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CompletedNCT04403802Updated Aug 29, 2025Results posted

Voxx Human Performance Technology Socks for Chemotherapy-Induced Peripheral Neuropathy

An interventional study of Voxx Human Performance Technology Socks and Placebo Socks in Neuropathy;Peripheral, Chemotherapy-induced Peripheral Neuropathy and Neuropathy, sponsored by Arash Asher, MD. Completed at 2 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-08-29.

Sponsored by Arash Asher, MD · Not applicable, Interventional, and Supportive care

Phase
Not applicable
Study type
Interventional
Enrollment
28
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This is a double blind, randomized, crossover pilot study of Voxx Human Performance Technology Socks versus placebo socks for the treatment of chemotherapy-induced peripheral neuropathy in patients with cancer. Patients will be randomized 1:1 to one of the following regimens:

  • Arm A: Continuous wear of Voxx Human Performance Technology Socks for 2 weeks, followed by continuous wear of placebo socks for 2 weeks (separated by a 2-week washout period)
  • Arm B: Continuous wear of placebo socks for 2 weeks, followed by continuous wear of Voxx Human Performance Technology Socks for 2 weeks (separated by a 2-week washout period)

Patients will be evaluated at three time points using an objective neuropathy assessment as well as self-report questionnaires assessing chemotherapy-induced peripheral neuropathy, quality of life, and cancer-related symptoms.

02

Conditions studied

  • Neuropathy;Peripheral
  • Chemotherapy-induced Peripheral Neuropathy
  • Neuropathy

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Keywords

  • Chemo-induced Peripheral Neuropathy
  • Voxx Socks
  • Voxx Human Performance Technology
  • Voxx HPT
03

In context

Neuritis

73 studies on the registry are indexed under Neuritis; 20 are open to participants now.

This study's enrollment of 28 is below the median of 48 across 51 interventional studies indexed under Neuritis.

Browse Neuritis studies →

Lead sponsor

Arash Asher, MD is the lead sponsor of 5 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Diagnosed with cancer, stage 1-4.
  • Completed taxane- or platinum-based chemotherapy, vinca alkaloids, or bortezomib at least three months (90 days) ago. Current use of anti-estrogen therapy, Herceptin, or PARP inhibitors is okay.
  • Clinical diagnosis of chemotherapy-induced peripheral neuropathy by clinician. This will be based on symptom history (paresthesias, dysesthesias, allodynia), loss of deep tendon reflexes, decreased vibratory sensation, or the presence of symmetrical stocking-glove numbness or paresthesias beginning after neurotoxic chemotherapy.
  • Self-reported average neuropathic pain score of at least 4 on a 10-point scale over the past 1 month.
  • Age ≥ 18 years
  • Concomitant use of analgesics is permitted if the dose has been stable for at least 2 weeks prior to study enrollment (no new analgesics have been added, discontinued, or changed in the 2 weeks prior to randomization).
  • Written obtained from subject and ability for subject to comply with the requirements of the study.

Exclusion criteria

Exclusion Criteria:

  • Syphilis, alcoholic neuropathy, diabetic neuropathy, neurological disorders, brain injury, or stroke, as assessed by the treating physician.
  • Neuropathy related to abnormal thyroid stimulating hormone or cobalamin levels as assessed by treating physician.
  • Current severe depression, suicidal ideation, bipolar disease, alcohol abuse, or major eating disorder, as assessed by the treating physician.
  • Currently participating in another chemotherapy-induced peripheral neuropathy-targeted program or trial.
  • Participated in a non-pharmacologic therapy specifically for the treatment of chemotherapy-induced peripheral neuropathy, including Scrambler Therapy, mindfulness meditation, or other mind-body activities within 14 days (2 weeks) prior to randomization.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Not applicable
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
28 participants (actual)

