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CLN-081

Phase 1

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

CLN-081 development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Jul 2019

CLN-081 target and mechanism

Molecular targetEGFR
Target classInhibitor
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDBiomarker
Total Trials1
Total Enrollment284

FDA Designations

No designations recorded

CLN-081 clinical trials

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 541 trials (matched to "Non Small Cell Lung Cancer")

Top 20 of 90 competitors

CompanyTickerTrialsLead PhaseDrugs
Merck & Co., Inc.MRK37PHASE3Pembrolizumab, Olaparib, Sacituzumab tirumotecan, Intismeran autogene, Pembrolizumab Berahyaluronidase alfa
Revolution Medicines, Inc.RVMD9PHASE3Daraxonrasib, Zoldonrasib, Elironrasib, RMC-5127
Eli Lilly and CompanyLLY18PHASE3Selpercatinib, Pemetrexed, Abemaciclib, Olomorasib, LY3537982
AbbVie, Inc.ABBV12PHASE3ABBV-1480, Telisotuzumab vedotin, Telisotuzumab Adizutecan, Livmoniplimab, Budigalimab
AstraZeneca PLCAZN68PHASE3Datopotamab deruxtecan, Durvalumab, Oleclumab, Monalizumab, Tremelimumab
Gilead Sciences, Inc.GILD7PHASE3Sacituzumab govitecan, Zimberelimab, Domvanalimab, Etrumadenant, TUB-040- Dose escalation
Bristol-Myers Squibb CompanyBMY24PHASE3Repotrectinib, Nivolumab, Pumitamig, Relatlimab, Adagrasib
Johnson & JohnsonJNJ19PHASE3Lazertinib, Amivantamab, JNJ-90301900, JNJ-86974680, Cetrelimab
BioNTech SE Sponsored ADRBNTX7PHASE3Gotistobart, Pumitamig, BNT326, BNT116, BNT324
Pfizer Inc.PFE20PHASE3Lorlatinib, Crizotinib, Avelumab, Talazoparib, Axitinib
Amgen Inc.AMGN4PHASE3ABP 234, Sotorasib, Anvumetostat
Novartis AG Sponsored ADRNVS12PHASE3Opnurasib, TNO155, DKY709, Spartalizumab, trametinib
GSK plc Sponsored ADRGSK3PHASE3Dostarlimab, Belrestotug, Nelistotug, Cobolimab
ArriVent BioPharma, Inc.AVBP9PHASE3Firmonertinib
Summit Therapeutics IncSMMT2PHASE3Ivonescimab
Nuvation Bio, Inc. Class ANUVB4PHASE3Taletrectinib
Genmab A/S Sponsored ADRGMAB4PHASE3Acasunlimab, Rina-S, GEN1042
Regeneron Pharmaceuticals, Inc.REGN7PHASE2Cemiplimab, Marlotamig, Fianlimab, REGN5093
Nuvalent, Inc. Class ANUVL1PHASE3Neladalkib
BeOne Medicines Ltd. Sponsored ADRONC7PHASE3Tislelizumab, BGB-A445, LBL-007, BGB-15025, BGB-43395
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Frequently asked questions about CLN-081

What is CLN-081 used for?

CLN-081 is an investigational oral therapy being studied for non-small cell lung cancer, specifically in patients whose tumors carry EGFR exon 20 insertion mutations. It is a biomarker-selected treatment, meaning trial enrollment is limited to patients whose cancers test positive for that mutation. It is not approved for any use and remains in clinical development.

What does CLN-081 target?

CLN-081 targets EGFR, the epidermal growth factor receptor, and acts as an inhibitor of that target. It is a small molecule designed to inhibit EGFR signaling in tumors driven by EGFR mutations, including exon 20 insertion variants. Targeting EGFR is the basis for its study in EGFR-mutant non-small cell lung cancer.

Who is developing CLN-081?

CLN-081 is being developed by Cullinan Therapeutics, Inc., which trades on the Nasdaq under the ticker CGEM. The company is the sponsor of the clinical program evaluating the drug in EGFR-mutant non-small cell lung cancer.

What phase is CLN-081 in?

CLN-081 is in Phase 1 clinical development. It is an investigational drug and has not been approved by the FDA or any other regulatory agency. The ongoing study is a Phase 1/2 trial, and the program remains in early-stage clinical testing in non-small cell lung cancer.

What clinical trials is CLN-081 in?

CLN-081 is being evaluated in the Phase 1/2 trial NCT04036682, titled A Phase 1/2 Trial of CLN-081 in Patients With Non-Small Cell Lung Cancer. The trial has enrolled 284 patients, is active but not recruiting, and is conducted across the United States, Hong Kong, Italy, Japan, the Netherlands, Singapore, South Korea, Spain, and Taiwan.

What kind of cancer does CLN-081 treat?

CLN-081 is being studied in non-small cell lung cancer, the most common form of lung cancer. The trial enrolls patients with EGFR exon 20 insertion mutations, a specific molecular subgroup of the disease. It is an investigational small molecule and is not approved to treat any cancer.