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Sex is an important prognostic factor for glioblastoma but not for nonglioblastoma.

ABSTRACT: Background: Glioblastoma (GBM) is the most common and most malignant glioma. Nonglioblastoma (non-GBM) gliomas (WHO Grades II and III) are invasive and also often fatal. The goal of this study is to determine whether sex differences exist in glioma survival.

Methods: Data were obtained from the National Cancer Database (NCDB) for years 2010 to 2014. GBM (WHO Grade IV; N = 2073) and non-GBM (WHO Grades II and III; N = 2963) were defined using the histology grouping of the Central Brain Tumor Registry of the United States. Non-GBM was divided into oligodendrogliomas/mixed gliomas and astrocytomas. Sex differences in survival were analyzed using Kaplan-Meier and multivariable Cox proportional hazards models adjusted for known prognostic variables.

Results: There was a female survival advantage in patients with GBM both in the unadjusted (P = .048) and adjusted (P = .003) models. Unadjusted, median survival was 20.1 months (95% CI: 18.7-21.3 months) for women and 17.8 months (95% CI: 16.9-18.7 months) for men. Adjusted, median survival was 20.4 months (95% CI: 18.9-21.6 months) for women and 17.5 months (95% CI: 16.7-18.3 months) for men. When stratifying by age group (18-55 vs 56+ years at diagnosis), this female survival advantage appeared only in the older group, adjusting for covariates (P = .017). Women (44.1%) had a higher proportion of methylated MGMT (O⁶-methylguanine-DNA methyltransferase) than men (38.4%). No sex differences were found for non-GBM.

Conclusions: Using the NCDB data, there was a statistically significant female survival advantage in GBM, but not in non-GBM.

SUBMITTER: Gittleman H

PROVIDER: S-EPMC6899055 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature

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Sex is an important prognostic factor for glioblastoma but not for nonglioblastoma.

Gittleman Haley H Ostrom Quinn T QT Stetson L C LC Waite Kristin K Hodges Tiffany R TR Wright Christina H CH Wright James J Rubin Joshua B JB Berens Michael E ME Lathia Justin J Connor James R JR Kruchko Carol C Sloan Andrew E AE Barnholtz-Sloan Jill S JS

Neuro-oncology practice 20190518 6

<h4>Background</h4>Glioblastoma (GBM) is the most common and most malignant glioma. Nonglioblastoma (non-GBM) gliomas (WHO Grades II and III) are invasive and also often fatal. The goal of this study is to determine whether sex differences exist in glioma survival.<h4>Methods</h4>Data were obtained from the National Cancer Database (NCDB) for years 2010 to 2014. GBM (WHO Grade IV; N = 2073) and non-GBM (WHO Grades II and III; N = 2963) were defined using the histology grouping of the Central Bra ...[more]

PMID: 31832215

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Dataset Information

Sex is an important prognostic factor for glioblastoma but not for nonglioblastoma.

Publications

Sex is an important prognostic factor for glioblastoma but not for nonglioblastoma.

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