Research of Biomarkers of Response to Proton Beam Therapy in Pediatric and Adult Patients. (PROTONBIOMARKS)

  • End date
    Jun 11, 2024
  • participants needed
  • sponsor
    Centre Leon Berard
Updated on 4 October 2022
measurable disease
karnofsky performance status
tumor cells
brain tumor
proton therapy


This trial is a paucicentric, clinico-biological cohort study with retrospective and prospective enrollment, aiming to identify biomarkers predictive of response to Proton Beam Therapy (PBT) in cancer patients (high grade sarcoma, brain tumors and meningioma). This study include collection of clinical data, of tumor samples (collected during standard of care) and a blood sample for alive patients.


The proton beam model policy adopted by the American Society of Radiation Oncology (ASTRO) in 2017 supports proton therapy in primary solid neoplasms in children treated with curative intent. To date, PBT is also recognised in adults as a valid option providing life expectancy > 10 years, for inoperable axial or head and neck sarcomas, low grade brain tumors (i.e. low grade astrocytoma, oligodendroglioma and ependymoma), non-operated meningioma of skull base and other rare clinical situations (re-irradiation, locally aggressive tumor malignant or not arising in sites which preclude R0 or R1 surgical resection). Recently, Jhaveri et al. have reported the retrospective analysis of a National Cancer Data Base (NCDB) and shown an improved overall survival in adult Grade I-IV glioma patients treated with PBT versus patients treated with radiotherapy (XRT). Positive impact on toxicity free survival and general health status of patients were reported in others indications. centers join their expertise (pediatric, brain and sarcoma cancers for Centre Léon Bérard (CLB) and protons for CAL) and their recruitment to optimize the treatment strategy for these patients.

The Centre Leon Bérard recently reported on the ProfilER protocol (NCT01774409). It is the largest molecular characterization program in France with now over 4000 patients included. It enabled to identify genomic biomarkers of radio resistance. In this context, the investigator's proposal is to conduct a genomic, epigenetic, and immunological analysis of patients treated with proton beam therapy with the aim to identify Biomarkers of response to PBT in pediatric and adult patients.

Condition Brain Cancer, Meningioma, Sarcoma
Clinical Study IdentifierNCT04367779
SponsorCentre Leon Berard
Last Modified on4 October 2022


Yes No Not Sure

Inclusion Criteria

I1 Male or female patients, all ages are eligible
I2 Confirmed diagnosis of macroscopic tumor previously treated since 2016 (retrospective cohort) or to be treated (prospective cohort) with PBT including one of the following tumor types:Cohort A : high grade sarcoma ; Cohort B: brain tumors; Cohort C: meningioma
I3 Presence of at least one measurable lesion before PBT initiation. Post operative situation is possible providing a measurable macroscopic residue, non candidate to a new surgery before PBT
I4 Availability of archival representative formalin-fixed, paraffin-embedded (FFPE) and/or frozen tumor sample, with the corresponding hematoxylin and eosin stained slide and a pathological report, meeting the following quality/quantity control (QC) criteria confirmed by a central pathological review: (this sample will be also used to confirm pathological diagnosis ) : at least 20% of tumor cells and a surface area > 5mm2 with > 90μm of depth
I5. Performance status before PBT: Lansky Play score for pediatric patients < 12 years of age ≥ 70%; Karnofsky performance status for pediatric patients ≥ 12 years of age ≥ 70%; PS ECOG for adult patients: 0, 1 or 2
I6. For prospective cohort : Life-expectancy before PBT > 2 years
I7. For prospective cohort : Women of child-bearing potential and men must agree to use (must have used for retrospective cohort) adequate contraception during all the radiotherapy procedure
I8. For alive patients - Written informed consent from patient, parents if applicable/legal representative, before any study-specific screening procedures, and willingness to comply to study visits and procedures

Exclusion Criteria

E1. Patients previously treated with radiotherapy in the same site (re-irradiation), either with protons or photons
E2. Pregnant or breast-feeding patients at time of PBT initiation
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