1. The defining feature of oligodendroglioma as per molecular classification of gliomas is-

• TP53 mutation
• ATARAX loss mutation
• 1p19q co-deletion
• Both B & C

2. CDKN2A/B non-deletion is a specific feature for

• High grade glioma
• Oligodendroglioma
• Grade 2-3 glioma
• Pilocytic astrocytomas

3. Which of the following statements is true?

• Antiseizure medications are essential for all brain tumour patients.
• Glucocorticoids are necessary for all patients of gliomas.
• Antiseizure medications are not generally recommended in patients who have never had a seizure.
• Glucocorticoids are safe medicines for brain tumour patients.

4. Which of the following is an indication for immediate post-operative radiotherapy for low-grade gliomas?

• Residual disease less than 2 cm
• Younger patients
• KPS score of 90
• Presence of neurological deficit

5. Which of the following statements is false?

• PCV chemotherapy can be used in low grade gliomas.
• Temozolomide is indicated in low grade gliomas.
• Only adjuvant chemotherapy has demonstrated benefit in low grade gliomas.
• Chemotherapy is not indicated in low grade gliomas.