A Novel Therapeutic Vaccine (EO2401) in Metastatic Adrenocortical Carcinoma, or Malignant Pheochromocytoma/Paraganglioma (Spencer)

November 28, 2023 updated by: Enterome

A Phase 1/2 Trial of a Novel Therapeutic Vaccine (EO2401) in Combination With Immune Check Point Blockade, for Treatment of Patients With Locally Advanced or Metastatic Adrenocortical Carcinoma, or Malignant Pheochromocytoma/Paraganglioma

This is a multicenter, Phase 1/2, First-In-Human study to assess the safety, tolerability, immunogenicity, and preliminary efficacy of EO2401 in Metastatic Adrenocortical Carcinoma, or Malignant Pheochromocytoma/Paraganglioma.

Study Overview

Status

Active, not recruiting

Detailed Description

EO2401 is an innovative cancer peptide therapeutic vaccine based on the homologies between Tumor Associated Antigens and microbiome-derived peptides that will be administered in combination with nivolumab to generate preliminary safety and efficacy data in patients with Metastatic Adrenocortical Carcinoma, or Malignant Pheochromocytoma/Paraganglioma.

Study Type

Interventional

Enrollment (Actual)

70

Phase

  • Phase 2
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

      • Copenhagen, Denmark, 2100
        • Rigshospitalet
      • Lille, France, 59037
        • CHU Lille
      • Lyon, France, 69008
        • Centre Léon Bérard
      • Marseille, France, 13915
        • Assistance Publique - Hopitaux de Marseille - Hopital Nord
      • Villejuif, France, 94800
        • Institut Gustave Roussy
      • München, Germany
        • LMU Klinikum
      • Würzburg, Germany, 97080
        • Universitätsklinikum Würzburg
      • Brescia, Italy, 25121
        • Azienda Ospedaliera Spedali Civili
      • Amsterdam, Netherlands, 1081
        • Amsterdam UMC, location VUMc
      • Barcelona, Spain, 08035
        • Hospital Universitari Vall d'Hebron
      • Stockholm, Sweden, 17176
        • Karolinska University Hospital
    • Texas
      • Houston, Texas, United States, 77030
        • MD Anderson Cancer Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Main Inclusion Criteria:

  1. For inclusion in Cohort 1 patients should have adrenocortical carcinoma(ACC), or malignant pheochromocytoma/paraganglioma (MPP), as defined below for Cohorts 2A and 3A.
  2. For inclusion in Cohorts 2A and 2B patients should have histologically confirmed (at primary diagnosis) unresectable locally advanced or metastatic adrenocortical carcinoma.
  3. For inclusion in Cohorts 3A and 3B patients should have histologically confirmed (at primary diagnosis) unresectable malignant (defined as metastatic disease, i.e. presence of chromaffin tissue in non-chromaffin organs) pheochromocytoma/paraganglioma, and RECIST defined progression should have been documented during a maximum of an 18-months period.
  4. Patients with an age ≥ 18 years old.
  5. Patients who are human leukocyte antigen (HLA)-A2 positive.
  6. Patients with an Eastern Cooperative Oncology Group (ECOG) performance status ≤ 1.
  7. Patients with a life expectancy > 4 months as judged by their treating physician.
  8. Patients with at least one measurable lesion according to RECIST 1.1.
  9. Males or non-pregnant, non-lactating, females.
  10. Patients willing and able to comply with the scheduled visits, treatment plan, laboratory tests, and other study procedures indicated in the protocol.
  11. Patients having received the information sheet and who have provided written informed consent prior to any study-related procedures.

Main Exclusion Criteria:

