ClinicalTrials.gg
RecruitingNCT07089641Updated Sep 18, 2026

ERAS-801 for the Treatment of Resectable and Progressive or Recurrent or Elderly Newly Diagnosed IDH Wildtype Grade IV Glioblastoma or Gliosarcoma With an EGFR Amplification or Mutation, ERAS801-SARG Trial

A Phase 1 interventional study of Biospecimen Collection and Echocardiography Test in Glioblastoma, Glioblastoma, IDH-Wildtype and Gliosarcoma, sponsored by Jonsson Comprehensive Cancer Center. Recruiting at 2 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-18.

Sponsored by Jonsson Comprehensive Cancer Center · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Started Jul 2025; still recruiting 1 year 3 months later.
Phase
Phase 1
Study type
Interventional
Enrollment
50
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Study summary

This phase Ib trial tests the safety and side effects of ERAS-801 in treating patients with isocitrate dehydrogenase (IDH) wildtype, epidermal growth factor receptor (EGFR) amplified or mutated grade IV glioblastoma or gliosarcoma that can be removed by surgery (resectable) and that is growing, spreading, or getting worse (progressive), that has come back after a period of improvement (recurrent) or that is newly diagnosed in an elderly patient. Glioblastoma is the most common brain cancer in adults and survival rates remain poor despite treatment including surgery, radiation and chemotherapy. EGFR is a protein found on the surface of some cells, to which epidermal growth factor binds, causing the cells to divide. It is found at abnormally high levels on the surface of many types of tumor cells, so these cells may divide excessively in the presence of epidermal growth factor. ERAS-801, an EGFR inhibitor that can penetrate the central nervous system, binds to the tumor cells that express EGFR and may help shrink or slow the growth of the tumor cells.

Read the detailed description

PRIMARY OBJECTIVE:

I. To evaluate the glucose utilization in the tumor from the glioblastoma patients treated with EGFR inhibitor ERAS-801 (ERAS-801). (Cohort A) II. To evaluate the changes in maximum concentration (Cmax) at dose optimized ERAS-801 correlating with corrected QT interval (QTc) prolongation. (Cohort B) III. To evaluate the tolerability and efficacy of ERAS-801 recommended phase 2 dose (RP2D) in patients ≥ 70 years of age with newly diagnosed glioblastoma. (Cohort C) IV. To evaluate the 6 month progression free survival (PFS6) and response rate (RR) of ERAS-801 in patients ≥ 70 years of age with newly diagnosed glioblastoma. (Cohort C)

SECONDARY OBJECTIVES:

I. To evaluate the pharmacokinetic (PK) profile in plasma, cerebrospinal fluid (CSF), and tumor tissue of ERAS-801 in recurrent glioblastomas. (Cohort A) II. To evaluate the pharmacodynamic (PD) impact of ERAS-801 treatment in recurrent glioblastomas. (Cohort A) III. To evaluate whether glycolytic index (GI) measured by fludeoxyglucose F-18 (FDG)-positron emission tomography (PET) and metabolic magnetic resonance imaging (MRI) correlates with clinical responses in recurrent glioblastomas treated with ERAS-801. (Cohort A) IV. To evaluate whether potential of hydrogen (pH)-weighted chemical exchange saturation transfer (CEST)-spin-and-gradient echo (SAGE)-echoplanar imaging (EPI) contrast measured by metabolic MRI correlates with clinical responses in recurrent glioblastomas treated with ERAS-801. (Cohort A) V. To evaluate the influence of ERAS-801 treatment on the apoptotic machinery in recurrent glioblastoma. (Cohort A) VI. To evaluate the safety and tolerability of ERAS-801 recommended phase 2 dose (RP2D) in recurrent glioblastoma. (Cohort A) VII. To evaluate the steady state of dose optimized ERAS 801. (Cohort B) VIII. To evaluate the pharmacokinetic (PK) profile in plasma of dose optimized ERAS-801 in recurrent glioblastomas. (Cohort B) IX. To evaluate the safety and tolerability of ERAS-801 optimized dosing in recurrent glioblastoma. (Cohort B) X. To evaluate the glucose utilization in the tumor from the glioblastoma patients treated with ERAS-801 at optimized dosing. (Cohort B) XI. To evaluate the pharmacokinetic (PK) profile in plasma of ERAS-801 in patients ≥ 70 years of age with newly diagnosed glioblastomas. (Cohort C) XII. To evaluate the glucose utilization in the tumor from the glioblastoma patients ≥ 70 years of age treated with ERAS-801. (Cohort C)

