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Difelikefalin

Phase 3

Uremic Pruritus | Small molecule | Dermatology |Fresenius Medical Care AG|Last Updated: Sep 12, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDBiomarker
Total Trials1
Total Enrollment260
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05885737Phase 3 Study of Difelikefalin in Haemodialysis Chinese Adult Subjects With Moderate-to-Severe PruritusPHASE3 COMPLETED 260May 18, 2023Sep 25, 2024Sep 12, 202535 China
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Study Endpoints
Primary Endpoints
Change From Baseline in the Weekly Mean of the Daily 24-hour WI-NRS Score at Week 4 of the DB Period
From Baseline to Week 4

On a daily basis, participants recorded the intensity of the worst itching they experienced over the past 24 hours using a numerical rating scale (NRS) scale from 0 to 10, where 0 represents "no itching" and 10 was "worst itching imaginable". A higher score indicated a more severe outcome. The weekly mean of the daily values of the daily 24-hour WI-NRS was calculated for the analysis. The least square (LS) means of change from baseline to Week 4 in the weekly mean of the daily 24-hour WI-NRS score was estimated using the mixed model repeated measures (MMRM) method. The MMRM model included use of prior anti-itch medication (yes/no), presence of specific medical conditions at baseline (yes/no), treatment, visit, and treatment-by-visit-interaction as fixed categorical effects and baseline WI-NRS score as fixed continuous effects.

Secondary Endpoints
Percentage of Participants Achieving Greater Than or Equal to (>=) 3-point Improvement From Baseline With Respect to the Weekly Mean of the Daily 24-hour WI-NRS in the DB Period
From Baseline, and at Weeks 4, 8, and 12
Percentage of Participants Achieving at Least 4-point Improvement From Baseline With Respect to the Weekly Mean of the Daily 24-hour WI-NRS in the DB Period
From Baseline, and at Weeks 4, 8, and 12
Change From Baseline in the Weekly Mean of the 24-hour WI-NRS Score at Each Week of the DB Period
From Baseline to Weeks 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
12-weeks double-blind period - DifelikefalinEXPERIMENTAL -
12-weeks double-blind period - PlaceboPLACEBO_COMPARATOR -
14-weeks optional open-label period following the double-blind period - DifelikefalinEXPERIMENTAL -
Interventions
NameTypeDescription
Difelikefalin InjectionDRUGParticipants receive Difelikefalin three times a week (0.5 micrograms/kg dry body weight). Difelikefalin is administered by intravenous bolus injection into the venous line of the dialysis circuit at the end of each dialysis.
Placebo InjectionDRUGParticipants receive Placebo three times a week (0.5 micrograms/kg dry body weight). Placebo is administered by intravenous bolus injection into the venous line of the dialysis circuit at the end of each dialysis.
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Eligibility Criteria
Age Range18 Years — 85 Years
SexALL
Healthy VolunteersNo
Study Sites35

Inclusion Criteria: * Subjects with chronic kidney disease (CKD) on HD 3 times weekly for ≥12 weeks prior to the informed consent procedure (including the date of informed consent) who can continue HD without changing its frequency or method. * If female, is not pregnant, or nursing. * If female: ...

Countries:China
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