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Lomustine

Phase 2

Glioblastoma | Small molecule | Oncology |Adaptive Biotechnologies Corporation|Last Updated: Jun 3, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedACTIVE_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment2,250
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT03970447A Trial to Evaluate Multiple Regimens in Newly Diagnosed and Recurrent GlioblastomaPHASE2 RECRUITING 2,250Jul 30, 2019Jun 1, 2030Jun 3, 202663 United States, Australia +4
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Study Endpoints
Primary Endpoints
Overall Survival (OS)
From date of randomization until the date of death from any cause, or until 12 months following last patient randomization (approximately 2 years), whichever comes first.

Overall survival is defined from the time of randomization to death from any cause. Patients still alive at the time of an analysis will be considered censored at their date of last contact.

Secondary Endpoints
Progression-free survival (PFS)
From date of randomization to date of clinically determined progression or date of death from any cause, or until 12 months following last patient randomization (approximately 2 years), whichever comes first.
Tumor Response
From initiation of study treatment to date of disease progression, or until 12 months following last patient randomization (approximately 2 years), whichever comes first.
Duration of Response (CR + PR)
From date of response to date of clinically determined disease progression or date of death from any cause, or until 12 months following last patient randomization (approximately 2 years), whichever comes first.
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Control ArmACTIVE_COMPARATORNewly Diagnosed GBM: Radiation therapy (XRT) 60 Gy for 6 weeks. Temozolomide 75 mg/m2 orally daily during radiation therapy. Rest Period 2-6 weeks from the last day of radiation, and the start of the first cycle of Maintenance Therapy 2-6 weeks after the last day of radiotherapy. The start of all subsequent maintenance therapy cycles (2-12) every 4 weeks + 7 days after the first daily dose of temozolomide of the preceding cycle. Total number of cycles should comply with institutional or country standards. During maintenance therapy, the first cycle of temozolomide will be at 150 mg/m2 for Days 1-5 of a 28-day cycle. Second and subsequent cycles of maintenance therapy will be at 200 mg/m2 for Days 1-5 of a 28-day cycle. Recurrent GBM: Lomustine started at 110 mg/m2/day on Day 1 of a 42-day cycle as per local standards. Treatment will continue for up to 6 total cycles.
Regorafenib Treatment Arm- Enrollment concludedEXPERIMENTALNewly Diagnosed MGMT Unmethylated GBM: XRT 60 Gy for 6 weeks. Temozolomide 75 mg/m2 orally daily during radiation therapy. Rest Period 4 weeks from the last day of radiation. Maintenance period: Regorafenib (Dosage Form: Tablet for oral administration; Strength: 40 mg) 160 mg orally (PO) every day (QD) for 3 weeks of every 4 week cycle (i.e., 3 weeks on, 1 week off). Recurrent GBM: Regorafenib (Dosage Form: Tablet for oral administration; Strength: 40 mg) 160 mg orally (PO) every day (QD) for 3 weeks of every 4 week cycle (i.e., 3 weeks on, 1 week off).
Paxalisib Treatment Arm- Enrollment concludedEXPERIMENTALNewly Diagnosed MGMT Unmethylated GBM: XRT 60 Gy for 6 weeks. Temozolomide 75 mg/m2 orally daily during radiation therapy. Rest Period 4 weeks from the last day of radiation. Maintenance period: Paxalisib (Dosage Form: Tablet for oral administration; Strength: 15 mg per tablet) 45 mg orally (PO) every day for 28 days for the first cycle. If tolerated, increase dose to 60 mg orally (PO) every day for 28 days for all subsequent cycles. Recurrent GBM: Paxalisib (Dosage Form: Tablet for oral administration; Strength: 15 mg per tablet) 45 mg orally (PO) every day for 21 days for the first cycle. If tolerated, increase dose to 60 mg orally (PO) every day for 21 days for all subsequent cycles.
VAL-083 Treatment Arm- Enrollment concludedEXPERIMENTALNewly Diagnosed MGMT Methylated and Unmethylated GBM: XRT 60 Gy for 6 weeks. Temozolomide 75 mg/m2 orally daily during radiation therapy. Rest Period 4 weeks from the last day of radiation. Maintenance period: VAL-083 (Dosage Form: Infusion for intravenous administration; Strength: 30 mg/m2) on Day 1, 2 and 3 of 21-day cycle. Recurrent GBM: VAL-083 (Dosage Form: Infusion for intravenous administration; Strength: 30 mg/m2) on Day 1, 2 and 3 of 21-day cycle.
