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Trial · NCT02318719

DS-5565 Phase III Study for Post-herpetic Neuralgia

NCT02318719, Not applicable, Completed, Daiichi Sankyo Co., Ltd.; results first posted 2020-11-02

3 sourcestrials-2026-11-12-0.5.0

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ConductScience Library. DS-5565 Phase III Study for Post-herpetic Neuralgia. Trials, record NCT02318719. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT02318719

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Trial

As registered on ClinicalTrials.gov, in the graph's capture of the registry.

Title
DS-5565 Phase III Study for Post-herpetic Neuralgia
NCT number
NCT02318719
Status
Completed
Phases
Not applicable
Enrollment
765 participants, actual
Lead sponsor
Daiichi Sankyo Co., Ltd.
Conditions
Post-Herpetic Neuralgia
Interventions
Placebo, DS-5565
First posted
2014-12-17
Last updated
2020-11-02
Results first posted
2020-11-02

Source ClinicalTrials.gov

Registered outcomes2

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryChange in the Average Daily Pain Score (ADPS) From Baseline to Week 14 Following Oral Administration of DS-5565 in Asian Participants With Post-herpetic NeuralgiaBaseline to Week 14
Each participant recorded a pain score in the electronic patient diary once daily from the day after the screening visit (Visit 1) to the end of treatment/early termination visit (Visit 10). Prior to taking the study drug each morning, the participant selected the number that best described his or her pain over the past 24 hours on a scale of 0 (no pain) to 10 (worst possible pain). Higher ADPS scores indicated worse outcome. ADPS was the weekly average pain score based on the pain scores from the electronic patient diaries (Pain diary). In this outcome, the change from baseline in ADPS is being reported with negative values representing improvements in average daily pain. The larger the negative value (ie. improvement), the greater the improvement in average daily pain.
SecondaryChange in Visual Analog Scale (VAS) Pain From Baseline (Week 14) to Week 66 Following Administration of DS-5565 in Asian Participants With Post-herpetic NeuralgiaFrom baseline (Week 14) to Week 66
Visual Analog Scale (VAS) pain is a 10-point assessment tool to measure pain levels, where 0 is defined as 'no pain' and 10 is defined as 'worst possible pain'. Higher VAS pain scores indicate worse outcome. In this outcome, the change from baseline in VAS pain is being reported with negative values representing improvements in pain intensity. The larger the negative value (ie. improvement), the greater the improvement in pain intensity.

Outcomes2

Each outcome the trial posted results for, in ClinicalTrials.gov's words.

TypeOutcomeTime framePopulationUnitsMeasured as
PRIMARYChange in the Average Daily Pain Score (ADPS) From Baseline to Week 14 Following Oral Administration of DS-5565 in Asian Participants With Post-herpetic NeuralgiaBaseline to Week 14Average daily pain score (ADPS) was assessed in the modified Intent-to-Treat Analysis Set.units on a scaleMEAN
SECONDARYChange in Visual Analog Scale (VAS) Pain From Baseline (Week 14) to Week 66 Following Administration of DS-5565 in Asian Participants With Post-herpetic NeuralgiaFrom baseline (Week 14) to Week 66Visual analog scale (VAS) was assessed in the modified Intent-to-Treat Analysis Set.units on a scaleMEAN

Results by group70

Each measurement the trial posted, group by group, in the words and numbers it posted.

