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CompletedNCT02209324Updated Sep 27, 2024Results posted

Open-label Study of ASP2151 in Herpes Simplex Patients

A Phase 3 interventional study of ASP2151 in Herpes Simplex, sponsored by Maruho Co., Ltd.. Completed at 3 sites in Japan. Open to participants aged 16 Years to 79 Years. Per ClinicalTrials.gov, last updated 2024-09-27.

Sponsored by Maruho Co., Ltd. · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
275
Allocation
Not applicable
Ages
16 Years to 79 Years
Sex
All
01

Study summary

A multicenter, open-label study is conducted to evaluate the efficacy and safety of ASP2151 in patients with herpes simplex (recurrent labial/facial herpes and recurrent genital herpes and Kaposi varicelliform).

02

Conditions studied

  • Herpes Simplex

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03

In context

Herpes Simplex

305 studies on the registry are indexed under Herpes Simplex; 31 are open to participants now.

This study's enrollment of 275 is above the median of 101 across 227 interventional studies indexed under Herpes Simplex.

Browse Herpes Simplex studies →

Lead sponsor

Maruho Co., Ltd. is the lead sponsor of 24 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
16 Years to 79 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Patients with a rash associated with herpes simplex and a recurrent episode meeting the following criteria

    • Recurrent labial/facial herpes: Patients with at least 10 papulae or vesicles/pustules
    • Recurrent genital herpes: Patients with at least 5 papules or vesicles/pustules on the genital organs or in the genital and circumanal region
    • Kaposi varicelliform eruption: Patients with major skin symptoms of papulae or vesicles
  2. Patients who can start receiving the study drug within 48 hours after onset of rash
  3. Age: 16 years or older, but younger than 80 years

Exclusion criteria

Exclusion Criteria:

  1. Patients who are not expected to have an adequate response to oral antiviral medication.
  2. Patients with two or more types of herpes simplex.
  3. An extreme decline in immune function
  4. Presence of serious complications
  5. Patients found to meet any of the following conditions based on laboratory tests performed within 14 days before informed consent:

    • AST or ALT ≥ 2.5 x upper limit of normal
    • Platelet count \< lower limit of normal
    • Serum creatinine ≥ 1.5 mg/dL
    • Creatinine clearance \< 30 mL/min
  6. Current or previous history of malignant tumor within 5 years before informed consent
  7. Diagnosis of autoimmune disease
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
275 participants (actual)

Study arms

  • Experimental
    ASP2151

    Drug: ASP2151

Interventions

  • DrugASP2151

    Also known as: 200 mg once daily

06

What researchers measure

Primary outcomes

  1. Percentage of Participants With Healing by Day 8

    The percentage of participants achieving lesion healing by Day 8 of study treatment

    Time frame: 8 days

Secondary outcomes

  1. Time to Healing

    The criteria for determining healing are as follows: 1. A condition where all erythematous and papular lesions, vesicular and pustular lesions, and erosive and ulcerative lesions have been resolved, and either the complete resolution of crusts or the complete epithelialization beneath any remaining crusts has been achieved. 2. In participants where no crust has formed, a condition characterized by the epithelialization of erosions/ulcers formation in mucosal lesions and potentially other affected areas. 3. In participants where no vesicles or pustules have formed, a condition characterized by the complete resolution of all erythematous and papular lesions.

    Time frame: 29 days

  2. Time to Complete Crusting

    The criteria for complete crust formation are outlined as follows: 1. A condition where all erythematous and papular lesions, vesicular and pustular lesions, and erosive and ulcerative lesions have been resolved, and all rashes are crusted (epithelialization beneath is not required). 2. In participants where no crust has formed, a condition characterized by the epithelialization of erosions/ulcers formation in mucosal lesions and potentially other affected areas. 3. In participants where no vesicles or pustules have formed, a condition characterized by the complete resolution of all erythematous and papular lesions.

    Time frame: 29 days

  3. Time to Virus Disappearance

    The day of viral disappearance is the first day on which the results of viral isolation continuously show 'HSV negative' until the final implementation day. The negative means that the results of the isolation and culture are negative, or the isolation and culture has not been performed due to complete crusting or healing of the lesion site.

