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Electrical Stimulation Therapy Using the MC5-A Scrambler in Reducing Peripheral Neuropathy Caused by Chemotherapy

The Efficacy of MC5-A (Scrambler) Therapy in the Management of Chemotherapy-Induced Peripheral Neuropathy: A Phase II Pilot Trial

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00952848
Enrollment
18
Registered
2009-08-06
Start date
2009-06-12
Completion date
2010-06-30
Last updated
2017-03-29

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

Conditions

Chemotherapeutic Agent Toxicity, Neurotoxicity, Pain, Peripheral Neuropathy, Unspecified Adult Solid Tumor, Protocol Specific

Keywords

pain, neurotoxicity, chemotherapeutic agent toxicity, unspecified adult solid tumor, protocol specific, peripheral neuropathy

Brief summary

RATIONALE: Electronic stimulation using a MC5-A Scrambler may help relieve pain in patients who develop peripheral neuropathy while undergoing chemotherapy treatments for cancer. PURPOSE: This phase II trial is studying how well MC5-A Scrambler therapy works in reducing peripheral neuropathy caused by chemotherapy.

Detailed description

OBJECTIVES: Primary * To determine if MC5-A Scrambler therapy will improve the pain associated with chemotherapy-induced peripheral neuropathy in cancer patients by 20%. Secondary * To evaluate the effect of MC5-A therapy on specific pain and neuropathy scales. * To evaluate the effect of MC5-A therapy on overall quality of life. * To evaluate the effect of MC5-A therapy on other pain drugs used. * To evaluate the toxicities of MC5-A therapy. OUTLINE: Patients undergo gel electrode application on the skin in the most pain-free of the pain-affected area. Patients undergo treatment with the MC5-A Scrambler machine over 60 minutes once daily on days 1-10. On day 1, the treatment intensity is increased every 10 minutes to the maximum intensity individually bearable by the patient without any input of pain or discomfort. The patient should feel the disappearance of the pain during treatment as a sign that the proper nerve pathway(s) has (have) been correctly identified. Subsequent treatments begin at the highest intensity tolerated at the previous treatment. Patients with no improvement after 3 treatments discontinue treatment. Patients complete questionnaires about symptoms, pain, and quality of life periodically. After completion of study treatment, patients are followed up at 2 and 4 weeks, monthly for 3 months, and at 6 months.

Interventions

OTHERquestionnaire administration

Pain Rating Score

OTHERSensory Neuropathy Scale instrument

ECOG Common Toxicity Criteria for Sensory Neuropathy scale

OTHERQuality of Life instrument

Uniscale 0-100 scale global quality of life

DEVICEMC5-A Scrambler device

Electrical stimulation for 60 minutes

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Virginia Commonwealth University
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 120 Years
Healthy volunteers
No

Inclusion criteria

DISEASE CHARACTERISTICS: * Chemotherapy-induced peripheral neuropathy (CIPN) meeting the following criteria: * More than 4 weeks since prior neurotoxic chemotherapy including taxanes (e.g., paclitaxel or docetaxel), platinum-based compounds (e.g., carboplatin, cis-platinum, oxaliplatin), vinca-alkaloids (e.g., vincristine, vinblastine, or vinorelbine), or proteosome inhibitors (e.g., bortezomib) * Pain or symptoms of peripheral neuropathy for ≥ 1 month attributed to CIPN * Pain stable for ≥ 2 weeks * Average daily pain rating of ≥ 5 out of 10 using the pain numerical rating scale (0 is no pain and 10 is worst pain possible) * No symptomatic brain metastases PATIENT CHARACTERISTICS: * ECOG performance status 0-2 * Life expectancy ≥ 3 months * Not pregnant or nursing * Negative pregnancy test * Fertile patients must use effective contraception * No history of an allergic reaction or intolerance to transcutaneous electronic nerve stimulation * No pacemaker or implantable drug-delivery system (e.g., Medtronic Synchromed) * No heart stent or vena cava clips * No history of epilepsy or brain damage * No other identified causes of painful paresthesias existing before chemotherapy (e.g., radiation or malignant plexopathy, lumbar or cervical radiculopathy, pre-existing peripheral neuropathy of another etiology \[e.g., B12 deficiency, AIDS, monoclonal gammopathy, diabetes, heavy metal poisoning amyloidosis, syphilis, hyperthyroidism, hypothyroidism, inherited neuropathy, etc.\]) * No skin conditions (e.g., open sores) that would prevent proper application of the electrodes * No other medical or other conditions that, in the opinion of the investigators, might compromise the objectives of the study PRIOR CONCURRENT THERAPY: * See Disease Characteristics * At least 30 days since prior and no concurrent investigational agents for pain control * More than 4 weeks since prior and no concurrent celiac plexus block or other neurolytic pain control treatment * No prior or concurrent anti-convulsants * No concurrent neurotoxic or potentially neurotoxic chemotherapy * Concurrent pain treatments allowed provided the following criteria are met: * Pain is not satisfactorily controlled * Dose of the other medication has been stable for ≥ 4 weeks