Study arms

  • Experimental
    Arm A: Voxx socks followed by placebo socks

    Continuous wear of Voxx Human Performance Technology Socks for 2 weeks, followed by continuous wear of placebo socks for 2 weeks (separated by a 2-week washout period)

    Device: Voxx Human Performance Technology Socks · Device: Placebo Socks

  • Experimental
    Arm B: Placebo socks followed by Voxx socks

    Continuous wear of placebo socks for 2 weeks, followed by continuous wear of Voxx Human Performance Technology Socks for 2 weeks (separated by a 2-week washout period)

    Device: Voxx Human Performance Technology Socks · Device: Placebo Socks

Interventions

  • DeviceVoxx Human Performance Technology Socks

    Voxx Human Performance Technology Socks are commercially-available socks that are drug and electrical free. The Voxx Human Performance Technology proprietary pattern is woven into a sock that is made of 70% cotton, 25% polyester, 3% spandex, and 2% nylon. Prior to the 2-week treatment window, patients will be provided with 6 pairs of Voxx Human Performance Technology socks. Patients will be asked to wear the socks continuously during both waking and sleeping hours, except when showering, bathing, or swimming.

  • DevicePlacebo Socks

    Placebo socks are identical to the Voxx Human Performance Technology socks but do not include the Voxx Human Performance Technology pattern woven into the sock. Placebo socks are made of the same fabric as Voxx Human Performance Technology socks and are drug and electrical free. Prior to the 2-week treatment window, patients will be provided with 6 pairs of placebo socks. Patients will be asked to wear the socks continuously during both waking and sleeping hours, except when showering, bathing, or swimming.

06

What researchers measure

Primary outcomes

  1. Change in Subjective Measurement of Chemotherapy-induced Peripheral Neuropathy

    Impact on chemotherapy-induced peripheral neuropathy will be subjectively measured by changes in scores on the Functional Assessment of Cancer Therapy/Gynecologic Oncology Group - Neurotoxicity Subscale. The minimum value is 0 and maximum value is 44, and a lower score means a better outcome.

    Time frame: 6 weeks

Secondary outcomes

  1. Change in Objective Measurement of Chemotherapy-induced Peripheral Neuropathy (Score on the Modified Total Neuropathy Scale)

    Impact on chemotherapy-induced peripheral neuropathy will be objectively measured by changes in scores on the Total Neuropathy Scale clinical. The minimum value is 0 and maximum value is 28, and a lower score means a better outcome.

    Time frame: 6 weeks

  2. Change in Objective Measurement of Chemotherapy-induced Peripheral Neuropathy (Score on the Timed Up and Go Test)

    Impact on chemotherapy-induced peripheral neuropathy will be objectively measured by changes in scores on the Timed Up and Go test.

    Time frame: 6 weeks

  3. Change in Quality of Life Measurement

    Impact on quality of life will be measured by the changes in scores on the Patient-Reported Outcomes Measurement Information System 29 (PROMIS-29). PROMIS-29 is a collection of short form instruments which encompass PROMIS domains (depression, anxiety, physical function, pain interference, fatigue, sleep disturbance, and ability to participate in social and activities) in addition to a single item assessing pain intensity. The PROMIS 29 contains 4 items per domain plus one pain intensity item, totaling 29 items. Each domain is scored separately. For all domains (besides pain intensity) the raw score lies between 4 to 20. The PROMIS-29 uses a T-score metric to score its domains, with a mean of 50 and a standard deviation of 10, where higher scores indicate better health or less of the concept being measured.

    Time frame: 6 weeks

  4. Change in Cancer-related Symptom Experience

    Impact on cancer-related symptom experience will be measured by changes in scores on the Edmonton Symptom Assessment Scale. The minimum value is 0 and maximum value is 100, and a lower score means a better outcome.

    Time frame: 6 weeks

  5. Feasibility of Voxx Socks Use

    Feasibility will be measured by the number of hours the socks are worn, as recorded in the patient's daily sock diary.

