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A Study to Evaluate Safety and Clinical Activity of GSK5926371 in Adult Participants With Relapsed or Refractory B-NHL

A Phase 1/2 Open-label, Multi-center Study to Evaluate the Safety and Clinical Activity of GSK5926371 in Adult Participants With Relapsed or Refractory B-cell Non-Hodgkin Lymphoma (B-NHL)

Status
Not yet recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07607925
Enrollment
49
Registered
2026-05-27
Start date
2026-06-12
Completion date
2029-09-24
Last updated
2026-06-18

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

Conditions

Lymphoma, Non-Hodgkin

Keywords

Relapsed or Refractory B-cell Non-Hodgkin Lymphomas (B-NHL), GSK5926371

Brief summary

The goal of this clinical trial is to learn if drug GSK5926371 works to treat a form of B-cell cancer (a type of blood cancer) that has returned or failed to respond to prior therapies in adults. The study will primarily assess the drugs safety and tolerability in participants. Additionally, it seeks to determine the clinical efficacy and pharmacokinetic (PK) properties of GSK5926371.

Interventions

GSK5926371 will be administered at different dose levels.

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Has histologically confirmed Relapsed/Refractory (R/R) B-NHL, for which systemic treatment is indicated, 1. Has measurable disease, 2. Has received at least 2 prior lines of systemic anti-neoplastic therapy, including an anti-CD20-containing combination appropriate for the indication; 3. Has documented disease relapse, progression or disease refractory to the most recent line of therapy, per Lugano criteria.: * Willing to use adequate contraception (Participant of childbearing potential \[POCBP\] only). * Is capable of giving signed informed consent * Has an Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 2. * Has adequate organ function.

Exclusion criteria

* Has a malignancy (except disease under study) that has progressed or required active treatment within the past 24 months except for basal cell or squamous cell carcinomas of the skin or in-situ carcinomas (e.g., breast, cervix, bladder) that have been resected with no evidence of metastatic disease. * Has had any major surgery within 4 weeks prior to the first dose of GSK5926371 or has not recovered from prior surgeries or complications. * Has a history of Progressive multifocal leukoencephalopathy (PML), current central nervous system (CNS) involvement by lymphoma, or a history of significant CNS disease such as uncontrolled seizures, stroke, epilepsy, CNS vasculitis, and neurodegenerative conditions. * Has an active uncontrolled infection. * Has received a prior Allogeneic stem cell transplant (allo-SCT) within 12 months prior to the first dose of GSK5926371 or has active graft-versus-host disease requiring systemic immunosuppressive therapy. * Has received a prior autologous stem cell transplant within 100 days prior to the first dose of GSK5926371. * Has received prior treatment with Chimeric antigen receptor T-cell (CAR-T) therapy within 12 weeks of first GSK5926371 administration. * Has received prior treatment with CD19- or CD20-targeting Bispecific antibody (BsAbs) within 8 weeks of the first dose of study intervention. * Has QT interval corrected (QTc) \>450 milliseconds (msec) or QTc \>480 msec for participants with bundle branch block. * Has significant cardiovascular disease such as uncontrolled arrhythmias, Class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification, ejection fraction \<=45% by any methods in the 12 months of enrollment, unstable angina or acute coronary syndrome including myocardial infarction within 6 months of enrollment.

Design outcomes

Primary

MeasureTime frame
Number of participants with dose limiting toxicities (DLTs)Up to 28 days
Number of participants with adverse events (AEs) or Serious adverse events (SAEs) by severityUp to approximately 169 weeks

Secondary

MeasureTime frameDescription
Number of participants with clinically meaningful changes in laboratory parameters, vital signs, and electrocardiogram (ECG)Up to approximately 169 weeks
Overall Response Rate (ORR)Up to approximately 169 weeksORR is defined as the percentage of participants in the ORR evaluable set with the best overall response of confirmed partial response (PR) or better per Lugano guidelines as assessed by investigator.
Maximum concentration (Cmax) of GSK5926371Up to approximately 169 weeks
Time to Cmax (Tmax) of GSK5926371Up to approximately 169 weeks
Area under the curve (AUC) of GSK5926371Up to approximately 169 weeks

Countries

Canada, Japan, United States

Contacts

CONTACTUS GSK Clinical Trials Call Center
GSKClinicalSupportHD@gsk.com877-379-3718
CONTACTEU GSK Clinical Trials Call Center
GSKClinicalSupportHD@gsk.com+44 (0) 20 89904466

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 19, 2026