Intraoperative Radiotherapy in Newly Diagnosed Glioblastoma Multiforme (INTRAGO-II)
![]() |
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT02685605 |
Recruitment Status :
Recruiting
First Posted : February 19, 2016
Last Update Posted : May 11, 2023
|
- Study Details
- Tabular View
- No Results Posted
- Disclaimer
- How to Read a Study Record
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Glioblastoma | Procedure: Standard surgery Radiation: Intraoperative radiotherapy Radiation: Radiochemotherapy Drug: Temozolomide | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 314 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | A Multicenter Randomized Phase III Trial on INTraoperative RAdiotherapy in Newly Diagnosed GliOblastoma Multiforme (INTRAGO II) |
Actual Study Start Date : | December 9, 2016 |
Estimated Primary Completion Date : | December 2023 |
Estimated Study Completion Date : | March 2024 |

Arm | Intervention/treatment |
---|---|
Experimental: Experimental Arm (A)
Standard surgery plus intraoperative radiotherapy (20-30 Gy) followed by radiochemotherapy (EBRT: 60 Gy, 75 mg/m2/d temozolomide) and adjuvant chemotherapy with 150-200 mg/m2/d temozolomide per cycle (5/28 days).
|
Procedure: Standard surgery Radiation: Intraoperative radiotherapy Dose to applicator surface: 20-30 Gy; Carl Zeiss INTRABEAM System. IORT with a surface dose of 30 Gy is recommended.Should the proximity to any risk structure not allow to apply 30 Gy, a dose reduction by up to 10 Gy (resulting in a surface dose of 20 Gy) is allowed.
Other Name: IORT Radiation: Radiochemotherapy EBRT to 60 Gy plus 75 mg/m2/d temozolomide Drug: Temozolomide Adjuvant chemotherapy with 150-200 mg/m2/d temozolomide per cycle (5/28 days). |
Active Comparator: Control Arm (B)
Standard surgery followed by radiochemotherapy (EBRT: 60 Gy, 75 mg/m2/d temozolomide) and adjuvant chemotherapy with 150-200 mg/m2/d temozolomide per cycle (5/28 days).
|
Procedure: Standard surgery Radiation: Radiochemotherapy EBRT to 60 Gy plus 75 mg/m2/d temozolomide Drug: Temozolomide Adjuvant chemotherapy with 150-200 mg/m2/d temozolomide per cycle (5/28 days). |
- Median Progression-Free Survival [ Time Frame: 24 Months ]Determined according to modified Response Assessment in Neuro-Oncology (RANO) criteria and serial perfusion imaging
- Median Overall Survival [ Time Frame: 24 Months ]
- PFS within a 1-2 cm margin around the cavity [ Time Frame: 24 Months ]Determined by serial contrast-enhanced MRI scans using modified RANO criteria and serial perfusion imaging
- OS with respect to Age [ Time Frame: 24 Months ]Median overall survival of patients <65 vs. ≥ 65 years
- PFS with respect to Age [ Time Frame: 24 Months ]Progression-free survival of patients <65 vs. ≥ 65 years; determined according to modified RANO criteria and serial perfusion imaging
- OS with respect to KPS [ Time Frame: 24 Months ]Median overall survival of patients with KPS 80-100% vs. 60-70%
- PFS with respect to KPS [ Time Frame: 24 Months ]Progression-free survival of patients with KPS 80-100% vs. 60-70%; determined according to modified RANO criteria and serial perfusion imaging
- OS with respect to thickness of anticipated T1-Gd-enhancing (remaining) tumor margin [ Time Frame: 24 Months ]Thickness of anticipated T1-Gd-enhancing (remaining) tumor margin as per the discretion of the surgeon (margin ≥0.5 cm or multiple spots of residual tumor within the cavity vs. <0.5 cm)
- PFS with respect to thickness of anticipated T1-Gd-enhancing (remaining) tumor margin [ Time Frame: 24 Months ]Thickness of anticipated T1-Gd-enhancing (remaining) tumor margin as per the discretion of the surgeon (margin ≥0.5 cm or multiple spots of residual tumor within the cavity vs. <0.5 cm); determined according to modified RANO criteria and serial perfusion imaging
- OS with respect to extent of resection [ Time Frame: 24 Months ]
Early postoperative MRI scans must be used to determine the extent of resection (EoR). The EoR is given as sum of all maximum diameters of residual lesions in cm. OS will be calculated for the following groups:
- Max Diameter group 0: 0 cm (no residual tumor)
- Max Diameter group 1: >0 to ≤1.5 cm (cumulative if multiple residual lesions)
- Max Diameter group 2: >1.5 cm (cumulative if multiple residual lesions)
- PFS with respect to extent of resection [ Time Frame: 24 Months ]
Early postoperative MRI scans must be used to determine the extent of resection (EoR). The EoR is given as sum of all maximum diameters of residual lesions in cm. PFS will be determined according to modified RANO criteria and serial perfusion imaging for the following groups:
- Max Diameter group 0: 0 cm (no residual tumor)
- Max Diameter group 1: >0 to ≤1.5 cm (cumulative if multiple residual lesions)
- Max Diameter group 2: >1.5 cm (cumulative if multiple residual lesions)
- OS with respect to MGMT promoter methylation status [ Time Frame: 24 Months ]OS in patients with promoter methylation vs. no promoter methylation
- PFS with respect to MGMT promoter methylation status [ Time Frame: 24 Months ]PFS in patients with promoter methylation vs. no promoter methylation; determined according to modified RANO criteria and serial perfusion imaging
- Quality of Life (QoL) questionnaire [ Time Frame: 24 Months ]Assessed by European Organization for Research and Treatment (EORTC)- Quality of Life Questionnaires (QLQ C30/BN20)
- Activities of daily living (ADL), assessed using the Barthel Index (Mahoney & Barthel, 1965). [ Time Frame: 24 Months ]Change in functional outcomes as measured by BI from its baseline value.
- Radiation-related (acute / early delayed / late) neurotoxicity [ Time Frame: 24 Months ]Assessed by regular neurological examinations and serial MRI scans