    Time frame: 6 weeks

07

Results

Posted May 7, 2025

Participant flow

First 2 Week
Participant flow — First 2 Week
MilestoneArm A: Voxx Socks Followed by Placebo SocksArm B: Placebo Socks Followed by Voxx Socks
Started1414
Completed1414
Not completed00
Second 2 Week
Participant flow — Second 2 Week
MilestoneArm A: Voxx Socks Followed by Placebo SocksArm B: Placebo Socks Followed by Voxx Socks
Started1414
Completed1414
Not completed00

Outcome measures

PrimaryChange in Subjective Measurement of Chemotherapy-induced Peripheral Neuropathy

Impact on chemotherapy-induced peripheral neuropathy will be subjectively measured by changes in scores on the Functional Assessment of Cancer Therapy/Gynecologic Oncology Group - Neurotoxicity Subscale. The minimum value is 0 and maximum value is 44, and a lower score means a better outcome.

Time frame:
6 weeks
Reported as:
Mean · score on a scale
Change in Subjective Measurement of Chemotherapy-induced Peripheral Neuropathy
score on a scaleVoxx Human Performance Technology SocksPlacebo Socks
Change in Subjective Measurement of Chemotherapy-induced Peripheral Neuropathy27.32 ± 8.0327.94 ± 8.72
SecondaryChange in Objective Measurement of Chemotherapy-induced Peripheral Neuropathy (Score on the Modified Total Neuropathy Scale)

Impact on chemotherapy-induced peripheral neuropathy will be objectively measured by changes in scores on the Total Neuropathy Scale clinical. The minimum value is 0 and maximum value is 28, and a lower score means a better outcome.

Time frame:
6 weeks
Reported as:
Mean · score on a scale
Change in Objective Measurement of Chemotherapy-induced Peripheral Neuropathy (Score on the Modified Total Neuropathy Scale)
score on a scaleVoxx Human Performance Technology SocksPlacebo Socks
Change in Objective Measurement of Chemotherapy-induced Peripheral Neuropathy (Score on the Modified Total Neuropathy Scale)8.22 ± 2.368.88 ± 3.13
SecondaryChange in Objective Measurement of Chemotherapy-induced Peripheral Neuropathy (Score on the Timed Up and Go Test)

Impact on chemotherapy-induced peripheral neuropathy will be objectively measured by changes in scores on the Timed Up and Go test.

Time frame:
6 weeks
Reported as:
Mean · seconds
Change in Objective Measurement of Chemotherapy-induced Peripheral Neuropathy (Score on the Timed Up and Go Test)
secondsVoxx Human Performance Technology SocksPlacebo Socks
Change in Objective Measurement of Chemotherapy-induced Peripheral Neuropathy (Score on the Timed Up and Go Test)10.19 ± 2.9610.55 ± 3.02
SecondaryChange in Quality of Life Measurement

Impact on quality of life will be measured by the changes in scores on the Patient-Reported Outcomes Measurement Information System 29 (PROMIS-29). PROMIS-29 is a collection of short form instruments which encompass PROMIS domains (depression, anxiety, physical function, pain interference, fatigue, sleep disturbance, and ability to participate in social and activities) in addition to a single item assessing pain intensity. The PROMIS 29 contains 4 items per domain plus one pain intensity item, totaling 29 items. Each domain is scored separately. For all domains (besides pain intensity) the raw score lies between 4 to 20. The PROMIS-29 uses a T-score metric to score its domains, with a mean of 50 and a standard deviation of 10, where higher scores indicate better health or less of the concept being measured.

