Status and phase
Conditions
Treatments
About
Many HIV-infected individuals mount a broad neutralizing serologic response 2-3 years after infection. Broadly neutralizing antibodies might play an important role in protection from acquisition of HIV infection because they can protect macaques from infection, and the presence of anti-HIV antibodies was the only positive correlate of protection in an HIV vaccine efficacy trial (RV144 trial). HIV neutralizing antibodies also have the potential to alter the course of HIV infection in humans. Therefore, these antibodies might be useful to both prevent and treat HIV-1 infection.
This is a phase 1 dose escalating clinical trial to evaluate the safety, tolerability, pharmacokinetics and the antiretroviral effects of a novel bispecific monoclonal antibody 10E8.4/iMab in HIV-infected and HIV-uninfected individuals. The study will be conducted as a multi-center study at the Columbia University Medical Center in New York City and the Orlando Immunology Center in Orlando, Florida.
Full description
There are 4 study Arms as it is possible that pharmacokinetics (PK) may differ between HIV-1-uninfected individuals (Arms 1, 2 and 4) and HIV-1-infected and viremic individuals (Arm 3). Safety and tolerability as well as PK may differ between the IV and SC routes, Arms 1, 2 and 4.
A dose escalation design has been used to establish safety and tolerability at very low doses of 10E8.4/iMab as this is a first in man study. Once demonstrated, dose levels would be increased to dosing levels thought to be more clinically relevant.
The numbers of subjects receiving active antibody in each study arm are relatively balanced such that an initial evaluation of the primary endpoint with additional dosing to provide insights into both PK and antiviral activity as well as some exploratory endpoints such as immunogenicity will be possible.
This study is a phase 1 clinical trial to evaluate the safety and tolerability, pharmacokinetics and the antiretroviral activity of the bispecific monoclonal antibody 10E8.4/iMab in HIV-infected and HIV-uninfected individuals.
HIV uninfected, healthy volunteers will be administered either one intravenous infusion of 10E8.4/iMab at one of five increasing dose levels (0.3 mg/kg, 1 mg/kg, 3 mg/kg, 10 mg/kg and 30 mg/kg) or one SC injection of 1 mg/kg, 2.5 mg/kg or 10 mg/kg or placebo and will be followed for 24 weeks after 10E8.4/iMab administration. HIV-infected volunteers will be administered one intravenous infusion of 10E8.4/iMab at one of three increasing dose levels (3 mg/kg, 10 mg/kg and 30 mg/kg).
Arm 1 consists of 3 groups: Group A: 0.3 mg/kg IV, N=3; Group B: 1mg/kg SC, N=3; and Group C: 1mg/kg IV, N=3. All HIV-1 uninfected, dosed once.
Arm 2 consists of 3 groups: Group D: 3mg/kg, N=6; Group E: 10mg/kg, N=6; and Group F: 30 mg/kg, N=6. All HIV-1 uninfected, dosed IV once.
Arm 3 consists of 2 groups: H: 10mg/kg, N=4 and Group I: 30 mg/kg, N=4. All HIV-1 infected, dosed IV once.
Arm 4 consists of 2 groups: Group J: 2.5 mg/kg, N=9, 6 active, 3 placebo; Group K: 10mg/kg, N=9, 6 active, 3 placebo, dosed SC once.
Since the safety and tolerability profiles, as well as the PK profile might differ between HIV-infected and HIV-uninfected individuals, dose-escalation is planned in both study populations. Dosing in Arm 1 Groups A, B and C; Arm 2 Groups D and E; and Arm 4 Groups J and K will be done prior to initiation of dosing in Arm 3 due to safety considerations.
Arm 3 will include HIV-infected individuals off antiretroviral therapy (ART) for at least 4 weeks with plasma HIV-1 RNA levels < 100,000 copies/ml (both ART naïve and individuals that discontinued ART due to intolerance or by choice can be included in this group), or HIV-infected individuals on stable ART with plasma HIV-1 RNA levels > 1000 copies/ml.
The stated numbers of participants are the minimal number per dosing group. A safety monitoring committee may request additional enrollment in a specific Arm or Group based on the occurrence of dose limiting toxicities defined as any Grade 3 or greater adverse event that is probably or definitely related to the investigational product.
