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Depatuxizumab mafodotin

Phase 3

Glioblastoma | Small molecule | Oncology |AbbVie Inc.|Last Updated: May 11, 2023

Success Probability

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials2
Total Enrollment957

FDA Designations

No designations recorded

Clinical trial landscape

Depatuxizumab mafodotin · 2 trials · 2 indications

Phase 3 1Phase 2 1
NCT02573324A Study of ABT-414 in Participants With Newly Diagnosed Glioblastoma (GBM) With Epidermal Growth Factor Receptor (EGFR) AmplificationGlioblastoma
COMPLETED691 Analytics
PHASE3COMPLETED
A Study of ABT-414 in Participants With Newly Diagnosed Glioblastoma (GBM) With Epidermal Growth Factor Receptor (EGFR) Amplification
GlioblastomaUnlock trial analytics

Study Endpoints

Primary Endpoints

Overall Survival (OS)
Overall median duration of follow-up was 15.5 months (range: 0.1, 35.6).

Time to OS is defined as the number of days from the date of randomization to the date of death due to any cause.

Adult Study: Overall Survival (OS)
From the date of randomization up to the date of participant's death; participants who completed treatment were to be assessed every 12 weeks, up to 28 months.

Overall Survival (OS) was defined as time from randomization to death due to any cause, regardless of whether the event occurred on or off study drug (depatuxizumab mafodotin/temozolomide/lomustine).

Adult Study: Progression-Free Survival (PFS)
Measured every 8 weeks from date of randomization until the date of first objective progression or subject's death, whichever occurred first, up to 2 years

Progression-free survival was assessed per response assessment in neuro-oncology criteria (RANO) criteria and assessed by an independent review committee and was defined as the length of time during and after the treatment of a disease, that the participant lived with the disease but did not get worse.

Pediatric Study: Percentage of Participants With Adverse Events From the First Visit Until 49 Days After the Last Dose of Study Drug
From participant's first visit until 49 days after the participant's last dose of study drug, up to 63 weeks

The severity of each adverse event was rated according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE Version 4.0)

Pediatric Study: Maximum Observed Serum Concentration (Cmax) of ABT-414
Samples collected Cycle 1 Days 1, 2,3,5,8,15; Cycle 2 Day 1; Cycle 3 Day 1; Cycle 5 Day 1; Day 1 of every two cycles starting with Cycle 5; and 35 days after the last dose

Cmax is the peak concentration that a drug achieves in a specified compartment after the drug has been administrated and before administration of a second dose.

Pediatric Study: Maximum Observed Plasma Concentration (Cmax) of Cys-mcMMAF
Samples collected Cycle 1 Days 1, 2, 3, 5, 8

Cmax is the peak concentration that a drug or drug metabolite achieves in a specified compartment after the drug has been administrated and before administration of a second dose. Cys-mcMMAF is a toxic metabolite of depatuxizumab mafodotin.

Pediatric Study: Half-life (t1/2) Observed for ABT-414
Samples collected Cycle 1 Days 1, 2,3,5,8,15; Cycle 2 Day 1; Cycle 3 Day 1; Cycle 5 Day 1; Day 1 of every two cycles starting with Cycle 5; and 35 days after the last dose

Half-life is the calculated time it takes for half of the drug to leave the body.

Pediatric Study: Half-life (t1/2) Observed for Cys-mcMMAF
Samples collected Cycle 1 Days 1, 2, 3, 5, 8

Half-life is the calculated time it takes for half of the drug or drug metabolite to leave the body. CysmcMMAF is a toxic metabolite of depatuxizumab mafodotin.

Pediatric Study: Area Under the Concentration-time Curve (AUC) Observed for ABT-414
Samples collected Cycle 1 Days 1, 2,3,5,8,15; Cycle 2 Day 1; Cycle 3 Day 1; Cycle 5 Day 1; Day 1 of every two cycles starting with Cycle 5; and 35 days after the last dose

AUC is a measure of how long and how much drug is present in the body after dosing. The AUC of depatuxizumab mafodotin (ABT-414) in the pediatric population was measured following treatment to confirm that this was comparable to adults, and that the dosing levels are appropriate for a pediatric population.

Pediatric Study: Area Under the Concentration-time-curve (AUC) Observed for Unconjugated Cys-mcMMAF
Samples collected Cycle 1 Days 1, 2, 3, 5, 8

AUC is a measure of how long and how much drug or drug metabolite is present in the body after dosing. The AUC of Cys-mcMMAF, a toxic metabolite of depatuxizumab mafodotin, in the pediatric population was measured following treatment to confirm that this was comparable to adults, and that the dosing levels are appropriate for a pediatric population.

