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To Investigate the Efficacy and Safety of UB-421 Monotherapy in HIV-1 Infected Adults

A Phase III, Randomized, Open-label, Controlled Trial to Investigate the Efficacy and Safety of UB-421 Monotherapy as Substitution for Stable Antiretroviral Therapy in HIV-1 Infected Adults

Status
Withdrawn
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03149211
Enrollment
0
Registered
2017-05-11
Start date
2025-04-01
Completion date
2025-12-31
Last updated
2023-04-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

HIV-1 Infection

Brief summary

The purpose of this phase III study is to evaluate the efficacy, safety and tolerability of UB-421 monotherapy in suppressing viral rebound in HIV-1 infected adults undergoing antiretroviral treatment interruption.

Detailed description

This is an open-label, Phase III study to evaluate the efficacy, safety and tolerability of UB-421 monotherapy in suppressing viral rebound while replace HAART in virally suppressed HIV-1 infected adults. In this study, approximately 375 subjects on stable HAART treatment will be randomized to receive either continuing HAART treatment alone (Cohort 1) or UB-421 as the monotherapy (Cohort 2) in 1:2 ratio. For Cohort 1, subjects will receive current standard HAART treatment as the active control group. For Cohort 2, UB-421 will be administered to enrolled subjects without HAART treatment in the Cohort 2 during the 26-week treatment period. After treatment period, both cohort 1 and cohort 2 enter 22-week follow-up period.

Interventions

DRUGUB-421

Subjects will receive 13 doses of the UB-421 by intravenous infusion at 25 mg/kg bi-weekly (Cohort 2, 26 weeks).

DRUGcurrent standard HAART treatment

Subjects will receive current standard HAART treatment as the active control group.

Sponsors

United BioPharma
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
20 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* HIV-1 sero-positive * Aged 20 years or older * Were not breastfeeding for women * Subjects with a negative serum pregnancy test result at screening visit for women of childbearing potential * Subjects agree on using birth control barrier (female or male condom) during the entire study period * Subjects sign the informed consent before undergoing any study procedures

Exclusion criteria

* Any active infection except for HIV, and required immediate therapy * Any active AIDS-defining illness per Category B and Category C conditions according to the U.S. Centers for Disease Control and Prevention (CDC) Classification System for HIV Infection * Any significant diseases (other than HIV-1 infection) or clinically significant findings, including psychiatric and behavioral problems, determined from screening, medical history, and/or physical examination that, in the investigator's opinion, would preclude the subject from participating in this study * Life expectancy less than 12 months * Any alcohol or illicit drug used, according to the investigator's opinion, will interfere with the subject's ability to comply with the dosing, visit schedules and protocol evaluations

Design outcomes

Primary

MeasureTime frame
Number of participants without virologic failure24 weeks

Secondary

MeasureTime frame
Time to virologic failure26 weeks
Number of participants with treatment-related adverse events48 weeks
Peak concentration of UB-421 in Cohort 230 weeks
Trough concentration of UB-421 in Cohort 230 weeks

Countries

China

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026