Time frame:
6 weeks
Reported as:
Mean · score on a scale
Change in Quality of Life Measurement
score on a scaleVoxx Human Performance Technology SocksPlacebo Socks
Physical Function43.19 ± 8.2942.66 ± 8.94
Anxiety52.86 ± 9.3652.76 ± 9.13
Depression50.04 ± 9.2949.63 ± 8.93
Fatigue52.18 ± 9.6553.94 ± 11.12
Sleep Disturbance57.03 ± 2.5756.76 ± 2.67
Pain Interference57.75 ± 8.9758.2 ± 8.69
Ability to participate in social and activities49.86 ± 8.7849.11 ± 10.41
SecondaryChange in Cancer-related Symptom Experience

Impact on cancer-related symptom experience will be measured by changes in scores on the Edmonton Symptom Assessment Scale. The minimum value is 0 and maximum value is 100, and a lower score means a better outcome.

Time frame:
6 weeks
Reported as:
Mean · score on a scale
Change in Cancer-related Symptom Experience
score on a scaleVoxx Human Performance Technology SocksPlacebo Socks
Change in Cancer-related Symptom Experience26.39 ± 17.8927.61 ± 18.1
SecondaryFeasibility of Voxx Socks Use

Feasibility will be measured by the number of hours the socks are worn, as recorded in the patient's daily sock diary.

Time frame:
6 weeks
Reported as:
Mean · hours/day
Feasibility of Voxx Socks Use
hours/dayVoxx Human Performance Technology SocksPlacebo Socks
Feasibility of Voxx Socks Use17.31615 ± 6.46314916.65153 ± 6.011369

Adverse events

Collected over from the start of treatment until 30 days following the end of treatment or until initiation of a new anticancer therapy (whichever occurs first). Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Voxx Human Performance Technology Socks0/28 (0%)0/28 (0%)3/28 (10.7%)
Placebo Socks0/28 (0%)0/28 (0%)1/28 (3.6%)
Most frequent other events
Most frequent other events
EventVoxx Human Performance Technology SocksPlacebo Socks
Pain in extremityMusculoskeletal and connective tissue disorders2/281/28
Other - Skin IritationSkin and subcutaneous tissue disorders1/280/28

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Arm A: Voxx Socks Followed by Placebo SocksArm B: Placebo Socks Followed by Voxx SocksTotal
<=18 years000
Between 18 and 65 years6814
>=65 years8614
Age, Continuous
Age, Continuous(years)Arm A: Voxx Socks Followed by Placebo SocksArm B: Placebo Socks Followed by Voxx SocksTotal
Mean58.28571 ± 16.4430459.85714 ± 10.9112359.071429 ± 13.716518
Sex: Female, Male
Sex: Female, Male(Participants)Arm A: Voxx Socks Followed by Placebo SocksArm B: Placebo Socks Followed by Voxx SocksTotal
Female101323
Male415
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Arm A: Voxx Socks Followed by Placebo SocksArm B: Placebo Socks Followed by Voxx SocksTotal
Hispanic or Latino044
Not Hispanic or Latino141024
Unknown or Not Reported000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Arm A: Voxx Socks Followed by Placebo SocksArm B: Placebo Socks Followed by Voxx SocksTotal
American Indian or Alaska Native000
Asian314
Native Hawaiian or Other Pacific Islander000
Black or African American437
White6814
More than one race123
Unknown or Not Reported000
Region of Enrollment
Region of Enrollment(participants)Arm A: Voxx Socks Followed by Placebo SocksArm B: Placebo Socks Followed by Voxx SocksTotal
United States141428
08

Study locations

2 sites
  • Cedars Sinai Medical Center
    Los Angeles, California 90048, United States
  • CS Cancer at the Hunt Cancer Center
    Torrance, California 90505, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 29, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04403802
Lead sponsor
Arash Asher, MD
Collaborators
VoxxLife
Responsible party
Arash Asher, MD (Director, Cancer Rehabilitation & Survivorship, Cedars-Sinai Medical Center) — Sponsor-investigator
First posted
May 27, 2020
Start date
Oct 16, 2020
Primary completion
May 22, 2024
Completion
May 23, 2024
Results posted
May 7, 2025
Last update
Aug 29, 2025

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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