The Impact of T2/FLAIR Evaluation per RANO Criteria on Response Assessment of Recurrent Glioblastoma Patients Treated with Bevacizumab

Raymond Y. Huang, Rifaquat Rahman, Karla V. Ballman, Sara J. Felten, S. Keith Anderson, Benjamin M. Ellingson, Lakshmi Nayak, Eudocia Q. Lee, Lauren E. Abrey, Evanthia Galanis, David A. Reardon, Whitney B. Pope, Timothy F. Cloughesy, Patrick Y. Wen

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

Purpose: The RANO criteria have not been assessed using outcome data from prospective trials.Weexamined the radiologic data of patients with recurrent glioblastoma from the randomized phase II trial (AVF3708g) to determine the effect of including T2/ FLAIR evaluation as per RANO criteria on measurements of objective response rates (ORRs) and progression-free survival (PFS) compared with assessment based on contrast enhancement (MacDonald criteria). Experimental Design: The ORRs and median PFS were determined using the RANO criteria and compared with those obtained using the MacDonald criteria. Landmark analyses were performed at 2, 4, and 6 months, and Cox proportional hazard models were used to determine the associations between OR and progression with subsequent survival. Results: The ORRs were 0.331 [95% confidence interval (CI), 0.260-0.409] and 0.393 (95% CI, 0.317-0.472) by RANO and MacDonald criteria, respectively (P > 0.0001). The median PFS was 4.6 months (95% CI, 4.1-5.5) using RANO criteria, compared with 6.4 months (95% CI, 5.5-7.1) as determined by MacDonald criteria (P = 0.01). At 2-, 4-, and 6-month landmarks, both OR status and PFS determined by either RANO or MacDonald criteria were predictive of overall survival [OS; hazard ratios for 4-month landmark (ORHR 1.93, P=0.0012; PFS HR, 4.23, P > 0.0001)]. Conclusions: The inclusion of T2/FLAIR assessment resulted in statistically significant differences in median PFS and ORRs compared with assessment of solely enhancing tumor (MacDonald criteria), although OR and PFS determined by both RANO and MacDonald criteria correlated with OS.

Original languageEnglish (US)
Pages (from-to)575-581
Number of pages7
JournalClinical Cancer Research
Volume22
Issue number3
DOIs
StatePublished - Feb 1 2016

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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