NCT06814353

Intraoperatively Observed Site of Origin and Growth Pattern of Medulloblastoma

An International Multicenter Prospective Cohort Study Investigating the Intraoperatively Observed Site of Origin and Growth Pattern of the Molecular Groups of Medulloblastoma

• Status: Enrolling By Invitation
• Phase: —
• Study type: Observational
• Enrollment: 100 (estimated)
• Sponsor: Christian Dorfer · Academic / Other
• Sex: All
• Age: —
• Healthy volunteers: Not accepted

Summary

The goal of this observational study is to provide accurate and systematic data on the site of origin and growth pattern of medulloblastoma from a neurosurgical perspective. By integrating intraoperative, radiological and genetic classification data, this study will contribute to our current understanding of the development, site of origin and growth pattern of medulloblastoma and advance the predictive accuracy of radiogenomics models. Patients with histologically confirmed medulloblastoma who undergo surgical resection at a high-volume center with expertise in pediatric neurosurgery will be included. The main questions it aims to answer are: * Is there a significant difference between the intraoperatively observed site of origin and the preoperatively or postoperatively radiologically assessed site of origin of medulloblastoma? * How does the intraoperatively observed site of origin align with the site of origin associated with the molecular group based on the developmental cell lineage concept of medulloblastoma? * Does incorporating the intraoperatively observed site of origin as a feature improve the predictive accuracy of radiomic models for molecular group classification? Participants will: * Undergo intraoperative assessment of site of origin and growth pattern by an experienced pediatric neurosurgeon. * Have their site of origin and growth pattern evaluated on pre- and postoperative magnetic resonance imaging by an neuroradiologist with expertise in pediatric brain tumors.

Conditions

• Medulloblastoma

Interventions

Type	Name	Description
PROCEDURE	Intraoperative assessment of the site of origin and growth pattern	The assessment of the epicenter and extension and therefore the assumed origin of tumor growth is conducted by an experienced pediatric neurosurgeon blinded to group allocation based on the intraoperative impression. The anatomical features and site of origin are systematically documented on the surgical form in all cases of this study.

Timeline

• Start date: 2024-03-01
• Primary completion: 2026-03-01
• Completion: 2026-03-01
• First posted: 2025-02-07
• Last updated: 2025-02-07

Locations

4 sites across 3 countries: Austria, Germany, Netherlands