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Completed

NCT Number: NCT04246671

TAEK-VAC-HerBy Vaccine for Brachyury and HER2 Expressing Cancer

A Phase 1 open label trial of intravenous administration of TAEK-VAC-HerBy vaccine in patients with advanced brachyury and/or HER2- expressing cancer. The study will be completed in 2 stages. In Stage 1 patients will be enrolled and treated according to a 3+3 dose escalation scheme. Up to 4 dose levels will be explored to determine the recommended dose of TAEK-VAC-HerBy for Stage 2 of the trial. Stage 2 will enroll either chordoma patients for treatment with TAEK-VAC-HerBy alone, or HER2- positive breast cancer patients for combination treatment of TAEK-VAC-HerBy vaccine and therapeutic HER2 antibodies (trastuzumab). Patients in both stages will receive TAEK-VAC-HerBy intravenously, every three weeks, three administrations in total.

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

Mayo Clinic - Phoenix, Scottsdale, Arizona, United States

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

General inclusion criteria, apply to all cohorts:

  • Men and women ≥18 years old.
  • Patients must have histologically documented malignant tumor which is unresectable locally advanced or metastatic.
  • ECOG performance status 0 or 1
  • Patients must have normal organ and bone marrow function as defined in the protocol.
  • Normal left ventricular ejection fraction (LVEF) ≥50%.
  • Troponin I within normal limits.
  • A maximum cumulative dose of prior doxorubicin ≤360 mg/m2 or epirubicin ≤720 mg/m2
  • Any approved cancer therapy (except HER2 antibodies) must be completed at least 3 weeks or 5 half-lives for small molecule inhibitors, whichever is shorter, prior to the first planned dose of TVH vaccine.
  • HER-2 positive cancer: Patients are required to be on active treatment with HER2 antibodies (trastuzumab) prior to and during study treatment.
  • Chordoma patients with progressive extracranial chordoma (base of skull is permitted) not amenable for surgical resection with curative intent, nor for radiation therapy will be enrolled.
  • Patients must have recovered (Grade 1 or baseline) from any clinically significant toxicity associated with prior therapy.
  • Patients must have measurable disease by computed tomography (CT) or magnetic resonance imaging (MRI) per RECIST 1.1.

Exclusion criteria

  • Known metastatic disease to the central nervous system, unless previously treated and responded with a minimum stable disease over 2 CT scans separated at least 4 weeks from each other, and more than 6 weeks since the last dose of dexamethasone.
  • History of allergy or untoward reaction to prior vaccination with vaccinia virus, aminoglycoside antibiotics, ciprofloxacin, or egg products.
  • Subjects should have no known evidence of being immunocompromised.
  • Chronic administration (defined as >5 consecutive days of >15 mg of prednisone (or equivalent) per day) of systemic corticosteroids within 14 days of the first planned dose of TAEK-VAC-HerBy vaccine. Use of inhaled steroids, nasal sprays, eye drops, and topical creams is allowed. Steroids premedication for CT scans is allowed.
  • Clinically significant cardiomyopathy, coronary disease, congestive heart failure (NYHA class III or IV) or reduced as per institutional standards LVEF, poorly controlled hypertension (systolic >180 mm Hg or diastolic >100 mm Hg) or cerebrovascular accident within 1 year.
  • Known history of, or any evidence of active, non-infectious pneumonitis or primary pulmonary fibrosis.

Treatment and study plan

TAEK-VAC-HerBy

Biological

TAEK-VAC-HerBy will be administered intravenously every three weeks with three administrations in total at the dose defined in stage 1. During stage 2, it may also be administered concurrently with a HER2 antibody(ies) (trastuzumab, pertuzumab).

Primary outcomes

  1. Patients with Dose Limiting Toxicity (DLT)

    Time frame: DLT evaluation period is 30 days after the last vaccine dose

    Frequency of patients with DLTs

Sponsors and collaborators

Lead sponsor

Bavarian Nordic

Industry

Registry information

Official study title

Phase 1 Trial of Intravenous Administration of TAEK-VAC-HerBy Vaccine Alone and in Combination With HER2 Antibodies in Patients With Advanced Cancer.

Important dates

Study start
2020
Primary completion
2024
Study completion
2024
First posted
Jan 29, 2020
Registry last updated
Mar 3, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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