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Phase 2a Study of CAN-2409 With Standard Radiation Therapy for Malignant Glioma

Study Purpose

The purpose of this study was to evaluate the safety and potential efficacy of CAN-2409 (also known / previously described as AdV-tk, GMCI) for malignant gliomas. The approach used an adenoviral vector (disabled virus) engineered to express the Herpes thymidine kinase gene (aglatimagene besadenovec, CAN-2409), followed by an antiherpetic prodrug, valacyclovir. CAN-2409 was injected into the resection bed after standard tumor surgery and valacyclovir pills were taken for 14 days. Standard radiation and chemotherapy were administered which have been shown to work cooperatively with CAN-2409 + prodrug to kill tumor cells. The hypothesis is that this combination therapy can be safely delivered and will lead to improvement in the clinical outcome for patients with newly diagnosed malignant gliomas, including glioblastoma multiforme (WHO grade IV) and anaplastic astrocytomas (WHO grade III).

Recruitment Criteria

Accepts Healthy Volunteers

Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms

No
Study Type

An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes.


An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes.


Searching Both is inclusive of interventional and observational studies.

Interventional
Eligible Ages 18 Years and Over
Gender All
More Inclusion & Exclusion Criteria

Inclusion Criteria:

  • - Patients must have presumed resectable or partially resectable malignant glioma based on clinical and radiologic evaluation (pathologic confirmation of malignant glioma must be made at the time of surgery if not previously determined).
Patients who have previously received CAN-2409 + prodrug on this study may receive an additional CAN-2409 + prodrug course at recurrence if eligibility criteria are still met.
  • - Tumor must be accessible for injection and must not be located in the brainstem, midbrain, contained within the ventricular system, or located in an infratentorial location.
  • - Upfront patients must be planning to undergo standard radiation therapy.
  • - Patients must be 18 years of age or older.
  • - Performance status must be KPS ≥70.
  • - Patients must have SGOT (AST) < 3x upper limit of normal.
  • - Patients must have serum creatinine < 2mg/dl and calculated creatinine clearance >10ml/min.
  • - Patients must have platelets > 100,000/mm3 and WBC > 3000/mm3.
  • - Patients of reproductive age must agree to use a medically accepted form of birth control while on the study.
  • - Patients must give study specific informed consent prior to enrollment.
For re-administration, patients must be re-consented.
  • - Patients must be able to tolerate MRI scan procedure.

Exclusion Criteria:

  • - Active liver disease including cirrhosis or hepatitis.
  • - Patients on immunosuppressive drugs (with exception of corticosteroid) - Known HIV+ patients.
  • - Patients with acute infections (viral, bacterial or fungal infections requiring therapy).
  • - Pregnant or breast feeding patients.
Female patients of childbearing age must have negative serum or urine pregnancy test within 1 week of beginning therapy.
  • - Evidence of metastatic disease or other malignancy (except squamous or basal cell skin cancers).
  • - Other serious co-morbid illness or compromised organ function.
  • - Patients may not receive chemotherapy until valacyclovir is completed and may not receive other investigational anti-tumor agents within 30 days prior to study entry or during active participation in the study (defined as from CAN-2409 injection until tumor progression).

Trial Details

Trial ID:

This trial id was obtained from ClinicalTrials.gov, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.

NCT00589875
Phase

Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans.

Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data.

Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs.

Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.

Phase 2
Lead Sponsor

The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.

Candel Therapeutics, Inc.
Principal Investigator

The person who is responsible for the scientific and technical direction of the entire clinical study.

E. Antonio Chiocca, MD, PhD
Principal Investigator Affiliation Ohio State University
Agency Class

Category of organization(s) involved as sponsor (and collaborator) supporting the trial.

Industry
Overall Status Completed
Countries United States
Conditions

The disease, disorder, syndrome, illness, or injury that is being studied.

Malignant Glioma, Glioblastoma Multiforme, Anaplastic Astrocytoma, High Grade Glioma
Study Website: View Trial Website
Additional Details

Patients had resectable or partially resectable malignant glioma and received injection of CAN-2409 into remaining tumor or tumor bed after resection. Pathologic confirmation of malignant glioma must be made prior to CAN-2409 injection; if this was not possible, the injection was not performed and the subject was no longer eligible for the study. The oral prodrug, valacyclovir, started 1-3 days after CAN-2409 injection and continued for 14 days. Standard radiotherapy began on average 7 days after CAN-2409 injection for the up-front course. Patients received temozolomide as per standard of care after completion of prodrug.

Arms & Interventions

Arms

Experimental: Single arm

This study is an extension of evaluation of the surgical resection arm, Arm B, from a phase Ib study in which dose escalation on arm B was completed.

Interventions

Biological: - CAN-2409

Single dose of 3x10e11 vector particles of CAN-2409 delivered to the tumor bed after resection on day 0.

Drug: - Valacyclovir

Single course of valacyclovir at dose of 2 grams orally three times per day for 14 days starting on day 1-3

Drug: - Temozolomide

Concomitant TMZ will be administered orally once a day at a dose of 75 mg/m2 starting the next day after completing prodrug and continued for 6 weeks. Adjuvant TMZ will be administered days 1 to 5 of a 28-day cycle for 6 cycles with 150 mg/m2 administered for cycle 1, and 150 to 200 mg/m2 administered for cycles 2 to 6. Adjuvant treatment will start 1 month following completing RT.

Radiation: - Radiation therapy

Radiation will be administered to up-front patients as per standard of care for the patient. It will start 3-7 days after CAN-2409 injection, preferably closer to 3 days. It will consist of standard external field radiation, limited to the area of tumor and brain adjacent to tumor, fractionated at doses of 200cGy per day for approximately 6 weeks to a total of 5500-6000 cGy.

Contact a Trial Team

If you are interested in learning more about this trial, find the trial site nearest to your location and contact the site coordinator via email or phone. We also strongly recommend that you consult with your healthcare provider about the trials that may interest you and refer to our terms of service below.

City of Hope Medical Center, Duarte, California

Status

Address

City of Hope Medical Center

Duarte, California, 91010

The University of Chicago, Chicago, Illinois

Status

Address

The University of Chicago

Chicago, Illinois, 60637

Columbus, Ohio

Status

Address

The Ohio State University Medical Center, Dept. Neurological Surgery

Columbus, Ohio, 43210

Houston, Texas

Status

Address

The Methodist Hospital Neurological Institute

Houston, Texas, 77030