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Recurrent high grade glioma surgery with carmustine wafers implantation: a long-term nationwide retrospective study
Charles Champeaux-Depond1, Vincent Jecko2, Joconde Weller3
1Department of Neurosurgery, Hôpital Privé Clairval - Ramsay Santé, 317 Bd du Redon, 13009, Marseille, France. Charles.ChampeauxDepond@gmail.com.
Purpose:
Widespread use of carmustine wafers (CW) to treat high-grade gliomas (HGG) has been limited by uncertainties about its efficacy. To assess the outcome of patients after recurrent HGG surgery with CW implantation and, search for associated factors.
Methods:
We processed the French medico-administrative national database between 2008 and 2019 to retrieve ad hoc cases. Survival methods were implemented.
Results:
559 patients who had CW implantation after recurrent HGG resection at 41 different institutions between 2008 and 2019 were identified. 35.6% were female and, median age at HGG resection with CW implantation was 58.1 years, IQR [50-65.4]. 520 patients (93%) had died at data collection with a median age at death of 59.7 years, IQR [51.6-67.1]. Median overall survival (OS) was 1.1 years, 95%CI[0.97-1.2], id est 13.2 months. Median age at death was 59.7 years, IQR [51.6-67.1]. OS at 1, 2 and 5 years was 52.1%, 95%CI[48.1-56.4], 24.6%, 95%CI[21.3-28.5] & 8%, 95%CI[5.9-10.7] respectively. In the adjusted regression, bevacizumab given before CW implantation, (HR = 1.98, 95%CI[1.49-2.63], p < 0.001), a longer delay between the first and the second HGG surgery (HR = 1, 95%CI[1-1], p < 0.001), RT given before and after CW implantation (HR = 0.59, 95%CI[0.39-0.87], p = 0.009) and TMZ given before and after CW implantation (HR = 0.81, 95%CI[0.66-0.98], p = 0.034) remained significantly associated with a longer survival.
Conclusion:
OS of patients with recurrent HGG that underwent surgery with CW implantation is better in case of prolonged delay between the two resections and, for the patients who had RT and TMZ before and after CW implantation.
