Small Cell Lung CancerPhase 1NCT07231445
Study of ZG006 in Combination With PD-1/PD-L1 Immune Checkpoint Inhibitors as First-Line Standard Therapy in Participants With Extensive Stage Small-Cell Lung Cancer
A Phase 1 study testing ZG006 and Serplulimab in people with Small Cell Lung Cancer, run by Suzhou Zelgen Biopharmaceuticals Co.,Ltd at 1 site in China.
Trial summary
This is a randomized, multicenter, phase Ib study to evaluate the safety and efficacy of ZG006 combined with PD-1/PD-L1 immune checkpoint inhibitors (±chemotherapy) as first-line therapy in Participants with extensive stage small cell lung cancer. Read more about this study
- Who is it for?
- Ages 18 to 75 years
- Conditions the study is for
- Small Cell Lung Cancer
- What is being tested?
- ZG006 and Serplulimab
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 100 participants
- Where
- 1 siteChina
- Study dates
- 21 Apr 2026to Dec 2028
- Phase
- Phase 1
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 75 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Participants with histologically or cytologically confirmed ES-SCLC.
- Fully understand the study and voluntarily sign the informed consent form;
- Male or female 18~75 years of age;
- Eastern Cooperative Oncology Group(ECOG) Performance Status of 0 or 1;
- Life expectancy ≥ 3 months;
Who cannot join
- Participants were deemed unsuitable for participating in the study by the investigator for any reason.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
China1 site, 1 recruiting
- Recruiting
Shanghai Chest Hospital
Shanghai, Shanghai Municipality, 200030
Shun Lu
About this study
Official title: A Phase Ib Study Evaluating the Safety and Efficacy of ZG006 in Combination With PD-1/PD-L1 Immune Checkpoint Inhibitors as First-Line Standard Therapy in Participants With Extensive Stage Small-Cell Lung Cancer
This is a randomized, multicenter, phase Ib study to evaluate the safety and efficacy of ZG006 combined with PD-1/PD-L1 immune checkpoint inhibitors (±chemotherapy) as first-line therapy in Participants with extensive stage small cell lung cancer.
- Conditions
- Small Cell Lung Cancer
- Being tested
- ZG006, Serplulimab
- Medical subject headings
- Small Cell Lung Carcinoma
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
ZG006Drug
ZG006 will be administered as an IV infusion.
SerplulimabDrug
Serplulimab will be administered as an IV infusion.
| Study group | Role | What they receive |
|---|---|---|
| Part 1：Group A | Experimental | ZG006 Q3W Receives: Drug: ZG006; Drug: Serplulimab |
| Part 1：Group B | Experimental | ZG006 Q3W Receives: Drug: ZG006; Drug: Serplulimab |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of Participants Experiencing Dose-limiting toxicities (DLTs)
Measured: Up to Day 28
Number of Participants Experiencing Treatment-emergent Adverse Events (TEAEs)
Measured: Up to 2 Years
Secondary outcomes (3)
Objective Response Rate (ORR) per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1
Measured: Up to 2 Years
Maximum Serum Concentration (Cmax) of ZG006
Measured: Up to 2 Years
Area Under the Concentration-time Curve (AUC) Over the Dosing Interval for ZG006
Measured: Up to 2 Years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted17 Nov 2025
- Study start21 Apr 2026
- Primary completionDec 2028 (estimated)
- Study completionDec 2028 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Small Cell Lung CancerStudies of the same condition, open and under way.
- More trials run by Suzhou Zelgen Biopharmaceuticals Co.,LtdThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 100 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Suzhou Zelgen Biopharmaceuticals Co.,Ltd
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Jason Wu, Study chair, Suzhou Zelgen Biopharmaceuticals Co.,Ltd
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07231445
- Sponsor's protocol ID
- ZG006-004
- Status last verified
- Apr 2026
- First submitted
- 13 Nov 2025
- Last updated
- 28 Apr 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 28 Apr 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase Ib Study Evaluating the Safety and Efficacy of ZG006 in Combination With PD-1/PD-L1 Immune Checkpoint Inhibitors as First-Line Standard Therapy in Participants With Extensive Stage Small-Cell Lung Cancer
- ClinicalTrials.gov ID
- NCT07231445
- Acronym / sponsor ID
- ZG006-004
- Conditions
- Small Cell Lung Cancer
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 100 participants (estimated)
- Lead sponsor
- Suzhou Zelgen Biopharmaceuticals Co.,LtdIndustry (pharma, biotech, devices)
- Study start
- 21 Apr 2026 (actual)
- Primary completion
- Dec 2028 (estimated)
- Study completion
- Dec 2028 (estimated)
- First posted
- 17 Nov 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This is a randomized, multicenter, phase Ib study to evaluate the safety and efficacy of ZG006 combined with PD-1/PD-L1 immune checkpoint inhibitors (±chemotherapy) as first-line therapy in Participants with extensive stage small cell lung cancer.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Part 1：Group A | Experimental | Drug: ZG006, Drug: SerplulimabZG006 Q3W |
| Part 1：Group B | Experimental | Drug: ZG006, Drug: SerplulimabZG006 Q3W |
Who may qualify
- Ages
- 18 to 75 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- Participants with histologically or cytologically confirmed ES-SCLC.
- Fully understand the study and voluntarily sign the informed consent form;
- Male or female 18~75 years of age;
- Eastern Cooperative Oncology Group(ECOG) Performance Status of 0 or 1;
- Life expectancy ≥ 3 months;
Key exclusion criteria (1 listed)
- Participants were deemed unsuitable for participating in the study by the investigator for any reason.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| ZG006ZG006 will be administered as an IV infusion. | Drug | Part 1：Group A, Part 1：Group B |
| SerplulimabSerplulimab will be administered as an IV infusion. | Drug | Part 1：Group A, Part 1：Group B |
Primary outcome
Number of Participants Experiencing Dose-limiting toxicities (DLTs)
Time frame: Up to Day 28
Number of Participants Experiencing Treatment-emergent Adverse Events (TEAEs)
Time frame: Up to 2 Years
3 secondary outcomes
Objective Response Rate (ORR) per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1
Time frame: Up to 2 Years
Maximum Serum Concentration (Cmax) of ZG006
Time frame: Up to 2 Years
Area Under the Concentration-time Curve (AUC) Over the Dosing Interval for ZG006
Time frame: Up to 2 Years
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 28 Apr 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Jason Wu study chair
Suzhou Zelgen Biopharmaceuticals Co.,Ltd
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing ZG006 and Serplulimab in people with Small Cell Lung Cancer, run by Suzhou Zelgen Biopharmaceuticals Co.,Ltd at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 28 Apr 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Cong Zhang (17602176888, zhangc@zelgen.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Number of Participants Experiencing Dose-limiting toxicities (DLTs) (time frame: Up to Day 28). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Apr 2026; AzTrials last refreshed its copy on 7 Nov 2026.