NCT07734116 ONO-4538HSC Sarcoma Clinical Landscape Report 2026: Design, Endpoints, Sponsor and Readout Outlook
Turn a newly registered trial into a decision-ready clinical landscape. This report examines NCT07734116 using PatSnap Clinical Trials MCP for protocol design and endpoint evidence, with Drug & Asset MCP and Company & Deal Intelligence MCP used as the companion asset and sponsor enrichment workflow. Explore PatSnap MCP Servers to reproduce the research sequence inside an AI workflow.
MCP evidence snapshot: 5 August 2026. Trial records, recruitment status and projected dates can change after the snapshot and should be rechecked before operational decisions.
Why NCT07734116 is a hot trial to watch
Sarcoma is being segmented by mechanism, treatment setting, geography and endpoint architecture. NCT07734116 is notable because it evaluates ONO-4538HSC in a Phase 1/2 design sponsored by Ono Pharmaceutical Co., Ltd.. The main development question is whether the protocol can translate its rationale into a clinically interpretable and operationally credible readout.
Trial landscape snapshot
| Field | Indexed detail |
|---|---|
| Registration | NCT07734116 |
| Official title | A Study of ONO-4538HSC in Pediatric Patients With Malignant Solid Tumors and in Patients With Epithelioid Sarcoma. |
| Phase / status | Phase 1/2 / Not yet recruiting |
| Intervention | ONO-4538HSC |
| Sponsor | Ono Pharmaceutical Co., Ltd. |
| Geography | Japan |
| Enrollment | [object Object] |
| Primary endpoint | Adverse events meeting protocol-defined criteria for a DLT |
| Endpoint time frame | 28 days |
| Primary completion / readout proxy | [object Object] |
Protocol design and endpoint interpretation
This is a multicenter, open-label, uncontrolled Phase I/II study to evaluate the efficacy, safety, and pharmacokinetics of ONO-4538HSC in pediatric patients with malignant solid tumors and in patients with epithelioid sarcoma, and to evaluate the tolerability in pediatric patients. The objective of this study is to explore the tolerability, safety, efficacy, and pharmacokinetics of ONO-4538HSC in patients with pediatric malignant solid tumors. The other objective is to exploratively investigate the efficacy and safety of ONO-4538HSC in patients with epithelioid sarcoma.
Allocation is N/A, masking is None (Open Label), and the intervention model is Single Group Assignment. Planned enrollment of [object Object] participants across Japan shapes statistical precision, execution risk and external validity. Interpretation should account for baseline risk, prior therapy, assessment schedule, missing-data handling and clinical relevance—not only statistical significance.
- Adverse events meeting protocol-defined criteria for a DLT (28 days) — Cohort of Patients with Pediatric Malignant Solid Tumor
- Serious adverse events (UP to 100 days after the last dose) — Cohort of Patients with Pediatric Malignant Solid Tumor
- Adverse events (UP to 100 days after the last dose) — Cohort of Patients with Pediatric Malignant Solid Tumor
- Response rate (central assessment) (Through study completion, an average of 6 months) — Cohort of Epithelioid Sarcoma
Readout outlook and evidence gap
The current protocol points to [object Object] as the best available readout proxy. Because this is an active or newly posted study, a trial-specific result citation is not included until a normalized clinical-trial-result record becomes available. That gap is itself operationally important: teams should monitor first result indexing, conference abstracts, protocol amendments and changes to the primary-completion date.
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Asset and sponsor context
Drug & Asset MCP profile: ONO-4538HSC is indexed as No normalized modality returned, with target No normalized target returned, mechanism No normalized mechanism returned, and global highest development status No normalized global status returned.
Company & Deal Intelligence MCP profile: Ono Pharmaceutical Co., Ltd. is resolved to a normalized organization record in Japan. The organization workflow adds identity, location, portfolio and partnering context where available.
The sponsor profile matters because scientific rationale alone does not determine development value. Manufacturing readiness, portfolio fit, geographic reach, partnering capacity and the ability to fund confirmatory development can determine whether a positive signal becomes a competitive asset.
White space around this program
- Sharper patient selection: prospective biomarker or phenotype definitions that identify who is most likely to benefit.
- Clinically interpretable endpoints: outcomes connecting activity with function, symptoms, survival or treatment burden.
- Comparator relevance: evidence against the most decision-relevant contemporary standard of care.
- Broader external validity: evidence across additional geographies, demographic groups and real-world settings.
- Operational differentiation: a development path that closes the readout gap without sacrificing safety or durability.
What to monitor next
Monitor recruitment, enrollment changes, protocol amendments, endpoint hierarchy, primary-completion timing, first result indexing, asset ownership and sponsor partnerships. A change in endpoint, population or ownership can alter the probability of success before a headline data release.
Bottom line
NCT07734116 provides a focused lens on Sarcoma development. Its value will be determined by whether ONO-4538HSC can convert the current Phase 1/2 design into evidence that is clinically meaningful, operationally credible and differentiated from competing programs.
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