A Study to Evaluate Safety and Anti-Tumor Activity of Eciskafusp Alfa (RO7284755) Alone or in Combination With Atezolizumab in Participants With Advanced and/or Metastatic Solid Tumors

Phase 1TerminatedNCT04303858

Hoffmann-La Roche189 enrolled

Overview

This is an entry-into-human study and will assess the effects of eciskafusp alfa (RO7284755) as a single agent and in combination with atezolizumab in adult participants with solid tumors considered responsive to checkpoint inhibition blockade. The maximum duration in the study for each participant will be up to 28 months.

The study consists of three parts: dose-escalation of eciskafusp alfa as a single agent (Part 1), dose-escalation of eciskafusp alfa in combination with atezolizumab (Part 2), and extension of eciskafusp alfa as a single agent and/or in combination with atezolizumab (Part 3).

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Enrollment

189

Conditions

Solid Tumors

Interventions

Eciskafusp AlfaDRUG

Participants will be administered eciskafusp alfa in different schedules.

AtezolizumabDRUG

Participants will be administered 1200 mg of atezolizumab once every 3 weeks.

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Locally advanced/unresectable or metastatic disease * No standard of care (SoC) (approved) treatments are available for the participant, or the participant cannot tolerate such treatments * Measurable disease, as defined by Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST v1.1) * Eastern Cooperative Oncology Group Performance Status 0 to 1 * Life expectancy of \>=12 weeks * Consent to provide an archival tumor tissue sample * Adequate cardiovascular, hematological, coagulative, hepatic and renal function Exclusion Criteria: * Rapid disease progression or suspected hyperprogression or threat to vital organs or critical anatomical sites requiring urgent alternative medical intervention * Untreated central nervous system (CNS) metastases * Treated asymptomatic CNS metastases * Spinal cord compression not definitively treated with surgery and/or radiation or previously diagnosed and treated spinal cord compression without evidence that disease has been clinically stable for \>= 2 weeks before Cycle1 Day 1 (C1D1) * Active or history of carcinomatous meningitis/leptomeningeal disease * Uncontrolled tumor-related pain or symptomatic hypercalcemia * Concurrent second malignancy * Evidence of significant, uncontrolled concomitant diseases that could affect compliance with the protocol or interpretation of results * Episode of significant cardiovascular/cerebrovascular acute disease within 28 days before study treatment administration * Active or uncontrolled infections * Known HIV infection * Hepatitis B virus (HBV) or hepatitis C virus infection * Adverse events related to any prior radiotherapy, chemotherapy, targeted therapy, CPI therapy or surgical procedure must have resolved to Grade \<=1, except alopecia Grade 2 peripheral neuropathy, and hypothyroidism and/or hypopituitarism on a stable dosage of hormone replacement therapy * Participants with bilateral pleural effusion * Major surgery or significant traumatic injury \< 28 days before study treatment administration or anticipation of the need for major surgery during study treatment * Known allergy or hypersensitivity to any component of the formulations of the IMPs to be administered, including but not limited to hypersensitivity to Chinese hamster ovary cell products or other recombinant or humanized antibodies * History of severe allergic anaphylactic reactions to chimeric, human or humanized antibodies, or fusion proteins * Previous treatment with Interleukin-2 (IL-2)/Interleukin-5 (IL-15)-like cytokines. IL-2/IL-15 use as an adjunct treatment component for adoptive cell therapy is permitted. In Part 3, patients who have received adoptive cell therapy such as tumor-infiltrating lymphocytes (TIL) are excluded.

Locations (12)

Cliniques Universitaires St-Luc

Brussels, Belgium

UZ Leuven Gasthuisberg

Leuven, Belgium

Herlev Hospital

Herlev, Denmark

Outcomes

Primary Outcomes

Percentage of Participants with Adverse Events in Part 1 and Part 2

An adverse event (AE) is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product. Preexisting conditions which worsen during a study are also considered as AEs. All AE events will be graded according to National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 5.0.

Time frame: From randomization until end of Part 1 and Part 2 (up to approximately 1.5 months)

Percentage of Participants with Dose-Limiting Toxicities in Part 1 and Part 2

A DLT is defined as a clinically significant AE (classified according to the NCI CTCAE version 5) or significant laboratory abnormality that occur during the DLT assessment periods, during Part 1 and Part 2 only, and is considered by the Investigator to be related to eciskafusp alfa or to the combination of eciskafusp alfa and atezolizumab. In Part 2, expected toxicities that are, in the opinion of the Investigator, entirely attributable to atezolizumab, will not be considered DLTs.