Secondary Endpoints

OS for the O6-methylguaninemethlytransferese (MGMT) Unmethylated Group
Overall median duration of follow-up was 15.5 months (range: 0.1, 35.6).
OS for the MGMT Methylated Group
Overall median duration of follow-up was 15.5 months (range: 0.1, 35.6).
OS for the Epidermal Growth Factor Receptor (EGFR)vIII-Mutated Tumor Subgroup
Overall median duration of follow-up was 15.5 months (range: 0.1, 35.6).
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Depatuxizumab Mafodotin, Radiation and Temozolomide (TMZ)EXPERIMENTALDepatuxizumab mafodotin is given on Day 1 of Week 1, 3 and 5 along with the standard therapy of TMZ and radiation during the chemoradiation phase. Depatuxizumab mafodotin is given on Day 1 and 15 of each cycle along with TMZ (Days 1-5 of each cycle) per standard of care during the adjuvant phase.
Placebo, Radiation and TMZPLACEBO_COMPARATORPlacebo is given on Day 1 of Week 1, 3 and 5 along with the standard therapy of TMZ and radiation during the chemoradiation phase. Placebo is given on Day 1 and 15 of each cycle along with TMZ (Days 1-5 of each cycle) per standard of care during the adjuvant phase.
Open-Label Sub-Study: Depatuxizumab Mafodotin, Radiation and TMZEXPERIMENTALDepatuxizumab mafodotin is given to participants with hepatic impairment on Day 1 of Week 1, 3 and 5 along with the standard therapy of TMZ and radiation during the chemoradiation phase. Depatuxizumab mafodotin is given on Day 1 and 15 of each cycle along with TMZ (Days 1-5 of each cycle) per standard of care during the adjuvant phase.
ABT-414/temozolomideEXPERIMENTALDepatuxizumab mafodotin (ABT-414) administered once every 2 weeks in combination with temozolomide (TMZ) to adult participants
ABT-414_adultEXPERIMENTALDepatuxizumab mafodotin (ABT-414) administered once every 2 weeks to adult participants
Control_lomustineACTIVE_COMPARATORAdult participants relapsing during temozolomide (TMZ) treatment or within the first 16 weeks after the first day of the last TMZ cycle received lomustine on Day 1 of every 42-day treatment period until one of the treatment withdrawal criteria was met, up to a maximum of 1 year.
Control_ temozolomideACTIVE_COMPARATORAdult participants relapsing 16 weeks or more after the first day of the last temozolomide (TMZ) cycle received TMZ on Day 1 to Day 5 for the first 28-day cycle, with dose escalation in subsequent cycles in case of adequate tolerance and treatment continuing until one of the treatment withdrawal criteria was met.
ABT-414_ pediatricEXPERIMENTALDepatuxizumab mafodotin (ABT-414) administered once every 2 weeks to pediatric participants. Temozolomide (TMZ) was only allowed for pediatric participants if its use was in accordance with local clinical practice, and was not considered an investigational product for the study (unless this was a local requirement).

Interventions

NameTypeDescription
TemozolomideDRUGOral Capsule
Depatuxizumab mafodotinDRUGIntravenous (IV) Infusion
RadiationRADIATION -
Placebo for ABT-414DRUGIV Infusion (IV)
LomustineDRUGCapsules administered orally, 110 mg/m\^2 on Day 1 of every 42-day treatment period. Treatment continued until one of the treatment withdrawal criteria was met, for a maximum of one year.
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Eligibility Criteria

Age Range18 Years to 99 Years
SexALL
Healthy VolunteersNo
Study Sites212

Inclusion Criteria: * Must have a clinical diagnosis of glioblastoma (GBM). * Must have a confirmed epidermal growth factor receptor amplification in tumor tissue. * Must have a Karnofsky Performance Status (KPS) \>= 70 at assessment \<= 14 days prior to randomization (N/A to the sub-study). * Must...

Countries:United StatesArgentinaAustraliaAustriaBelgiumBrazilCanadaChinaColombiaCzechiaFranceGermanyHong KongIrelandIsraelItalyMexicoNetherlandsNew ZealandPortugalRussiaSingaporeSouth AfricaSouth KoreaSpainSwitzerlandTaiwanUnited KingdomFinlandHungaryPoland
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Frequently asked questions about Depatuxizumab mafodotin

What is Depatuxizumab mafodotin used for in glioblastoma?

Depatuxizumab mafodotin is an investigational drug being studied for the treatment of glioblastoma, a type of brain cancer. It is being evaluated in patients with newly diagnosed glioblastoma with EGFR amplification and in those with recurrent glioblastoma. The drug is still in clinical development and has not been approved by regulatory authorities.

What does Depatuxizumab mafodotin target?

Depatuxizumab mafodotin targets the epidermal growth factor receptor (EGFR), which is amplified in some glioblastoma tumors. By binding to EGFR, the drug aims to deliver a cytotoxic agent to cancer cells. This mechanism is being studied in clinical trials for patients with EGFR-amplified glioblastoma.

Who makes Depatuxizumab mafodotin?

Depatuxizumab mafodotin is being developed by AbbVie Inc., a biopharmaceutical company traded on the New York Stock Exchange under the ticker ABBV. AbbVie is conducting clinical trials to evaluate the drug's safety and efficacy in patients with glioblastoma.

What phase is Depatuxizumab mafodotin in?

Depatuxizumab mafodotin has completed Phase 3 clinical development. It was studied in a Phase 3 trial for newly diagnosed glioblastoma with EGFR amplification and in a Phase 2 trial for recurrent glioblastoma. Both trials are completed, and the drug remains investigational, not approved for commercial use.

What clinical trials is Depatuxizumab mafodotin in?

Depatuxizumab mafodotin has been studied in two completed clinical trials. NCT02573324 was a Phase 3 trial in 691 participants with newly diagnosed glioblastoma or gliosarcoma with EGFR amplification. NCT02343406 was a Phase 2 trial in 266 participants with recurrent glioblastoma, comparing the drug alone or with temozolomide against lomustine or temozolomide.

Is Depatuxizumab mafodotin the same as ABT-414?

Yes, Depatuxizumab mafodotin is also known as ABT-414. Clinical trial records refer to the drug as ABT-414, and both names refer to the same investigational compound being developed by AbbVie for glioblastoma.