CClinicalTrials.gg
Status unknownNCT04714060Updated May 18, 2022

UB-621, a New Type of Anti-herpes Simplex Virus (HSV) Monoclonal Antibody for the Use in the Treatment of Adult Recurrent HSV-2 Infections of the Genitals

A Phase 2 interventional study of UB-621 in Recurrent Genital Herpes, sponsored by UBP Greater China (Shanghai) Co., Ltd. Status unknown. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-05-18.

Sponsored by UBP Greater China (Shanghai) Co., Ltd · Phase 2, Interventional, and Treatment

The sponsor has not verified this record recently (last verified May 2022), so the status shown — last known as Not yet recruiting — may be out of date.
Phase
Phase 2
Study type
Interventional
Enrollment
44
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

A randomized, single-blind, dose-selected phase II trial to evaluate the safety, efficacy and PK of UB-621 in adults with recurrent genital HSV-2 infection

02

Conditions studied

  • Recurrent Genital Herpes
03

In context

Herpes Genitalis

70 studies on the registry are indexed under Herpes Genitalis; 3 are open to participants now.

This study's planned enrollment of 44 is below the median of 103 across 53 interventional studies indexed under Herpes Genitalis.

Browse Herpes Genitalis studies →

Lead sponsor

UBP Greater China (Shanghai) Co., Ltd is the lead sponsor of 5 studies on the registry; 4 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Subject must be at least 18 years of age inclusive.
  • Subject must be HSV-2 seropositive
  • Subjects have a history of recurrent genital herpes in the past year
  • Subjects have a negative result on the HIV Ab/Ag assay
  • Subjects must agree to use contraception during study participation
  • Subjects must be willing to collect a swab each day from their genital area (non-lesional as well as lesional, if appropriate) during the swabbing periods, which are 8 weeks period after the administration of study drug.
  • Subject must be willing to go back to the hospital within 72 hours after the new lesions are shown in the anal and genital area.
  • Subject must be willing to observe the syndromes around the anal and genital area during study period, to evaluate the lesions according to the HSV lesion score, and to record in the patient dairy
  • Female subjects must have a negative serum β-HCG at Screening and a negative urine pregnancy test prior to study drug administration.

Exclusion criteria

Exclusion Criteria:

  • Serious medical conditions, including poorly controlled diabetes, significant autoimmune diseases, co-existing sexually transmitted disease presentation (except HSV) in the anogenital area, etc. that may interfere with the assessment of the efficacy of UB-621.
  • History or current evidence of malignancy except for a localized non-melanoma skin cancer
  • Known immunosuppression
  • Exposure to HSV vaccine
  • Medical history of macular or maculopapular skin reactions to antibody (ie, as evidenced by IgG or plasma administration)
  • Any other conditions that in the judgment of the Investigator would preclude successful completion of the clinical study
  • Treatment with systemic steroids or other immunomodulating agents within 30 days prior to Screening or planned treatment with systemic steroids or immunomodulators during the study period.
  • Renal impairment and/or hepatic impairment
  • ECG abnormalities of clinical relevance or cardiovascular conditions
  • Abnormal blood tests according to "Toxicity Grading Scale for Healthy Adult and Adolescent Volunteers Enrolled in Preventive Vaccine Clinical Trial "in the Guidance for Industry, 2007:

    1. albumin\<3 g/dl
    2. ALP>2.5*ULN
    3. ALT>2.5*ULN
    4. AST>2.5*ULN
    5. Bilirubin>1.5*ULN
    6. CPK>1.5*ULN
    7. rGGT>2.5*ULN
    8. Hemoglobin: female\<11 g/dl; male\<12.5 g/dl
    9. platelet\<125*10E3/ul
    10. WBC\<2.5*10E3/ul or
    11. ANC\<1.5*10E3/ul
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Single (Participant)
Enrollment
44 participants (estimated)

Study arms

  • Experimental
    cohort 1

    2.5 mg/kg UB-621 group

    Biological: UB-621

  • Experimental
    cohort 2

    5 mg/kg UB-621 group

    Biological: UB-621

Interventions

  • BiologicalUB-621

    mAb by SC administration

06

What researchers measure

Primary outcomes

  1. Proportion of subjects with episodes before and after UB-621 treatment (self-comparison)

    Proportion of subjects with episodes is calculated as the number of subjects with episodes divided by the number of total subjects. Primary endpoint is the self-comparison of proportion of subjects with episodes before and after UB-621 treatment.

    Time frame: 16 weeks

Secondary outcomes

  1. Lesion rate

    Lesion rate is calculated as the number of days with lesion divided by the number of study days.

    Time frame: 16 weeks

  2. Duration of recurrent lesions

    Duration of recurrent lesions is calculated as consecutive days with lesions of HSV score 2-7.

    Time frame: 16 weeks

  3. Recurrence rate

    Recurrence rate is defined as number of recurrences divided by the total number of study days.

    Time frame: 16 weeks

  4. Time to first recurrence of lesion

    Time to first recurrence of lesion as reported by patient and verified by investigator.

    Time frame: 16 weeks

Other outcomes

  1. HSV-2 shedding rate.

    Viral shedding rate is defined as the number of positive anogenital swabs divided by total number of swabs.

    Time frame: 8 weeks

  2. Clinical and Subclinical HSV-2 Shedding Rates

    Daily record of subject self-assessment of genital lesions in subject diary in addition to anogenital swabs collected daily from subjects during the follow-up periods will be used to evaluate the clinical (lesional) and subclinical (non-lesional) HSV-2 shedding rates.

    Time frame: 8 weeks

  3. Rate of HSV-2 Shedding Episodes

    The rate of HSV-2 shedding episodes is the number of onsets of shedding episodes divided by the total number of days with swabs collected. Shedding episodes are defined as consecutive HSV-2 positive swab results including no more than 1 consecutive negative result or missed swab. The episodes are preceded and followed by 2 consecutive negative swab results.

    Time frame: 8 weeks

  4. HSV-2 viral load

    Anogenital swab samples collected from subjects during follow-up period will be used to quantify HSV-2 DNA copies.

    Time frame: 8 weeks

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 18, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04714060
Lead sponsor
UBP Greater China (Shanghai) Co., Ltd
Responsible party
Sponsor
First posted
Jan 19, 2021
Start date
Oct 1, 2023 (estimated)
Primary completion
Oct 1, 2024 (estimated)
Completion
Jan 31, 2025 (estimated)
Last update
May 18, 2022

Study contacts

Linda Shih, DVM
Contact
linda.shih@unitedbiopharma.com
+886 36684800 ext. 3851

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in May 2022. You cannot join it, but the record below documents what was studied.

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