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A Study to Investigate Pharmacokinetics, Safety and Tolerability of Long-Acting Cabotegravir Plus Recombinant Human Hyaluronidase PH20 in Healthy Adult Participants

A Phase I, Multi-centre, Open-label, Single Dose Escalation Study to Evaluate the Pharmacokinetics, Safety and Tolerability of Long-acting Cabotegravir Co-administered With Recombinant Human Hyaluronidase PH20 (rHuPH20) in Healthy Adult Volunteers

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05418868
Enrollment
214
Registered
2022-06-14
Start date
2022-06-14
Completion date
2027-06-08
Last updated
2025-12-18

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

Conditions

HIV Infections

Keywords

Cabotegravir (CAB), Rilpivirine (RPV), Long-Acting Injection, Pharmacokinetics, Safety, Tolerability

Brief summary

This is an open-label, dose-escalation study to investigate the safety, tolerability and pharmacokinetics (PK) of single subcutaneous (SC) administration of long acting (LA) Cabotegravir (CAB) 200 milligrams per milliliter (mg/mL) with Recombinant Human Hyaluronidase PH20 (rHuPH20) (Part A), a single-dose or repeat-dose SC or intramuscular (IM) administration of LA CAB (greater than or equal to) \>=400 mg/mL (Part C), single-dose IM administration of LA CAB Formulation I (Part C Cohort C8) and LA CAB Formulation J (Part C Cohort C11), and a single-dose or repeat-dose IM administration of rilpivirine (RPV) (Part E). Part A of the study (CAB 200 mg/mL with rHuPh20) has been closed to further enrolment based on preliminary results. Part D of the study (CAB \>=400 mg/mL with rHuPH20) will not be conducted due to changes in the study design.

Interventions

CAB 200 mg/mL will be administered.

DRUGCabotegravir >=400 mg/mL

CAB \>=400 mg/mL will be administered by IM or SC injection.

DRUGCabotegravir Formulation I

CAB Formulation I will be administered by IM injection.

DRUGCAB Formulation J

CAB Formulation J will be administered by IM injection.

rHuPH20 will be administered.

DRUGRPV

RPV will be administered by IM injection.

Sponsors

GlaxoSmithKline
CollaboratorINDUSTRY
Janssen Sciences Ireland Unlimited Company
CollaboratorUNKNOWN
ViiV Healthcare
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* At the time of obtaining informed consent, participants age should be greater than or equal to (\>=)18 years and less than or equal to (\<=) 55 years. * Participants who are overtly healthy as determined by medical evaluation including medical history, physical examination, laboratory tests, and cardiac monitoring. * Body weight \>=40 kilogram (kg) and body mass index (BMI) within the range \>=18 to \<=32 kilogram per meter square (kg/m\^2). * Participants who are negative on a single test for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (approved molecular polymerase chain reaction \[PCR\] laboratory or point of care test), performed on the day of admission. A negative result is required prior to the administration of study intervention on Day 1. * Contraceptive use by men and women should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies. * Capable of giving written informed consent.

