Clinical Trials /

A Phase I Study of a Therapeutic Vaccine Candidate in Patients With Localized Breast Cancer at High-Risk of Relapse



The purpose of this study is to evaluate if a maximum tolerated dose (MTD) can be obtained following 2 administrations of the MAG-Tn3 + AS15 cancer vaccine when administered at doses of 30 µg, 100 µg or 300 µg IM every three weeks.

Related Conditions:
  • Breast Carcinoma
Recruiting Status:

Active, not recruiting


Phase 1

Trial Eligibility



  • Brief Title: A Phase I Study of a Therapeutic Vaccine Candidate in Patients With Localized Breast Cancer at High-Risk of Relapse
  • Official Title: An Open Label First-in-Human Adjuvant Phase I Study of a Synthetic Multiple Antigenic Glycopeptide Displaying a Tri Tn Glycotop (MAG-Tn3) Plus AS15, as a Therapeutic Vaccine Candidate in Patients With Non Metastatic, HER2 Negative Localized Breast Cancer at High-Risk of Relapse

Clinical Trial IDs

  • ORG STUDY ID: 2014.14
  • NCT ID: NCT02364492


  • Breast Neoplasms


MAG-TN3 + AS15MAG-Tn3 + AS15


The purpose of this study is to evaluate if a maximum tolerated dose (MTD) can be obtained following 2 administrations of the MAG-Tn3 + AS15 cancer vaccine when administered at doses of 30 µg, 100 µg or 300 µg IM every three weeks.

Detailed Description

      This study is a three dose level open-label, non-randomized, dose-escalation study Phase I of
      the safety of the vaccine candidate MAG-Tn3 + AS15 administered to patients with HER2
      negative, high-risk localized breast cancer in remission.

      A maximum of 30 patients will be included in the study:

        -  3 or 6 patients in the 1st dose level (30 µg)

        -  6 or 12 patients in the 2nd dose level (100 µg)

        -  6 or 12 patients in the 3rd dose level (300 µg) The clinical study phase I is composed
           of a vaccination period of about 4 months (16 weeks) and a follow-up period of 36 months
           (3 years).

      Each patient will receive one of the three escalating doses of MAG-Tn3 in combination with a
      fixed dose of AS15 adjuvant.

      The subject will receive 6 vaccine injections, administered by intramuscular injection with a
      3-weeks interval between injections. Each patient will be followed 36 months after the last
      injection. The follow-up period is composed of a short-term follow-up period of 6 months and
      a long-term follow-up period of 30 months.

      A total of 20 visits will be required for each patient. Clinical data and blood samples will
      be collected for analysis for each patient.

      Clinical study data will be recorded for each patient on source documentation and then
      entered on electronic CRFs (eCRFs) using a proprietary Electronic Data Capture (EDC) Clinical
      Data Base Software System. The eCRF data are to be entered by site personnel trained in EDC
      data entry.

      A monitor will visit the site regularly to check the completeness of patient records, the
      accuracy of entries on the e-CRFs, the adherence to the protocol and to Good Clinical
      Practice, the progress of enrollment, and to ensure that study drug is being stored,
      dispensed, and accounted for according to specifications.

      Institut Pasteur or designated CRO will conduct data management. Data entered into EDC will
      be housed in a central database. Changes will be tracked to provide an audit trail.
      Interactive data checks will be carried out as applicable during the data entry process.
      Additional data checks are programmed to identify errors in the SAS datasets. Applicable
      queries based on the SAS datasets will be added to EDC for resolution by data management
      personnel. At the conclusion of the study, when all data have been entered and source
      document verified, with no outstanding queries remaining, the Investigator of each site will
      be required to electronically sign each patient's casebook to confirm that the data for each
      patient are complete and accurate and consistent with the patient's source documents. The
      data will then be locked to prevent further editing.

      Concomitant medications entered into the database will be coded using the WHO Drug Reference
      List, which employs the Anatomical Therapeutic Chemical classification system. Medical
      history/current medical conditions and adverse events terminology will be coded using the
      Medical dictionary for regulatory activities.The newest version of the dictionary at data
      base lock will be used.

Trial Arms

MAG-Tn3 + AS15Experimental3 escalating doses of MAG-Tn3 in combination with a fixed dose of AS15 adjuvant. For each dose patient will receive 6 injections at 3 interval weeks.
  • MAG-TN3 + AS15

Eligibility Criteria

        Inclusion Criteria:

          1. All patients must have a diagnosis of epithelial breast carcinoma which is, according
             to TNM classification:

               -  Any T

               -  With Positive (N+) or Negative (N-) Lymph-Node depending on the patient profile
                  (see below criteria n°3)

               -  And Non metastatic (M0)

          2. HER2/neu-negative (Immunohistochemical expression "0-1+", and/or FISH/CISH "non
             amplified" according to ASCO 2012 criteria)

          3. First line treatment population with a High-Risk of Relapse as defined by:

               -  with at least one positive lymph nodes (LN) at primary surgery

               -  or after completion of 6-8 cycles of anthracyclins/taxanes-based neoadjuvant


             Negative hormone receptors: ER- and PR- , (<10%), i.e "Triple Negative breast cancer"

          4. Patients must have completed all their local and regional treatments including
             adequate surgery and radiation therapy, and at least 6 cycles of chemotherapy
             (neoadjuvant and/or adjuvant) according to institutional and national standards.

          5. The time interval between the end of all the first line standard treatment (completion
             of surgery, chemotherapy and radiation therapy) should be at least 1 month and within
             a maximum of 18 months before inclusion in the study.

