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First-in-human Study of OT-A201 in Patients With Selected Hematological Malignancies and Solid Tumors

A First-in-human, Dose-escalation Followed by Expansion Study to Assess the Safety and Preliminary Efficacy of a Bispecific Antibody OT-A201 as Monotherapy and in Combination Therapy in Patients With Selected Hematological Malignancies and Solid Tumors

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05828459
Enrollment
150
Registered
2023-04-25
Start date
2023-07-10
Completion date
2027-07-31
Last updated
2025-03-20

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

Conditions

Hematological Malignancy, Solid Tumor

Brief summary

This phase 1 study is aimed at establishing the safety basis of OT-A201 in the treatment of hematological malignancies and solid tumors. In the dose of escalation part it is to characterize the overall safety and tolerability profile and determine the recommended dose(s) of OT-A201 as monotherapy, and in various combination regimens. Preliminary information about anti-cancer activity will be further explored in the expansion part of the study.

Interventions

DRUGOT-A201

OT-A201 IV infusion qw or q2w

DRUGIMids

Combination regimen for hematological malignancy Lenalidomide: 25 mg on Days 1 to 21 of each 28-day cycle; or Pomalidomide: 4 mg on Days 1 to 21 of each 28-day cycle

DRUGBevacizumab

Combination regimen for solid tumor Bevacizumab: 10 mg/m² q2w

DRUGPaclitaxel

Combination regimen for solid tumor Paclitaxel: 175 mg/m² q3w

DRUGTBD Compound

Combination regimen for hematological malignancy

Sponsors

Onward Therapeutics
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Monotherapy dose escalation followed by dose confirmation of combination regimens. Further expansion of each groups.

Eligibility

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

Inclusion criteria

Main Inclusion Criteria: * Histologically or cytologically confirmed relapsed/refractory hematological malignancy or advanced/metastatic solid cancer * Measurable disease * Have had all available therapeutic standards for their disease * Willingness to undergo baseline biopsy/bone marrow aspiration in case biopsy was not collected after completion of the most recent prior therapy * ECOG performance status ≤ 1 * Life expectancy \> 3 months as assessed by the investigator * Acceptable clinical lab results Main

Exclusion criteria

* Systemic steroids at a daily dose of \> 10 mg of prednisone or equivalent within 28 days before study treatment. Transient use of steroids for other medical condition may be allowed * Ongoing immune-related adverse events irAEs and or AEs ≥ grade 2 from previous therapies not resolved except vitiligo, stable neuropathy up to grade 2, hair loss, and stable endocrinopathies with substitutive hormone therapy * Within 4 weeks of major surgery * Documented history of active autoimmune disorder requiring systemic immunosuppressive therapy within the last 12 months * Prior solid organ transplant * Primary or secondary immune deficiency * Active and uncontrolled infection requiring intravenous antibiotic or antiviral treatment * Seropositive (except after vaccination or confirmed cure for hepatitis) for human immunodeficiency virus (HIV), hepatitis B virus (HBV), or hepatitis C virus (HCV) * Clinically significant disease

Design outcomes

Primary

MeasureTime frameDescription
Maximum tolerated dose(s) (MTD) and recommended dose(s) of OT-A20128 daysEvaluate dose-limiting toxicity (DLT) during the DLT observation period
Safety profile of OT-A2016 monthsIncidence, severity, and relationship of Treatment Emergent Adverse Events (TEAEs), Serious Adverse Events (SAEs), TEAEs leading to discontinuation of study treatment; and clinically significant findings on clinical laboratory tests, vital signs, ECGs, and physical examinations

Countries

France

Contacts

Primary ContactBruno Piccolella
bruno.piccolella@onward-therapeutics.com+33 6 12 97 73 68
Backup ContactErica Wang
erica.wang@onward-therapeutics.com+886 921 865 855

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026