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A Phase 1/2a Study Evaluating Allocetra-OTS on its own or together with Anti-PD-1 Therapy for the Treatment of Advanced Solid Tumor Malignancy

A Phase 1/2a Study Evaluating Allocetra-OTS as Monotherapy or in Combination with Anti-PD-1 Therapy for the Treatment of Advanced Solid Tumor Malignancy

Status
Active, not recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2022-003063-21-GR
Enrollment
24
Registered
2023-02-14
Start date
2023-02-14
Completion date
Unknown
Last updated
2023-09-11

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

Conditions

Advanced Solid Tumor Malignancy MedDRA version: 21.1 Level: LLT Classification code 10065147 Term: Malignant solid tumor System Organ Class: 100000004864

Interventions

Product Name: Allocetra-OTS Pharmaceutical Form: Suspension for injection INN or Proposed INN: Allocetra-OTS Other descriptive name: Allogeneic mononuclear cells induced to an apoptotic state Concen

Sponsors

Enlivex Therapeutics RDO, Ltd.
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Patients must have histologically or cytologically confirmed locally advanced, unresectable or metastatic solid tumors, that have relapsed or have been refractory to available approved therapies specific to their cancer type, based upon standard clinical practice guidelines, with agents that are approved and available to them in their country. Patients who are either not eligible for or have specifically declined additional standard of care systemic therapy may also be enrolled. Patients with peritoneal carcinomatosis with no or minimal extraperitoneal disease (as per Investigator discretion) can be eligible for treatment with IP Allocetra-OTS if an appropriate IP catheter (e.g. PleurX) or port is in place or can be placed. 2. Patients must have measurable disease per Response Evaluation Criteria in Solid Tumors (RECIST v1.1), assessed within 28 days prior to study treatment. 3. Age =18 years old at the time of signing the ICF. 4. Patients who have had major surgery must be fully recovered and a recovery period of =4 weeks has elapsed prior to enrolling in the study. 5. Eastern Cooperative Oncology Group (ECOG) performance status =1. 6. Adequate renal function, defined as a serum creatinine =1.5×upper limit of normal (ULN), or measured creatinine clearance =50 mL/min/1.73m2 (or estimated creatinine clearance =50 mL/min [Cockcroft-Gault]). 7. Adequate hepatic function, defined as aspartate transaminase (AST) and alanine transaminase (ALT) levels =3×ULN and total bilirubin <1.5×ULN, in the absence of cancer within the liver or a known diagnosis of Gilbert’s syndrome. Bilirubin =5 mg/dL will be permitted in patients with Gilbert’s syndrome, if direct bilirubin is =1.0 mg/dL. AST and ALT =5×ULN and total bilirubin =3×ULN will be permitted in the setting of primary or metastatic liver tumors. 8. Adequate bone marrow function, defined as absolute neutrophil count (ANC) =1,200/mm3 (=1.2×10 6/L), platelet count =75,000/mm3 (=75×10 6 /L) without transfusions for at least one week, and hemoglobin =8 g/dL without transfusions for at least one week. 9. International normalized ratio (INR) or activated partial thromboplastin time (aPTT) <1.5×ULN unless the patient is receiving anticoagulant therapy. Patients on anticoagulant therapy should have a prothrombin time (PT) or PTT within therapeutic range for the specific intended use and no history of severe hemorrhage. 10. Contraceptive use by women or men should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies: a. Female patients must have a negative serum pregnancy test at screening. b. Female patients: women of childbearing potential must use a highly effective form of contraception from the screening visit until at least 4 weeks after the final dose of Allocetra-OTS and at least five months after the final dose of nivolumab. c. Male patients: men must be sterile (biologically or surgically) or use a highly effective method of contraception from the screening visit until at least 4 weeks after the final dose of Allocetra-OTS and at least seven months after the final dose of nivolumab. 11. Ability of the patient to understand, and willingness to provide informed consent as described in this study protocol, which includes compliance with the requirements and restrictions listed in the ICF and in this protocol. 12. To the discretion of the investigator, ability to comply with all study procedures, availability for the