OutcomeGroupCategoryValueSpreadUnits
Change in the Average Daily Pain Score (ADPS) From Baseline to Week 14 Following Oral Administration of DS-5565 in Asian Participants With Post-herpetic NeuralgiaPlaceboWeek 1-0.10Standard Deviation 0.743units on a scale
Change in the Average Daily Pain Score (ADPS) From Baseline to Week 14 Following Oral Administration of DS-5565 in Asian Participants With Post-herpetic NeuralgiaDS-5565 15 mg/DayWeek 1-0.39Standard Deviation 0.787units on a scale
Change in the Average Daily Pain Score (ADPS) From Baseline to Week 14 Following Oral Administration of DS-5565 in Asian Participants With Post-herpetic NeuralgiaDS-5565 20 mg/DayWeek 1-0.54Standard Deviation 0.783units on a scale
Change in the Average Daily Pain Score (ADPS) From Baseline to Week 14 Following Oral Administration of DS-5565 in Asian Participants With Post-herpetic NeuralgiaDS-5565 30 mg/DayWeek 1-0.46Standard Deviation 0.693units on a scale
Change in the Average Daily Pain Score (ADPS) From Baseline to Week 14 Following Oral Administration of DS-5565 in Asian Participants With Post-herpetic NeuralgiaPlaceboWeek 2-0.33Standard Deviation 0.902units on a scale
Change in the Average Daily Pain Score (ADPS) From Baseline to Week 14 Following Oral Administration of DS-5565 in Asian Participants With Post-herpetic NeuralgiaDS-5565 15 mg/DayWeek 2-0.72Standard Deviation 1.036units on a scale
Change in the Average Daily Pain Score (ADPS) From Baseline to Week 14 Following Oral Administration of DS-5565 in Asian Participants With Post-herpetic NeuralgiaDS-5565 20 mg/DayWeek 2-1.06Standard Deviation 0.998units on a scale
Change in the Average Daily Pain Score (ADPS) From Baseline to Week 14 Following Oral Administration of DS-5565 in Asian Participants With Post-herpetic NeuralgiaDS-5565 30 mg/DayWeek 2-0.95Standard Deviation 1.003units on a scale
Change in the Average Daily Pain Score (ADPS) From Baseline to Week 14 Following Oral Administration of DS-5565 in Asian Participants With Post-herpetic NeuralgiaPlaceboWeek 3-0.48Standard Deviation 1.030units on a scale
Change in the Average Daily Pain Score (ADPS) From Baseline to Week 14 Following Oral Administration of DS-5565 in Asian Participants With Post-herpetic NeuralgiaDS-5565 15 mg/DayWeek 3-0.96Standard Deviation 1.195units on a scale

Participant flow35

How many started, completed or left each group, period by period.

PeriodMilestoneGroupParticipantsUnits counted
Double-blind PhaseSTARTEDPlacebo304
Double-blind PhaseSTARTEDDS-5565 15 mg/Day153
Double-blind PhaseSTARTEDDS-5565 20 mg/Day153
Double-blind PhaseSTARTEDDS-5565 30 mg/Day155
Double-blind PhaseSTARTEDDS-5565 Open-label Extension0
Double-blind PhaseDid Not Receive TreatmentPlacebo1
Double-blind PhaseDid Not Receive TreatmentDS-5565 15 mg/Day1
Double-blind PhaseDid Not Receive TreatmentDS-5565 20 mg/Day0
Double-blind PhaseDid Not Receive TreatmentDS-5565 30 mg/Day0
Double-blind PhaseDid Not Receive TreatmentDS-5565 Open-label Extension0

Adverse events125

Each adverse event the trial posted, group by group: the participants affected out of those at risk.

TypeEventOrgan systemGroupAffectedAt riskEvents
otherNasopharyngitisInfections and infestationsPlacebo26303
otherNasopharyngitisInfections and infestationsDS-5565 15 mg/Day13152
otherNasopharyngitisInfections and infestationsDS-5565 20 mg/Day16153
otherNasopharyngitisInfections and infestationsDS-5565 30 mg/Day20155
otherNasopharyngitisInfections and infestationsDS-5565 Open-label Extension39237
otherSomnolenceNervous system disordersPlacebo11303
otherSomnolenceNervous system disordersDS-5565 15 mg/Day20152
otherSomnolenceNervous system disordersDS-5565 20 mg/Day26153
otherSomnolenceNervous system disordersDS-5565 30 mg/Day37155
otherSomnolenceNervous system disordersDS-5565 Open-label Extension36237

Adverse event totals15

The totals the trial posted for each group.

TotalGroupAffectedAt risk
Total, all-cause mortalityPlacebo0303
Total, all-cause mortalityDS-5565 15 mg/Day0152
Total, all-cause mortalityDS-5565 20 mg/Day0153
Total, all-cause mortalityDS-5565 30 mg/Day0155
Total, all-cause mortalityDS-5565 Open-label Extension1237
Total, other adverse eventsPlacebo45303
Total, other adverse eventsDS-5565 15 mg/Day44152
Total, other adverse eventsDS-5565 20 mg/Day53153
Total, other adverse eventsDS-5565 30 mg/Day72155
Total, other adverse eventsDS-5565 Open-label Extension99237

Papers2

The papers the trial lists on ClinicalTrials.gov.

PMIDListed asSource
32899037DERIVEDPubMed
34059327DERIVEDPubMed

Grants0

The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.

None in this release.

Trial comparisons0

Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.

None in this release.

Tests0

The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.

None in this release.

Data dates

The day each source was copied for this release.

ClinicalTrials.gov
2026-11-12
ClinicalTrials.gov
Results, from AACT
2026-03-23
AACT
NIH grant links
2026-11-13
NIH RePORTER

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

For software

Read this trial from software.

The record and each of its lists are JSON, twenty rows a page. No key.

GET https://conductscience.org/api/trials/v1/NCT02318719

GET https://conductscience.org/api/trials/v1/NCT02318719/results?page=2