operational implantable drug delivery systems, e.g. Medtronic Synchromed * Existing implantable medical electronic devices, life-supporting medical devices, and medical monitoring devices * Note: metal implants for orthopedic repair, e.g. pins, clips, plates, cages, joint replacements are allowed as are central venous access devices * History of myocardial infarction or ischemic heart disease within the past six months * History of epilepsy, brain damage, use of anticonvulsants for seizure prevention, concurrently using ketamine, symptomatic brain metastases * Skin conditions such as open sores that would prevent proper application of the electrodes * Other medical or other condition(s) that in the opinion of the investigators might compromise the objectives of the study * Currently receiving gabapentin or pregabalin and not willing to be weaned off of these medications prior to Scrambler therapy initiation * Note: it is OK to continue these medications in patients who are receiving TENS * History of peripheral neuropathy prior to receiving neurotoxic chemotherapy * Prior treatment with Scrambler therapy

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants Who Achieve at Least a 50% Reduction in Their Primary Problematic Symptom (Either Pain or Tingling) From Baseline on Day 14Baseline to Day 14The number of participants who achieve at least a 50% reduction in their primary problematic symptom (either pain or tingling) from baseline on Day 14. The participant specified their primary problematic symptom (either pain or tingling) and primary problematic area (either upper or lower extremity) at registration; the respective items used to measure each symptom are considered for this outcome measure. Pain and tingling are measured using either item #6 (How much tingling have you had in your \[fingers or hands; toes or feet\] on average over the past 24 hours?) or item #9 (How much pain have you had in your \[fingers or hands; toes or feet\] on average over the past 24 hours?). Both items use the same scale: 0=None, 10=As bad as can be, with higher scores indicating worse outcome on either the Patient Questionnaire: Before Each Treatment for Upper Extremity Neuropathy or Patient Questionnaire: Before Each Treatment for Lower Extremity Neuropathy at baseline and Day 14.

Secondary

MeasureTime frameDescription
Number of Participants Indicating Yes, No, or Unsure for Therapy Recommendation to Other Patients With Similar Problems on the Subjective Global Impression of Change InstrumentAt 10 weeksThe number of participants indicating 'Yes' for 'Therapy recommendation to other patients with similar problems' on the Subjective Global Impression of Change (SGIC) instrument. The SGIC questionnaire is used to assess the change in quality of life.
Change in Sensory, Motor, and Autonomic Neuropathy Subscale Scores From Baseline to Week 10Up to 10 weeksThe change in Sensory, Motor, and Autonomic Neuropathy Subscale Scores from Baseline to Week 10 will be derived by subtracting the baseline score from the scores at Week 10. The European Organisation for Research and Treatment of Cancer Chemotherapy-Induced Peripheral Neuropathy Module (EORTC QLQ CIPN-20) Instrument contains 20 items assessing sensory (9 items), motor (8 items), and autonomic symptoms (3 items), using a 4-point Likert scale (1 = not at all, 2 = a little, 3 = quite a bit, and 4 = very much). The range of change in subscale scores is -3 to 3. With a total range for sensory being -27 to 27 and motor being -24 to 24 and autonomic being -9 to 9. With negatives meaning a decrease in neuropathy and positive being an increase.
Number of Participants Using Acetaminophen as Pain MedicationUp to 10 weeksThe number of participants using acetaminophen as pain medication is reported below.

Other

MeasureTime frameDescription
Change in Functional MRI (fMRI)Baseline to up to 10 weeksChanges in fMRI following Scrambler therapy will be described in the subset of patients selected for this component of the study.
Change in SensationBaseline to up to 10 weeksDescriptive statistics will be used for the data from Quantitative Sensory Testing.
Change in mRNA Gene ExpressionBaseline to up to 10 weeksIn a descriptive manner, the gene expression will be compared to what was previously reported by Starkweather et al.

