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  • Difelikefalin...

Difelikefalin effective in treatment of pruritus for patients receiving hemodialysis: JAMA

Written By : Dr. Shravani Dali |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2022-06-02T09:00:35+05:30  |  Updated On 2 Jun 2022 11:09 AM IST
Difelikefalin effective in treatment of pruritus for patients receiving hemodialysis: JAMA
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Difelikefalin is effective in treating pruritus for patients receiving hemodialysis, according to a recent study published in the JAMA Network Open.

Patients with pruritus receiving hemodialysis frequently experience oppressive physical and psychiatric symptoms that directly affect their quality of life and increase mortality. However, treatment options are limited.

A study was conducted to determine the clinically recommended dose of difelikefalin, a κ-opioid receptor agonist, based on the efficacy, dose-response, safety, and pharmacokinetics.

This randomized, double-blind, placebo-controlled, 4-arm phase 2 trial was conducted from February 1, 2019, to October 22, 2019, at 94 sites in Japan. Patients with moderate to severe pruritus receiving hemodialysis were enrolled. Difelikefalin (0.25, 0.5, and 1.0 μg/kg) and placebo were intravenously administered 3 times a week at the end of each hemodialysis session for 8 weeks. The primary endpoint was the change from baseline in the weekly mean Worst Itching Intensity Numerical Rating Scale (NRS) score at week 8. Secondary outcomes measured changes in the itch-related quality-of-life score using the Skindex-16 and 5-D itch scale. Safety was assessed according to adverse events, laboratory tests, vital signs, body weight, and a 12-lead electrocardiogram.

Results:

  • A total of 247 Japanese patients were randomized to placebo (n = 63), 0.25 μg/kg of difelikefalin (n = 61), 0.5 μg/kg of difelikefalin (n = 61), or 1.0 μg/kg of difelikefalin (n = 62).
  • The changes from baseline in the adjusted mean (SE) of the 24-hour Worst Itching Intensity NRS score at week 8 were −2.86 (0.29) in the placebo group, −2.97 (0.29) in the 0.25 μg/kg of difelikefalin group, −3.65 (0.30) in the 0.5 μg/kg of difelikefalin group, and −3.64 (0.30) in the 1.0 μg/kg of difelikefalin group.
  • Significant differences were found in the 0.5 μg/kg of difelikefalin group (adjusted mean difference, −0.80; 95% CI, −1.55 to −0.04; P = .04) and the 1.0 μg/kg of difelikefalin group compared with placebo.
  • The Skindex-16 overall score and 5-D itch scale total score indicated an improvement with treatment with 0.5 and 1.0 μg/kg of difelikefalin
  • The incidence of adverse events was 67% (42 of 63 patients) in the placebo group, 72% (44 of 61 patients) in the 0.25 μg/kg of difelikefalin group, 77% (47 of 61 patients) in the 0.5 μg/kg of difelikefalin group, and 85% (53 of 62 patients) in the 1.0 μg/kg of difelikefalin group.
  • No dependency was reported.

The findings of this phase 2 randomized clinical trial of difelikefalin suggest that 0.5 μg/kg of difelikefalin should be the clinically recommended dose as a new option for treating moderate to severe pruritus in patients undergoing hemodialysis because of its efficacy, acceptable tolerability, and manageable safety profile.

Reference:

Efficacy and Safety of Difelikefalin in Japanese Patients With Moderate to Severe Pruritus Receiving Hemodialysis: A Randomized Clinical Trial by Ichiei Narita, et al. published in the JAMA Netw Open.

doi:10.1001/jamanetworkopen.2022.10339



JAMA Netw Open.HemodialysisDifelikefalin
Source : JAMA Netw Open.
Dr. Shravani Dali
Dr. Shravani Dali

    Dr. Shravani Dali has completed her BDS from Pravara institute of medical sciences, loni. Following which she extensively worked in the healthcare sector for 2+ years. She has been actively involved in writing blogs in field of health and wellness. Currently she is pursuing her Masters of public health-health administration from Tata institute of social sciences. She can be contacted at editorial@medicaldialogues.in.

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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