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ERAS-801

Phase 1

Glioblastoma Multiforme | Small molecule | Oncology |Erasca, Inc.|Last Updated: Aug 17, 2025

Target and mechanism

Molecular targetEGFR
Target classProtein
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMC
Total Trials1
Total Enrollment52

FDA Designations

FAST_TRACKORPHAN_DRUG

Clinical trial landscape

ERAS-801 · 1 trial · 1 indication

Phase 1 1
NCT05222802A Study to Evaluate ERAS-801 in Patients With Recurrent Glioblastoma (THUNDERBBOLT-1)Glioblastoma Multiforme
ACTIVE NOT_RECRUITING52 Analytics
PHASE1ACTIVE NOT_RECRUITING
A Study to Evaluate ERAS-801 in Patients With Recurrent Glioblastoma (THUNDERBBOLT-1)
Glioblastoma MultiformeUnlock trial analytics

Study Endpoints

Primary Endpoints

Dose Limiting Toxicities (DLT)
Study Day 1 up to Day 29

Based on adverse events observed during dose escalation

Maximum Tolerated Dose (MTD)
Study Day 1 up to Day 29

Based on adverse events observed during dose escalation

Recommended Dose (RD)
Study Day 1 up to Day 29

Based on adverse events observed during dose escalation

Adverse Events
Assessed up to 24 months from time of first dose

Incidence and severity of treatment-emergent AEs and serious AEs

Secondary Endpoints

Plasma concentration (Cmax)
Study Day 1 up to Day 29
Time to achieve Cmax (Tmax)
Study Day 1 up to Day 29
Area under the curve
Study Day 1 up to Day 29
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Dose Escalation (Part 1)EXPERIMENTALERAS-801 will be orally administered to study participants with recurrent GBM in sequential ascending doses until unacceptable toxicity, disease progression, or withdrawal of consent.
Dose Expansion (Part 2)EXPERIMENTALERAS-801 will be orally administered at the recommended dose (as determined from Part 1) to study participants with recurrent GBM harboring alterations in EGFR.

Interventions

NameTypeDescription
ERAS-801DRUGAdministered orally
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Eligibility Criteria

Age Range18 Years to 99 Years
SexALL
Healthy VolunteersNo
Study Sites8

Inclusion Criteria: * Age ≥ 18 years * Willing and able to give written informed consent * Diagnosis of Glioblastoma, IDH WT as defined by the WHO 2021 criteria * Adequate organ function * Willing to comply with all protocol-required visits, assessments, and procedures * Able to swallow oral medica...

Countries:United States
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Frequently asked questions about ERAS-801

What is ERAS-801 used for in Glioblastoma Multiforme?

ERAS-801 is an investigational small molecule being studied for the treatment of Glioblastoma Multiforme (GBM), a type of brain cancer. It is currently in Phase 1 clinical development and has not yet been approved by the FDA. The drug is being evaluated in patients with recurrent GBM.

What does ERAS-801 target?

ERAS-801 targets EGFR, a protein that can drive tumor growth when mutated or overexpressed. By inhibiting EGFR, the drug aims to block signals that promote cancer cell proliferation. This mechanism is being explored in the context of Glioblastoma Multiforme, where EGFR alterations are common.

Who makes ERAS-801?

ERAS-801 is being developed by Erasca, Inc., a biopharmaceutical company traded on NASDAQ under the ticker ERAS. The company is conducting clinical trials to evaluate the drug's safety and efficacy in patients with recurrent Glioblastoma Multiforme.

What phase is ERAS-801 in?

ERAS-801 is in Phase 1 clinical development. It is an investigational drug, meaning it has not received FDA approval and is still being tested in clinical trials. The drug has been granted Fast Track and Orphan Drug designations by the FDA for its potential use in Glioblastoma Multiforme.

What clinical trials is ERAS-801 in?

ERAS-801 is being studied in a Phase 1 clinical trial with the identifier NCT05222802, titled 'A Study to Evaluate ERAS-801 in Patients With Recurrent Glioblastoma (THUNDERBBOLT-1)'. This trial is active but not recruiting, with an enrollment of 52 participants in the United States.

Is ERAS-801 the same as THUNDERBBOLT-1?

No, ERAS-801 is the drug being studied, while THUNDERBBOLT-1 is the name of the clinical trial evaluating it. The trial, identified as NCT05222802, is a Phase 1 study in patients with recurrent Glioblastoma Multiforme. The drug itself is a small molecule targeting EGFR.