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silevertinib monotherapy

Phase 1

Non-Small Cell Lung Cancer | Small molecule | Oncology |Black Diamond Therapeutics, Inc.|Last Updated: Jul 22, 2026

Target and mechanism

Target class-Tinib (Kinase)
ModalitySmall molecule

Also known as silevertinib (BDTX-1535) monotherapy

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment200

FDA Designations

No designations recorded

Clinical trial landscape

silevertinib monotherapy · 1 trial · 10 indications

Phase 1 1
NCT05256290Phase 1/2 Study of Silevertinib (BDTX-1535) in Patients With Glioblastoma or Non-Small Cell Lung Cancer With EGFR MutationsNon-Small Cell Lung Cancer
ACTIVE NOT_RECRUITING200 Analytics
PHASE1ACTIVE NOT_RECRUITING
Phase 1/2 Study of Silevertinib (BDTX-1535) in Patients With Glioblastoma or Non-Small Cell Lung Cancer With EGFR Mutations
Non-Small Cell Lung CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Phase 1 Dose Escalation: To determine the maximum tolerated dose (MTD), if one exists, and the preliminary recommended Phase 2 dose(s) (RP2D[s]) of silevertinib (BDTX-1535)
The first treatment 21-day cycle (Cycle 1)

Dose-limiting toxicities (DLTs) in Cycle 1

Phase 2: To assess antitumor efficacy of silevertinib (BDTX-1535)
Day 1 every 2 cycles starting on Cycle 3 Day 1 to study completion, approximately 1 year (each cycle is 21 days)

Objective response rate (ORR) as assessed by Investigator using RECIST version 1.1

Secondary Endpoints

Phase 1 and Phase 2: Incidence and severity of treatment-emergent adverse events (TEAEs)
Through study completion, approximately 1 year
Phase 1 and Phase 2: To characterize the plasma concentration of silevertinib (BDTX-1535) following single and multiple dosing
Cycle 1 Days 1, 2, 15, and 16, Cycles 2 to 5 Day 1, and Day 1 of every other cycle thereafter to study completion, approximately 1 year (each cycle is 21 days)
Phase 1: To assess the preliminary antitumor activity of silevertinib (BDTX-1535) by objective response as assessed by RECIST version 1.1 (for patients with NSCLC) or Response Assessment in Neuro-oncology (RANO) (for patients with GBM)
Day 1 every 2 cycles starting on Cycle 3 Day 1 to study completion, approximately 1 year (each cycle is 21 days)
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Phase 1 Dose Escalation - Monotherapy (Recruitment Closed)EXPERIMENTAL* Advanced/metastatic NSCLC with acquired resistance EGFR mutation (eg, C797S), following a 3rd generation EGFR inhibitor in the 1st line setting (in the absence of concurrent T790M). * Advanced/metastatic NSCLC with non-classical EGFR mutation (eg, G719X) following standard-of-care therapy with an EGFR inhibitor * Recurrent GBM with confirmed EGFR alterations (including amplification, mutation, and/or variant)
Phase 2 Cohort 1: NSCLC EGFR Non-Classical Driver MutationsEXPERIMENTALAdvanced/metastatic NSCLC with a non-classical driver EGFR mutation following up to 2 lines of therapy with only 1 prior EGFR targeted regimen (third-generation preferred; other approved EGFR inhibitors acceptable)
Phase 2 Cohort 2: NSCLC EGFR Acquired Resistance (C797S) MutationEXPERIMENTALAdvanced/metastatic NSCLC with the acquired resistance C797S EGFR mutation following up to 2 lines of therapy, including only 1 EGFR targeted regimen, which must be a third generation EGFR TKI (eg, osimertinib)
Phase 2 Cohort 3: Treatment Naive NSCLC EGFR Non-Classical Driver MutationsEXPERIMENTALTreatment-naïve (first-line) advanced/metastatic NSCLC with a non-classical driver EGFR mutation (1 cycle of chemotherapy or immune checkpoint inhibitor are permitted). Patients with co-occurring L858R mutations and a non-classical mutation are eligible for inclusion.

Interventions

NameTypeDescription
silevertinib (BDTX-1535) monotherapyDRUGSilevertinib (BDTX-1535) is a 4th generation irreversible brain penetrant EGFR MasterKey inhibitor, which targets a family of oncogenic EGFR classical and non-classical driver and resistance mutations in NSCLC.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites25

Phase 2 Eligibility: Key Inclusion Criteria Required for locally advanced or metastatic NSCLC: * Measurable disease by RECIST 1.1 criteria. * Adequate bone marrow or organ function. * Life expectancy of ≥ 3 months. * Sufficient performance status. * Confirmed NSCLC, without small cell lung cancer ...

Countries:United States
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Competitive Landscape -Non-Small Cell Lung Cancer 393 trials

Recent Changes (Last 90 Days)

MEDIUMJul 22, 2026NCT05256290Completion: 2026-06 → 2027-12
MEDIUMJul 22, 2026NCT05256290Completion: 2026-06 → 2027-12
LOWMay 26, 2026NCT05256290primaryCompletionDate: changed
LOWMay 24, 2026NCT05256290studyFirstPostDate: changed

Frequently asked questions about silevertinib monotherapy

What is silevertinib monotherapy used for?

Silevertinib monotherapy is an investigational small molecule being studied for Non-Small Cell Lung Cancer (NSCLC), including advanced and metastatic forms. It is also being evaluated in glioblastoma. The drug is in Phase 1 clinical development and is not yet approved by the FDA.

What does silevertinib target?

Silevertinib is a kinase inhibitor, a type of targeted therapy that blocks specific enzymes involved in cancer cell growth. It is being studied in patients with EGFR mutations, including the C797S and G719X mutations, which are associated with resistance to earlier EGFR-targeted treatments.

Who makes silevertinib?

Silevertinib is being developed by Black Diamond Therapeutics, Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol BDTX. The company is conducting clinical trials to evaluate the drug's safety and efficacy in patients with EGFR-mutant cancers.

What phase is silevertinib in?

Silevertinib is currently in Phase 1 clinical development. It is an investigational drug, meaning it has not been approved by regulatory authorities. The ongoing Phase 1/2 study is actively enrolling or has enrolled patients, but the drug is not yet available commercially.

What clinical trials is silevertinib in?

Silevertinib is being studied in a Phase 1/2 clinical trial identified as NCT05256290. This trial is evaluating the drug in patients with glioblastoma or Non-Small Cell Lung Cancer with EGFR mutations. The study is active but not recruiting, with an estimated enrollment of 200 participants in the United States.

Is silevertinib the same as BDTX-1535?

Yes, silevertinib is also known as BDTX-1535. In clinical trial records, the drug is referred to as silevertinib (BDTX-1535). It is being studied as a monotherapy and in combination with temozolomide, though the current trial focuses on monotherapy.