A Phase 1 interventional study of VH5356136 Formulation 1 and VH5356136 Formulation 2 in HIV Infections, sponsored by ViiV Healthcare. Not yet recruiting. Open to participants aged 18 Years to 55 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-09-16.
Sponsored by ViiV Healthcare (part of GlaxoSmithKline) · Phase 1, Interventional, and Treatment
The study aims to evaluate the safety, tolerability and pharmacokinetic (PK) properties of a single dose of VH5356136 in adult participants without human immunodeficiency virus (HIV). This study will be conducted following the availability of initial safety and PK clinical data from formulation of the parent drug VH4524184.
4,734 studies on the registry are indexed under HIV Infections; 244 are open to participants now.
This study's planned enrollment of 160 is above the median of 80 across 3,489 interventional studies indexed under HIV Infections.
Browse HIV Infections studies →ViiV Healthcare is the lead sponsor of 265 studies on the registry; 16 are open to participants now.
Of its 71 completed or terminated interventional studies of FDA-regulated products, 53 (75%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
The criteria presented above represent a subset of the key inclusion criteria for the study. Additional criteria, restrictions, and eligibility requirements may apply as specified in the study protocol.
Exclusion Criteria:
The criteria presented above represent a subset of the key exclusion criteria for the study. Additional criteria, restrictions, and eligibility requirements may apply as specified in the study protocol.
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.
After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Childbearing potential
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hypersensitivity
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Clinically significant
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis B tests
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis C tests
Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.
After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
QT and QTc
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants will receive a single dose of VH5356136 Formulation 1 administered on Day 1.
Drug: VH5356136 Formulation 1
Participants will receive a single dose of placebo for VH5356136 Formulation 1 administered on Day 1.
Drug: Placebo for VH5356136 Formulation 1
Participants will receive a single dose of VH5356136 Formulation 2 administered on Day 1.
Drug: VH5356136 Formulation 2
Participants will receive a single dose of placebo for VH5356136 Formulation 2 administered on Day 1.
Drug: Placebo for VH5356136 Formulation 2
Participants will receive VH5356136 Formulation 1 on Day 1.
Participants will receive VH5356136 Formulation 2 on Day 1.
Participants will receive placebo for VH5356136 Formulation 1 on Day 1.
Participants will receive placebo for VH5356136 Formulation 2 on Day 1.
Number of participants with drug-related adverse events (AEs)
An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of a study intervention, whether or not considered related to the study intervention. A drug-related AE is an AE that, in the opinion of the investigator, is related to one of the study interventions.
Time frame: From Day 1 to Month 18
Number of participants with Grade 2 to Grade 5 AEs
The grading of AEs is performed based on the Division of Acquired Immunodeficiency Syndrome (DAIDS) grading scale, here Grade 2 = moderate, Grade 3=severe, Grade 4 = potentially life-threatening, Grade 5 = death.
Time frame: From Day 1 to Month 18
Number of participants with serious adverse events (SAEs)
An SAE is defined as any untoward medical occurrence that results in death, are life threatening, require hospitalization or prolongation of hospitalization or results in disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study participant, is considered or defined as an important medical event, or abnormal pregnancy outcomes.
Time frame: From Day 1 to Month 18
Area under the concentration time curve from zero (pre-dose) to the last quantifiable concentration (post dose) (AUC[0-tlast]) for VH5356136
Time frame: From Day 1 (pre-dose) up to Month 18 post-dose
AUC(0-tlast) for VH4524184
Time frame: From Day 1 (pre-dose) up to Month 18 post-dose
Maximum plasma concentration (Cmax) for VH5356136
Time frame: From Day 1 (pre-dose) up to Month 18 post-dose
Cmax for VH4524184
Time frame: From Day 1 (pre-dose) up to Month 18 post-dose
Time to maximum observed plasma drug concentration (tmax) for VH5356136
Time frame: From Day 1 (pre-dose) up to Month 18 post-dose
Tmax for VH4524184
Time frame: From Day 1 (pre-dose) up to Month 18 post-dose
Terminal half-life (t1/2) for VH5356136
Time frame: From Day 1 (pre-dose) up to Month 18 post-dose
t1/2 for VH4524184
Time frame: From Day 1 (pre-dose) up to Month 18 post-dose
Number of participants with Grade 3 and Grade 4 laboratory abnormalities
The laboratory abnormalities are assessed using the DAIDS grading scale, where Grade 3 = severe and Grade 4 = potentially life-threatening.
Time frame: From Day 1 (pre-dose) up to Month 18 post-dose
No study locations are listed for this record.
Plan to share: Yes — Study Sponsor will assess requests from qualified researchers for anonymized individual patient-level data and related study documents. Data sharing is subject to certain criteria, conditions, and exceptions. For further information, refer to https://www.viiv-studyregister.com/documents/About_ViiV_Patient_Level_Data_Sharing_Final_28May2026.pdf
Supporting information: Study protocol, Statistical analysis plan, Informed consent form, Clinical study report
Time frame: Anonymized IPD will be made available within 6 months of publication of primary, key secondary and safety results for studies in product with approved indication(s) or asset(s) with development terminated across all indications.
Access criteria: Anonymized IPD is shared with researchers whose proposals are approved by an Independent Review Panel and after a Data Sharing Agreement is in place. Access is provided for an initial period of 12 months, but an extension may be granted, when justified, for up to 6 months.
Data sharing details ↗ · www.viiv-studyregister.com
No publications or documents are linked to this record.
This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.
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