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NCT Number: NCT05418868

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

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.

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Key information

Age range

18 year–55 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

GSK Investigational Site, Orlando, Florida, United States

Loading trial locations.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

Cabotegravir 200 mg/mL

Drug

CAB 200 mg/mL will be administered.

Cabotegravir >=400 mg/mL

Drug

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

Cabotegravir Formulation I

Drug

CAB Formulation I will be administered by IM injection.

CAB Formulation J

Drug

CAB Formulation J will be administered by IM injection.

rHuPH20

Drug

rHuPH20 will be administered.

RPV

Drug

RPV will be administered by IM injection.

Primary outcomes

  1. Maximum observed plasma concentration (Cmax) of CAB and RPV

    Time frame: 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])

  2. Time of maximum observed plasma concentration (tmax) of Cabotegravir CAB and RPV

    Time frame: 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])

  3. Area under the concentration - time curve from time zero to infinity (AUC[0-inf]) of CAB and RPV

    Time frame: 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])

  4. 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 RPV

    Time frame: Up 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])

  5. 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)]

    Time frame: Up to end of study (Week 72 for Cohort C10 [Part C])

  6. Plasma Concentration of CAB and RPV at Week 4

    Time frame: Week 4

  7. Plasma Concentration of CAB and RPV at Week 8

    Time frame: Week 8

  8. Plasma Concentration of CAB and RPV at Week 12

    Time frame: Week 12

  9. Plasma Concentration of CAB and RPV at Week 16

    Time frame: Week 16

  10. Plasma Concentration of CAB and RPV at Week 24

    Time frame: Week 24

  11. Plasma Concentration of RPV at Week 32

    Time frame: Week 32

  12. Plasma Concentration of CAB at Week 36

    Time frame: Week 36

  13. Plasma Concentration of RPV at Week 40

    Time frame: Week 40

  14. Plasma Concentration of CAB and RPV at Week 48

    Time frame: Week 48

  15. Plasma Concentration of CAB

    Time frame: At weeks 56, 64 and 72 for Cohorts C11 and C10 [Part C]

  16. Plasma Concentration of RPV at Week 56

    Time frame: Week 56

  17. Plasma Concentration of RPV at Week 64

    Time frame: Week 64

  18. Plasma Concentration of RPV at Week 72

    Time frame: Week 72

  19. Apparent terminal phase half-life (t1/2) of CAB and RPV

    Time frame: 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])

  20. Apparent long-acting absorption rate constant (KA-LA) of CAB and RPV

    Time frame: 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])

  21. Number of Participants with Non-serious Adverse Events (non-SAEs) and Serious Adverse Events (SAEs)

    Time frame: 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])

  22. Number of Participants with AEs by Severity

    Time frame: 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])

  23. Absolute value of Hematology parameter: Platelet count (cells per microliter)

    Time frame: 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])

  24. Absolute values of Hematology parameters: Reticulocytes (Percentage of reticulocytes)

    Time frame: 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])

  25. Absolute values of Hematology parameters: Hematocrit (Proportion of red blood cells in blood)

    Time frame: 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])

  26. Absolute values of Hematology parameters: Hemoglobin (Hgb) (grams per deciliter)

    Time frame: 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])

  27. Absolute value of Hematology parameter: Red Blood Cell Count (RBC) (million cells per microliter)

    Time frame: 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])

  28. Absolute value of Hematology parameter: Mean Corpuscle Volume (MCV) (Femtoliters)

    Time frame: 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])

  29. Absolute value of Hematology parameter: Mean Corpuscle Hemoglobin (MCH) (Picograms)

    Time frame: 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])

  30. Absolute values of Hematology parameters: Differential count of Neutrophils, Lymphocytes, Monocytes, Eosinophils, Basophils (giga cells per liter)

    Time frame: 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])

  31. Absolute values of Clinical Chemistry parameters: Glucose (fasting), Blood Urea Nitrogen (BUN), Creatinine, Sodium, Potassium, Calcium, Direct Bilirubin and Total Bilirubin (milligrams per deciliter)

    Time frame: 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])

  32. Absolute values of Clinical Chemistry parameters: AST/SGOT, ALT/ SGPT, ALP and CPK (International Units per liter)

    Time frame: 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.

  33. Absolute values of Clinical chemistry parameters: Albumin and Total Protein (Grams per deciliter)

    Time frame: 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])

  34. Change from Baseline in Hematology parameter: Platelet count (cells per microliter)

    Time frame: 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])

  35. Change from Baseline in Hematology parameters: Reticulocytes (Percentage of reticulocytes)

    Time frame: 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])

  36. Change from Baseline in Hematology parameters: Hematocrit (Proportion of red blood cells in blood)

    Time frame: 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])

  37. Change from Baseline in Hematology parameters: Hgb (grams per deciliter)

    Time frame: 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])

  38. Change from Baseline in Hematology parameter: RBC Count (million cells per microliter)

    Time frame: 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])

  39. Change from Baseline in Hematology parameter: MCV (Femtoliters)

    Time frame: 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])

  40. Change from Baseline in Hematology parameter: MCH (picograms)

    Time frame: 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])

  41. Change from Baseline in Hematology parameters: Differential count of Neutrophils, Lymphocytes, Monocytes, Eosinophils, Basophils (Giga cells per liter)

    Time frame: 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])

  42. Change from Baseline in Clinical Chemistry parameters: Glucose (fasting), BUN, Creatinine, Sodium, Potassium, Calcium, Direct Bilirubin and Total Bilirubin (milligrams per deciliter)

    Time frame: 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])

  43. Change from Baseline in Clinical Chemistry parameters: AST/SGOT, ALT/ SGPT, ALP and CPK (International Units per liter)

    Time frame: 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])

  44. Change from Baseline in Clinical chemistry parameters: Albumin and Total Protein (Grams per deciliter)

    Time frame: 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])

  45. Number of participants with maximum toxicity grades increase from Baseline in hematology and clinical chemistry

    Time frame: 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 outcomes

  1. Dose proportionality of CAB and RPV based on AUC(0-inf)

    Time frame: 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])

  2. Dose proportionality of CAB and RPV based on AUC(0-t)

    Time frame: 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])

  3. Dose proportionality of CAB and RPV based on Cmax

    Time frame: 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])

  4. Dose proportionality of CAB and RPV based on plasma concentration

    Time frame: Weeks 4, 8, 12 and 24

  5. 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)

    Time frame: 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])

  6. 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)

    Time frame: 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])

  7. 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 rate

    Time frame: 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 will be categorized into change to low, change to within range or no change, and change to high.

Study contacts

Contact information is provided by the study sponsor or research team.

EU GSK Clinical Trials Call Center

CONTACT

[email protected]

+44 (0) 20 89904466

US GSK Clinical Trials Call Center

CONTACT

[email protected]

877-379-3718

Sponsors and collaborators

Lead sponsor

ViiV Healthcare

Industry

Collaborators

  • GlaxoSmithKline
  • Janssen Sciences Ireland Unlimited Company

Registry information

Official study title

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

Important dates

Study start
2022
Primary completion
2027
Study completion
2027
First posted
Jun 14, 2022
Registry last updated
Dec 18, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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