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First Time in Human (FTIH) Study to Investigate the Safety and Preliminary Activity of GSK5533524 Alone or in Combination in Adult Participants With Advanced Solid Tumors

A Phase 1, Open-label, Multicenter Study of GSK5533524 Alone or in Combination With Other Anti-cancer Agents, in Adult Participants With Selected Advanced Solid Tumors

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07438782
Enrollment
97
Registered
2026-02-27
Start date
2026-03-23
Completion date
2029-02-06
Last updated
2026-07-21

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

Conditions

Neoplasms

Keywords

Solid Tumors, GSK5533524

Brief summary

The purpose of this study is to investigate a new drug GSK5533524 in adults with certain advanced cancers to find a safe dose and learn how well people tolerate it, so researchers can choose the best dose for the next stage of testing. The study will also check whether the drug can shrink tumours or slow cancer growth, monitor how the body absorbs and breaks down the drug, and look for any immune reactions that the body might develop against the treatment.

Interventions

DRUGGSK5533524

GSK5533524 will be administered.

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Is at least 18 years of age or the legal age of consent * Has histologically or cytologically confirmed advanced/metastatic solid tumor that is refractory to standard therapy, for which no standard treatment is available, or who is intolerant to established standard of care therapies. * Has documented disease progression based on radiologic imaging, during or after most recent line of treatment. * Has at least one target lesion per RECIST 1.1 (participants in Part 1a backfill and Part 1b). * Has an Eastern Cooperative Oncology Group performance status of 0 or 1 and no deterioration in the 2 weeks before enrollment. * Has adequate organ function.

Exclusion criteria

* Has a history of clinically significant or uncontrolled cardiac disease, acute myocardial infarction, congestive heart failure or clinically significant arrhythmia not controlled by Standard of care therapy. * Presence of pleural/abdominal effusion/ascites requiring clinical intervention; presence of pericardial effusion. * Has untreated brain or central nervous system metastases or metastases that have progressed * Has a Grade ≥2 corneal epithelial condition. * Has any active renal condition * Has a history of autoimmune disease that has required systemic treatments in the 2 years prior to screening. * Has ongoing adverse reaction(s) from prior therapy that has(have) not recovered to ≤Grade 1 or to the baseline status preceding prior therapy. * Has a history of (non-infectious) interstitial lung disease (ILD)/pneumonitis, or current ILD/pneumonitis. * Has a lung-specific intercurrent clinically significant illness * Has FEV1 \<50% predicted * Has chronic enteritis or inflammatory bowel disease or any history of clinically significant bleeding of gastrointestinal tract or clinically significant obstruction and/or perforation and/or fistulae of GI tract. * Has a known hypersensitivity to any component of GSK5533524 or its excipients. * Has history of severe allergies, or severe infusion related reactions, or idiosyncrasy to recombinant humanized proteins. * Has received any cytotoxic chemotherapy drugs, or other anti-tumor drugs within 28 days prior to the first dose of study drug. * Has received locoregional radiation therapy within 2 weeks prior to the first dose of study drug; more than 30% of bone marrow irradiation or wide-field radiation therapy within 4 weeks prior to the first dose of study intervention. * Has received immunosuppressive agents or required long-term glucocorticoid therapy within 30 days prior to first dose of study treatment. * The use of concomitant medications known to prolong the QT/QTc interval or potentially cause torsades de pointes. * Has corrected QT interval by Fridericia formula (QTcF) \>470 msec or QTcF \>480 msec for participants with bundle branch block. * Has a left ventricular ejection fraction (LVEF) \< 50%. * Has risk factors for prolonged QT/QTc or TdP, such as heart failure, refractory hypokalemia, congenital long QT syndrome, family history of long QT syndrome, or unexplained sudden death of any direct relative under 40 years old.

Design outcomes

Primary

MeasureTime frameDescription
Part 1a: Number of participants with dose limiting toxicities (DLTs) per dose levelUp to 21 days
Part 1a: Number of participants with adverse events (AEs), serious adverse events (SAEs), by Severity per dose levelUp to approximately 34 months
Part 1b: Objective Response Rate (ORR)Up to approximately 27 monthsORR is defined as the proportion of participants with a best overall response (BOR) of complete response (CR) or partial response (PR) as assessed by the investigator according to Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST 1.1).

Secondary

MeasureTime frameDescription
Part 1a & 1b: Number of participants with adverse events (AEs), serious adverse events (SAEs), Treatment-Emergent AEs (TEAEs) by severity, Adverse Events of Special Interest (AESIs), and AEs leading to dose modifications and treatment discontinuationUp to approximately 34 months
Part 1a: Objective Response Rate (ORR)Up to approximately 27 monthsORR is the proportion of participants with a BOR of CR or PR as assessed by the investigator according to RECIST 1.1.
Part 1a & 1b: Duration of Response (DoR)Up to approximately 27 monthsDoR is evaluated in participants who achieve a CR or PR, based on investigator assessment per RECIST 1.1.
Part 1a & 1b: Pharmacokinetic (PK) Concentrations of GSK5533524 and its componentsUp to approximately 27 months
Part 1a & 1b: Number of participants with Anti-drug antibodies (ADA) against GSK5533524Up to approximately 27 months
Part 1a & 1b: Titers of ADA against GSK5533524Up to approximately 27 months

Countries

Canada, Finland, Japan, Spain, United Kingdom, 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: Jul 22, 2026