VT1021 Treatment Arm - Dose Finding PhaseEXPERIMENTALNewly diagnosed MGMT Methylated and Unmethylated GBM: Rolling 6 design. Treatment as outlined in section "Experimental: VT1021 Treatment Arm" with the first 6 patients receiving VT1021 at 12 mg/kg twice weekly in combination with temozolomide and radiation therapy. If there are two dose limiting toxicities reported, the dose will be de-escalated to 9 mg/kg two times a week. 6 patients will then be receiving 9 mg/kg two times a week and observed for DLTs for 4 weeks. Recurrent GBM: Dose Finding Phase is not applicable for patients with Recurrent GBM in the VT1021 treatment arm.
VT1021 Treatment Arm - Enhanced Safety Management (ESM)EXPERIMENTALExperimental: VT1021 Treatment Arm - Enhanced Safety Management (ESM) Newly diagnosed MGMT Methylated and Unmethylated GBM: Supplemental safety assessments including bi-weekly collection of adverse events, dose modification profile, hematology, serum chemistry and coagulation panels. PK and PD assessments are done for patients as a part of ESM. ESM will continue until the Data Safety Monitoring Board (DSMB) suspends collection of additional data. Recurrent GBM: ESM is not applicable for patients with Recurrent GBM in the VT1021 treatment arm.
VT1021 Treatment ArmEXPERIMENTALNewly diagnosed MGMT Methylated and Unmethylated GBM: XRT 60 Gy for 6 weeks. Temozolomide 75 mg/m2 orally daily and VT1021 (Dosage Form: Infusion for intravenous administration; Strength: 10 mg/mL; Dose: As confirmed through the dose finding phase) twice weekly during radiation therapy. Rest period: 2-6 weeks from last day of radiation. VT1021 dosing will continue during the rest period. Maintenance period: The first cycle of temozolomide will be at 150 mg/m2 for days 1-5 of a 28-day cycle. Second and subsequent cycles of maintenance therapy will be at 200 mg/m2 for days 1-5 of a 28-day cycle. Temozolomide will be administered for up to 6 cycles in the maintenance phase in combination with VT1021. After 6 cycles, VT1021 only. Recurrent GBM: VT1021 (Dosage Form: Infusion for intravenous administration; Strength: 10 mg/mL; Dose: 12mg/kg) twice weekly.
Troriluzole Treatment Arm - Dose Finding PhaseEXPERIMENTALNewly diagnosed MGMT Methylated and Unmethylated GBM: Rolling 6 design. The first 6 patients will receive troriluzole at 100 mg BID for the first two weeks followed by 200 mg BID for the next two weeks in combination with temozolomide and radiation therapy. If there are two dose limiting toxicities (DLTs) reported, the dose will be de-escalated to 100 mg in the morning and followed by 200 mg in the evening. 6 patients will receive this dose and observed for 4 weeks. If there are two DLTs reported, then this dose will be de-escalated to 100 mg BID. 6 patients will then be receiving this dose and observed for DLTs for 4 weeks. Recurrent GBM: Rolling 6 design. The first 6 patients receiving troriluzole 100 mg twice a day (BID) for the first two weeks followed by 200 mg BID for the next two weeks in combination with lomustine. The dose de-escalation is similar to that of newly diagnosed patients during the rolling 6 design.
Troriluzole Treatment Arm - Enhanced Safety Management (ESM)EXPERIMENTALNewly diagnosed MGMT Methylated and Unmethylated GBM and Recurrent GBM: Supplemental safety assessments including bi-weekly collection of adverse events, dose modification profile, hematology, serum chemistry and coagulation panels. ESM will continue until the Data Safety Monitoring Board (DSMB) suspends collection of additional data.
Troriluzole Treatment ArmEXPERIMENTALNewly diagnosed MGMT Methylated and Unmethylated GBM: XRT 60 Gy for 6 weeks. Temozolomide 75 mg/m2 orally daily and troriluzole (Dosage Form: Capsule for oral administration; Strength: 100 mg; Dose: As confirmed by dose finding phase) BID. Rest period: 2-6 weeks from last day of radiation. Troriluzole dosing will continue during the rest period. Maintenance period: The first cycle of temozolomide will be at 150 mg/m2 for days 1-5 of a 28-day cycle. Second and subsequent cycles of maintenance therapy will be at 200 mg/m2 for days 1-5 of a 28-day cycle. Temozolomide will be administered for up to 6 cycles in the maintenance phase in combination with troriluzole. After 6 cycles, troriluzole only. Recurrent GBM: Lomustine 100 mg/m2 orally on day 1 of a 42-day cycle in combination with troriluzole (Dosage Form: Capsule for oral administration; Strength: 100 mg; Dose: As confirmed by dose finding phase) BID. After 6 cycles, troriluzole only.
