Authors: Chaichana, Kaisorn L; Zaidi, Hasan; Pendleton, Courtney; McGirt, Matthew J; Grossman, Rachel; Weingart, Jon D; Olivi, Alessandro; Quiñones-Hinojosa, Alfredo; Brem, Henry

Source: Neurological Research, Volume 33, Number 7, September 2011 , pp. 759-764(6)

Publisher: Maney Publishing

Abstract:

Objective: Peak incidence of glioblastoma multiforme (GBM) occurs in individuals aged 65 years and older. The goal was to evaluate the efficacy of carmustine wafers in prolonging survival for older GBM patients. Methods: One hundred and thirty-three consecutive patients aged 65 years and older who underwent surgery for an intracranial primary (de novo) GBM from 1997–2007 were retrospectively reviewed. Among these 133 patients, 45 patients with carmustine wafer implantation were matched with 45 patients without implantation. These groups were matched for factors consistently shown to be associated with survival (age, Karnofsky performance scale, extent of resection, radiation therapy, and temozolomide). Survival was expressed as estimated Kaplan-Meier plots, and log-rank analysis was used to compare survival curves. Variables with P<0.05 were considered statistically significant. Results: The mean (±standard deviation) age of the cohort was 73±5 years, and the median survival of the entire cohort was 5.9 months. Among patients with and without carmustine wafers, there were no significant differences in pre- and peri-operative variables. However, patients with carmustine wafers demonstrated prolonged survival as compared to patients without wafers. The median survival for patients with carmustine wafers was 8.7 months, while median survival for patients without wafers was 5.5 months (P=0.007). Likewise, in subgroup analysis, patients older than 70 years (P=0.0003) and 75 years (P=0.04) who had carmustine wafers had significantly longer survival than matched patients without wafers. Discussion: Older patients with GBM may benefit from carmustine wafers. The survival for older patients who received carmustine wafers is significantly longer than matched patients who did not receive carmustine wafers.

Keywords: Survival; Carmustine wafers; GBM; Glioblastoma; Elderly; Gliadel

Document Type: Original Article

DOI: http://dx.doi.org/10.1179/1743132811Y.0000000006

Affiliations: Department of Neurosurgery, The Johns Hopkins Neuro-Oncology Surgical Outcomes Research Laboratory, Johns Hopkins University School of Medicine, Baltimore, MD, USA

Publication date: 2011-09-01

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