Phase III Intergroup Study of Temozolomide Alone versus Radiotherapy with Concomitant and Adjuvant Temozolomide versus Radiotherapy with Adjuvant PCV Chemotherapy in Patients with 1p/19q Co-deleted Anaplastic Glioma or Low Grade Glioma

Radiation therapy uses high-energy x-rays to kill tumor cells. Drugs used in chemotherapy, such as temozolomide, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. It is not yet known whether giving radiation with concomitant and adjuvant temozolomide versus radiation with adjuvant PCV is more effective in treating anaplastic glioma or low grade glioma.

Inclusion Criteria:
• Newly diagnosed and =< 3 months from surgical diagnosis; patients are also eligible if they have had a prior surgical procedure > 3 months earlier for low grade glioma, as long as the patient has not received prior radiation or prior chemotherapy
• Histological evidence of World Health Organization (WHO) grade III anaplastic glioma or WHO grade II low grade glioma with locally diagnosed combined 1p/19q loss and the presence of an either IDH1 or IDH2, both as established by a local or referenced laboratory qualified for the study
* Note: mixed gliomas are eligible, regardless of the degree of astrocytic or oligodendrocytic predominance, as long as the tumor is also co-deleted for 1p and 19q
• Patients with codeleted low grade gliomas must also be considered high risk by exhibiting one or more of the following characteristics:
-Age >= 40 and any surgical therapy
-Age < 40 with prior and subtotal resection or biopsy (i.e., anything less than gross total resection)
-Documented growth following prior surgery (NOTE: patients with prior surgery cannot have received prior radiation, chemotherapy or targeted therapy)
-Intractable seizures
• Surgery (partial or gross total resection or biopsy) must be performed >= 2 weeks prior to registration; patient must have recovered adequately from the effects of surgery
• Willingness and ability to personally complete neurocognitive testing (without assistance) and willingness to complete the QOL testing, (either personally or with assistance)
• Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0, 1 or 2
• Willingness to return to enrolling institution for follow-up during the active monitoring phase (that is, the active treatment and observation portion) of the study); patients who have been formally transferred to another active and approved site participating in this study would not need to return to the enrolling institution for this purpose
• Willingness to allow the provision of tissue samples for correlative research
• Willingness to allow the provision of blood samples for correlative research

Exclusion Criteria:
• Pregnant women
• Nursing women
• History of prior radiation therapy or chemotherapy for glioma; note: patients who have a history of prior low grade glioma (with or without a distant history of prior surgery for that glioma), but who have never received prior chemotherapy or radiation therapy for the glioma are eligible for the study
• Receiving any other investigational agent that would be considered as a treatment for the primary neoplasm
• Other active malignancy within 5 years of registration; exceptions: non-melanotic skin cancer or carcinoma-in-situ of the cervix; note: if there is a history of prior malignancy, the patient is not eligible if they are receiving other specific treatment (with the exclusion of hormonal therapy or Her-2 inhibitors) for their cancer or if they have received prior total body irradiation which included the brain
• History of myocardial infarction =< 6 months, or congestive heart failure requiring use of ongoing maintenance therapy for life-threatening ventricular arrhythmias
Phase III
Alison Conlin, M.D.
Chris Fountain

The Pacific Cancer Research Consortium clinical trials are offered at multiple locations throughout Oregon, Washington, Alaska, California, and Idaho. To find a location near you, please contact the Patient Engagement Center at 844-552-2734.