Design outcomes

Primary

MeasureTime frameDescription
Change in Pain Score15 daysChange in Neumeric Rating Score for Pain as measured by a Numeric Pain Rating scale between day 0 to day 15. Scale is 0 (none) to 10 (severe)

Secondary

MeasureTime frameDescription
Effect of MC5-A on Pain and Neuropathy2 weeksChange on pain and neuropathy as measured by the Eastern Cooperative Oncology Group (ECOG) Common Toxicity Criteria for Sensory Neuropathy scale,0=none to 4=paralysis; the World Health Organization (WHO) Classification Scale, 0=none to 4=paralysis; and the Brief Pain Inventory-Short Form, 0=none to 4=most intense pain imaginable. Scores will be averaged.
Effect of MC5-A on Morphine Oral Equivalent Doses Used Before and After MC5-A Therapy2 weeksThe change in overal equivalent doses (all narcotic doses will be converted to morphine oral equivalent doses ie as mg/24hours. (All opiates taken will be recorded for the full 24 hours preceding the visit or phone call. All opiates will be converted to the pnmorphine equivalent using the Morphine oral dose equivalents (MOED). The total MOEDs taken during the 24 hours will be the sum of all opiates taken) used before intervention
Toxicity of MC5-A Therapy on Global Quality of Life Using the Uniscale Instrument2 weeksChange on global quality of life. The global quality of life will improve as measured by the Uniscale Linear Analog Scale Assessment (LASA) quality of life scale 0=as bad as it can be to 10=as good as it can be. Scores will be averaged.

Participant flow

Recruitment details

Dates of recruitment: 06/12/2009 - 10/26/2009 Location of recruitment: medical clinic

Participants by arm

ArmCount
MC5-A Scrambler Instrument
Treatment of chronic neuropathic pain with the MC5-A device
18
Total18

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyWithdrawal by Subject4

Baseline characteristics

CharacteristicMC5-A Scrambler Instrument
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
0 Participants
Age, Categorical
Between 18 and 65 years
18 Participants
Age, Continuous60 years
STANDARD_DEVIATION 5
Region of Enrollment
United States
18 participants
Sex: Female, Male
Female
14 Participants
Sex: Female, Male
Male
4 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
0 / 18
serious
Total, serious adverse events
1 / 18

Outcome results

Primary

Change in Pain Score

Change in Neumeric Rating Score for Pain as measured by a Numeric Pain Rating scale between day 0 to day 15. Scale is 0 (none) to 10 (severe)

Time frame: 15 days

Population: Patients treated with MC5A devise for 10 consectuvive days

ArmMeasureValue (MEDIAN)
MC5-A Pain Treatment DeviceChange in Pain Score2.4 units on a scale
Secondary

Effect of MC5-A on Morphine Oral Equivalent Doses Used Before and After MC5-A Therapy

The change in overal equivalent doses (all narcotic doses will be converted to morphine oral equivalent doses ie as mg/24hours. (All opiates taken will be recorded for the full 24 hours preceding the visit or phone call. All opiates will be converted to the pnmorphine equivalent using the Morphine oral dose equivalents (MOED). The total MOEDs taken during the 24 hours will be the sum of all opiates taken) used before intervention

Time frame: 2 weeks

Population: Patients treated with MC5A devise for 10 consectuvive days

ArmMeasureValue (MEDIAN)
MC5-A Pain Treatment DeviceEffect of MC5-A on Morphine Oral Equivalent Doses Used Before and After MC5-A Therapy-41.25 mg/24hr
Secondary

Effect of MC5-A on Pain and Neuropathy

Change on pain and neuropathy as measured by the Eastern Cooperative Oncology Group (ECOG) Common Toxicity Criteria for Sensory Neuropathy scale,0=none to 4=paralysis; the World Health Organization (WHO) Classification Scale, 0=none to 4=paralysis; and the Brief Pain Inventory-Short Form, 0=none to 4=most intense pain imaginable. Scores will be averaged.

Time frame: 2 weeks

Population: Patients treated with MC5A devise for 10 consectuvive days

ArmMeasureValue (MEDIAN)
MC5-A Pain Treatment DeviceEffect of MC5-A on Pain and Neuropathy1.3 units on a scale
Secondary

Toxicity of MC5-A Therapy on Global Quality of Life Using the Uniscale Instrument

Change on global quality of life. The global quality of life will improve as measured by the Uniscale Linear Analog Scale Assessment (LASA) quality of life scale 0=as bad as it can be to 10=as good as it can be. Scores will be averaged.

Time frame: 2 weeks

Population: Patients treated with MC5A devise for 10 consectuvive days

ArmMeasureValue (MEDIAN)
MC5-A Pain Treatment DeviceToxicity of MC5-A Therapy on Global Quality of Life Using the Uniscale Instrument0.08 units on a scale

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