EXPLORATORY OBJECTIVES:

I. To evaluate the associations between exploratory biomarkers, clinical outcomes, and adverse events which include:

Ia. Estimating the efficacy of ERAS-801 through 6 month PFS6, progression free survival (PFS), and overall survival (OS) as defined by modified Response Assessment in Neuro-Oncology criteria (mRANO)/Response Assessment in Neuro-Oncology criteria (RANO) 2.0; Ib. Exploring whether glycolytic index (GI) and pH-weighted CEST-SAGE-EPI contrast correlates with clinical responses; Ic. Exploring whether there are alterations of key glycolytic enzymes and/or other transcriptional changes linked to EGFR occur with ERAS-801 treatment; Id. Exploring whether there are changes in percent of tumor cells that have immunohistochemical positive staining for the KI67 antigen after ERAS-801 treatment; Ie. Exploring the associations between the various biomarker evaluations (tissue and imaging), clinical outcome measures and adverse events. (Cohort A)

II. To evaluate the associations between exploratory biomarkers, clinical outcomes, and adverse events which include:

IIa. Estimating the efficacy of ERAS-801 at optimized dosing through PFS6, PFS, and OS as defined by mRANO/RANO 2.0; IIb. Exploring whether glycolytic index (GI) and pH-weighted CEST-SAGE-EPI contrast correlates with clinical responses; IIc. Exploring the associations between the various biomarker evaluations (tissue and imaging), clinical outcome measures and adverse events. (Cohort B)

III. To evaluate the associations between exploratory biomarkers, clinical outcomes, and adverse events which include:

IIIa. Estimating the efficacy of ERAS-801 through PFS, and OS as defined by mRANO/RANO 2.0; IIIb. Exploring whether glycolytic index (GI) and pH-weighted CEST-SAGE-EPI contrast correlates with clinical responses; IIIc. Exploring the associations between the various biomarker evaluations (tissue and imaging), clinical outcome measures and adverse events. (Cohort C)

OUTLINE: Patients are assigned to 1 of 3 cohorts.

COHORT A: Patients receive ERAS-801 orally (PO) once daily (QD) for 8-14 days prior to undergoing scheduled surgical resection. Starting no more than 28 days after surgery, patients then receive ERAS-801 PO QD on days 1-28 of each cycle. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients also undergo echocardiography (ECHO), urine and blood sample collection and brain MRI throughout the study. Additionally, patients undergo CSF sample collection at the time of surgery and FDG PET on study.

COHORT B: After first or second recurrence, patients receive ERAS-801 PO BID on days 1-28 of each cycle. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients also undergo ECHO, urine and blood sample collection and brain MRI and FDG-PET throughout the study.

COHORT C: Within 2-4 weeks of the last tumor surgery, newly diagnosed patients receive ERAS-801 PO BID on days 1-28 of each cycle. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients also undergo ECHO, urine and blood sample collection and brain MRI and FDG-PET throughout the study.

After completion of study treatment, patients are followed up at 30 days, then every 2 months up to documented disease progression, death, or the end of the study. Patients with disease progression are followed up every 3 months up to death, withdrawal of consent, or the end of the trial, whichever, occurs first.

02

Conditions studied

  • Glioblastoma
  • Glioblastoma, IDH-Wildtype
  • Gliosarcoma
  • Recurrent Glioblastoma, IDH-Wildtype
  • Recurrent Gliosarcoma
  • Resectable Glioblastoma
03

In context

Glioblastoma

2,132 studies on the registry are indexed under Glioblastoma; 464 are open to participants now.

This study's planned enrollment of 50 is above the median of 36 across 1,753 interventional studies indexed under Glioblastoma.