          6. Patients eligible to adjuvant hormone therapy should have started their treatment for
             at least 2 months at the time of inclusion in the study.

          7. Patients treated by biphosphonates should have started their treatment for at least 28
             days at the time of inclusion in the study

          8. Patients must be free of any breast cancer recurrence as shown by standard diagnostic
             tests at the entry into the study.

          9. Patients should have an expected life expectancy of at least 12 months as evaluated by
             the investigator at the entry into the study.

         10. Written informed consent must be obtained prior to any protocol-specific procedures.

         11. Patients must have an Eastern Cooperative Oncology Group (ECOG) performance status of

         12. Patients must not be pregnant. Non-menopausal women must have a negative pregnancy
             test prior to enrolment, and must use adequate contraception (1 barrier method)
             throughout the study.

         13. Patients must be aware of the potential harm of the study treatment on any future
             pregnancy and must agree not to become pregnant within 24 months following the last
             study vaccine injection.

         14. Patients must not be lactating.

         15. Patients must be between 18 and 70 years of age.

         16. Patients must have adequate bone marrow reserve (testing within 2 weeks before
             inclusion) as evaluated by the investigator.

             WBC ≥3000/mm3, neutrophils ≥1500/mm3, platelets ≥100,000/mm3, and hemoglobin ≥10 g/dL.

         17. Patients must have an absolute lymphocytes count >800 cells/mm3

         18. Patients with creatinine clearance considerate as normal as evaluated by the
             investigator calculated creatinine clearance > 50 ml/min (using the Cockcroft-Gault

         19. Patients must have adequate hepatic function as evaluated by the investigator serum
             total bilirubin <1.5* times the upper limit of normal (ULN), AST and ALT < 3* times
             the ULN, and alkaline phosphatases<2.5* times, the ULN. Patients with an alkaline
             phosphatase above normal must have negative bone scans and abdominal CT scans prior to
             entry onto the study.

             * biological limit values specified into the NCI-CTCAE V4.03 of June 2010

         20. Before inclusion patients must have negative test for HIV1 and HIV2; no history of
             active hepatitis B or C and no chronic hepatitis B or C requiring treatment with
             antiviral therapy

         21. The patients must be covered by national social security insurance.

         22. In the view of the investigator, the patients can and will comply with the
             requirements of this protocol.

        Exclusion Criteria:

          1. Any breast cancer recurrence or metastasis.

          2. Patients with HER2/neu positive breast carcinoma (IHC score 2+ or 3+ and/or

          3. Patients with any uncontrolled bleeding disorder including coagulation disorder or
             thrombocytopenia or prothrombotic disorder.

          4. Patients with a personal history of autoimmune disease (including but not limited to
             multiple sclerosis, lupus, rheumatoid polyarthritis, inflammatory bowel diseases,
             Graves' disease and Hashimoto's disease).

          5. Patients with a history of previous anaphylaxis or severe allergic reaction to
             vaccines or other known or unknown allergens.

          6. Patients with previous splenectomy or radiation to the spleen.

          7. Patients who have received a major organ graft (including bone-marrow

          8. Patients who require chronic oral treatment (defined as more than 14 days) with
             immunosuppressive agents including glucocorticosteroïds or other immune-modifying
             drugs. Use of topical and eye drops containing glucocorticosteroïds is acceptable, as
             well as inhaled corticosteroids.

          9. Patients with previous or concomitant malignancies at other sites except effectively
             treated malignancy that has been in remission for >5 years and highly likely to have
             been cured. However patients with non-melanoma skin cancers or carcinoma in situ of
             the cervix can be included.

         10. Concurrent severe medical problems unrelated to the malignancy, which would
             significantly limit full compliance with the study or expose the patient to
             unacceptable risk.

         11. Patient with previous congestive heart failure or difficult-to-control hypertension
             and any uncontrolled vascular or cardiac disease.

         12. Patient who has medically documented history of or active major depressive episode,
             bipolar disorders (I or II), obsessive-compulsive disorder, schizophrenia, a history
             of suicidal attempt or ideation, or homicidal ideation (e.g. risk of doing harm to
             self or others).

         13. Patient selects a response of "1,2 or 3" to question 9 on the PHQ-9 question regarding
             potential for suicidal thought or ideation (independent of the total score of PHQ-9)

         14. Patient who has > CTCAE grade 3 anxiety.

         15. Patients who have received (within 30 days before the inclusion) any investigational
             (biological or non-biological) or non-registered drug or non-registered vaccine other
             than the study vaccine, or who plan to receive such a drug during the study period.

         16. Patients who have received any immunoglobulins and/or blood products within the 3
             weeks prior to vaccine injection.

         17. Patients who have received any commercial vaccine within one month before the first
             dose of study vaccine or are planned to receive any vaccine till 3 weeks after the 6th
             vaccine injection.

         18. Patients who have out of range laboratory results as specified in the inclusion

         19. Patients with a family history of congenital or hereditary immunodeficiency.
Maximum Eligible Age:70 Years
Minimum Eligible Age:18 Years
Eligible Gender:All
Healthy Volunteers:No

Primary Outcome Measures

Measure:To assess the number of patient(s) presenting dose-limiting toxicities (DLTs) from the first vaccine injection in the first patient of the dose cohort till 3 weeks after the second vaccine injection of the last patient of the dose cohort.
Time Frame:3 weeks after 2 study vaccine injections corresponding to visit number 5.
Safety Issue:


Phase:Phase 1
Primary Purpose:Interventional
Overall Status:Active, not recruiting
Lead Sponsor:Institut Pasteur

Trial Keywords

  • [C04.588.180]

Last Updated

July 7, 2021