ADV/HSV-tk (gene therapy)

The investigational adenovirus gene therapy injected at tumor site followed by valacyclovir, radiotherapy, and chemotherapy

This is a prospective phase I-II study to assess the efficacy and toxicity of HSV-tk + valacyclovir gene therapy in combination with radiotherapy in recurrent glioblastoma multiforme or anaplastic astrocytoma. This study is comprised of patients who have failed standard of care treatment (maximal safe resection followed by chemoradiation).

Clinical response will be evaluated by neurological evaluation, neuropsychological testing, and imaging studies as well as by histological examination wherever a re-operation is clinically indicated. Blood samples will be taken for systemic immunological response, blood counts and liver functions tests. Toxicity will be graded by the Common Terminology Criteria for Adverse Events (CTCAE) and Radiation Therapy Oncology Group (RTOG) neuro-toxicity scores.

Study to assess the safety and efficacy of HSV-tk (gene therapy), valacyclovir, radiotherapy and chemotherapy in recurrent glioblastoma multiforme.

Live record on ClinicalTrials.gov →

• All patients must have biopsy proven recurrent anaplastic astrocytoma or glioblastoma multiforme without evidence of multifocal tumor or brainstem involvement. Multifocal disease does not exist if enhancing areas are connected by abnormal T2 FLAIR on the MRI scan.
• Radiographic evidence of recurrence/progression by iRANO criteria
• ≥ 3 weeks since any major surgery, completion of RT, or completion of all prior systemic anticancer therapy (adequately recovered from the acute toxicities of any prior therapy).
• Life expectancy ≥ 12 weeks.
• Patient can receive second treatment of HSV-tk after 6 months
• Patients should have the following characteristics: recurrent glioblastoma or AA demonstrated by biopsy or imaging study, ECOG performance status of 0-1, has had prior surgery and radiotherapy /chemotherapy for the glioblastoma.

Inclusion criteria as written on the registry, trimmed. The full list, with exclusions, is on the live record.