Browse Glioblastoma studies →

Lead sponsor

Jonsson Comprehensive Cancer Center is the lead sponsor of 398 studies on the registry; 66 are open to participants now.

Of its 38 completed or terminated interventional studies of FDA-regulated products, 2 (5%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

COHORT A:

  • Patients must be 18 years of age or older on the day of signing
  • Patients must have proven surgically accessible World Health Organization (WHO) grade IV glioblastoma/gliosarcoma, which is progressive or recurrent following radiation therapy +/- chemotherapy
  • Patient tumor sample must have wild type IDH with evidence of EGFR mutation/amplification by Clinical Laboratory Improvement Act (CLIA)-certified laboratory assay. Patients with EGFR mutations in T790M or exon 20 will be excluded
  • Patients may have had no more than two prior recurrences
  • Patient must be able to tolerate MRIs. Pre-study enrollment MRIs must be available for central review, including at least the immediate pre-progression scan and the scan demonstrating progression. Patients must have measurable, by RANO, supratentorial contrast-enhancing progressive or recurrent high-grade glioma by MRI imaging within 28 days prior to enrollment
  • Patients must have recovered from severe toxicity of prior therapy. The following intervals from previous treatments are required to be eligible:

    • 12 weeks from the completion of radiation
    • 6 weeks from a nitrosourea chemotherapy
    • 3 weeks from a non-nitrosourea chemotherapy
    • 4 weeks from any (not Food and Drug Administration [FDA]-approved) agents
    • 4 weeks from the last treatment with bevacizumab
    • 2 weeks from administration of a non-cytotoxic, FDA-approved agent other than bevacizumab (e.g., hydroxychloroquine, etc.)
    • 1 week from the tumor treating fields
  • Patients must be undergoing surgery that is clinically indicated as determined by their care providers. Patients must be eligible for surgical resection according to the following criteria:

    • Expectation that the surgeon can resect at least 500 mg of tumor from enhancing tumor and 100 mg from non-enhancing tumor (if available) with low risk of inducing neurological injury
  • Paraffin embedded tissue must be available from initial surgical resection at diagnosis (prior to any treatment). The following amount of tissue is requested: 1 formalin-fixed, paraffin embedded (FFPE) tissue block (preferred) or 30 FFPE unstained slides (5µm thick)
  • Patients must have a performance status ≥ 60% (i.e. the patient must be able to care for himself/herself with occasional help from others)
  • (ANC) ≥ 1000/uL
  • ≥ 100,000/uL
  • ≥ 9.0 g/dL or ≥ 5.6 mmol/L

    • Criteria must be met without erythropoietin dependency and without packed red blood cell (pRBC) transfusion within last 2 weeks
  • Creatinine ≤ 1 x (ULN) OR measured or calculated ≥ 30 mL/min for participant with creatinine levels > 1 x institutional ULN ( [GFR] can also be used in place of creatinine or creatinine clearance [CrCl])

    • Creatinine clearance (CrCl) should be calculated per institutional standard
  • Total ≤ 1.5 x ULN unless with Gilbert's syndrome
  • (AST) (serum glutamic oxaloacetic transaminase [SGOT]) and alanine aminotransferase (ALT) (serum glutamic pyruvic transaminase [SGPT]) ≤ 3 x ULN
  • (INR) OR prothrombin time (PT) activated partial thromboplastin time (aPTT) ≤ 1.5 x ULN unless participant is receiving anticoagulant therapy as long as PT or aPTT is within therapeutic range of intended use of anticoagulants
  • Patients must have (LVEF) within normal institutional limits within 21 days of starting treatment
  • Patients must have a 12-lead performed within 2 weeks of treatment start with Fridericia's formula- interval (QTcF) =\< 450 msec
  • Patients must be able to provide written informed consent
  • Women of must have a negative urine or serum pregnancy test within 7 days prior to the first dose
  • Women of childbearing potential and men must agree to use adequate method of for the duration of study participation and for at least 6 months after the last dose of study drug. Should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her treating physician immediately. Men treated or enrolled on this protocol must also agree to use adequate contraception prior to the study, for the duration of study participation, and for 6 months after the last dose of study drug
  • Patients must have no concurrent except curatively treated basal or squamous cell carcinoma of the skin or carcinoma in situ of the cervix, breast, prostate, bladder or melanoma in situ. Patients with prior malignancies must be disease-free for > three years
  • Patients must be able to swallow medication by mouth

