Vigil + Irinotecan and Temozolomide in Ewing's Sarcoma

Status: Active


This is a multicenter, 1:1 randomized Phase III study of intradermal autologous Vigil immunotherapy (1.0 x 10e6 cells / injection; minimum of 4 to a maximum of 12 administrations) in combination with irinotecan and temozolomide in subjects with metastatic Ewing's sarcoma Family of Tumors (ESFT) refractory / intolerant or recurrent to 1 prior line of chemotherapy. Participants undergoing a standard surgical procedure (e.g., tumor biopsy or palliative resection) may have tumor tissue harvested for manufacture of the investigational product, Vigil.

Eligibility Criteria

Inclusion Criteria

  • Histologically confirmed Ewing's Sarcoma Family of Tumors (ESFT).
  • Age ≥ 2 years.
  • Estimated survival ≥ 6 months.
  • Evidence of EWS translocation by FISH or RT-PCR or Next Generation Sequencing (NGS). If available, NGS sequencing report should be submitted to Gradalis.
  • Recurrence or refractory to 1 line of systemic chemotherapy, including but not limited to doxorubicin, vincristine, and ifosfamide.
  • Planned standard of care surgical procedure (e.g., tumor biopsy or palliative resection or thoracentesis) and expected availability of a cumulative soft-tissue mass of ~10-30 grams tissue ("grape" to "golf-ball" size / approximately 2 cm total diameter on imaging) or pleural fluid estimated volume ≥ 500mL (from a primary or secondary thoracentesis, yielding in a high volume of tumor cells) for immunotherapy manufacture.
  • Tumor intended for immunotherapy manufacture is not embedded in bone and does not contain luminal tissue (e.g. bowel, ureter, bile duct).
  • Ability to understand and the willingness to sign a written protocol specific informed consent for tissue harvest or a parental/guardian informed consent and pediatric assent when appropriate.

Exclusion Criteria

  • Medical condition requiring any form of chronic systemic immunosuppressive therapy (steroid or other) except physiologic replacement doses of hydrocortisone or equivalent (no more than 30 mg hydrocortisone or 10 mg prednisone equivalent daily) for < 30 days duration.
  • Known history of other malignancy unless having undergone curative intent therapy without evidence of that disease for ≥ 3 years except cutaneous squamous cell and basal cell skin cancer, superficial bladder cancer, in situ cervical cancer or other in situ cancers are allowed if definitively resected.
  • Brain metastases unless treated with curative intent (gamma knife or surgical resection) and without evidence of progression for ≥ 2 months.
  • Any documented history of autoimmune disease with exception of Type 1 diabetes on stable insulin regimen, hypothyroidism on stable dose of replacement thyroid medication, vitiligo, or asthma not requiring systemic steroids.
  • Known HIV or chronic Hepatitis B or C infection.
  • Known hypersensitivity to any temozolomide component or to dacarbazine (DTIC).
  • Known hypersensitivity to irinotecan or its excipients.
  • Known history of allergies or sensitivities to gentamicin.
  • History of or current evidence of any condition (including medical, psychiatric or substance abuse disorder), therapy, or laboratory abnormality that might confound the results of the study, interfere with the patient's participation for the full duration of the study, or is not in the best interest of the patient to participate, in the opinion of the treating Investigator.

Locations & Contacts


Mayo Clinic in Florida
Status: Active
Name Not Available


Saint Louis
Siteman Cancer Center at Washington University
Status: Active
Name Not Available

New York

New York
Memorial Sloan Kettering Cancer Center
Status: Active
Contact: Leonard H. Wexler
Phone: 212-639-7990

Trial Objectives and Outline

Participants will be managed in an outpatient setting. Hematologic function, liver enzymes, renal function and electrolytes will be monitored. Blood for immune function analyses including IFNγ-ELISPOT analysis of cytotoxic T cell activation in response to autologous tumor antigens will be collected at tissue procurement, post-procurement screening and Day 1 (prior to chemotherapy administration) at Cycles 2, 4, and 6, end of treatment (EOT), 3 months after EOT, and every 6 months thereafter. Blood for ctDNA analysis will be collected at tissue procurement, prior to chemotherapy administration at baseline and on Day 1 prior to chemotherapy administration at Cycles 2, 3, 4, and 6, and EOT.

Trial Phase & Type

Trial Phase

Phase III

Trial Type


Lead Organization

Lead Organization
Gradalis Inc

Trial IDs

Primary ID CL-PTL-130
Secondary IDs NCI-2018-01226 ID NCT03495921