ADI-PEG 20 Treatment Arm - Dose Finding PhaseEXPERIMENTALNewly diagnosed MGMT Methylated and Unmethylated GBM: Dose Finding Phase is not applicable for newly diagnosed patients on the ADI-PEG 20 treatment arm. Recurrent GBM: Rolling 6 design. The first 6 patients will receive ADI-PEG 20 at 36 mg/m2 once a week in combination with lomustine 100 mg/m2 orally on day 1 of a 42-day cycle. 6 patients will receive this dose and be observed for 4 weeks. If there are two dose limiting toxicities (DLTs) reported, the dose will be de-escalated to 18 mg/m2 once a week. 6 patients will receive this dose and be observed for 4 weeks.
ADI-PEG 20 Treatment Arm - Enhanced Safety Management (ESM)EXPERIMENTALNewly diagnosed MGMT Methylated and Unmethylated GBM: ESM is not applicable for newly diagnosed patients on the ADI-PEG 20 treatment arm. Recurrent GBM: Supplemental safety assessments including bi-weekly collection of adverse events, dose modification profile, hematology, serum chemistry and coagulation panels. ESM will continue until the Data Safety Monitoring Board (DSMB) suspends collection of additional data.
ADI-PEG 20 Treatment ArmEXPERIMENTALNewly diagnosed MGMT Methylated and Unmethylated GBM: XRT 60 Gy over 6 weeks. Temozolomide (75 mg/m2 orally daily and ADI-PEG 20 (Dosage Form: Solution for intramuscular injection; Strength: 11.5 ± 1.0 mg/ml; Dose: 36 mg/m2) once a week. Rest period: 2-6 weeks from last day of radiation. ADI-PEG 20 dosing will continue during rest period. Maintenance period: The first cycle of temozolomide will be at 150 mg/m2 for days 1-5 of a 28-day cycle. Subsequent cycles will be at 200 mg/m2 for days 1-5 of a 28-day cycle. Temozolomide will be administered for up to 6 cycles in the maintenance phase in combination with ADI-PEG 20. After 6 cycles, ADI-PEG 20 only for up to 104 weeks of total treatment. Recurrent GBM: Lomustine 100 mg/m2 orally on day 1 of a 42-day cycle in combination with ADI-PEG 20 (Dosage Form: Solution for IM injection; Strength: 11.5 ± 1.0 mg/ml; Dose: As confirmed by dose finding phase, once a week. After 6 cycles, ADI-PEG 20 only for up to 104 weeks of total treatment.
AZD1390 Treatment ArmEXPERIMENTALNewly Diagnosed MGMT Methylated and Unmethylated GBM: XRT 60 Gy for 6 weeks in combination with AZD1390 given on days of radiation followed by 14 days with daily AZD1390. Rest Period 2-4 weeks from the last day of AZD1390. The first cycle of temozolomide will be at 150 mg/m2 for days 1-5 of a 28-day cycle. Second and subsequent cycles of maintenance therapy will be at 200 mg/m2 for days 1-5 of a 28-day cycle, if there is no toxicity. Temozolomide will be administered for up to 6 cycles in the maintenance phase.
Tinostamustine - Dose finding phaseEXPERIMENTALNewly diagnosed MGMT Methylated and Unmethylated GBM: Tinostamustine Dosage Form: Infusion for intravenous administration; Rolling 6 design. Treatment as outlined in "Investigational: Tinostamustine Treatment Arm" with the first 6 patients receiving Tinostamustine at 80 mg/m2 over 60 minutes with two potential dose de-escalations. If there are two or more dose limiting toxicities at the tested dose, subsequent patients will be enrolled at the next lower dose level (60 mg/m2 and subsequently to 40 mg/m2). Recurrent GBM: Rolling 6 design. Tinostamustine Dosage Form: Infusion for intravenous administration; Strength: Starting dose 80 mg/m2 on Day 1 of 21-day cycle for up to 12 cycles. The first 6 patients will receive Tinostamustine at 80 mg/m2 over 60 minutes with two potential dose de-escalations if there are two or more dose limiting toxicities at the tested dose, subsequent patients will be enrolled at the next lower dose level (60 mg/m2 and subsequently to 40 mg/m2).
