jRCT ロゴ

臨床研究等提出・公開システム

Top

Japanese

Aug. 20, 2024

Nov. 14, 2025

jRCT2031240279

A Phase I Clinical Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Clinical Activity of GSK5733584 for Injection in Subjects With Advanced Solid Tumors

A Phase I Clinical Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Clinical Activity of GSK5733584 for Injection in Subjects With Advanced Solid Tumors

Ishibashi Hideyasu

GlaxoSmithKline K.K.

Akasaka Intercity AIR, 1-8-1 Akasaka, Minato-ku, Tokyo, Japan

+81-120-561-007

jp.gskjrct@gsk.com

Ishibashi Hideyasu

GlaxoSmithKline K.K.

Akasaka Intercity AIR, 1-8-1 Akasaka, Minato-ku, Tokyo, Japan

+81-120-561-007

jp.gskjrct@gsk.com

Recruiting

Sept. 17, 2024

10

Interventional

single arm study

open(masking not used)

uncontrolled control

single assignment

treatment purpose

-Males or females aged 18 years or older (>= 18 years).
-Participants with pathologically confirmed advanced solid tumor (who have failed or are intolerant to standard of care).
-Participants have at least one target lesion as assessed per the RECIST 1.1
-Tumor tissue from a newly obtained biopsy or archival tumor tissue is required for retrospective detection of B7
homolog 4 (B7-H4) expression by Immunohistochemistry (IHC) in central laboratory and other biomarker analysis. Tissue from a newly obtained biopsy is preferred. If a newly obtained biopsy is not feasible, archival tumor tissue obtained from the most recent sample prior to the first dose of study drug is acceptable.
- Eastern Cooperative Oncology Group Performance Status (ECOG PS) score of 0 to 2 and no deterioration within 2 weeks before the first dose.
- Have a life expectancy of at least 12 weeks.

- Endometrial cancer cohort
1.Histologically documented, advanced (metastatic and/or unresectable) or recurrent endometrial cancer.
2.Must have received or are intolerant to 1 but no more than 3 lines of prior systemic therapy.
Maintenance therapy will be considered part of the preceding line of therapy (i.e., not counted independently).
3.Must have had prior platinum and PD(L)-1 inhibitor (in same regimen or in separate regimens), if considered a candidate for this regimen and the regimen is locally available.
4.All epithelial histologies are permitted including carcinosarcoma.

- Ovarian cancer cohort
1.Histologically documented, advanced (metastatic and/or unresectable) high-grade serous/endometrioid ovarian, primary peritoneal, or fallopian tube cancer.
2.Must have received or are intolerant to 1 but no more than 3 lines of prior systemic therapy.
3.Platinum-resistant disease, defined as progression or relapse within 6 months after the completion of platinum-based therapy.
4.Must have had prior bevacizumab if the participant was considered a candidate for this regimen and the regimen is locally available.
5.Participants with known FR-alpha expressing tumors must have received mirvetuximab soravtasine if the participants was considered a candidate for this regimen and the regimen is locally available.
6.Participants with known BRCA mutated tumors should have received a PARP inhibitor if the participant was considered a candidate for this regimen and the regimen is locally available.

- Have received any of B7-H4-targeted therapies.
- Have received any of cytotoxic chemotherapy drugs, anti-tumor traditional Chinese medicines or other anti-tumor drugs within 28 days prior to the first dose of study drug; or need to continue these drugs during the study.
- Have 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 treatment.
- Presence of pleural/abdominal effusion/ascites requiring clinical intervention; presence of pericardial effusion
- Major surgery within 4 weeks prior to the first dose of study treatment.
- Evidence of brain metastasis unless asymptomatic.
- Has inadequate bone marrow reserve or hepatic/renal functions.
- Mean Fridericia-corrected QT interval (QTcF) > 470 millisecond (msec) on resting ECG.
- Evidence of current clinically significant arrhythmias or ECG abnormalities
- Risk factors of prolonged QTc or arrhythmia events,
- Left ventricular ejection fraction (LVEF) < 50%.
- Have severe, uncontrolled or active cardiovascular disorders, serious or poorly controlled hypertension, clinically significant bleeding symptoms or serious arteriovenous thromboembolic events
- Any evidence of current Interstitial lung disease (ILD) or pneumonitis or a prior history of ILD or pneumonitis requiring high-dose systemic glucocorticoids.
- Have received prior therapy with topoisomerase inhibitors or topoisomerase inhibitor Antibody-drug conjugate (ADCs)
- Endometrial cancer: Mesenchymal tumors of the uterus (uterine sarcomas) not permitted.

- Ovarian cancer:
1. Primary platinum refractory disease defined as those who have progressed on or within 12 weeks of last dose of first line platinum therapy not permitted.
2. Non-epithelial carcinoma, clear-cell, mucinous, germ-cell, low-grade serous, or low-grade endometrioid carcinoma not permitted.

18age old over
No limit

Both

solid tumors, endometrial cancer, ovarian cancer

Drug: GSK5733584
GSK5733584 will be administered intravenously.

Part 1: Number of participants with dose limiting toxicity (DLT)
Part 2: Objective Response Rate (ORR)

PK parameter (Cmax, Tmax, AUC), efficacy (ORR, DCR, DoR, PFS, OS), safety (AEs, SAEs), frequency and titers of ADA, etc.

GlaxoSmithKline K.K.
to be updated after the approval of IRB
to be updated after the approval of IRB, Tokyo

Not approval

No

NCT06431594
ClinicalTrials.gov

United States/Canada/Australia

History of Changes

No Publication date
5 Nov. 14, 2025 (this page) Changes
4 May. 21, 2025 Detail Changes
3 Jan. 24, 2025 Detail Changes
2 Oct. 21, 2024 Detail Changes
1 Aug. 20, 2024 Detail