Time frame: From randomization up to day 14 (Part 1) or day 28 (Part 2)

Investigator Assessed Objective Response Rate according to Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1) in Part 3

Objective response rate (ORR) was defined as the percentage of participants with investigator-assessed objective response of complete response (CR) or partial response (PR). PR was defined as at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum of diameters. CR was defined as disappearance of all target and non-target lesions and normalization of tumor marker levels (as applicable to non-target lesions).

Time frame: From start of extension phase until disease progression, drug discontinuation, withdrawal or death (up to approximately 26 months)

Data from ClinicalTrials.gov

This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.

Secondary Outcomes

Investigator Assessed Objective Response Rate according to Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1) in Parts 1 and 2

ORR was defined as the percentage of participants with investigator-assessed objective response of complete response (CR) or partial response (PR). PR was defined as at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum of diameters. CR was defined as disappearance of all target and non-target lesions and normalization of tumor marker levels (as applicable to non-target lesions).

Time frame: From randomization until end of Part 1 and Part 2 (up to approximately 1.5 months)

Percentage of Participants with Adverse Events in Part 3

An AE is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product. Preexisting conditions which worsen during a study are also considered as AEs. All AE events will be graded according to National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 5.0.

Time frame: From start of extension phase until disease progression, drug discontinuation, withdrawal or death (up to approximately 26 months)

Disease Control Rate in Part 3

The disease control rate was defined as proportion of participants being either responder or in 'stable disease' (SD). To classify a response as SD, measurements will have to be classified as stable (according to RECIST v1.1) at least once at a minimum of 4 weeks after study entry.

Time frame: From start of extension phase until disease progression, drug discontinuation, withdrawal or death (up to approximately 26 months)

Duration of Response in Part 3

Duration of response will be calculated for 'responder' participants (i.e. best \[confirmed\] overall response of CR or PR) and will be defined as the time from first occurrence of a documented response until the time of documented disease progression or death (death within 30 days from last study treatment) from any cause, whichever occurs first.

Time frame: From start of extension phase until disease progression, drug discontinuation, withdrawal or death (up to approximately 26 months)

Progression-free survival (PFS) in Part 3

Progression-free survival was defined as the time from first dose of study treatment to the first occurrence of documented disease progression (based on RECIST 1.1 Investigator's assessment) or death from any cause, whichever occurs first.

Time frame: From start of extension phase until disease progression, drug discontinuation, withdrawal or death (up to approximately 26 months)

Change from Baseline in Antidrug Antibody (ADA) to Eciskafusp Alfa

Time frame: Up to 28 months

Percentage of Partcipants with ADAs to Eciskafusp Alfa

Time frame: Up to 28 months

Area Under the Curve (AUC) for Eciskafusp Alfa

Time frame: Predose, C1 Days 1, 2, 3, 5, 8, 9, 10, 12, 15, 16, 17, and 19; C2 Days 1, 2, 8, 9, 10, 12, 15, and 16; C3 Days 1, 2, 3, and 8; C4 Days 1 and 2; C5 Days1, 2, and 8; and days 1 and 2 for any subsequent cycles (Up to 28 months)

Minimum Concentration (Cmin) for Eciskafusp Alfa

Maximum Concentration (Cmax) for Eciskafusp Alfa

Clearance (CL) for Eciskafusp Alfa

Volume of Distribution at Steady-State Conditions (Vss) for Eciskafusp Alfa

Percentage of Immune and Tumor Cells with Positive Programmed Cell Death-1 (PD-1) and Programmed Cell Death-Ligand 1 (PD-L1) Expression in the Tumor Microenvironment (TME)

Time frame: Baseline

Percentage of Immune Cells with CD8+ PD1+ and CD8+ PD1+ TCF7+ Expression

Time frame: Baseline

Blood Tumor Mutational Burden

Blood tumor mutational burden is defined as the number of genetic mutations per megabase (1,000,000 bases).

Time frame: Baseline

Change from Baseline in Percentage of Immune Cell Subsets

Immune cells include NK, CD8, and Treg cells

Time frame: Baseline to End of Treatment (up to approximately 28 months)

Change from Baseline in Percentage of Immune Markers

Immune markers include PD-1, PD-L1, sCD25, cytokines, etc...

Time frame: Baseline to End of Treatment (up to approximately 28 months)