Exclusion criteria

Exclusion criteria: 1. Primary central nervous system (CNS) malignancy or CNS involvement, unless asymptomatic, previously treated, and stable clinically and radiographically without steroids during the last three months. 2. Squamous cell carcinoma of the skin or melanoma. Metastatic uveal melanoma is allowed. 3. Receipt of any biological therapy (immunotherapy and monoclonal antibodies), hormonal therapy, or chemotherapy within four weeks prior to initiation of study treatment (or five half-lives, whichever is shorter). Receipt of any radiation (except palliative radiation) within two weeks prior to study treatment. 4. Participation in other concurrent interventional clinical trials or have been treated with any investigational agent within 30 days prior to starting study treatment, unless approved by the Sponsor. 5. Lack of recovery of prior AEs to Grade 1 or resolution, according to the National Cancer Institute (NCI) common terminology criteria for adverse events (CTCAE v5.0), except alopecia (any grade) or Grade 2 neuropathy due to therapy administered prior to the initiation of study drug dosing. 6. Clinically significant, active infection requiring systemic antibacterial, antifungal or antiviral therapy with 7 days of study enrollment. 7. Patients with a history of human immunodeficiency virus (HIV), hepatitis B virus (HBV), hepatitis C virus (HCV) or acute hepatitis A infection will be excluded from trial participation given the unknown impact of ongoing infection with these agents on the immune regulatory function of AllocetraOTS administered alone or in combination with nivolumab in patients with cancer. Patients with a history of hepatitis C therapy will be allowed if patients have been treated with approved antiviral therapy, and no residual virus is detectable currently (and at least 12 weeks since completion of antiviral therapy). 8. Concomitant conditions (autoimmune or inflammatory diseases) requiring systemic immunosuppression or chronic (daily or almost daily for = 1 month prior) use of steroids at a dose equivalent to more than 10 mg prednisone. 9. Patient received any live vaccines within 30 days prior to enrollment. 10. Clinically significant cardiovascular disease, including stroke or myocardial infarction within six months prior to first infusion of Allocetra-OTS; or the presence of unstable angina, severe myocardial insufficiency, severe arrhythmias or congestive heart failure of New York Heart Association Class III or higher. 11. Clinically significant pulmonary conditions such as sarcoidosis, silicosis, idiopathic pulmonary fibrosis, hypersensitivity pneumonitis or severely impaired pulmonary function. History of severe acute respiratory syndrome Coronavirus 2 (SARS-CoV-2) infection with residual clinically significant residual pulmonary compromise in the judgement of the Investigator. 12. Known hypersensitivity to any component of study treatment or excipients. 13. Known history of transfusion reactions, hemolytic anemia, or repetitive allergic reaction to cellular therapies. 14. Uncontrolled intercurrent illness or any medical, psychiatric, social or substance abuse condition, that in the opinion of the Investigator may be of greater safety risk or would limit compliance with study requirements or interpretation of the results. 15. Women who are pregnant or breastfeeding. 16. Patients who have previously received Allocetra-OTS. 17. Any known additional malignancy (with exception of non-melanoma skin cancer, in-situ breas

Design outcomes

Primary

MeasureTime frame
Main Objective: 1. To assess the safety and to identify the MTD of Allocetra-OTS as monotherapy when repeatedly administered via IV or IP infusion in patients with advanced solid tumor malignancy (applicable to Stage 1). 2. To assess the safety and to identify the MTD of Allocetra-OTS administered via IV or IP infusion in combination with nivolumab in patients with advanced solid tumor malignancy (applicable to Stage 2).;Secondary Objective: 1. To assess preliminary efficacy parameters following IV or IP administration of Allocetra-OTS as monotherapy in patients with advanced solid tumor malignancy (applicable to Stage 1). 2. To assess preliminary efficacy parameters following IV or IP administration of Allocetra-OTS in combination with nivolumab in patients with advanced solid tumor malignancy (applicable to Stage 2);Primary end point(s): 1. Stage 1: Characterize the safety of Allocetra-OTS from the first infusion of Allocetra-OTS up to Day 21, based on the DLTs and MTD (or MAD if no MTD is defined) of Allocetra-OTS as monotherapy. 2. Stage 2: Characterize the safety of Allocetra-OTS from the first infusion of Allocetra-OTS up to Day 35, based on the DLTs and MTD (or MAD if no MTD is defined) of Allocetra-OTS in combination with nivolumab.;Timepoint(s) of evaluation of this end point: Day 21 and Day 35

Secondary

MeasureTime frame
Secondary end point(s): 1. Overall Response Rate (ORR)/Best Overall Response Rate (BORR) (percentage of patients who achieve best response of complete response [CR] or partial response [PR]). 2. Clinical benefit rate (CBR) (percentage of patients who achieve best response of CR, PR or stable disease [SD] =6 months). (Stage 1 and 2) 3. Duration of response (DoR), defined as the time from first documented evidence of CR or PR until disease progression or death. 4. Time to response (TTR), defined as the time from first infusion of AllocetraOTS to the first documented CR or PR. 5. Kaplan-Meier estimated median progression-free survival (PFS), defined as the time from the first infusion of Allocetra-OTS to disease progression or death due to any cause, whichever occurs first. 6. Kaplan-Meier estimated median overall survival (OS) defined as the time from the first infusion of Allocetra-OTS to death due to any cause. Note: All secondary endpoints are applicable to both Stage 1 and Stage 2 of the study, unless otherwise specified;Timepoint(s) of evaluation of this end point: 12 months

Countries

Greece, Israel, United States

Contacts

Public ContactIris Tavor

Enlivex Therapeutics RDO, Ltd.

iris@enlivexpharm.com+9722620-8072

Outcome results

None listed

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