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NCT Number: NCT07197086

Clinical and Treatment Determinant of Prognosis in Glioblastoma

Gliomas represent the most common primary malignant brain tumors in adults, with glioblastoma (WHO grade 4) being the most aggressive subtype. Despite advances in surgical techniques, radiotherapy, and chemotherapy, prognosis remains poor, particularly for high-grade gliomas. Maximal safe surgical resection is considered a cornerstone in the management of gliomas. Several studies suggest that a greater extent of resection (EOR) is associated with improved overall survival (OS) and progression-free survival (PFS), particularly in high-grade tumors. However, the benefit must be balanced against the risk of neurological deficits.

Postoperative chemoradiotherapy, particularly with temozolomide, has become the standard of care for high-grade gliomas. Despite this, the impact of EOR on outcomes in the context of adjuvant chemoradiotherapy remains a subject of ongoing investigation. This study aims to evaluate the prognostic significance of the extent of surgical resection in glioma patients who undergo postoperative chemoradiotherapy.

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Key information

Conditions

Glioblastoma Astrocytoma Glioma Neoplasms Neoplasms by Histologic Type Neoplasms, Germ Cell and Embryonal Neoplasms, Glandular and Epithelial Neoplasms, Nerve Tissue Neoplasms, Neuroepithelial Neuroectodermal Tumors

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Adult patients (≥18 years) with histologically confirmed glioma (WHO grades 2-4) Underwent neurosurgical resection (gross total, subtotal, or biopsy only) Received postoperative radiotherapy with or without concurrent and/or adjuvant temozolomide Available pre- and post-operative imaging for EOR assessment Complete medical records and follow-up data

Exclusion criteria

  • Recurrent gliomas at presentation Incomplete treatment (e.g., abandonment, death before adjuvant therapy) Lack of imaging or follow-up data

Treatment and study plan

Primary outcomes

  1. Overall survival

    Time frame: 5 years

    Overall survival (from surgery to death/last follow-up )which defined as the length of time from either the date of diagnosis or the start of treatment that patients diagnosed with the disease are still alive

Sponsors and collaborators

Lead sponsor

Assiut University

Other

Registry information

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Sep 29, 2025
Registry last updated
Sep 29, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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