Tinostamustine - Enhanced Safety ManagementEXPERIMENTALNewly diagnosed MGMT Methylated and Unmethylated GBM: Treatment as outlined in "Investigational: Tinostamustine Treatment Arm". Dose as determined by the dose finding phase. Recurrent GBM: Tinostamustine (Dosage Form: Infusion for intravenous administration; Strength: as determined though the dose finding phase on Day 1 of 21-day cycle for up to 12 cycles.
Investigation arm: TinostamustineEXPERIMENTALNewly diagnosed MGMT Methylated and Unmethylated GBM: XRT total of 60 Gy (2 Gy/fraction) over 6 weeks. Temozolomide 75 mg/m2 orally daily during radiation therapy. Rest Period 2-6 weeks from the last day of radiation. Tinostamustine treatment period: Tinostamustine (Dosage Form: Infusion for intravenous administration; Strength: as determined though the dose finding phase) on Day 1 of 21-day cycle for up to 12 cycles.
Interventions
NameTypeDescription
TemozolomideDRUGDosage Form: Capsule for oral administration Strengths: 5 mg, 20 mg, 100 mg, 140 mg, 180 mg, or 250 mg
LomustineDRUGDosage Form: Capsule for oral administration Strength: 5 mg, 10 mg, 40 mg, and 100 mg
RegorafenibDRUGDosage Form: Tablet for oral administration Strength: 40 mg Standard Regimen: 160 mg orally (PO) every day (QD) for 3 weeks of every 4 week cycle (i.e., 3 weeks on, 1 week off)
RadiationRADIATION60 Gy
PaxalisibDRUGDosage Form: Tablet for oral administration Strength: 15 mg Standard Regimen: 45 mg orally (PO) every day for 28 days for the first cycle. If tolerated, increase dose to 60 mg orally (PO) every day for 28 days for all subsequent cycles
VAL-083DRUGDosage Form: Infusion for intravenous administration Strength: 40 mg per vial Standard Regimen: 30 mg/m2 on Day 1, 2 and 3 of 21-day cycle. The drug is available in powder form. It is reconstituted with 5 mL of 0.9% Sodium Chloride for Injection, USP. This will produce a solution of 40 mg VAL-083 in 5 mL. The required volume of reconstituted VAL-083 for the patient is then calculated at the rate of 30 mg/m2. The corresponding volume is further diluted into 250 mL of 0.9% Sodium Chloride for Injection, USP, prior to intravenous administration.
VT1021DRUGDosage Form: Infusion for intravenous administration Strength: 10 mg/mL Standard Regimen Newly Diagnosed: Dose as confirmed through the dose finding phase, administered twice weekly (Mon and Thurs or Tues and Fri or Mon and Fri). Standard Regimen Recurrent: 12 mg/kg administered twice weekly (Mon and Thurs or Tues and Fri or Mon and Fri). The drug is available as a sterile solution of the acetate salt formulated with phosphate-buffered saline, mannitol, and 2.5% polysorbate 80. The required volume stock solution for the patient is calculated. The corresponding volume is diluted in 500 mL of either 0.9% saline or D5W, prior to intravenous administration.
TroriluzoleDRUGDosage Form: Capsule for oral administration Strength: 100 mg Standard Regimen: Dose as confirmed through the dose finding phase orally BID.
ADI-PEG 20BIOLOGICALDosage Form: Solution for intramuscular injection Strength: 11.5 ± 1.0 mg/ml Standard Regimen: For newly diagnosed patients, 36mg/m2. For recurrent disease patients, dose as confirmed through the dose finding phase intramuscularly once a week
AZD1390DRUGStandard Regimen Newly Diagnosed: Given once daily on days of radiation and once daily for 14 consecutive days after completion of radiation.
TinostamustineDRUGDosage form: Reconstituted powder for intravenous administration Strength: 2mg/mL Standard Regimen: Dose as confirmed through the dose finding phase, on Day 1 of 21-day cycle for up to 12 cycles in the maintenance phase.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites63

Newly Diagnosed Inclusion Criteria: * Age ≥ 18 years. * Histologically confirmed Grade IV GBM, inclusive of gliosarcoma (WHO criteria; IDH wild-type by immunohistochemistry \[IHC\] or sequencing for IDH) established following either a surgical resection or biopsy. An MRI scan with the required imag...

Countries:United StatesAustraliaCanadaFranceGermanySwitzerland
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Recent Changes (Last 90 Days)
LOWJun 3, 2026NCT03970447lastUpdatePostDate: changed
LOWJun 3, 2026NCT03970447lastUpdatePostDate: changed
MEDIUMMay 26, 2026NCT03970447Enrollment: 1280 → 2250
LOWMay 24, 2026NCT03970447studyFirstPostDate: changed