Countries

United States

Participant flow

Participants by arm

ArmCount
Arm I (MC5-A Scrambler Therapy)
Patients undergo MC5-A scrambler therapy over 30 minutes for 10 consecutive weekdays.
25
Arm II (TENS Therapy)
Patients undergo TENS therapy over 30 minutes daily for 14 days.
25
Total50

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyWithdrawal After Beginning Treatment03
Overall StudyWithdrawal Prior to Beginning Treatment10

Baseline characteristics

CharacteristicArm I (MC5-A Scrambler Therapy)Arm II (TENS Therapy)Total
Age, Continuous61.0 years61.0 years61.0 years
ECOG Performance Status
0
15 Participants14 Participants29 Participants
ECOG Performance Status
1
9 Participants10 Participants19 Participants
ECOG Performance Status
2
1 Participants1 Participants2 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants1 Participants1 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
3 Participants0 Participants3 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants0 Participants1 Participants
Race (NIH/OMB)
White
21 Participants24 Participants45 Participants
Sex: Female, Male
Female
17 Participants17 Participants34 Participants
Sex: Female, Male
Male
8 Participants8 Participants16 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 240 / 25
other
Total, other adverse events
0 / 241 / 25
serious
Total, serious adverse events
0 / 240 / 25

Outcome results

Primary

Number of Participants Who Achieve at Least a 50% Reduction in Their Primary Problematic Symptom (Either Pain or Tingling) From Baseline on Day 14

The number of participants who achieve at least a 50% reduction in their primary problematic symptom (either pain or tingling) from baseline on Day 14. The participant specified their primary problematic symptom (either pain or tingling) and primary problematic area (either upper or lower extremity) at registration; the respective items used to measure each symptom are considered for this outcome measure. Pain and tingling are measured using either item #6 (How much tingling have you had in your \[fingers or hands; toes or feet\] on average over the past 24 hours?) or item #9 (How much pain have you had in your \[fingers or hands; toes or feet\] on average over the past 24 hours?). Both items use the same scale: 0=None, 10=As bad as can be, with higher scores indicating worse outcome on either the Patient Questionnaire: Before Each Treatment for Upper Extremity Neuropathy or Patient Questionnaire: Before Each Treatment for Lower Extremity Neuropathy at baseline and Day 14.

Time frame: Baseline to Day 14

Population: All Participants

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm I (MC5-A Scrambler Therapy)Number of Participants Who Achieve at Least a 50% Reduction in Their Primary Problematic Symptom (Either Pain or Tingling) From Baseline on Day 1410 Participants
Arm II (TENS Therapy)Number of Participants Who Achieve at Least a 50% Reduction in Their Primary Problematic Symptom (Either Pain or Tingling) From Baseline on Day 145 Participants
p-value: 0.1228Chi-squared
Secondary

Change in Sensory, Motor, and Autonomic Neuropathy Subscale Scores From Baseline to Week 10

The change in Sensory, Motor, and Autonomic Neuropathy Subscale Scores from Baseline to Week 10 will be derived by subtracting the baseline score from the scores at Week 10. The European Organisation for Research and Treatment of Cancer Chemotherapy-Induced Peripheral Neuropathy Module (EORTC QLQ CIPN-20) Instrument contains 20 items assessing sensory (9 items), motor (8 items), and autonomic symptoms (3 items), using a 4-point Likert scale (1 = not at all, 2 = a little, 3 = quite a bit, and 4 = very much). The range of change in subscale scores is -3 to 3. With a total range for sensory being -27 to 27 and motor being -24 to 24 and autonomic being -9 to 9. With negatives meaning a decrease in neuropathy and positive being an increase.

Time frame: Up to 10 weeks

Population: Participants who completed all subscale items from the EORTC QLQ CIPN-20 at baseline and Week 10 are included in this analysis.

