NCT04139330

Brief Summary

The purpose of this trial is to investigate the efficiency of pain relief and the safety of NPC-06 for the acute pain in herpes zoster in the placebo-controlled double-blind parallel group trial, in addition to explore the effective concentration of NPC-06.

Trial Health

57
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
16

participants targeted

Target at below P25 for phase_2

Timeline
Completed

Started Nov 2019

Shorter than P25 for phase_2

Geographic Reach
1 country

1 active site

Status
terminated

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

October 18, 2019

Completed
7 days until next milestone

First Posted

Study publicly available on registry

October 25, 2019

Completed
27 days until next milestone

Study Start

First participant enrolled

November 21, 2019

Completed
1.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 28, 2021

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

February 28, 2021

Completed
Last Updated

July 1, 2021

Status Verified

June 1, 2020

Enrollment Period

1.3 years

First QC Date

October 18, 2019

Last Update Submit

June 29, 2021

Conditions

Outcome Measures

Primary Outcomes (1)

  • The improvement of NRS (Numeric Rating Scale:Max10, Min0, higher scores mean a worse outcome) score

    The average change (slope) of NRS score at the time of evaluation, which is measured before the first administration, 30, 60, 90 and 120 minutes after the first administration.

    120 minutes after first administration

Secondary Outcomes (3)

  • The improvement of NRS (Numeric Rating Scale:Max10, Min0, higher scores mean a worse outcome) score

    120 minutes after first administration

  • The improvement of NRS (Numeric Rating Scale:Max10, Min0, higher scores mean a worse outcome) score

    120 minutes after first administration

  • The improvement of QOL(EQ-5D-5L, Max 1.000, Min -0.111, higher scores mean a better outcome) score

    7 days

Study Arms (3)

NPC-06 (high dose)

EXPERIMENTAL

Infuse diluted NPC-06 18mg/kg solution with 3 to 4 times volume of saline. Administarate NPC-06 gradually (slowly) over 18 minutes.

Drug: NPC-06

NPC-06 (low dose)

EXPERIMENTAL

Infuse diluted NPC-06 12mg/kg solution with 3 to 4 times volume of saline. Administarate NPC-06 gradually (slowly) over 12 minutes

Drug: NPC-06

NPC-06 (placebo)

PLACEBO COMPARATOR

Infuse NPC-06 (placebo) over 12 minutes or 18 minutes

Drug: NPC-06

Interventions

NPC-06DRUG

Infuse NPC-06 intravenously

NPC-06 (high dose)NPC-06 (low dose)NPC-06 (placebo)

Eligibility Criteria

Age20 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • years old or over at the time of informed consent.
  • Both genders.
  • Patients who have acute rash (either erythema or papule or bulla or pustule, or more), except who have crust more than 20% of entire rash at just before the time of the first administration.
  • Patients who are administrated antiviral drug for herpes zoster at the time of the first administration.
  • Patients who are administrated non-opioid analgesics(acetaminophen, NSAIDs) for herpes zoster at the time of the first administration.
  • Patients who the NRS score at the time of below evaluation point is higher than 4.
  • minutes before the start of infusion.
  • Just before the start of infusion.
  • Patients who the therapeutic effect of non-opioid analgesics for herpes zoster has been insufficient.
  • Patients who can admit to hospital for the all assessment duration from first administration until next day (including hospitalized patient).
  • Patients or his/her guardian who give a written informed consent in understanding and willingness after having received enough explanation regarding the study participation.

You may not qualify if:

  • Patients who cannot evaluate NRS by themselves.
  • Patients who are suspected to intracranial pressure increase.
  • Patients who have epilepsy, serious psychiatric or serious neurological disease (i. e. dementia, Parkinson disease and schizophrenic disorder) or consciousness disorder.
  • Patients who have malignant tumors (except for patients who have no signs of recurrence under treatment) or patients who are under treatment for HIV or patients who are receiving immunosuppressant.
  • Patients who have complicated idiopathic trigeminal neuralgia.
  • Patients who have other serious pain which may affect the evaluation of acute herpetic pain.
  • Patients who are receiving opioids or steroids(systemic).
  • Patients who have sinus bradycardia or serious disturbance of conduction system.
  • Patients who have history of hypersensitivity against hydantoin compound.
  • Patients who are receiving tadalafil (for pulmonary hypertension), rilpivirine, asunaprevir, daclatasvir, vaniprevir, macitentan or sofosbuvir.
  • Patients who are receiving medications for neuropathic pain, antidepressants, antiarrhythmic drugs, N-methyl-D-aspartate receptor antagonists, muscle relaxants, local anesthetics, an extract from inflammatory rabbit skin inoculated by vaccinia virus, Chinese herbal medications for analgesia, vitamin B12.
  • Patients who are receiving amenamevir.
  • Patients who have meningitis or meningeal irritation signs.
  • Patients who have complications such as serious heart disease, hepatic function disorder or renal function disorder which severity are considered by investigator as grade 3 or more severe with reference to ''Concerning classification criteria for seriousness of adverse drug reactions of medical agents'' .
  • Patients who are receiving fosphenytoin, phenytoin or ethotoin and combination drug including these or have taken these drugs as adjuvant therapy for pain .

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Kawasaki Hospital

Okayama, Okayama-ken, 700-8505, Japan

Location

Related Publications (1)

  • Iseki M, Yamamoto T, Ogawa Y, Majima Y, Abe Y, Watanabe D, Amaya F, Hasegawa T, Inafuku K, Kosugi T, Nomura Y, Deguchi T, Hamada T, Shimizu K, Arai S, Takahashi M, Hamada I, Ishikawa Y, Kawashima M. Efficacy and safety of intravenous fosphenytoin for patients with acute herpes zoster-associated pain: A placebo-controlled randomized trial. J Dermatol. 2024 Feb;51(2):234-242. doi: 10.1111/1346-8138.17054. Epub 2023 Dec 27.

Study Design

Study Type
interventional
Phase
phase 2
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

October 18, 2019

First Posted

October 25, 2019

Study Start

November 21, 2019

Primary Completion

February 28, 2021

Study Completion

February 28, 2021

Last Updated

July 1, 2021

Record last verified: 2020-06

Locations