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Lomustine With and Without Reirradiation for First Progression of Glioblastoma: a Randomized Phase III Study

Lomustine With and Without Reirradiation for First Progression of Glioblastoma: a Randomized Phase III Study

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05904119
Acronym
LEGATO
Enrollment
411
Registered
2023-06-15
Start date
2024-03-15
Completion date
2028-02-01
Last updated
2026-06-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

First Progression of Glioblastoma

Keywords

First progression, Glioblastoma, Phase III, Lomustine, Reirradiation

Brief summary

Despite comprehensive multimodal treatment of newly diagnosed glioblastoma, almost all patients suffer from tumour relapse. Currently, no standard of care exists to treat these tumour relapses. Treatment options include repeated surgery (if feasible), systemic therapy (bevacizumab, lomustine, temozolomide re-challenge), reirradiation and best supportive care. Currently, the superiority of combined chemoradiation versus chemotherapy alone remains unproven. Given that lomustine is the standard chemotherapeutic agent for the treatment of recurrent glioblastoma in Europe and the unclear efficacy of reirradiation, we want to explore whether combining lomustine and reirradiation may be a better treatment than lomustine alone. The results of the prospective randomized trial proposed here should demonstrate a significant improvement in overall survival when lomustine is combined with reirradiation in patients with recurrent glioblastoma compared to lomustine alone without adversely affecting quality of survival. The trial will be stopped based on overall survival in a preplanned futility and efficacy interim analysis.

Interventions

DRUGLomustine

Oral administration of Lomustine

RADIATIONReirradiation

Given at least 6 months after the end of prior radiotherapy

Sponsors

European Organisation for Research and Treatment of Cancer - EORTC
Lead SponsorNETWORK
Swiss Cancer Institute
CollaboratorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Before patient's enrolment, written informed consent must be given according to ICH/GCP, and national/local regulations. * Patients with first progression or recurrent glioblastoma after standard chemoradiotherapy (any treatment other than use of nitroureas) having occurred at least 6 months after the end of prior radiotherapy * Measurable disease according to RANO criteria with a maximum tumour diameter of 5 cm (local investigator assessment) * In case of surgery for recurrence: fully recovered from surgery, confirmation of recurrence by histology, and patient fit for treatment as per local investigator assessment. * Histologically proven diagnosis of glioblastoma, IDH wildtype per WHO 2021 classification and local assessment of tissue from diagnosis or recurrence * Initial treatment of newly diagnosed glioblastoma by maximal safe resection and postsurgical concurrent conventionally fractionated or abbreviated (minimum 15 fractions) chemoradiotherapy with or without maintenance chemotherapy with temozolomide (patient must have received at least one dose) * Stable or decreasing dose of steroids for 7 days prior to enrolment * Age ≥ 18 years * WHO Performance status of 0-2 * Women of childbearing potential (WOCBP) must have a negative serum pregnancy test within 7 days prior to the first dose of study treatment. * Patients of childbearing / reproductive potential must agree to use adequate birth control measures during the study treatment period and for at least 6 months after the last dose of study treatment. A highly effective method of birth control is defined as a method which results in a low failure rate (i.e., less than 1% per year) when used consistently and correctly. * Female subjects who are breast feeding should discontinue nursing prior to the first dose of study treatment and until 6 months after the last study treatment. * Non-sterile males must use contraception during treatment and for 6 months after the last dose. * Non-sterile males must avoid sperm donation for the duration of the study and for at least 6 months after the last dose of study treatment.

Exclusion criteria

* Any prior anticancer treatment for recurrent glioblastoma (except surgery) * Significant reduction in thrombocyte and/or leukocyte counts as well as severe renal impairment according to investigator's opinion * History or present acute leukaemia or any myeloid disease * Known hypersensitivity to the active components or excipients of lomustine * Known coeliac disease or wheat allergy * Live attenuated vaccine in the 3 months prior to lomustine initiation * Any serious or uncontrolled medical condition (e.g., infections, chronic alcoholism, drug addiction) or abnormality, in the judgment of the investigator that prohibits obtaining informed consent, safe participation and study completion * Known contraindication to imaging tracer or any product of contrast media and Magnetic Resonance Imaging (MRI) contraindications * Any psychological, familial, sociological or geographical condition potentially hampering compliance with the study protocol and follow-up schedule; those conditions should be assessed and discussed with the patient before the enrolment in the trial.

Design outcomes

Primary

MeasureTime frameDescription
Overall Survival (OS)From the date of enrolment up to the date of death, assessed up to 40 months after first patient is enrolledDefined as the number of days from date of enrolment to the date of death due to any cause

Secondary

MeasureTime frameDescription
Progression Free Survival (PFS)From the date of enrolment up to the date of first objective progression or the date of death whichever occur first, assessed up to 40 months after first patient is enrolledEvents are progressions based on Response Assessment in Neuro Oncology (RANO) criteria as determined by the local investigator .
Health-related Quality of Life (HRQoL)From the date of enrolment until disease progression, assessed up to 40 months after first patient is enrolledHRQoL will be assessed with the EORTC Quality of Life Questionnaire (QLQ-C30) version 3.
Toxicity profile of lomustine plus reirradiationFrom the date of enrolment until end of study treatment 30 (± 7 days) after last dose, assessed up to 40 months after first patient is enrolledSafety according to the CTCAE (NCI Common Terminology Criteria for Adverse Events) Version 5.0 for toxicity and Serious Adverse Event reporting.
Neurocognitive functioning of lomustine pus reirradiationFrom the date of enrolment until end of study treatment 30 (± 7 days) after last dose, assessed up to 40 months after first patient is enrolledNeurocognitive functioning assessed by Mini Mental State Examination (MMSE)
To transform self-reported quality of life data from the QLQ-C30 into health utility values, ready to be used in subsequent health economic analyses.From the date of enrolment until disease progression, assessed up to 40 months after first patient is enrolledA deterioration event is defined as ≥\>10-point worsening from baseline in the GHQ without further improvement (i.e., no subsequent ≥\>10 point improvement) or death due to any cause.
Objective response (ORR)From the date of enrolment up to the date of first objective progression or the date of death whichever occur first, assessed up to 40 months after first patient is enrolled
Complete response (CRR)From the date of enrolment up to the date of first objective progression or the date of death whichever occur first, assessed up to 40 months after first patient is enrolled

Countries

Austria, Belgium, Czechia, Denmark, France, Germany, Italy, Netherlands, Norway, Spain, Switzerland

Contacts

CONTACTEORTC
eortc@eortc.org+3227741611
PRINCIPAL_INVESTIGATORMatthias Preusser, Prof.

EORTC Study Coordinator

PRINCIPAL_INVESTIGATORGiuseppe Minniti, Dr.

EORTC Study Coordinator

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 9, 2026