COHORT B: Closed

COHORT C:

  • Patients must be ≥ 70 years of age at the time of informed consent, with a > 8 weeks
  • Patients must have histologically proven newly diagnosed WHO grade 4 glioblastoma/gliosarcoma
  • Patient initial tumor sample must have wild type IDH with evidence of EGFR mutation/amplification by CLIA-certified laboratory assay. Patients with EGFR mutations in T790M or exon 20 will be excluded
  • Patient must be able to tolerate MRIs. Pre-study enrollment MRIs must be available for central review, including the pre-surgery MRI and the immediate post-diagnostic surgery MRI. The immediate postoperative MRI is preferred but not required to occur within 96 hours of surgery. The patient must also have a baseline MRI within 14 days prior to enrollment. Craniotomy or intracranial site must be adequately healed and free of drainage or cellulitis. Enrollment is at least 2-4 weeks from prior surgery (if time is needed to be extended, PI approval needed)
  • Patients must have a Karnofsky performance status ≥ 60% (i.e. the patient must be able to care for himself/herself with occasional help from others)
  • Absolute neutrophil count (ANC) ≥ 1000/uL
  • Platelets ≥ 100000/uL
  • Hemoglobin ≥ 9.0 g/dL or ≥ 5.6 mmol/La

    • Criteria must be met without erythropoietin dependency and without packed red blood cell (pRBC) transfusion within last 2 weeks
  • Creatinine \< 1.5 times ULN OR measured or calculated creatinine clearance > 30 mL/min for participant with creatinine levels > 1.5 x institutional ULN (GFR can also be used in place of creatinine or CrCl)

    • Creatinine clearance (CrCl) should be calculated per institutional standard
  • Total bilirubin ≤ 1.5 x ULN unless with Gilbert's syndrome
  • AST (SGOT) and ALT (SGPT) ≤ 3 x ULN
  • International normalized ratio (INR) OR prothrombin time (PT) activated partial thromboplastin time (aPTT) ≤ 1.5 x ULN unless participant is receiving anticoagulant therapy as long as PT or aPTT is within therapeutic range of intended use of anticoagulants
  • Paraffin embedded tissue must be available from initial surgical resection at diagnosis. The following amount of tissue is requested: 1 formalin-fixed, paraffin embedded (FFPE) tissue block (preferred) or 30 FFPE unstained slides (5um thick)
  • Patients must have left ventricular ejection fraction (LVEF) within normal institutional limits within 21 days of starting treatment
  • Patients must have a 12-lead electrocardiogram performed within 2 weeks of treatment start with QTcF ≤ 450 msec
  • Patients must be able to provide written informed consent
  • Men treated or enrolled on this protocol who has a partner with must agree to use adequate contraception prior to the study, for the duration of study participation, and for 6 months after the last dose of study drug
  • Patients must have no concurrent malignancy except curatively treated basal or squamous cell carcinoma of the skin or carcinoma in situ of the cervix, breast, prostate, bladder or melanoma in situ. Patients with prior malignancies must be disease-free for > three years
  • Patients must be able to swallow medication by mouth

Exclusion criteria

Exclusion Criteria:

COHORT A:

  • Participants may not be receiving any other agents
  • Participants with a history of allergic reactions attributed to compounds of similar chemical or biologic composition to ERAS-801 are ineligible
  • Participants with prior therapy with EGFR inhibitors such as EGFR kinase inhibitors or other EGFR-targeted agents that have the potential to deplete the tumor of EGFR-amplified or EGFR mutant cell populations and confound the evaluation of ERAS-801 effects on participants are ineligible. If a participant had received previous treatment with EGFR-targeted agents but tumor resection after completing this treatment still shows EGFR amplification, patient might still be eligible and should be discussed with the principal investigator (PI)
  • Participants on enzyme-inducing anti-epileptic drugs (EIAED) are not eligible for treatment on this protocol. Patients may be on non-enzyme inducing anti-epileptic drugs or not be taking any anti-epileptic drugs. Patients previously treated with EIAED may be enrolled if they have been off the EIAED for 10 days or more prior to the first dose of ERAS-801
  • Participants must not have evidence of significant hematologic, renal, or hepatic dysfunction
  • Participants must not have evidence of significant intracranial hemorrhage
  • Participants with cardiovascular disease including, but not limited to:

