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CLN-081

Phase 1

Non Small Cell Lung Cancer | Small molecule | Oncology |Cullinan Therapeutics, Inc.|Last Updated: Jun 17, 2026

Target and mechanism

Molecular targetEGFR
Target classProtein
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment284

FDA Designations

No designations recorded

Clinical trial landscape

CLN-081 · 1 trial · 2 indications

Phase 1 1
NCT04036682A Phase 1/2 Trial of CLN-081 in Patients With Non-Small Cell Lung CancerNon Small Cell Lung Cancer
ACTIVE NOT_RECRUITING284 Analytics
PHASE1ACTIVE NOT_RECRUITING
A Phase 1/2 Trial of CLN-081 in Patients With Non-Small Cell Lung Cancer
Non Small Cell Lung CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

All Cohorts: The rate and severity of treatment emergent AEs.
24 months
All Cohorts: The rate and severity of DLTs.
24 months
Phase 2 Dose Expansion Cohorts: Overall response rate (ORR)
24 months
Module A: Pharmacokinetic (PK) parameter
24 months

Maximum Plasma Concentration \[Cmax\]

Module B and C: Confirmed overall response rate (ORR) and duration of response (DOR) by independent review committee (IRC)
24 months

Secondary Endpoints

Phase 1 Dose Escalation and Expansion, Phase 2a Dose Expansion, and Module B and C Cohorts: ORR by Investigator assessment
24 months
Phase 1 Dose Escalation and Dose Expansion, Phase 2a Dose Expansion, and Module B and C Cohorts: DOR (duration of response).
24 months
Phase 1 Dose Escalation and Dose Expansion, Phase 2a Dose Expansion, and Module B and C Cohorts: DCR (disease control rate)
24 months
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Phase 1 Dose Escalation (Accelerated Titration)EXPERIMENTALCLN-081 BID in single patient dose escalation cohorts enrolling NSCLC patients with EGFR exon 20 insertion mutations that either have received or never received prior EGFR TKIs.
Phase 1 Dose Escalation (Rolling Six)EXPERIMENTALCLN-081 BID in Rolling Six dose escalation cohorts enrolling NSCLC patients with EGFR exon 20 insertion mutations.
Phase 2a Dose Expansion(s)EXPERIMENTALCLN-081 BID in expansion cohorts that may be opened at doses that meet pre-specified efficacy and safety criteria.
Module A Food AffectEXPERIMENTALSingle-dose CLN-081 150 mg with and without high fat food intake.
Module BEXPERIMENTALCLN-081 BID in NSCLC patients with EGFR exon 20 insertion mutations that have received prior systemic therapy for locally advanced or metastatic disease.
Module CEXPERIMENTALCLN-081 BID to patients with EGFR exon 20 insertion mutant NSCLC after prior therapy with an agent approved for the treatment of ex20ins mutant NSCLC.

Interventions

NameTypeDescription
CLN-081DRUGCLN-081 tablets
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites64

Inclusion Criteria 1. Histologically or cytologically confirmed locally advanced or metastatic NSCLC (all patients). 2. Documented EGFR ex20ins mutation demonstrated by a validated test listed in Section 9.7 and performed in a Clinical Laboratory Improvement Amendments (CLIA)-certified or equivalen...

Countries:United StatesHong KongItalyJapanNetherlandsSingaporeSouth KoreaSpainTaiwan
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Competitive Landscape -Non-Small Cell Lung Cancer 389 trials (matched to "Non Small Cell Lung Cancer")

Recent Changes (Last 90 Days)

MEDIUMJun 18, 2026NCT04036682primaryCompletionDate: changed
MEDIUMJun 18, 2026NCT04036682primaryCompletionDate: changed
MEDIUMJun 18, 2026NCT04036682primaryCompletionDate: changed
MEDIUMJun 18, 2026NCT04036682primaryCompletionDate: changed

Frequently asked questions about CLN-081

What is CLN-081 used for?

CLN-081 is an investigational small molecule being developed for the treatment of non-small cell lung cancer (NSCLC), specifically in patients with EGFR exon 20 mutations. It is currently in Phase 1 clinical development and has not been approved by the FDA.

What does CLN-081 target?

CLN-081 targets the epidermal growth factor receptor (EGFR), a protein involved in cell growth and division. By targeting EGFR, CLN-081 is designed to address cancers driven by mutations in this receptor, such as EGFR exon 20 mutations found in non-small cell lung cancer.

Who is developing CLN-081?

CLN-081 is being developed by Cullinan Therapeutics, Inc., a biopharmaceutical company traded on the stock exchange under the ticker symbol CGEM. The company is conducting clinical trials to evaluate the drug's safety and efficacy in patients with non-small cell lung cancer.

What phase is CLN-081 in?

CLN-081 is currently in Phase 1 clinical development. It is an investigational drug, meaning it has not yet received regulatory approval and is still being studied in clinical trials to assess its safety and effectiveness in patients with non-small cell lung cancer.

What clinical trials is CLN-081 in?

CLN-081 is being studied in a Phase 1/2 trial with the identifier NCT04036682. This trial is active but not recruiting participants and has an enrollment of 284 patients. The study is evaluating CLN-081 in patients with non-small cell lung cancer and EGFR exon 20 mutations across multiple countries.

Is CLN-081 the same as other EGFR inhibitors?

CLN-081 is a distinct investigational small molecule targeting EGFR, specifically designed for non-small cell lung cancer with EGFR exon 20 mutations. While it shares a target with other EGFR inhibitors, it is a unique compound being developed by Cullinan Therapeutics and is not the same as other approved or investigational EGFR-targeting drugs.