Exclusion criteria

* Current presence or history of cardiovascular, respiratory, hepatic, renal, gastrointestinal, endocrine, hematological, or neurological disorders. * Current or chronic history of liver disease or known hepatic or biliary abnormalities. * History of ongoing or clinically relevant seizure disorder within the previous 2 years, including participants who have required treatment for seizures within this time period. * Positive SARS-CoV-2 polymerase chain reaction test, having signs and symptoms which in the opinion of the investigator are suggestive of coronavirus disease 2019 (COVID-19) (i.e., fever, cough etc) within 14 days of inpatient admission, or having contact with known COVID-19 positive person/s in the 14 days prior to inpatient admission. * Human immunodeficiency virus (HIV-1 or HIV-2) infection as indicated by positive antibody/antigen test. * History of or on-going high-risk behaviors that, in the opinion of the investigator, may put the participant at increased risk for HIV infection including, but not limited to, participants in HIV discordant relationships, or men who report current or prior unprotected anal sex with other men and those reporting prior or current injecting drug use. * Presence of hepatitis B surface antigen (HBsAg), or positive hepatitis C antibody test result at screening or within 3 months prior to first dose of study treatment. * Abnormal blood pressure. * Evidence of previous myocardial infarction. * Any conduction abnormality (including but not specific to left or right complete bundle branch block, atrioventricular \[AV\] block \[2nd degree or higher\], Wolff- Parkinson-White \[WPW\] syndrome). * Any significant arrhythmia which, in the opinion of the investigator or the medical monitor, will interfere with the safety for the individual participant. * One or more exclusionary values for a screening Electrocardiogram (ECG). * Alanine transaminase (ALT) \>1.5x upper limit of normal (ULN). * Bilirubin \>1.5xULN (isolated bilirubin \>1.5xULN is acceptable if bilirubin is fractionated and direct bilirubin \<35 percent \[%\]). * Estimated Glomerular Filtration Rate (eGFR) \<60 milliliter per minute (mL/min) using the Chronic Kidney Disease * Improved Prediction Equations (CKD-EPI) Creatinine Equation (2021). * Hemoglobin \<12.5 gram per deciliter (g/dL) for men and \<11 g/dL for women. * Positive pre-study drug/alcohol screen. * Regular use of tobacco- or nicotine-containing products within 3 months prior to screening; or urinary cotinine levels indicative of smoking or history or regular use of tobacco- or nicotine-containing products (e.g., nicotine patches or vaporizing devices). * Regular alcohol consumption within 6 months prior to the study defined as an average weekly intake of \>14 units for males or \>7 units for females. * Regular use of known drugs of abuse. * Concurrent participation in another clinical trial (except imaging trials); or has participated in a clinical trial and received an investigational product within the following time period prior to the first dosing day in this study: 30 days, 5 half-lives or twice the duration of the biological effect of the investigational product (whichever is longer). * Participation in the study would result in loss of blood or blood products in excess of 500 mL within 56 days. * Exposure to more than four (4) new chemical entities within 12 months prior to the first dosing day. * History of sensitivity to any of the study interventions (or components thereof), a history of drug allergy or other allergy that, in the opinion of the investigator or medical monitor, contraindicates their participation, including a known hypersensitivity to hyaluronidases. * Current or anticipated need for chronic anti-coagulation therapy. * Hereditary coagulation and platelet disorders (e.g., hemophilia or Von Willebrand disease \[VWD\]). * Participant has a tattoo overlying the location of injection or an underlying skin disease or condition (e.g., infection, inflammation, dermatitis, eczema, drug rash, drug allergy, psoriasis, food allergy, urticaria) that, in the opinion of the investigator, may interfere with interpretation of injection site reactions or administration of study intervention. * Any other clinical condition, behavior or prior therapy that, in the opinion of the investigator, would make the participant unsuitable for the study; unable to comply with dosing requirements; or unable to comply with study visits. * Participant who in the investigator's judgment poses a significant suicidality risk. Participant's history of suicidal behavior and/or suicidal ideation should be considered when evaluating for suicide risk.

