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ZL-1310

Phase 3

Small-cell Lung Cancer | Small molecule | Oncology |Zai Lab Limited|Last Updated: Sep 4, 2026

Target and mechanism

Molecular targetDLL3
Target classProtein
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedACTIVE_CONTROLLED
Total Trials1
Total Enrollment480

FDA Designations

ORPHAN_DRUGFAST_TRACK

Clinical trial landscape

ZL-1310 · 3 trials · 3 indications

Phase 3 1Phase 1 2
NCT07218146A Study of ZL-1310 Versus Investigator's Choice of Therapy in Participants With Relapsed Small Cell Lung Cancer (DLLEVATE)Small-cell Lung Cancer
RECRUITING480 Analytics
PHASE3RECRUITING
A Study of ZL-1310 Versus Investigator's Choice of Therapy in Participants With Relapsed Small Cell Lung Cancer (DLLEVATE)
Small-cell Lung CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Confirmed objective response rate (ORR) assessed by Blinded Independent Central Review of ZL-1310 compared to Investigator's Choice Therapy (ICT)
up to 30 months
Overall survival of ZL-1310 compared to Investigator's Choice Therapy (ICT)
up to 30 months
Incidence of Treatment Emergent Adverse-Events in Phase 1b
up to 36 months

Number of subjects with treatment-emergent adverse events (TEAEs)

Incidence of Serious Adverse Events in Phase 1b
up to 36 months

Number of subjects with serious adverse events (SAEs)

Evaluate antitumor activity of ZL-1310 as a single agent in Phase 2
up to 36 months

Confirmed objective response rate (ORR) determined by blinded independent central review (BICR) in Phase 2

Incidence of Dose Limiting Toxicities of ZL-1310 as a single agent (Part 1A), in combination with Atezolizumab (Part 1B), and in combination with atezolizumab and carboplatin (Part 1C)
up to 24 months

Number of subjects with Dose Limiting Toxicities (DLTs)

Incidence of Treatment Emergent Adverse-Events of ZL-1310 as a single agent (Part 1A), in combination with atezolizumab (Part 1B), and in combination with atezolizumab and carboplatin (Part 1C)
up to 24 months

Number of subjects with treatment-emergent adverse events (TEAEs)

Incidence of Serious Adverse Events of ZL-1310 as a single agent (Part 1A), in combination with atezolizumab (Part 1B), and in combination with atezolizumab and carboplatin (Part 1C)
up to 24 months

Number of subjects with serious adverse events

Incidence of Treatment Emergent Adverse Events of ZL-1310 as a single agent (Part 2), in combination with atezolizumab (Part 3) and in combination with atezolizumab and carboplatin (Part 4)
up to 24 months

Number of subjects with treatment emergent adverse events leading to dose modifications and/or study treatment discontinuation

Incidence of Serious Adverse-Events (SAEs) of ZL-1310 as a single agent (Part 2), in combination with atezolizumab (Part 3), and in combination with atezolizumab and carboplatin (Part 4)
up to 24 months

Number of subjects with serious adverse events

Antitumor activity per RECIST v1.1 by investigator's assessment of ZL-1310 as a single agent (Part 2), in combination with atezolizumab (Part 3), and in combination with atezolizumab and carboplatin (Part 4)
up to 24 months

antitumor activity per RECIST v1.1 by investigator's assessment

Objective response rate (ORR) per RECIST v1.1 of ZL-1310 as a single agent (Part 2) and in combination with atezolizumab and carboplatin (Part 4)
up to 24 months

objective response rate per RECIST v1.1

Disease control rate (DCR) per RECIST v1.1 of ZL-1310 in combination with atezolizumab
up to 24 months

disease control rate per RECIST v1.1

Secondary Endpoints

Duration of response (DoR) assessed by BICR and by the investigator per RECIST v1.1 of ZL-1310 compared to Investigator's Choice Therapy (ICT)
up to 30 months
Progression-free survival (PFS) assessed by BICR and by the investigator per RECIST v1.1 of ZL-1310 compared to Investigator's Choice Therapy (ICT)
up to 30 months
Confirmed ORR assessed by the investigator per RECIST v1.1 of ZL-1310 compared to Investigator's Choice Therapy (ICT)
up to 30 months
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Arm 1EXPERIMENTALZL-1310 as a single agent
Arm 2ACTIVE_COMPARATORInvestigator's Choice of Therapy
Single ArmEXPERIMENTALZL-1310 as a single agent
Dose Escalation: Part 1AEXPERIMENTALZL-1310 as a single-agent
Dose Expansion: Part 1BEXPERIMENTALZL-1310 in combination with Atezolizumab
Dose Escalation: Part 1CEXPERIMENTALZL-1310 in combination with Atezolizumab and Carboplatin as induction and followed by ZL-1310 and Atezolizumab as maintenance
Dose Expansion: Arm 1 (Part 2)EXPERIMENTALDose level 1 of ZL-1310 established from single-agent dose-escalation
Dose Expansion: Arm 2 (Part 2)EXPERIMENTALDose level 2 of ZL-1310 established from single-agent dose escalation
Dose Extension: Arm 1 (Part 2)EXPERIMENTALZL-1310 as a single agent
Doublet Dose Optimization: Arm 1 (Part 3A)EXPERIMENTALDose level 1 of ZL-1310 established from single agent dose escalation, in combination with Atezolizumab
Doublet Dose Optimization: Arm 2 (Part 3A)EXPERIMENTALDose level 2 of ZL-1310 established from single agent dose escalation in combination with Atezolizumab
Triplet Dose Optimization: Arm 1 (Part 4A)EXPERIMENTALDose level 1 of ZL-1310 established from single agent dose escalation in combination with Atezolizumab + Carboplatin induction followed by ZL-1310 + Atezolizumab as maintenance
Triplet Dose Optimization: Arm 2 (Part 4A)EXPERIMENTALDose level 2 of ZL-1310 established from single agent dose escalation, in combination with Atezolizumab + Carboplatin induction followed by ZL-1310 + atezolizumab as induction
Dose Extension: Part 2-1EXPERIMENTALsingle-agent dose extension for Post-anti-DLL3
Doublet Dose Extension: Part 3BEXPERIMENTALDoublet dose extension for 1L maintenance only OR 1L induction + maintenance; to be initiated at the discretion of the sponsor based on the available emerging data.
Triplet Dose Extension: Part 4BEXPERIMENTALTriplet dose extension for 1L induction + maintenance; to be initiated at the discretion of the sponsor based on the available emerging data.

