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Scrambler Therapy in Treating Pain and Peripheral Neuropathy in Patients Previously Treated With Chemotherapy

This study has been completed.
Information provided by (Responsible Party):
Mayo Clinic Identifier:
First received: March 30, 2011
Last updated: January 6, 2016
Last verified: January 2016
This pilot clinical trial studies scrambler therapy in treating pain and peripheral neuropathy in patients previously treated with chemotherapy. Scrambler therapy may help relieve pain from peripheral neuropathy caused by chemotherapy

Condition Intervention
Peripheral Neuropathy
Other: scrambler therapy
Other: questionnaire administration
Procedure: management of therapy complications

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Supportive Care
Official Title: Scrambler Therapy for the Treatment of Chemotherapy Induced Peripheral Neuropathy: An Open Access Trial

Resource links provided by NLM:

Further study details as provided by Mayo Clinic:

Primary Outcome Measures:
  • Change in pain on a 0-10 numerical rating scale. [ Time Frame: 3 years ]

Secondary Outcome Measures:
  • Changes in neurologic function will be done by Neurometer Current Perception Threshold (CPT) testing and with a Rydel-Seiffer graduated tuning fork. [ Time Frame: 3 years ]
    Patients will also undergo neurologic function testing. This will be done in an exploratory measure to try to correlate changes in the patient reported outcome instrument data with changes in the different measures of neurologic function. The two measures will be Neurometer Current Perception Threshold (CPT) Testing and testing with a Rydel-Seiffer graduated tuning fork.

Enrollment: 194
Study Start Date: March 2011
Study Completion Date: December 2015
Primary Completion Date: December 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Supportive care (pain therapy)
Patients undergo scrambler therapy for 30 minutes daily for up to 10 consecutive days. Treatment continues in the absence of unacceptable toxicity.
Other: scrambler therapy
Undergo scrambler therapy
Other: questionnaire administration
Ancillary studies
Procedure: management of therapy complications
Undergo scrambler therapy
Other Name: complications of therapy, management of

Detailed Description:


I. To record the types of patients that we treat, along with the reported efficacy and potential toxicity associated with scrambler therapy.

II. To get experience with patient reported outcome measurement tools that we use in this trial, including a report of analgesic use.

OUTLINE: Patients undergo scrambler therapy for 30 minutes daily for up to 10 consecutive days. Treatment continues in the absence of unacceptable toxicity. After completion of study treatment, patients are followed up for 10 weeks.

III. To explore neurologic testing changes in patients receiving scrambler therapy.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Pain or symptoms of neuropathy or pain of >= 1 month (30 days) duration for which the patient wants intervention
  • Participants have to relate that tingling or pain was at least a four out of ten problem during the prior week, on a 0-10 scale where zero was no problem and ten was the worst possible problem and 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 >= 3 months (90 days)
  • Case review by the study chair, or designate, as a case where treatment should be tried.
  • Ability to complete questionnaire(s) by themselves or with assistance - Ability to provide informed written consent

Exclusion Criteria:

  • Pregnant women
  • Patients with implantable drug delivery systems, e.g. Medtronic Synchromed
  • Patients with heart stents or metal implants such as pacemakers, automatic defibrillators, aneurysm clips, vena cava clips and skull plates; (metal implants for orthopedic repair, e.g. pins, clips, plates, cages, joint replacements are allowed as are central venous access devices)
  • Patients with a history of myocardial infarction or ischemic heart disease within the past six months
  • Patients with history of epilepsy, brain damage, use of anti-convulsants for seizure prevention, concurrently using ketamine, symptomatic brain metastases; Note: anti-convulsant use is allowed for neuropathy and heart failure (HF) if on a stable dose
  • 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 on gabapentin or pregabalin Note: (because of data that support that patients don't do as well when on gabapentin or pregabalin, all patients on these medications will be weaned off of them prior to study initiation. The study team will provide instructions on how to do this).
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Please refer to this study by its identifier: NCT01347723

United States, Minnesota
Mayo Clinic
Rochester, Minnesota, United States, 55905
Sponsors and Collaborators
Mayo Clinic
Principal Investigator: Charles Loprinzi Mayo Clinic
  More Information

Responsible Party: Mayo Clinic Identifier: NCT01347723     History of Changes
Other Study ID Numbers: MC10CC
NCI-2011-00339 ( Registry Identifier: CTRP (Clinical Trial Reporting Program) )
MC10CC ( Other Identifier: Mayo Clinic Cancer Center )
11-000675 ( Other Identifier: Mayo Clinic IRB )
NCI-2011-00339 ( Registry Identifier: NCI CTRP )
Study First Received: March 30, 2011
Last Updated: January 6, 2016

Additional relevant MeSH terms:
Peripheral Nervous System Diseases
Neuromuscular Diseases
Nervous System Diseases processed this record on April 28, 2017