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OncoMatch/Clinical Trials/NCT06650514

A Phase 2 Pilot Study to Evaluate the Safety and the Anti-Tumour Activity of the Myc Inhibitor OMO-103 Administered Intravenously in Patients With Advanced High-Grade Osteosarcoma

Is NCT06650514 recruiting? Yes, currently enrolling (May 2026). This Phase 2 trial studies OMO-103 for osteosarcoma.

Phase 2RecruitingVall d'Hebron Institute of OncologyNCT06650514Data as of May 2026

Treatment: OMO-103This is an open-label, unicentric, single-arm Phase 2 pilot study to serve as a proof-of-concept of OMO-103 safety and activity in patients with advanced high-grade osteosarcoma. Patients will be treated at the RP2D (6.5 mg/kg as a weekly IV infusion) of OMO-103 to estimate anti-tumour activity and further characterise the safety, tolerability, PK, and PD of OMO-103 in advanced high-grade osteosarcoma patients. Ten (10) evaluable patients will be enrolled. At least 30% of patients will be \<18 years old. The first three patients 12-15 years of age will undergo additional safety monitoring. Patients will be treated until progression by RECIST v1.1 or intolerable toxicity.

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Extracted eligibility criteria

Cancer type

Osteosarcoma

Disease stage

Grade: high-grade

advanced high-grade osteosarcoma not suitable for local treatments with curative intent

Performance status

ECOG 0–2(Ambulatory, capable of self-care)

Prior therapy

Max 2 prior lines
Min 1 prior line

Must have received: chemotherapy (cisplatin, anthracycline) — standard

Confirmed disease progression by radiological report to at least one line of standard chemotherapy containing cisplatin and anthracycline

Cannot have received: systemic anti-cancer therapy

Treatment with systemic anti-cancer therapy within three weeks prior to study drug administration for chemotherapy and 5 half-lives for targeted therapies

Cannot have received: radiation therapy

Exception: Localised palliative radiotherapy to nontarget lesions is allowed

Radiation therapy within four weeks prior to study entry. Localised palliative radiotherapy to nontarget lesions is allowed

Lab requirements

Blood counts

Adequate organ function

Kidney function

Adequate organ function

Liver function

Adequate organ function

Adequate organ function

Structured fields extracted by AI. May contain errors — verify against the official protocol.

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