Interventions

NameTypeDescription
ZL-1310DRUGZL-1310 as a single-agent
Investigator's Choice of TherapyDRUGTopotecan or Amrubicin
AtezolizumabDRUGDrug Atezolizumab
CarboplatinDRUGDrug Carboplatin
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites155

Inclusion Criteria: * Age \>/= 18 years, or considered an adult by local regulations, at the time of consent * Signed informed consent * Histologically or cytologically confirmed SCLC. Received 1L platinum-based systemic therapy and had documented disease progression during or after the most recent...

Countries:United StatesAustriaBelgiumChinaCzechiaFranceGermanyGreeceItalyJapanNetherlandsPolandSpainTurkey (Türkiye)United Kingdom
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Competitive Landscape -Non-Small Cell Lung Cancer 387 trials (matched to "Small-cell Lung Cancer")

Recent Changes (Last 90 Days)

LOWSep 4, 2026NCT07218146lastUpdatePostDate: changed
LOWSep 4, 2026NCT07218146lastUpdatePostDate: changed
LOWAug 21, 2026NCT06179069lastUpdatePostDate: changed
LOWAug 21, 2026NCT06885281lastUpdatePostDate: changed
LOWAug 21, 2026NCT06179069lastUpdatePostDate: changed
LOWAug 21, 2026NCT06885281lastUpdatePostDate: changed
MEDIUMAug 17, 2026NCT07218146lastUpdatePostDate: changed
MEDIUMAug 17, 2026NCT07218146lastUpdatePostDate: changed
LOWJul 24, 2026NCT06885281lastUpdatePostDate: changed
LOWJul 24, 2026NCT06179069lastUpdatePostDate: changed
LOWJul 24, 2026NCT06885281lastUpdatePostDate: changed
LOWJul 24, 2026NCT06179069lastUpdatePostDate: changed
LOWJul 20, 2026NCT07218146lastUpdatePostDate: changed
LOWJul 20, 2026NCT07218146lastUpdatePostDate: changed
LOWJul 15, 2026NCT07218146lastUpdatePostDate: changed
LOWJul 15, 2026NCT07218146lastUpdatePostDate: changed
MEDIUMJul 7, 2026NCT06885281Enrollment: 112 → 166
MEDIUMJul 7, 2026NCT06885281Enrollment: 112 → 166
LOWJun 23, 2026NCT07218146lastUpdatePostDate: changed
LOWJun 23, 2026NCT07218146lastUpdatePostDate: changed

Frequently asked questions about ZL-1310

What is ZL-1310 used for?

ZL-1310 is an investigational small molecule being developed for the treatment of small-cell lung cancer (SCLC) and selected solid tumors. It is currently in Phase 1 clinical trials for these indications, with studies recruiting participants in the United States, China, and Spain.

What does ZL-1310 target?

ZL-1310 targets DLL3, a protein that is expressed in certain cancer cells. By targeting DLL3, the drug aims to interfere with tumor growth. This mechanism is being studied in the context of small-cell lung cancer and other solid tumors.

Who makes ZL-1310?

ZL-1310 is being developed by Zai Lab Limited, a biopharmaceutical company traded on the NASDAQ under the ticker symbol ZLAB. The company is conducting clinical trials for this drug in multiple countries, including the United States and China.

What phase is ZL-1310 in?

ZL-1310 is currently in Phase 1 clinical development. It is an investigational drug and has not been approved by the FDA. The drug has received Orphan Drug and Fast Track designations from the FDA for its potential use in small-cell lung cancer.

What clinical trials is ZL-1310 in?

ZL-1310 is being studied in three clinical trials. NCT06179069 is a Phase 1 study in small-cell lung cancer with 339 participants. NCT06885281 is a Phase 1 study in selected solid tumors with 166 participants. NCT07218146 is a Phase 3 study in relapsed small-cell lung cancer with 480 participants.

Is ZL-1310 the same as ZL-1310 in combination with Atezolizumab or Durvalumab?

ZL-1310 is also known as ZL-1310 in combination with Atezolizumab or Durvalumab. This name reflects ongoing research into combining the drug with these immunotherapies, although the clinical trials listed for ZL-1310 do not explicitly detail combination arms.