    • Myocardial infarction or unstable angina within the 6 months prior to the first dose of study drug
    • Clinically significant cardiac arrhythmia
    • Prolonged > 450 ms
    • Uncontrolled (persistent) hypertension: systolic blood pressure > 180 mmHg; diastolic blood pressure > 100 mmHg
    • Congestive heart failure ( class III-IV)
    • Use of pacemaker
    • Pulmonary embolism \< 30 days
  • Participants with uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, or psychiatric illness/social situations that would limit compliance with study requirements, are ineligible
  • Pregnant women are excluded from this study because ERAS-801 has unknown potential for teratogenic or abortifacients effects. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with ERAS-801, breastfeeding should be discontinued if the mother is treated with ERAS-801
  • Participants currently using or anticipating need to use drugs, food, or herbal supplements known to be strong or moderate inducers or inhibitors of , CYP2C8, and/or CYP2D6 and P-glycoprotein (P-gp) substrates may be enrolled if they have been off the substrates for at least 10 days or 5 half-lives prior to the first dose of ERAS 801, whichever is shorter
  • Participants who have acute or currently active/requiring anti-viral therapy hepatic or biliary disease are ineligible (with the exception of patients with Gilbert's syndrome, asymptomatic gallstones, liver from the primary brain tumor, or stable chronic liver disease per investigator assessment)
  • Patients with gastrointestinal conditions that may affect reliable administration/absorption of medications including difficulty swallowing/unable to swallow pills; malabsorption syndrome; nausea and vomiting, chronic gastrointestinal (GI) disease or previous significant bowel resection with clinically significant sequelae are ineligible
  • Participants receiving P-gp inhibitors are ineligible
  • Patients who have known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the trial are ineligible

COHORT B: Closed

COHORT C:

  • Participants may not have received previous radiation therapy to the brain
  • Participants may not be receiving any other investigational agents
  • Participants with a history of allergic reactions attributed to compounds of similar chemical or biologic composition to ERAS-801 are ineligible
  • Participants on enzyme-inducing anti-epileptic drugs (EIAED) are not eligible for treatment on this protocol. Patients may be on non-enzyme inducing anti-epileptic drugs or not be taking any anti-epileptic drugs. Patients previously treated with EIAED may be enrolled if they have been off the EIAED for 10 days or more prior to the first dose of ERAS-801
  • Participants must not have evidence of significant hematologic, renal, or hepatic dysfunction
  • Participants must not have evidence of significant intracranial hemorrhage
  • Participants with clinically significant cardiovascular disease including, but not limited to:

    • Myocardial infarction or unstable angina within the 6 months prior to the first dose of study drug
    • Clinically significant cardiac arrhythmia
    • Prolonged QTcF > 450 ms
    • Uncontrolled (persistent) hypertension: systolic blood pressure > 180 mmHg; diastolic blood pressure > 100 mmHg
    • Congestive heart failure (New York Heart Association class III-IV)
    • Use of pacemaker
    • Pulmonary embolism \< 30 days
  • Participants with uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, or psychiatric illness/social situations that would limit compliance with study requirements, are ineligible
  • Sexually active male participants over the age of 70 with partners of unable or unwilling to use
  • Participants currently using or anticipating need to use drugs, food, or herbal supplements known to be strong or moderate inducers or inhibitors of CYP3A4, CYP2C8, and/or CYP2D6 and P-gp substrates may be enrolled if they have been off the substrates for at least 10 days or 5 half-lives prior to the first dose of ERAS 801, whichever is shorter
  • Participants who have acute or currently active/requiring anti-viral therapy hepatic or biliary disease are ineligible (with the exception of patients with Gilbert's syndrome, asymptomatic gallstones, liver metastases from the primary brain tumor, or stable chronic liver disease per investigator assessment)
  • Patients with gastrointestinal conditions that may affect reliable administration/absorption of medications including difficulty swallowing/unable to swallow pills; malabsorption syndrome; refractory nausea and vomiting, chronic gastrointestinal (GI) disease or previous significant bowel resection with clinically significant sequelae are ineligible
  • Participants receiving P-gp inhibitors are ineligible
  • Patients who have known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the trial are ineligible
Terms in these criteria, in plain language(27)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Karnofsky performance status (KPS)

