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GSK4527363

Phase 1

Systemic Lupus Erythematosus | Small molecule | Immunology |GSK plc|Last Updated: Apr 29, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDBiomarker
Total Trials1
Total Enrollment142
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06576271A Study of GSK4527363 in Healthy Participants, Systemic Lupus Erythematosus (SLE) Participants, Healthy Chinese, and Japanese Participants and CTD-ILD ParticipantsPHASE1 RECRUITING 142Sep 2, 2024Jan 11, 2028Apr 29, 202627 United States, Argentina +4
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Study Endpoints
Primary Endpoints
Parts A and C: Number of Participants with Non-serious Adverse Events and Serious Adverse Events
Up to Week 52
Parts B and D: Number of Participants with Non-serious Adverse Events and Serious Adverse Events
Up to Week 68
Parts A and C: Number of Participants with Clinically Significant Changes in Physical Examination, Laboratory Parameters, Vital Signs, and 12 lead Electrocardiogram (ECG) Findings
Up to Week 52
Parts B and D: Number of Participants with Clinically Significant Changes in Physical Examination, Laboratory Parameters, Vital Signs, and 12 lead Electrocardiogram (ECG) Findings
Up to Week 68
Parts A and C: Number of Participants with Clinically Significant Changes in Columbia-Suicide Severity Rating Scale (C-SSRS)
Up to Week 52

The C-SSRS is an assessment tool that evaluates suicidal ideation and behavior. A suicidal ideation score will be calculated based on the maximum suicidal ideation category ranging from 1 to 5. Higher score indicates more suicidal ideation. A clinically important change in the C-SSRS is defined as a total score \>0.

Parts B, and D: Number of Participants with Clinically Significant Changes in Columbia-Suicide Severity Rating Scale (C-SSRS)
Up to Week 68

The C-SSRS is an assessment tool that evaluates suicidal ideation and behavior. A suicidal ideation score will be calculated based on the maximum suicidal ideation category ranging from 1 to 5. Higher score indicates more suicidal ideation. A clinically important change in the C-SSRS is defined as a total score \>0.

Secondary Endpoints
Parts A and C: Area Under the Concentration-time Curve to the Last Quantifiable Concentration (AUC[0-t]) of GSK4527363
Up to Week 52
Parts A and C: Area Under the Concentration-time Curve to Infinity (AUC[0-inf]) of GSK4527363
Up to Week 52
Parts A and C: Maximum Plasma Concentration (Cmax) of GSK4527363
Up to Week 52
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Part A: Healthy participants receiving GSK4527363EXPERIMENTAL -
Part A: Healthy participants receiving placebo matching GSK4527363PLACEBO_COMPARATOR -
Part A: Healthy participants receiving belimumabEXPERIMENTAL -
Part B: Participants with SLE receiving GSK4527363EXPERIMENTAL -
Part B: Participants with SLE receiving belimumabEXPERIMENTAL -
Part C: Healthy Japanese participants receiving GSK4527363EXPERIMENTAL -
Part C: Healthy Japanese participants receiving placebo matching GSK4527363PLACEBO_COMPARATOR -
Part C: Healthy Chinese participants receiving GSK4527363EXPERIMENTAL -
Part C: Healthy Chinese participants receiving placebo matching GSK4527363PLACEBO_COMPARATOR -
Part D: Participants with CTD-ILD receiving GSK4527363EXPERIMENTAL -
Interventions
NameTypeDescription
GSK4527363DRUGGSK4527363 will be administered to participants.
Placebo matching GSK4527363DRUGPlacebo matching GSK4527363 will be administered to participants.
BelimumabDRUGBelimumab will be administered to participants.
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Eligibility Criteria
Age Range18 Years — 65 Years
SexALL
Healthy VolunteersYes
Study Sites27

Inclusion criteria: For Part A and Part C (Healthy Participants): * Participant must be 18 to 55 years of age inclusive, at the time of signing the informed consent form * Participants who are overtly healthy as determined by medical evaluation including medical history, physical examination, labo...

Countries:United StatesArgentinaBrazilPolandSpainUnited Kingdom
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT06576271primaryCompletionDate: changed
LOWMay 24, 2026NCT06576271studyFirstPostDate: changed