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. 2022 Nov;88(11):4742-4750.
doi: 10.1111/bcp.15384. Epub 2022 May 29.

Higher incidence of neurotoxicity and skin hyperpigmentation in renal transplant patients treated with polymyxin B

Yangang Zhou  1   2 , Ying Li  1   2 , Xubiao Xie  3 , Lei Song  3 , Gongbin Lan  3 , Bao Sun  1   2 , Tiantian Tang  1   2 , Han Yan  1   2 , Bikui Zhang  1   2 , Ping Xu  1   2
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Free article

Higher incidence of neurotoxicity and skin hyperpigmentation in renal transplant patients treated with polymyxin B

Yangang Zhou et al. Br J Clin Pharmacol. 2022 Nov.
Free article

Abstract

Background: Toxicity is a major concern related to the clinical use of polymyxin B, and available safety data for renal transplant patients are limited.

Aims: We investigated the safety of polymyxin B and toxicity risk factors in renal transplant patients.

Methods: A prospective study was performed on a group of renal transplant patients who received intravenous polymyxin B between January 2018 and August 2021. Polymyxin B treatment was monitored to evaluate toxicity and risk factors.

Results: A total of 235 courses of polymyxin B were administered to 213 patients. Of these, 121 (51.5%) developed skin hyperpigmentation (SH), 149 (63.4%) developed neurotoxicity and 10 (5.5%) developed acute kidney injury of which 80% was reversible. Risk factors for developing SH included a high total dose by weight (odds ration [OR] 1.31, 95% confidence interval [CI] 1.08-1.60, P = .008) and the presence of neurotoxicity (OR 2.86, 95% CI 1.56-5.26, P = .001). Neurotoxicity manifested during the first 2 days of treatment. Neurotoxicity occurred most commonly in women (OR 3.84, 95% CI 1.82-8.10, P < .0001), and the presence of SH (OR 1.98, 95% CI 1.13-3.46, P = .016) was also an independent risk factor.

Conclusions: Neurotoxicity and SH are the two major adverse effects of polymyxin B in renal transplant patients, which may limit its clinical use.

Keywords: neurotoxicity; polymyxin B; renal transplant patients; safety; skin hyperpigmentation.

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