Skip to content

A phase I study to evaluate the safety and pharmacokinetics of ONX 0801 in advanced solid tumours

A phase I, open-label, dose-finding study to evaluate the safety and pharmacokinetics of ONX 0801, a novel alpha-folate receptor-mediated thymidylate synthase inhibitor, in patients with advanced solid tumours

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN79302332
Enrollment
60
Registered
2009-06-30
Start date
2009-09-30
Completion date
Unknown
Last updated
2018-01-08

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

Conditions

Advanced solid tumours Cancer Malignant neoplasm of other and ill-defined sites

Interventions

Cohorts of 3 to 6 patients will receive ONX 0801 at escalating doses until a maximum tolerated dose (MTD) is determined. Each patient will receive a 3-hour intravenous (IV) infusion of ONX 0801 weekly

Sponsors

Onyx Pharmaceuticals (USA)
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Histologically or cytologically proven solid tumours, including lymphomas. Patients must have disease which has failed standard therapy or for which no standard curative therapy exists. 2. Greater than or equal to 18 years of age, either sex 3. Eastern Cooperative Oncology Group performance status (ECOG PS) less than or equal to 2 4. Life expectancy greater than or equal to 12 weeks 5. Measurable (as defined by Response Evaluation Criteria in Solid Tumours [RECIST version 1.1]) or evaluable (based on radiological assessments or tumour markers) disease 6. Recovered (i.e., to National Cancer Institute [NCI] Common Terminology Criteria for Adverse Events [CTCAE] Version 3.0 Grade less than or equal to 1) from all toxicities associated with previous chemotherapy or radiotherapy (exception: patients may enter with continuing alopecia irrespective of CTCAE grade). The following intervals between starting last treatment and starting ONX 0801 must elapse: 6.1. Chemotherapy (see exception below): at least 4 weeks 6.2. Mitomycin C or a nitrosourea: at least 6 weeks 6.3. Targeted therapy: at least 2 weeks or 2 half-lives, whichever is longer 6.4. Biologics: at least 4 weeks 6.5. Radiotherapy: at least 4 weeks 7. Normal organ function 8. Normal electrocardiogram (ECG) 9. Archival tumour tissue available

Exclusion criteria

Exclusion criteria: 1. Pregnant women, women who are lactating, or women of childbearing potential who are not currently on effective means of birth control 2. History of QT/QTc prolongation, clinically significant ventricular tachycardia, ventricular fibrillation, heart block, myocardial infarction within 1 year, congestive heart failure New York Heart Association Class III or IV, unstable angina, angina within 6 months, or other evidence of clinically significant coronary artery disease 3. Active, ongoing infection, including viral hepatitis 4. Undergone major surgery within the last 4 weeks 5. Organ transplant recipients 6. New brain metastasis. Patients with treated (surgically excised or irradiated) and stable brain metastases are eligible as long as the treatment was at least 4 weeks prior to initiation of study drug and baseline brain computed tomography (CT) with contrast or magnetic resonance imaging (MRI) within 2 weeks of initiation of study drug is negative for new brain metastases. 7. Patients who have been on other experimental clinical trials of investigational agents within the last 28 days

Design outcomes

Primary

MeasureTime frame
1. To determine the maximum tolerated dose (MTD) and/or recommended phase II dose (RP2D) of ONX 0801 based on dose limiting toxicities (DLTs) occurring within cycle 1 2. To characterise the safety profile of ONX 0801

Secondary

MeasureTime frame
1. Pharmacokinetics (PK) of ONX 0801: Blood samples will be collected according to the following schedule: 1.1. Cycle 1, Day 1: predose and 30 minutes and 1, 2, 3, 3.5, 4, 6, 8, 12, 24 (Day 2), 48 (Day 3), and 72 (Day 4) hours following the start of the infusion 1.2. Cycle 1, Days 8 and 15: predose and 3 hours following the start of the infusion 1.3. Cycle 2, Days 1 and 8: predose and 3 hours following the start of the infusion 2. Pharmacodynamics of ONX 0801: 2.1. Blood samples will be collected according to the following schedule: predose and 4, 8, 24 (Day 2), 48 (Day 3), and 72 (Day 4) hours following the start of infusion in Cycle 1, Day 1 and approximately every 6 - 9 weeks during the course of the study 2.2. Tissue samples may be collected predose and up to 72 hours following the start of the infusion in Cycle 1, Day 1 2.3. 18FLT-PET scans may be performed predose and between 16 to 48 hours following the start of the infusion in Cycle 1, Day 1 3. Identifying a biologically effective dose (BED) equal to or lower than the MTD and/or RP2D of ONX 0801 4. Assess the preliminary antitumour activity of ONX 0801

Countries

United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026