Study visits are all outpatient and include:
Enrollment
Sex
Ages
Volunteers
Inclusion and exclusion criteria
Inclusion Criteria for HIV uninfected volunteers: Arms 1, 2 and 4:
Inclusion Criteria for HIV-1-Infected Viremic Subjects: Arm 3
Aged >18 and <60 years at the time of screening
Ability and willingness to provide written informed consent
Willingness to comply with protocol schedule
Willingness to undergo HIV-1 testing
Reactive 4th generation point of care HIV-1 test at screening
Plasma HIV-1 RNA levels > 2,000 copies/mL and < 100,000 copies/mL in subjects who are either:
Current CD4+ T cell count > 350 cells/mm3 and a nadir CD4+ T cell count > 250 cells/mm3
Agrees not to begin or change antiretroviral therapy for 6 weeks after 10E8.4/iMab infusion despite a clear explanation of current Department of Health and Human Services (DHHS) guidelines
Hepatitis B Surface antigen negative
Hepatitis C antibody negative or if reactive Hepatitis C RNA undetectable in plasma
Volunteers born female of reproductive potential, sexually active with a male sex partner agree to use one effective method of contraception from the time of signing the consent to completion of the study and agree to pregnancy testing as per the schedule of events.
Study participants born female with reproductive potential are defined as pre-menopausal volunteers born female who have not had a sterilization procedure (e.g. hysterectomy, bilateral oophorectomy, tubal ligation or salpingectomy). Volunteers born female are considered menopausal if they have not had a menses for at least 12 months and have an FSH of greater than 40 IU/L or if FSH testing is not available, they have had amenorrhea for 24 consecutive months.
Exclusion Criteria for HIV uninfected volunteers: Arms 1, 2 and 4:
Confirmed HIV-1 infection
At high risk of HIV-1 infection as defined by:
Weight above 100 kg at screening. Note that subjects above 80 kg may not be randomized into the SC dosing group in Arm 4.
Any acute or chronic medical condition that in the opinion of the investigator would preclude participation
Immunodeficiency or chronic autoimmune disease
Intravenous drug use
Excessive use of alcohol or recreational drugs that in the opinion of the investigator would preclude participation.
Decompensated psychiatric illness
Need for chronic immunotherapy including systemic corticosteroids, other monoclonal antibody therapy, or immunosuppressive drugs
If born female, pregnant, lactating or planning on becoming pregnant over the study period
Any of the following laboratory parameters:
Any vaccine administration within 14 days of study entry
Experimental HIV-1 vaccine in past (active arm of an HIV-1 vaccine trial if applicable)
Previous receipt of an experimental mAb to HIV-1 in a research study
History of severe allergic reactions to drugs, vaccines, or drug infusion
Participation in another investigational clinical trial within the past 12 weeks or anticipated during the course of the current study
Exclusion Criteria for HIV-1-Infected Viremic Subjects: Arm 3
Any acute or chronic medical condition that in the opinion of the investigator would preclude participation
A history of virologic failure of two or more combination antiretroviral treatment regimens. A regimen switch due solely to intolerance and not virologic failure does not qualify as a failed regimen.
Weight above 100 kg at the time of screening.
Intravenous drug use
Excessive use of alcohol or recreational drugs that in the opinion of the investigator would preclude participation
Decompensated psychiatric illness
Need for chronic immunotherapy including systemic corticosteroids, other monoclonal antibody therapy, or immunosuppressive drugs
If born female, pregnant, lactating or planning on becoming pregnant over the study period
Any of the following laboratory parameters
Any vaccine administration within 14 days of study entry
Experimental HIV-1 vaccine in past (active arm of an HIV-1 vaccine trial if applicable)
Participation in a research study of a neutralizing monoclonal antibody (mAb) to HIV-1
History of severe allergic reactions to drugs, vaccines, or drug infusion
Participation in another investigational clinical trial within the past 12 weeks or anticipated during the course of the current study
Primary purpose
Allocation
Interventional model
Masking
54 participants in 4 patient groups
Loading...
Data sourced from clinicaltrials.gov
Clinical trials
Research sites
Resources
Legal