Factors PFS OS Months Log rank p Months Log rank p Age (yr) < 60 6   0.0339 15 0.2125 ≥ 60 14 14 Karnofsky ≤ 70 6   0.4584 13   0.6207 Performance Score > 70 6 15 EGFR +ve/PTEN -ve 9   0.0058 20   0.0078 PTEN +ve/EGFR -ve 6 13 EGFR/PTEN (Both +ve) 6 9 EGFR/PTEN (Both -ve) 6 14   Procedure Gross Total Resection 7   0.0001 17   0.1112 Sub Total Resection 5 15 Biopsy 3 8

Table 5: Factors affecting progression free survival and overall survival.*95% CI at (---) could not be developed due to the sub sample that was too small.