Actively Recruiting

Age: 18Years +
All Genders
ID05831631

Immunophenotype Characterization of Circulating and Tumor Infiltrating Immune Cells in Malignant Brain Tumors

Led by Pietro Mortini, MD, Prof. · Updated on 2025-06-11

200

Participants Needed

1

Research Sites

52 weeks

Total Duration

On this page

AI-Summary

What this Trial Is About

This research aims to study the immune cells in patients with malignant brain tumors, including primary tumors like glioblastoma multiforme and metastatic brain tumors. Researchers want to understand the types and behavior of immune cells circulating in the blood and those present within the tumor. The goal is to see how these immune profiles relate to cancer outcomes, which may help improve understanding of these aggressive brain cancers. The study involves collecting blood samples before neurosurgical treatment and at several follow-up times: 3, 6, 9, and 12 months after surgery. Tumor samples obtained during surgery will also be analyzed to study immune T cells inside the tumor. The blood samples will be tested using flow cytometry to classify leukocyte subtypes and immune profiles, while tumor samples will undergo immunohistochemical analysis to examine immune cell distribution. Participants will provide blood samples before surgery and during follow-up visits for up to one year. Researchers will measure the count and type of leukocytes and tumor-infiltrating lymphocytes at baseline and after surgery. The study will monitor changes in immune cells over time and correlate these findings with patients' clinical progression. This is a prospective observational study involving about 200 adult patients undergoing neurosurgical treatment for malignant brain tumors.

CONDITIONS

Brief Title

Characterization of Circulating and Tumor-infiltrating Immune Cells in Malignant Brain Tumors

Who Can Participate

Age: 18Years +
All Genders

Eligibility Criteria

Eligible

You may qualify if you...

  • Adult patients (≥18 years)
  • Able to express informed consent
  • With primary or secondary malignant brain tumor
  • Requiring neurosurgical treatment (radiosurgery, stereotactic biopsy, surgery)
Not Eligible

You will not qualify if you...

  • Patients who do not meet inclusion criteria.

AI-Screening

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Your Study Journey

Screening

Duration - 2 to 4 weeks

Participants are screened for eligibility to participate in the trial.

Diagnostic Evaluation

Duration - Baseline (before and during surgery)

Participants undergo blood sampling and tumor sampling during neurosurgical procedures to characterize immune cells in blood and tumors.

1 visit (in-person) including surgery and sample collection

Long-term Monitoring

Duration - Up to 12 months

Participants have blood samples collected at multiple time-points to monitor changes in circulating immune cells during disease progression and after treatment.

Visits at 3, 6, 9, and 12 months after surgery

Trial Site Locations

Total: 1 location

1

IRCCS San Raffaele Scientific Institute

Milan, Milan, Italy, 20132

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Research Team

L

Laura Sincinelli

How is the study designed?

Study Type

OBSERVATIONAL

Masking

N/A

Allocation

N/A

Model

N/A

Primary Purpose

N/A

Number of Arms

1

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Courtney Kromer, Jordan Xu, Quinn T Ostrom...

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Effector T-cell infiltration positively impacts survival of glioblastoma patients and is impaired by tumor-derived TGF-β.

Jennifer Lohr, Thomas Ratliff, Andrea Huppertz...

https://pubmed.ncbi.nlm.nih.gov/21478334

Elevated CD3+ and CD8+ tumor-infiltrating immune cells correlate with prolonged survival in glioblastoma patients despite integrated immunosuppressive mechanisms in the tumor microenvironment and at the systemic level.

Justyna Kmiecik, Aurélie Poli, Nicolaas H C Brons...

https://pubmed.ncbi.nlm.nih.gov/24045166

Increased proportion of FoxP3+ regulatory T cells in tumor infiltrating lymphocytes is associated with tumor recurrence and reduced survival in patients with glioblastoma.

Elias J Sayour, Pat McLendon, Roger McLendon...

https://pubmed.ncbi.nlm.nih.gov/25555571