Trial Information

Natural History of Postoperative Cognitive Function, Quality of Life, and Seizure Control in Patients With Supratentorial Low-Risk Grade II Glioma

PRIMARY OBJECTIVES:

I. To determine if there is difference in the average changes of neurocognitive function
(NCF) scores from baseline to the time of radiologic tumor progression or up to 5 years
(whichever occurs first), between radiologically progressed and non-progressed patients.

SECONDARY OBJECTIVES:

I. To determine if there is difference in the time to neurocognitive decline, as defined by
the Reliable Change Index - Within subjects Standard Deviation (RCI-WSD), between
radiologically progressed and non-progressed patients.

II. To evaluate NCF during the postoperative observational period of progression-free
survival (PFS) and after radiological progression for a total time on study of 5 years.

III. To determine if the changes in cognitive functioning are an early warning biomarker for
radiological progression.

IV. To explore the effect of salvage therapy on cognitive outcomes in patients who progress
during the study period for up to 5 years.

V. To evaluate quality-of-life (QOL) as measured by the European Organization for Research
and Treatment of Cancer (EORTC) QOL-30 and QOL brain module (BCN20) and health utilities as
measured by the European Quality of Life-5 Dimensions (EQ-5D), for a total time on study of
5 years.

VI. To evaluate seizure control for a total time on study of 5 years. VII. To evaluate
molecular correlates of QOL, NCF, seizure control, and PFS. VIII. To characterize aberrant
molecular pathways in low-grade gliomas (LGGs) and test the hypothesis that activation of
signaling pathways will predict worse PFS and overall survival (OS).

IX. To explore the relationship between change in cognitive function and symptomatic
progression (defined as worsening seizures or new or progressive neurologic deficits) or
clinical progression (defined as initiation of treatment interventions such as radiotherapy,
chemotherapy, or additional surgery).

OUTLINE:

Patients undergo neurocognitive assessment using the CogState Test battery (the Detection
Test (DET), the Identification Test (IDN), the One Card Learning Test (OCLT), and the Groton
Maze Learning Test (GMLT)) at baseline* and at 12, 24, 36, 42, 48, 54, and 60 months.
Patients also complete the EORTC Quality of Life Questionnaire-Core 30 (QOL-30), the Brain
Cancer Module-20 (BCM20), and the European Quality of Life-5 Dimensions (EQ-5D)
questionnaires at baseline*, at 12, 24, 36, 48, and 60 months afterwards, and before
undergoing any further treatment. Patients are instructed to complete a seizure and
medication diary during study.

Patients undergo MRI scans at baseline*, at 12, 24, 36, 48, and 60 months, and at the time
of radiological, clinical, or neurological failure.

NOTE: * 12 weeks after surgery.