They showed that the addition of TMZ had the greatest benefit in MGMT methylated patients (median OS 13.5 vs 7.7 months, HR: 0.53, CI: 0.38–0.73, p < 0.001), but the OS did not reach statistical significance in the MGMT unmethylated group (median OS 10 vs 7.9 months; HR: 0.75, CI: 0.56 to 1.01, p = 0.055, p = 0.08 for interaction) [ 25 ].
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Identifying the optimal cutoff point for MGMT promoter methylation status in glioblastoma.
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