    Time frame: 29 days

07

Results

Posted Sep 27, 2024

Participant flow

Participant flow — Overall Study
MilestoneASP2151
Started275
Completed230
Not completed45
Withdrew: Adverse event2
Withdrew: Lack of efficacy1
Withdrew: Lost to follow-up1
Withdrew: Physician decision3
Withdrew: Protocol violation14
Withdrew: Withdrawal by subject8
Withdrew: Clinical laboratory value is ineligible on day 14
Withdrew: Platelet count < lln in laboratory test7
Withdrew: Qt interval >-450 ms on measurement of an ecg5

Outcome measures

PrimaryPercentage of Participants With Healing by Day 8

The percentage of participants achieving lesion healing by Day 8 of study treatment

Time frame:
8 days
Reported as:
Count of participants · Participants
Percentage of Participants With Healing by Day 8
ParticipantsASP2151
Percentage of Participants With Healing by Day 8194
SecondaryTime to Healing

The criteria for determining healing are as follows: 1. A condition where all erythematous and papular lesions, vesicular and pustular lesions, and erosive and ulcerative lesions have been resolved, and either the complete resolution of crusts or the complete epithelialization beneath any remaining crusts has been achieved. 2. In participants where no crust has formed, a condition characterized by the epithelialization of erosions/ulcers formation in mucosal lesions and potentially other affected areas. 3. In participants where no vesicles or pustules have formed, a condition characterized by the complete resolution of all erythematous and papular lesions.

Time frame:
29 days
Reported as:
Median · day
Time to Healing
dayASP2151
Time to Healing7 (5 to 8)
SecondaryTime to Complete Crusting

The criteria for complete crust formation are outlined as follows: 1. A condition where all erythematous and papular lesions, vesicular and pustular lesions, and erosive and ulcerative lesions have been resolved, and all rashes are crusted (epithelialization beneath is not required). 2. In participants where no crust has formed, a condition characterized by the epithelialization of erosions/ulcers formation in mucosal lesions and potentially other affected areas. 3. In participants where no vesicles or pustules have formed, a condition characterized by the complete resolution of all erythematous and papular lesions.

Time frame:
29 days
Reported as:
Median · day
Time to Complete Crusting
dayASP2151
Time to Complete Crusting6 (5 to 8)
SecondaryTime to Virus Disappearance

The day of viral disappearance is the first day on which the results of viral isolation continuously show 'HSV negative' until the final implementation day. The negative means that the results of the isolation and culture are negative, or the isolation and culture has not been performed due to complete crusting or healing of the lesion site.

Time frame:
29 days
Reported as:
Median · day
Time to Virus Disappearance
dayASP2151
Time to Virus Disappearance5 (3 to 6)

Adverse events

Collected over 29 days. Non-serious events are listed at a 2% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
ASP21510/271 (0%)2/271 (0.7%)53/271 (19.6%)
Most frequent serious events
Most frequent serious events
EventASP2151
Cellulitis of male external genitalorganInfections and infestations1/271
Cervical dysplasiaReproductive system and breast disorders1/271
Most frequent other events
Most frequent other events
EventASP2151
Fibrin degradation products increasedInvestigations21/271
Alpha 1 microglobulin increasedInvestigations13/271
NasopharyngitisInfections and infestations11/271
StomatitisGastrointestinal disorders6/271
FolliculitisInfections and infestations6/271

Baseline characteristics

Efficacy analysis set was defined as patients who were diagnosed with labial/facial herpes or recurrent genital herpes at the time of case registration, subsequently received the study drug at least once, and had any efficacy variable measured, except for those found not to have herpes simplex after study drug administration.

Age, Categorical
Age, Categorical(Participants)ASP2151
<=18 years4
Between 18 and 65 years247
>=65 years14
Age, Continuous
Age, Continuous(year)ASP2151
Mean39.2 ± 12.7
Sex: Female, Male
Sex: Female, Male(Participants)ASP2151
Female161
Male104
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)ASP2151
Hispanic or Latino0
Not Hispanic or Latino0
Unknown or Not Reported265
Race (NIH/OMB)
Race (NIH/OMB)(Participants)ASP2151
American Indian or Alaska Native0
Asian0
Native Hawaiian or Other Pacific Islander0
Black or African American0
White0
More than one race0
Unknown or Not Reported265
Region of Enrollment
Region of Enrollment(participants)ASP2151
Japan265
Disease type
Disease type(Participants)ASP2151
Recurrent labial / facial herpes191
Recurrent genital herpes39
Kaposi varicelliform eruption35
08

Study locations

3 sites
  • Sapporo Hokkaido Japan
    Sapporo, Japan
  • Oota-ku Tokyo Japan
    Tokyo, Japan
  • Yokohama Kanagawa Japan
    Yokohama, Japan
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 27, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02209324
Lead sponsor
Maruho Co., Ltd.
Responsible party
Sponsor
First posted
Aug 5, 2014
Start date
Nov 2013
Primary completion
Jul 2015
Completion
Aug 20, 2015
Results posted
Sep 27, 2024
Last update
Sep 27, 2024

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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