A 0–100 scale of how well someone can carry out everyday activities. 100 is no complaints and no signs of illness; 70 is able to look after yourself but not to work or keep up normal activity; 50 is needing considerable help and frequent medical care.

Studies often ask for 60 or 70 and above. Your doctor gives the score.

Absolute neutrophil count (ANC)

The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.

It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

INR, PT and aPTT (clotting tests)

Blood tests of how long blood takes to clot. The INR is the prothrombin time (PT) put on a common scale; about 1 is usual for someone not taking a blood thinner.

Criteria often make an exception for people on a blood thinner such as warfarin, whose INR is raised on purpose.

LVEF (left ventricular ejection fraction)

The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

Reproductive potential

Able to have children. For women this usually means from the first period until menopause, unless permanently unable to through surgery; for men, unless permanently sterile. Read who the line is about — participants, women, men, or their partners.

Criteria about it usually ask for contraception during the study and for a time after it.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

CYP3A (CYP3A4) inhibitors and inducers

CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.

Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
50 participants (estimated)

Study arms

  • Experimental
    Cohort A (ERAS-801)

    Patients receive ERAS-801 PO QD for 8-14 days prior to undergoing scheduled surgical resection. Starting no more than 28 days after surgery, patients then receive ERAS-801 PO QD on days 1-28 of each cycle. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients also undergo ECHO, urine and blood sample collection and brain MRI throughout the study. Additionally, patients undergo CSF sample collection at the time of surgery and FDG PET on study.

    Procedure: Biospecimen Collection · Procedure: Echocardiography Test · Drug: EGFR Inhibitor ERAS-801 · Other: Fludeoxyglucose F-18 · Procedure: Magnetic Resonance Imaging · Procedure: Positron Emission Tomography · Procedure: Surgical Procedure

  • Experimental
    Cohort B (ERAS-801)

    After first or second recurrence, patients receive ERAS-801 PO BID on days 1-28 of each cycle. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients also undergo ECHO, urine and blood sample collection and brain MRI and FDG-PET throughout the study.

    Procedure: Biospecimen Collection · Procedure: Echocardiography Test · Drug: EGFR Inhibitor ERAS-801 · Other: Fludeoxyglucose F-18 · Procedure: Magnetic Resonance Imaging · Procedure: Positron Emission Tomography

  • Experimental
    Cohort C (ERAS-801)

    Within 2-4 weeks of the last tumor surgery, newly diagnosed patients receive ERAS-801 PO BID on days 1-28 of each cycle. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients also undergo ECHO, urine and blood sample collection and brain MRI and FDG-PET throughout the study.

    Procedure: Biospecimen Collection · Procedure: Echocardiography Test · Drug: EGFR Inhibitor ERAS-801 · Other: Fludeoxyglucose F-18 · Procedure: Magnetic Resonance Imaging · Procedure: Positron Emission Tomography

Interventions

  • ProcedureBiospecimen Collection

    Undergo urine, blood, and CSF sample collection

    Also known as: Biological Sample Collection, Biospecimen Collected, Sample Collection, Specimen Collection

  • ProcedureEchocardiography Test

    Undergo ECHO

    Also known as: EC, Echocardiography

  • Given PO

    Also known as: ERAS 801, ERAS-801, ERAS801

  • OtherFludeoxyglucose F-18

    Given FDG

    Also known as: 18FDG, FDG, Fludeoxyglucose (18F), fludeoxyglucose F 18, Fludeoxyglucose F18, Fluorine-18 2-Fluoro-2-deoxy-D-Glucose, Fluorodeoxyglucose F18

