A meta-analysis of the utility of cryotherapy for preventing peripheral neuropathy among breast cancer patients receiving paclitaxel and nab-paclitaxel

Background: Cryotherapy with taxane infusion is a noninvasive strategy for preventing peripheral neuropathy (PN), but the efficacy of this approach has not been proven.

Methods: A systematic search was conducted, and 477 records were initially identified. The titles were screened independently by 2 reviewers. Fourteen studies were ultimately included for meta-analysis, which was conducted using the meta package in the R software. Only studies that analysed cryotherapy use in breast cancer patients who received paclitaxel or nab-paclitaxel were included. Relative risks (RRs) were calculated using the random effects model to compare the occurrence of PN between the paclitaxel and nab-paclitaxel groups.

Results: The incidence of Common Terminology Criteria for Adverse Events (CTCAE) grade ≥ 2 PN was 24.85% (81/326) in the cryotherapy arm and 42.35% (72/170) in the placebo arm. The overall RR CTCAE grade ≥ 2 PN in the cryotherapy group compared with the placebo group was 0.45 [0.27, 0.77, p = 0.0031]. The RR for sensory PN was 0.19 [0.05, 0.66, p = 0.009], and that for motor PN was 0.18 [0.03, 0.99, p = 0.0491]. The RR for Patient Neurotoxicity Questionnaire (PNQ) scores ≥ D, which indicate severe neuropathy, was 0.24 [0.09, 0.62; p = 0.0035]. Cold intolerance was the most reported t adverse effect, with a prevalence of 15% (37/247).

Conclusions: The use of cryotherapy decreased the occurrence of CTCAE grade ≥ 2 PN by 55%. Cold intolerance was the most frequently reported adverse effect associated with cryotherapy, but this adverse effect did not lead to high discontinuation rates.