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years to 80 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria
- Age ≥18 and ≤ 80 years
- Karnofsky Performance Score (KPS) ≥ 60%
- Supratentorial T1-Gd enhancing lesion(s) amenable to total resection
- Legal capacity and ability of subject to understand character and individual consequences of the clinical trial
- Patient's written IC obtained at least 24h prior to surgery
- For women with childbearing potential: adequate contraception
-
Patients must have adequate organ functions
Bone marrow function:
- Platelets ≥ 75.000/μL
- WBC ≥ 3.000/μL
- Hemoglobin ≥ 10.0 g/dL
Liver Function:
- ASAT and ALAT ≤ 3.0 times ULN
- ALP ≤ 2.5 times ULN
- Total Serum Bilirubin < 1.5 times ULN
Renal Function:
- Serum Creatinine ≤ 1.5 times ULN
Inclusion Criteria Related to Surgery:
- IORT must be technically feasible
- Histology supports diagnosis of GBM
Exclusion Criteria
- Multicentric disease (e.g. in both hemispheres) or non-resectable satellite lesions
- Previous cranial radiation therapy
- Cytostatic therapy / chemotherapy for cancer within the past 5 years
- History of cancers or other comorbidities that limit life expectancy to less than five years
- Previous therapy with anti-angiogenic substances (such as bevacizumab)
- Technical impossibility to use MRI or known allergies against MRI and/or CT contrast agents
- Participation in other clinical trials testing cancer-derived investigational agents/procedures.
- Pregnant or breast feeding patients
-
Fertile patients refusing to use safe contraceptive methods during the study
Exclusion Criteria Related to Surgery:
- Active egress of fluids from a ventricular defect
- In-field risk organs and/or IORT dose >8 Gy to any risk organ

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02685605
Contact: Martina Nesper-Brock, PhD | +49-621-383 ext 3530 | martina.nesper-brock@umm.de | |
Contact: Clinical Trial Office UMM | +49-621-383 ext 3498 | strahlentherapie.studien@umm.de |

Principal Investigator: | Frank A. Giordano, MD | Department of Radiation Oncology, University Hospital Bonn, Univeristy of Bonn, Bonn, Germany | |
Principal Investigator: | Kevin Petrecca, MD | Department of Neurosurgery, Montréal Neurological, Institute and Hospital, Montréal, Canada |
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | Frank A. Giordano, PI (Chair), University Hospital, Bonn |
ClinicalTrials.gov Identifier: | NCT02685605 |
Other Study ID Numbers: |
INTRAGO-II ARO-2016-1 ( Other Identifier: Working Party for Radiation Oncology (ARO) of the DKG ) AG-NRO-03 ( Other Identifier: German Society for Radiation Oncology (DEGRO) ) |
First Posted: | February 19, 2016 Key Record Dates |
Last Update Posted: | May 11, 2023 |
Last Verified: | May 2023 |
Glioblastoma Intraoperative Radiotherapy Radiotherapy Dose Escalation |
Glioblastoma Astrocytoma Glioma Neoplasms, Neuroepithelial Neuroectodermal Tumors Neoplasms, Germ Cell and Embryonal Neoplasms by Histologic Type Neoplasms |
Neoplasms, Glandular and Epithelial Neoplasms, Nerve Tissue Temozolomide Antineoplastic Agents, Alkylating Alkylating Agents Molecular Mechanisms of Pharmacological Action Antineoplastic Agents |