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GSK4425689A

Phase 1

Malaria, Falciparum | Monoclonal antibody | Infectious Disease |GSK plc|Last Updated: Jun 12, 2026

Target and mechanism

ModalityMonoclonal antibody

Also known as GSK4425689A SC

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindCONTROLLED
Total Trials1
Total Enrollment40

FDA Designations

No designations recorded

Clinical trial landscape

GSK4425689A · 1 trial · 1 indication

Phase 1 1
NCT07646353First-in-Human Dose-escalation of GSK4425689A: Safety, Tolerability, and PK in Healthy AdultsMalaria, Falciparum
NOT YET_RECRUITING40 Analytics
PHASE1NOT YET_RECRUITING
First-in-Human Dose-escalation of GSK4425689A: Safety, Tolerability, and PK in Healthy Adults
Malaria, FalciparumUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of participants with adverse events (AEs) overall and by severity
From Day 1 up to Day 364

An AE is defined as 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. Grades are defined based on numeric criteria as follows Grade 1: mild; Grade 2: moderate; Grade 3: severe. Higher grades indicate greater severity.

Number of participants with serious adverse events (SAEs) overall and by severity
From Day -28 [informed consent form (ICF) signing] up to Day 364

An SAE is defined as any untoward medical . occurrence that results in death, is life- . threatening, requires inpatient hospitalization or extends existing hospitalization, causes . persistent or significant disability/incapacity, involves a congenital anomaly/birth defect in a participants offspring, includes an abnormal . pregnancy outcome, or occurs in any other . situation per the investigators judgement. Grades are defined based on numeric criteria as follows Grade 1: mild; Grade 2: moderate; Grade 3: severe. Higher grades indicate greater severity.

Secondary Endpoints

Bioavailability (F) of SC administration
From Day 1 until Day 197 [samples taken at pre-dose (within 1 hour (h)) and at approximately 4, 8, 12, 24, 48, 72, 96, 120, 168, 336, 504, 672, 1344, 2016, 2688, 3360 and 4032 hours post-dose
Terminal serum half-life (t1/2)
From Day 1 until Day 197 [samples taken at pre-dose (within 1h) and at approximately 4, 8, 12, 24, 48, 72, 96, 120, 168, 336, 504, 672, 1344, 2016, 2688, 3360 and 4032 hours post-dose
Clearance (CL) of IV administration and apparent clearance (CL/F) of SC administration
From Day 1 until Day 197 [samples taken at pre-dose (within 1h) and at approximately 4, 8, 12, 24, 48, 72, 96, 120, 168, 336, 504, 672, 1344, 2016, 2688, 3360 and 4032 hours post-dose
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelSEQUENTIAL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
GSK4425689A Low Dose SC GroupEXPERIMENTALParticipants receive a low dose of GSK4425689A subcutaneously (SC) on Day 1.
GSK4425689A Low Dose IV GroupEXPERIMENTALParticipants receive a low dose of GSK4425689A intravenously (IV) on Day 1.
GSK4425689A Medium Dose SC GroupEXPERIMENTALParticipants receive a medium dose of GSK4425689A SC on Day 1.
GSK4425689A Medium Dose IV GroupEXPERIMENTALParticipants receive a medium dose of GSK4425689A IV on Day 1.
GSK4425689A High Dose IV GroupEXPERIMENTALParticipants receive a high dose of GSK4425689A IV on Day 1.

Interventions

NameTypeDescription
GSK4425689A SCBIOLOGICALParticipants receive GSK4425689A SC.
GSK4425689A IVBIOLOGICALParticipants receive GSK4425689A IV.
PlaceboDRUGParticipants receive Placebo in the same volume and route as the participants receiving GSK4425689A in the same cohort.
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Eligibility Criteria

Age Range18 Years to 65 Years
SexALL
Healthy VolunteersYes

Inclusion Criteria: 1. Participants must be 18 to 65 years of age inclusive, at the time of signing the informed consent. 2. Participants must have a body weight between 50 and 100 kg, inclusive and body-mass index (BMI) within the range of 18.0 to 32.0 kg/m\^2. 3. Participants must be healthy male...

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Recent Changes (Last 90 Days)

LOWJun 12, 2026NCT07646353NEW_TRIAL: changed
LOWJun 12, 2026NCT07646353NEW_TRIAL: changed

Frequently asked questions about GSK4425689A

What is GSK4425689A used for?

GSK4425689A is an investigational monoclonal antibody being developed for the prevention or treatment of falciparum malaria, a form of malaria caused by the Plasmodium falciparum parasite. It is currently in Phase 1 clinical development and is not yet approved for any use.

Who makes GSK4425689A?

GSK4425689A is being developed by GSK plc, a global biopharmaceutical company listed on the London Stock Exchange under the ticker GSK. The company is conducting a first-in-human trial to evaluate the drug's safety, tolerability, and pharmacokinetics in healthy adults.

What phase is GSK4425689A in?

GSK4425689A is in Phase 1 clinical development. The drug is investigational and has not been approved by regulatory authorities. A first-in-human dose-escalation study is planned to assess its safety, tolerability, and pharmacokinetic profile in healthy adult volunteers.

What clinical trials is GSK4425689A in?

GSK4425689A is being studied in a single Phase 1 clinical trial registered as NCT07646353. This first-in-human study is a randomized, double-blind, controlled dose-escalation trial designed to evaluate the safety, tolerability, and pharmacokinetics of GSK4425689A in healthy adults. The trial is not yet recruiting participants.

Is GSK4425689A the same as GSK4425689A SC?

Yes, GSK4425689A SC is another name for GSK4425689A. The SC designation likely refers to the subcutaneous route of administration, but both names refer to the same investigational monoclonal antibody being developed by GSK plc for falciparum malaria.