Design outcomes

Primary

MeasureTime frameDescription
Number of participants with maximum toxicity grades increase from Baseline in hematology and clinical chemistryUp to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Change from Baseline in Hematology parameter: RBC Count (million cells per microliter)Baseline (Day 1) and up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Change from Baseline in Hematology parameter: MCV (Femtoliters)Baseline (Day 1) and up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Change from Baseline in Hematology parameter: MCH (picograms)Baseline (Day 1) and up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Change from Baseline in Hematology parameters: Differential count of Neutrophils, Lymphocytes, Monocytes, Eosinophils, Basophils (Giga cells per liter)Baseline (Day 1) and up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Change from Baseline in Clinical Chemistry parameters: Glucose (fasting), BUN, Creatinine, Sodium, Potassium, Calcium, Direct Bilirubin and Total Bilirubin (milligrams per deciliter)Baseline (Day 1) and up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Change from Baseline in Clinical Chemistry parameters: AST/SGOT, ALT/ SGPT, ALP and CPK (International Units per liter)Baseline (Day 1) and up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Change from Baseline in Clinical chemistry parameters: Albumin and Total Protein (Grams per deciliter)Baseline (Day 1) and up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Plasma Concentration of RPV at Week 32Week 32
Plasma Concentration of CAB at Week 36Week 36
Plasma Concentration of RPV at Week 40Week 40
Plasma Concentration of CAB and RPV at Week 48Week 48
Plasma Concentration of CABAt weeks 56, 64 and 72 for Cohorts C11 and C10 [Part C]
Plasma Concentration of RPV at Week 56Week 56
Plasma Concentration of RPV at Week 64Week 64
Plasma Concentration of RPV at Week 72Week 72
Maximum observed plasma concentration (Cmax) of CAB and RPVUp to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Time of maximum observed plasma concentration (tmax) of Cabotegravir CAB and RPVUp to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Area under the concentration - time curve from time zero to infinity (AUC[0-inf]) of CAB and RPVUp to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Area under the concentration - time curve from time zero to time of last quantifiable concentration or 4 weeks following the injection whichever is earlier (AUC[0-t]) of CAB and RPVUp to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Cohorts Part A, C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohort C10 [Part C])
Area under the concentration - time curve from time zero to last quantifiable time point or 8 weeks following the injection whichever is earlier [AUC(0-t)]Up to end of study (Week 72 for Cohort C10 [Part C])
Plasma Concentration of CAB and RPV at Week 4Week 4
Plasma Concentration of CAB and RPV at Week 8Week 8
Plasma Concentration of CAB and RPV at Week 12Week 12
Plasma Concentration of CAB and RPV at Week 16Week 16
Plasma Concentration of CAB and RPV at Week 24Week 24
Apparent terminal phase half-life (t1/2) of CAB and RPVUp to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Apparent long-acting absorption rate constant (KA-LA) of CAB and RPVUp to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Number of Participants with Non-serious Adverse Events (non-SAEs) and Serious Adverse Events (SAEs)Up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Number of Participants with AEs by SeverityUp to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Absolute value of Hematology parameter: Platelet count (cells per microliter)Up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Absolute values of Hematology parameters: Reticulocytes (Percentage of reticulocytes)Up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Absolute values of Hematology parameters: Hematocrit (Proportion of red blood cells in blood)Up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Absolute values of Hematology parameters: Hemoglobin (Hgb) (grams per deciliter)Up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C] , and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Absolute value of Hematology parameter: Red Blood Cell Count (RBC) (million cells per microliter)Up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C] , and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Absolute value of Hematology parameter: Mean Corpuscle Volume (MCV) (Femtoliters)Up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C] , and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Absolute value of Hematology parameter: Mean Corpuscle Hemoglobin (MCH) (Picograms)Up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Absolute values of Hematology parameters: Differential count of Neutrophils, Lymphocytes, Monocytes, Eosinophils, Basophils (giga cells per liter)Up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Absolute values of Clinical Chemistry parameters: Glucose (fasting), Blood Urea Nitrogen (BUN), Creatinine, Sodium, Potassium, Calcium, Direct Bilirubin and Total Bilirubin (milligrams per deciliter)Up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Absolute values of Clinical Chemistry parameters: AST/SGOT, ALT/ SGPT, ALP and CPK (International Units per liter)Up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])Clinical chemistry parameters such as Aspartate Aminotransferase (AST) / Serum Glutamic-Oxaloacetic Transaminase (SGOT), Alanine Aminotransferase (ALT)/ Serum Glutamic-Pyruvic Transaminase and (SGPT), Alkaline phosphatase (ALP) and Creatinine Phosphokinase (CPK) will be analyzed.
Absolute values of Clinical chemistry parameters: Albumin and Total Protein (Grams per deciliter)Up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Change from Baseline in Hematology parameter: Platelet count (cells per microliter)Baseline (Day 1) and up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Change from Baseline in Hematology parameters: Reticulocytes (Percentage of reticulocytes)Baseline (Day 1) and up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Change from Baseline in Hematology parameters: Hematocrit (Proportion of red blood cells in blood)Baseline (Day 1) and up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Change from Baseline in Hematology parameters: Hgb (grams per deciliter)Baseline (Day 1) and up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])

Secondary

MeasureTime frameDescription
Dose proportionality of CAB and RPV based on AUC(0-t)Up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Dose proportionality of CAB and RPV based on CmaxUp to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Dose proportionality of CAB and RPV based on plasma concentrationWeeks 4, 8, 12 and 24
Number of participants with maximum post-baseline QTc values compared to baseline by category (to <=450 milliseconds (msec) or no change, to >450 msec to <=480 msec, to >480 msec to <=500 msec, and to >500 msec)Up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Number of participants with maximum post-baseline increase in QTc values compared to baseline based on category (increase <=30 msec, increase of 31-60 msec, and increase of >60 msec)Up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])
Number of participants with worst case post-baseline values relative to potential clinical importance criteria compared to baseline for diastolic blood pressure (DBP), systolic blood pressure (SBP) and pulse rateUp to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])Number of participants with worst case post-baseline values relative to potential clinical importance criteria compared to baseline will be categorized into change to low, change to within range or no change, and change to high.
Dose proportionality of CAB and RPV based on AUC(0-inf)Up to end of study (Week 78 for Cohorts C1 and C3 [Part C], Week 52 for Part A, Cohorts C2, C4, C5, C6, C7, C8, C9 [Part C], and Week 72 for Part E and Cohorts C10 and C11 [Part C])

Countries

United States

Contacts

Primary ContactUS GSK Clinical Trials Call Center
GSKClinicalSupportHD@gsk.com877-379-3718
Backup ContactEU GSK Clinical Trials Call Center
GSKClinicalSupportHD@gsk.com+44 (0) 20 89904466

Outcome results

None listed

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