  • ProcedureMagnetic Resonance Imaging

    Undergo brain MRI

    Also known as: Magnetic Resonance, Magnetic Resonance Imaging (MRI), Magnetic resonance imaging (procedure), Magnetic Resonance Imaging Scan, Medical Imaging, Magnetic Resonance / Nuclear Magnetic Resonance, MR, MR Imaging, MRI, MRI Scan, MRIs, NMR Imaging, NMRI, Nuclear Magnetic Resonance Imaging, sMRI, Structural MRI

  • ProcedurePositron Emission Tomography

    Undergo FDG PET

    Also known as: Medical Imaging, Positron Emission Tomography, PET, PET Scan, Positron emission tomography (procedure), Positron Emission Tomography Scan, Positron-Emission Tomography, PT

  • ProcedureSurgical Procedure

    Undergo surgical resection

    Also known as: Operation, Surgery, Surgery Type, Surgery, NOS, Surgical, Surgical Intervention, Surgical Interventions, Surgical Procedures, Type of Surgery

06

What researchers measure

Primary outcomes

  1. Fludeoxyglucose F-18 (FDG) tumor uptake (Cohort A)

    FDG positron emission tomography (PET), as measured by median normalized FDG standardized uptake value (SUV) within the contrast enhancing tumor, will be compared to estimate the change in FDG uptake in the tumor. Analyses will be descriptive, summarizing changes with confidence intervals and exploring correlations; no formal hypothesis testing is planned.

    Time frame: At baseline, prior to initiation of study treatment and after study treatment prior to surgery

  2. Pharmacokinetics (PK) dose modification (Cohort B)

    Will evaluate the effect of 120 mg twice daily dosing on corrected QT interval (QTc) relative to maximum concentration compared with historical 240 mg once-daily data. PK data and triplicate electrocardiograms will be summarized descriptively, with QTc analyzed as a continuous change.

    Time frame: At day 1 and day 15

  3. 6 month progression free survival (Cohort C)

    Will be summarized as a proportion with corresponding 95% exact confidence intervals. Nominal exact two-sided p-values will be presented, testing EGFR inhibitor ERAS-801 against a fixed 5% null rate. Simon's minimax two-stage design will be used for conducting the trial.

    Time frame: At 6 months

Secondary outcomes

  1. Incidence of adverse events

    Adverse events will be described by the National Cancer Institute Common Terminology Criteria for Adverse Events version 5. Will be presented using a 95% confidence interval and 2-sided p-value, combined with Bayesian posterior means and High Posterior Density intervals. Descriptive summaries and data visualization will be used

    Time frame: From enrollment to 30 days after the last dose of study treatment

  2. Change in glycolytic index (GI)

    The GI measurement will be measured by the product of FDG PET SUV and potential of hydrogen (pH)-weighted chemical exchange saturation transfer (CEST)-spin-and-gradient echo (SAGE)- echoplanar imaging (EPI) and will be compared to estimate the change in GI in the tumor area as a surrogate for changes in glycolytic flux.

    Time frame: At baseline, prior to initiation of study treatment and after study treatment prior to surgery

  3. pH-weighted CEST-SAGE-EPI

    Amine proton CEST-SAGE-EPI will be evaluated for change in acidity in the tumor. Continued monitoring for tumor acidity will occur throughout the study treatment cycles.

    Time frame: At baseline, prior to initiation of study treatment and after study treatment prior to surgery

  4. PK profile

    PK concentration data will be summarized using appropriate summary statistics and further details will be provided.

    Time frame: At time of surgery and then at the beginning of each treatment cycle (1 cycle = 28 days)

07

Study locations

1 of 2 sites recruiting
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 18, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT07089641
Responsible party
Sponsor
First posted
Jul 28, 2025
Start date
Jul 28, 2025
Primary completion
Jul 30, 2027 (estimated)
Completion
Jul 30, 2028 (estimated)
Last update
Sep 18, 2026

Study contacts

Phioanh Nghiemphu
principal investigator · UCLA / Jonsson Comprehensive Cancer Center

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: ERAS-801

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