  1. Patients treated with dexamethasone > 2 mg/day or equivalent (i.e. 13 mg/day of prednisone, or 53 mg/day of hydrocortisone) within 14 days before the first EO2401 administration, unless required to treat an adverse event.
  2. Patients with prior treatment with immune check-point inhibitors
  3. Patients with prior exposure to EO2401.
  4. Patients treated with immunotherapy (meaning immunostimulatory or immunosuppressive therapy; beside excluded, or allowed, compounds per other inclusion/exclusion criteria specifications), radionuclide therapy, radiotherapy, cytoreductive therapy, or received treatment with any other investigational agent within 28 days before the first EO2401 administration.
  5. Patients with an initial diagnosis of ACC less than 9 months from start of screening part 2.
  6. Patients with ACC and any individual lesion according to RECIST 1.1 having a maximum diameter of more than 125 mm; irrespective if the lesion is proposed as a target lesion, or not, according to RECIST 1.1.
  7. Patients with ACC with more than three organs involved by disease, combined with unresectable primary tumor.
  8. Patients with ACC and uncontrolled hormonal secretion (according to the judgement of the treating physician).
  9. Patients with MPP and uncontrolled blood pressure (according to the judgement of the treating physician).
  10. Patients with abnormal laboratory values.
  11. Patients with persistent Grade 3 or 4 toxicities.
  12. Uncontrolled central nervous system (CNS) metastasis.
  13. Other malignancy or prior malignancy with a disease-free interval of less than 3 years
  14. Patients with clinically significant disease.
  15. Patients with suspected autoimmune or active autoimmune disorder or known history of an autoimmune neurologic condition (e.g. Guillain-Barré syndrome).
  16. Patients with history of solid organ transplantation or hematopoietic stem cell transplantation.
  17. Patients with history or known presence of tuberculosis.
  18. Pregnant and breastfeeding patients.
  19. Patients with history or presence of human immunodeficiency virus and/or potentially active hepatitis B virus/hepatitis C virus infection.
  20. Patients who have received live or attenuated vaccine therapy used for prevention of infectious diseases including seasonal (influenza) vaccinations within 4 weeks of the first dose of study drug.
  21. Patients with a history of hypersensitivity to any excipient present in the pharmaceutical forms of the study treatments.
  22. Patients treated with herbal remedies with immunostimulating properties or known to potentially interfere with major organ function.
  23. Patients with known ongoing drug and alcohol abuse.
  24. Patients with known or underlying medical or psychiatric condition that, in the Investigator's opinion, would make the administration of study drug hazardous to the patient or obscure the interpretation of toxicity determination or AEs.
  25. Patients deprived of their liberty, under protective custody, or guardship.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: 5-cohort study design

Cohort 1:3-by-3 design of EO2401 in combination with nivolumab at standard dose. Three to 12 evaluable patients with adrenal carcinoma or progressive malignant pheochromocytoma/paraganglioma will be included depending on the safety profile of the administered treatments.

Cohorts 2A (previously treated patients) and 2B (previously untreated patients): evaluation of EO2401in combination with nivolumab in 33 patients with adrenal carcinoma.

Cohorts 3A (previously treated patients) and 3B (previously untreated patients) : evaluation of EO2401 combination with nivolumab in 20 patients (globally for both Cohorts 3A and 3B) with progressive malignant pheochromocytoma/ paraganglioma.

Multiple dose of EO2401
Multiple dose of nivolumab
Experimental: randomized extension of Cohort 2A (3 arms): C2A-I
Randomized extension of Cohort 2A (65 patients using a 4:1:1 ratio): 43 patients belonging to this extension of Cohort 2A will be treated by EO2401 and nivolumab in combination.
Multiple dose of EO2401
Multiple dose of nivolumab
Experimental: randomized extension of Cohort 2A (3 arms): C2A-II
11 patients belonging to this extension of Cohort 2A will be treated by EO2401 alone.
Multiple dose of EO2401
Active Comparator: randomized extension of Cohort 2A (3 arms): C2A-III
11 patients belonging to this extension of Cohort 2A who will be treated by nivolumab alone.
Multiple dose of nivolumab

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Adverse events assessment
Time Frame: Up to 24 months
Incidences of adverse events(AEs), treatment-emergent AEs (TEAEs), Serious Adverse Events ( SAEs), deaths, and laboratory abnormalities using the National Cancer Institute-Common Terminology Criteria for AEs (NCI-CTCAE) v5.0.
Up to 24 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Evaluation of survival
Time Frame: From end of treatment to at least 24 months after last patient enrollment
Overall survival, defined as the time interval from the date of first study treatment administration to the date of death due to any cause
From end of treatment to at least 24 months after last patient enrollment
Assessment of the immunogenicity
Time Frame: Up to 24 months
Assessment of the immunogenicity of the 4 components that compose EO2401 Immunogenicity will be assessed by Interferon-γ ELISpot
Up to 24 months
Evaluation of Progression Free Survival at 6 months
Time Frame: 6 months after first treatment date from the last patient enrolled
Progression Free Survival according to iRECIST criteria defined as the time interval from the date of first study treatment administration to 6 months after
6 months after first treatment date from the last patient enrolled

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Investigators

  • Study Director: Jean-Michel Paillarse, Enterome

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

July 23, 2020

Primary Completion (Estimated)

May 30, 2024

Study Completion (Estimated)

November 30, 2025

Study Registration Dates

First Submitted

December 3, 2019

First Submitted That Met QC Criteria

December 4, 2019

First Posted (Actual)

December 5, 2019

Study Record Updates

Last Update Posted (Actual)

November 29, 2023

Last Update Submitted That Met QC Criteria

November 28, 2023

Last Verified

November 1, 2023

More Information

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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