ArmMeasureGroupValue (MEDIAN)
Arm I (MC5-A Scrambler Therapy)Change in Sensory, Motor, and Autonomic Neuropathy Subscale Scores From Baseline to Week 10Sensory Subscale-0.4 score on a scale
Arm I (MC5-A Scrambler Therapy)Change in Sensory, Motor, and Autonomic Neuropathy Subscale Scores From Baseline to Week 10Motor Subscale-0.1 score on a scale
Arm I (MC5-A Scrambler Therapy)Change in Sensory, Motor, and Autonomic Neuropathy Subscale Scores From Baseline to Week 10Autonomic Subscale0.0 score on a scale
Arm II (TENS Therapy)Change in Sensory, Motor, and Autonomic Neuropathy Subscale Scores From Baseline to Week 10Autonomic Subscale0.0 score on a scale
Arm II (TENS Therapy)Change in Sensory, Motor, and Autonomic Neuropathy Subscale Scores From Baseline to Week 10Sensory Subscale-0.6 score on a scale
Arm II (TENS Therapy)Change in Sensory, Motor, and Autonomic Neuropathy Subscale Scores From Baseline to Week 10Motor Subscale-0.3 score on a scale
Comparison: Sensory Subscalep-value: 0.79Wilcoxon (Mann-Whitney)
Comparison: Motor Subscalep-value: 0.43Wilcoxon (Mann-Whitney)
Comparison: Autonomic Subscalep-value: 0.97Wilcoxon (Mann-Whitney)
Secondary

Number of Participants Indicating Yes, No, or Unsure for Therapy Recommendation to Other Patients With Similar Problems on the Subjective Global Impression of Change Instrument

The number of participants indicating 'Yes' for 'Therapy recommendation to other patients with similar problems' on the Subjective Global Impression of Change (SGIC) instrument. The SGIC questionnaire is used to assess the change in quality of life.

Time frame: At 10 weeks

Population: Participants who completed the SGIC 'Therapy recommendation to other patients with similar problems' item at Week 10 are included in this analysis.

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Arm I (MC5-A Scrambler Therapy)Number of Participants Indicating Yes, No, or Unsure for Therapy Recommendation to Other Patients With Similar Problems on the Subjective Global Impression of Change InstrumentYes16 Participants
Arm I (MC5-A Scrambler Therapy)Number of Participants Indicating Yes, No, or Unsure for Therapy Recommendation to Other Patients With Similar Problems on the Subjective Global Impression of Change InstrumentNo0 Participants
Arm I (MC5-A Scrambler Therapy)Number of Participants Indicating Yes, No, or Unsure for Therapy Recommendation to Other Patients With Similar Problems on the Subjective Global Impression of Change InstrumentUnsure5 Participants
Arm II (TENS Therapy)Number of Participants Indicating Yes, No, or Unsure for Therapy Recommendation to Other Patients With Similar Problems on the Subjective Global Impression of Change InstrumentYes7 Participants
Arm II (TENS Therapy)Number of Participants Indicating Yes, No, or Unsure for Therapy Recommendation to Other Patients With Similar Problems on the Subjective Global Impression of Change InstrumentNo7 Participants
Arm II (TENS Therapy)Number of Participants Indicating Yes, No, or Unsure for Therapy Recommendation to Other Patients With Similar Problems on the Subjective Global Impression of Change InstrumentUnsure3 Participants
p-value: 0.004Fisher Exact
Secondary

Number of Participants Using Acetaminophen as Pain Medication

The number of participants using acetaminophen as pain medication is reported below.

Time frame: Up to 10 weeks

Population: All Participants

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm I (MC5-A Scrambler Therapy)Number of Participants Using Acetaminophen as Pain Medication8 Participants
Arm II (TENS Therapy)Number of Participants Using Acetaminophen as Pain Medication9 Participants
Other Pre-specified

Change in Functional MRI (fMRI)

Changes in fMRI following Scrambler therapy will be described in the subset of patients selected for this component of the study.

Time frame: Baseline to up to 10 weeks

Other Pre-specified

Change in mRNA Gene Expression

In a descriptive manner, the gene expression will be compared to what was previously reported by Starkweather et al.

Time frame: Baseline to up to 10 weeks

Other Pre-specified

Change in Sensation

Descriptive statistics will be used for the data from Quantitative Sensory Testing.

Time frame: Baseline to up to 10 weeks

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