CHAMGAP
APPROVEDReviewed and approved by the Chamgap Editorial Team (2026-08-15). The draft was written by AI, the existence of all 1 cited sources was verified at the original page, and the verdict passed blind grading and adversarial audit. Methodology v0.7.
Verdict No. 2627 · Search date 2026-08-15 · Methodology v0.7

Frozen gloves and socks,
does it really help with Prevention of paclitaxel-induced peripheral neuropathy?

30-Second Summary
C
Evidence Grade C · 54 · Safety caution
A small self-controlled trial found a large neuropathy-prevention effect, but there is no independent replication.
No participant stopped because of cold intolerance, but pain, discomfort, and cold injury should be monitored. People with Raynaud symptoms or peripheral arterial ischemia were excluded from the trial.
What the
research shows
The grade is C. Forty people entered a self-controlled trial and 36 completed 12 weekly cycles. Patient-reported neuropathy interfering with daily activities occurred in 1/36 cooled hands (2.8%) versus 15/36 untreated hands (41.7%), and 1/36 cooled feet versus 13/36 untreated feet (36.1%); the time-to-event hazard ratio was 0.13 for both hands and feet. The effect was large, but only 36 participants were analyzed and cooling was assigned nonrandomly to the dominant side, giving C with 54 points.
What the
ads claim
Feeling cold and lowering distal temperature are not themselves clinical neuroprotection. The supported claim is narrower: less neuropathy on the cooled limb during one specific weekly paclitaxel schedule.
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Useful facts when choosing a product

  • Elasto-Gel gloves and socks were cooled to -20°C for 90 minutes, with gloves replaced at 45 minutes.
  • Cooling was always applied to the dominant side, with the opposite side untreated.
  • The registration was UMIN000013398, not the later bilateral-cooling trial UMIN000034966.
Gap Measurement · Verdict 2627 · C 54
What advertising claims
What independent, higher-quality research supports
△ GAP
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What the research actually shows

Hanai and colleagues enrolled 40 people with breast cancer scheduled for twelve weekly paclitaxel doses of 80 mg/m². Gloves and socks cooled to -20°C were applied to the dominant side for 90 minutes, while the nondominant side was untreated. The prespecified primary endpoint was tactile deterioration by Semmes-Weinstein monofilament at 960 mg/m². Four did not complete chemotherapy, leaving 36 for the 12-cycle analysis; all 40 contributed to censored time-to-event analysis. Registration UMIN000013398 matched the trial. Funding came from the Japan Society for the Promotion of Science and a Japanese education-ministry program.

02

Why this is classified as C (54)

A large patient-centered effect and public funding are offset by a small 36-person analysis and nonrandom assignment of cooling to the dominant side, giving C with 54 points.

Counterpoint. C reflects limited replication and design confirmation, not a small observed effect.

Rejudgment record. Cross-check applied — The JNCI report was checked against UMIN registration for the primary endpoint, analyzed sample, side assignment, effect estimates, and public funding

Scoring profile behind this grade
EndpointPPatient-reported treatment goal - the symptom is the goal
ReplicationR1Single confirmatory trial
IndependenceI2Decisive evidence is publicly or non-profit funded
Effect sizeE+Meets the clinically important threshold

The scoring table and the verdict agree (C).

Sub-claim grades by effect

This ingredient is marketed for several effects. A single overall grade blends strong and weak claims together, so each effect is graded separately here. The overall grade reflects the strongest disconfirming or core claim.

Effect (sub-claim)GradeBasis
Prevention of neuropathy interfering with daily activitiesCLarge absolute differences and lower hazards were found for hands and feet.
Prevention of tactile deteriorationCThe prespecified primary endpoint also favored cooling.

Cross-check — Codex and Claude

This verdict was drafted by Codex through literature review and source-existence checks, cross-checked through blind grading and adversarial audit, and settled by reapplying the methodology boundary rules. Cases with split grades were resolved through rejudgment.
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Evidence Table

StudyDesignSampleFundingEndpointResultWeight
Hanai A, Ishiguro H, Sozu T, et al. 2018Prospective self-controlled clinical trial40Japan Society for the Promotion of Science DC1-6751 and education-ministry human-resource program grant 12Prespecified tactile-deterioration primary endpoint plus severe PNQ neuropathy, sensation, and dexterityPNQ D/E occurred in 1/36 versus 15/36 hands and 1/36 versus 13/36 feet; time-to-event HR 0.13 (0.05-0.34) for hands and 0.13 (0.04-0.38) for feet.Only peer-reviewed original study with a large signal
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Receipt — 1 References

All 1 cited sources were verified for existence at the original page (as of 2026-08-15).

Hanai A, Ishiguro H, Sozu T, et al. Effects of Cryotherapy on Objective and Subjective Symptoms of Paclitaxel-Induced Neuropathy: Prospective Self-Controlled Trial. J Natl Cancer Inst. 2018;110(2):141-148. PMID: 29924336. PMCID: PMC6007752. DOI: 10.1093/jnci/djx178.
checked
Draft and rewrite: Codex (AI) · Verification: Codex blind grading and adversarial audit · Final adjudication: Claude
Reviewed and approved: Chamgap Editorial Team · Approval date: 2026-08-15 · Corrections: none

Cite this verdict

Frozen gloves and socks x prevention of paclitaxel neuropathy Evidence Grade C card
[Chamgap] Frozen gloves and socks x prevention of paclitaxel neuropathy — Evidence Grade C·54. 1 cited sources checked. Source: https://chamgap.com/en/verdicts/antioxidant-aging/frozen-gloves-socks-paclitaxel-peripheral-neuropathy/ · CC BY 4.0

CC BY 4.0 — free to use with attribution; do not distort grades, numbers, or verdict meaning.

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