Sex-Specific Differences in Glioblastoma

Area of Science:

• Neuro-oncology
• Molecular biology
• Endocrinology

Background:

• Glioblastoma (GBM) is a prevalent adult brain tumor with poor prognosis.
• Existing knowledge on sex differences in GBM is limited, primarily to incidence and survival rates.
• Understanding sex-based disparities at the phenotypic and molecular levels is crucial.

Purpose of the Study:

• To comprehensively review sex differences in glioblastoma pathophysiology.
• To explore the influence of hormones, metabolism, immune system, and molecular alterations on GBM.
• To elucidate how these dimorphisms impact disease outcomes.

Main Methods:

• Literature review focusing on sex differences in GBM.
• Analysis of hormonal influences (estrogen, androgens) on GBM.
• Examination of immune system interactions and molecular pathway variations between sexes.

Main Results:

• Male patients exhibit higher GBM incidence and poorer outcomes compared to females.
• Estrogen demonstrates a protective effect, while androgens (testosterone) show detrimental effects on GBM.
• Hormonal and immune systems synergistically influence the GBM microenvironment.
• Sex-specific genetic and molecular pathway differences are emerging, potentially dictating outcome variations.

Conclusions:

• Sexual dimorphism significantly impacts glioblastoma patient outcomes.
• Hormonal and molecular sex differences are key factors in GBM pathophysiology.
• An individualized approach to GBM management, considering patient sex, is warranted.