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Safety, PK and Antiviral Activity of PGT121 Monoclonal Antibody in HIV-uninfected and HIV-infected Adults

A Phase 1 Randomized Placebo-controlled Clinical Trial of the Safety, Pharmacokinetics and Antiviral Activity of PGT121 Monoclonal Antibody (mAb) in HIV-uninfected and HIV-infected Adults

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02960581
Enrollment
48
Registered
2016-11-09
Start date
2016-11-30
Completion date
2019-07-08
Last updated
2019-09-17

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

Conditions

HIV Infection

Brief summary

This is a Phase 1 study to evaluate the safety, tolerability, pharmacokinetics and anti-viral efficacy of the PGT121 monoclonal antibody for HIV prevention and therapy.

Detailed description

This is a Phase 1 study to evaluate the safety, tolerability, pharmacokinetics and anti-viral efficacy of the PGT121 monoclonal antibody for HIV prevention and therapy. PGT121 mAb is a recombinant human IgG1 monoclonal antibody that targets a V3 glycan-dependent epitope region of the HIV envelope protein. PGT121 mAb was chosen for this study because it is potent, neutralizes a wide array of HIV viruses, and can prevent and treat simian-human immunodeficiency virus (SHIV) in rhesus monkeys.

Interventions

BIOLOGICALPGT121 3mg/kg IV

3mg/kg administered by IV Infusion

BIOLOGICALPGT121 10mg/kg IV

10mg/kg administered by IV infusion

BIOLOGICALPGT121 30mg/kg IV

30mg/kg administered by IV infusion

BIOLOGICALPGT121 3mg/kg SC

3mg/kg administered by SC injection Placebo: None

BIOLOGICALPlacebo (0.9% Sodium Chloride Injection USP (Saline))

Sponsors

Beth Israel Deaconess Medical Center, Boston MA
CollaboratorUNKNOWN
Ragon Institute of MGH, MIT and Harvard, Boston MA
CollaboratorUNKNOWN
University of Texas Health, Houston AIDS Research Team (HART), Houston TX
CollaboratorUNKNOWN
Mills Clinical Research, Los Angeles CA
CollaboratorUNKNOWN
Orlando Immunology Clinic, Orlando FL
CollaboratorUNKNOWN
International AIDS Vaccine Initiative
Lead SponsorNETWORK

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

Group 1 Inclusion Criteria: * HIV-uninfected males or females age 18-50 years old * Willing to maintain low risk behavior for HIV infection Group 1

Exclusion criteria

* confirmed HIV-infection, pregnancy or lactation, significant acute or chronic disease and clinically significant laboratory abnormalities Group 2 Inclusion Criteria: * HIV-infected males or females age 18-65 years old * On a stable antiretroviral regimen with HIV-1 RNA plasma level \<50 copies/ml, CD4 cell count greater than or equal to 300 cells/uL Group 2

Design outcomes

Primary

MeasureTime frameDescription
Proportion of participants with PGT121 mAb reactogenicity, related AEs and SAEs6 Months post infusionThe investigators will measure the following endpoints to evaluate the safety and tolerability of PGT121 mAb in HIV-uninfected and HIV-infected adults: 1. Proportion of participants with moderate or greater reactogenicity (e.g., solicited adverse events) for 3 days following IV infusion of PGT121 mAb. 2. Proportion of participants with moderate or greater and/or PGT121 mAb-related unsolicited adverse events (AEs), including safety laboratory (biochemical, hematological) parameters, following IV infusion of PGT121 mAb for the first 56 days post administration of Investigational Product. 3. Proportion of participants with PGT121 mAb-related serious adverse events (SAEs) throughout the study period.
Pharmacokinetics: elimination half-life (t1/2)6 Months post infusionPharmacokinetics: elimination half-life (t1/2)
Pharmacokinetics: Clearance (CL/F)6 Months post infusionPharmacokinetics: Clearance (CL/F)
Pharmacokinetics: Volume of distribution (Vz/F)6 months post infusionPharmacokinetics: Volume of distribution (Vz/F)
Pharmacokinetics: Area under the concentration decay curve (AUC)6 months post infusionPharmacokinetics: Area under the concentration decay curve (AUC)
Pharmacokinetics: Impact of viral load and/or ART on PGT121 disposition, volume of distribution, total exposure6 months post infusionPharmacokinetics: Impact of viral load and/or ART on PGT121 disposition, volume of distribution, total exposure
Antiviral Activity6 Months post infusionChange in plasma HIV-1 RNA levels from baseline (mean of pre-entry and entry values)

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 2, 2026