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Study · Randomized controlled trial · n = 30 · 2023

4 results

Assessment of the physical dependence potential of difelikefalin: Randomized placebo-controlled study in patients receiving hemodialysis.

Spencer RH, Munera C, Shram MJ, Menzaghi F

Clinical and translational science12 May 2023Cited by 8 (Europe PMC)

Summary

The text of this summary is not shown here, because the article license does not allow reuse. Read it at the source (opens in a new tab)

Text rights: CC BY-NC-ND. Results still quote short attributed sentences.

Results from this study4

4 results from studies that gave the peptide. 4 results from people.

  1. 01HumanRandomized controlled trialSafety outcome

    In hemodialysis patients, withdrawal scores were similar after stopping or continuing difelikefalin, with a placebo-minus-difelikefalin difference of 0.52 (95% CI -0.56, 1.59).

    In plain wordsIn hemodialysis patients, withdrawal scores were similar after stopping or continuing difelikefalin.

    Outcome
    No significant changeMaximum COWS withdrawal score
    Study

    n = 30

    Comparator
    Switch to placebo after difelikefalin
    Analysis
    Primary
    Outcome group
    Adverse events · Nervous system and cognition
    Studied dose
    Dose not stated · 3 weeks open-label treatment followed by 2 weeks randomized continuation or withdrawalAs given in this study (human).

    Measurements

    Least squares mean difference in maximum COWS total score (placebo - difelikefalin)
    0.52 COWS total score
    double-blind phase, placebo vs continued difelikefalin
    95% CI of least squares mean difference in maximum COWS total score
    −0.56 to 1.59 COWS total score
    double-blind phase, placebo vs continued difelikefalin

    Source sentences

    Summary
    The least squares mean difference in maximum COWS total scores was 0.52 (95% confidence interval [CI]: -0.56, 1.59).
    3 context sentences
    Summary · context
    The upper CI limit (1.59) was below +4, indicating that patients who discontinued difelikefalin (placebo group) had similar withdrawal scores to patients who continued difelikefalin.
    Summary · context
    Eligible patients received open-label difelikefalin after each dialysis session for 3 weeks before entering a 2-week double-blind phase, when they were randomized to either continue difelikefalin or to switch to receiving placebo.
    Summary · context
    Signs of physical withdrawal were assessed using the Clinical Opiate Withdrawal Scale (COWS), several patient-reported scales, and physiological measures.
  2. 02HumanRandomized controlled trialSafety outcome

    In hemodialysis patients, physiological measures showed no meaningful differences after stopping or continuing difelikefalin.

    In plain wordsIn hemodialysis patients, physiological measures were similar after stopping or continuing difelikefalin.

    Outcome
    Direction not reportedPhysiological withdrawal measures
    Study

    n = 30

    Comparator
    Switch to placebo after difelikefalin
    Outcome group
    Adverse events · Nervous system and cognition
    Studied dose
    Dose not stated · 3 weeks open-label treatment followed by 2 weeks randomized continuation or withdrawalAs given in this study (human).

    Source sentences

    Summary
    Additional assessments supported the COWS results, showing no meaningful differences between groups in physiological measures or in patient-reported measures of sleep or physical withdrawal.
    2 context sentences
    Summary · context
    Eligible patients received open-label difelikefalin after each dialysis session for 3 weeks before entering a 2-week double-blind phase, when they were randomized to either continue difelikefalin or to switch to receiving placebo.
    Summary · context
    Signs of physical withdrawal were assessed using the Clinical Opiate Withdrawal Scale (COWS), several patient-reported scales, and physiological measures.
  3. 03HumanRandomized controlled trialSafety outcome

    In hemodialysis patients, patient-reported sleep showed no meaningful differences after stopping or continuing difelikefalin.

    In plain wordsIn hemodialysis patients, sleep reports were similar after stopping or continuing difelikefalin.

    Outcome
    Direction not reportedPatient-reported sleep
    Study

    n = 30

    Comparator
    Switch to placebo after difelikefalin
    Outcome group
    Sleep · Sleep
    Studied dose
    Dose not stated · 3 weeks open-label treatment followed by 2 weeks randomized continuation or withdrawalAs given in this study (human).

    Source sentences

    Summary
    Additional assessments supported the COWS results, showing no meaningful differences between groups in physiological measures or in patient-reported measures of sleep or physical withdrawal.
    2 context sentences
    Summary · context
    Eligible patients received open-label difelikefalin after each dialysis session for 3 weeks before entering a 2-week double-blind phase, when they were randomized to either continue difelikefalin or to switch to receiving placebo.
    Summary · context
    Signs of physical withdrawal were assessed using the Clinical Opiate Withdrawal Scale (COWS), several patient-reported scales, and physiological measures.
  4. 04HumanRandomized controlled trialSafety outcome

    In hemodialysis patients, patient-reported physical withdrawal showed no meaningful differences after stopping or continuing difelikefalin.

    In plain wordsIn hemodialysis patients, physical withdrawal reports were similar after stopping or continuing difelikefalin.

    Outcome
    Direction not reportedPatient-reported physical withdrawal
    Study

    n = 30

    Comparator
    Switch to placebo after difelikefalin
    Outcome group
    Adverse events · Nervous system and cognition
    Studied dose
    Dose not stated · 3 weeks open-label treatment followed by 2 weeks randomized continuation or withdrawalAs given in this study (human).

    Source sentences

    Summary
    Additional assessments supported the COWS results, showing no meaningful differences between groups in physiological measures or in patient-reported measures of sleep or physical withdrawal.
    2 context sentences
    Summary · context
    Eligible patients received open-label difelikefalin after each dialysis session for 3 weeks before entering a 2-week double-blind phase, when they were randomized to either continue difelikefalin or to switch to receiving placebo.
    Summary · context
    Signs of physical withdrawal were assessed using the Clinical Opiate Withdrawal Scale (COWS), several patient-reported scales, and physiological measures.

AI wrote and checked these results. AI can make mistakes, so check important results against the source.

Version history

PepBank keeps every version of the data on this study. Status changes from Retraction Watch, Europe PMC and Crossref are listed with their source.

  1. Version 2Current

    28 Oct 2026, 02:03 UTC

    Study results updated

  2. Version 1

    27 Oct 2026, 16:35 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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