Gastric Cancer Stage IIIPhase 2NCT07315035
QL1706-SOX vs SOX Alone as Neoadjuvant Therapy for Resectable Diffuse-Type Gastric Cancer
A Phase 2 study testing QL1706 (Iparomlimab/Tuvonralimab) and SOX Chemotherapy in people with Gastric Cancer Stage III, run by The First Affiliated Hospital with Nanjing Medical University at 1 site in China.
Trial summary
The goal of this randomized, open-label, phase II clinical trial is to determine whether adding the PD-1/CTLA-4 bispecific antibody QL1706 to standard SOX chemotherapy increases the pathological complete response rate in adults aged 18-75 years with resectable, locally advanced, diffuse-type, HER2-negative gastric… Read more about this study
- Who is it for?
- Ages 18 to 75 years
- Conditions the study is for
- Gastric Cancer Stage III
- What is being tested?
- QL1706 (Iparomlimab/Tuvonralimab) and SOX Chemotherapy
- Type of treatment
- Pill or oral medicine, Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 74 participants
- Where
- 1 siteChina
- Study dates
- 1 Jan 2026to 31 Dec 2030
- Phase
- Phase 2
- 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
- Histologically confirmed diffuse-type gastric adenocarcinoma (Lauren classification) with signet-ring cells ≥ 50 % of tumor volume HER2-negative by IHC or ISH per ASCO/CAP guidelines Clinical stage cT3-4aNxM0 (AJCC 8th ed.) on baseline EUS + contrast-enhanced CT/MRI; disease judged resectable by multidisciplinary team No prior gastric surgery, chemotherapy, radiotherapy, or immunotherapy for cancer Age 18-75 years; ECOG performance status 0-1 Adequate organ function (ANC ≥ 1.5 × 10⁹/L, platelet ≥ 100 × 10⁹/L, Hb ≥ 9 g/dL, ALT/AST ≤ 2.5 × ULN, TBIL ≤ 1.5 × ULN, creatinine ≤ 1.5 × ULN and calculated CrCl ≥ 60 mL/min, INR/PT ≤ 1.5 × ULN) within 14 days before randomization Left-ventricular ejection fraction ≥ 50 % by echocardiography; no clinically significant ECG abnormalities Negative serum β-hCG pregnancy test ≤ 7 days of first dose for women of child-bearing potential; agreement to use effective contraception through 6 months post-surgery Life expectancy ≥ 6 months Signed informed consent; able to comply with study procedures and follow-up
Who cannot join
- Mixed or intestinal Lauren histology; mucinous or hepatoid variants Active gastrointestinal bleeding or endoscopic evidence of major vessel invasion Other malignancy within 5 years (except curatively treated basal-cell carcinoma, cervical carcinoma in situ, or superficial bladder cancer) Prior exposure to any anti-PD-1, anti-PD-L1, anti-CTLA-4, or other T-cell co-stimulatory/antagonist agents Autoimmune disease requiring systemic immunosuppression within 2 years (e.g., prednisone > 10 mg/day equivalent) Receipt of live vaccine ≤ 30 days before first dose Known HIV-positive, active hepatitis B (HBsAg+ and HBV-DNA > 200 IU/mL), or hepatitis C infection (HCV RNA positive) Active tuberculosis or history of incompletely treated TB Severe cardiovascular disease: NYHA class ≥ II heart failure, unstable angina, myocardial infarction ≤ 6 months, uncontrolled arrhythmia, or uncontrolled hypertension (systolic > 160 mmHg or diastolic > 100 mmHg) Peripheral neuropathy ≥ grade 2 per NCI-CTCAE v5.0 Pulmonary disease requiring systemic steroids (e.g., ≥ grade 2 pneumonitis) or oxygen therapy Active infection requiring systemic antibiotics, antivirals, or antifungals ≤ 7 days before first dose Known hypersensitivity to oxaliplatin, fluoropyrimidines, or Chinese hamster ovary cell-derived products Pregnancy or lactation Concurrent participation in another interventional clinical trial Any condition that, in the investigator's opinion, would compromise safe completion of protocol therapy or accurate assessment of outcomes
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
First Affiliated Hospital with Nanjing Medical University
Nanjing, Jiangsu, 210029
Hao Xu, 86-02568306505, zhangyg0021@163.com
About this study
Official title: A Randomized, Controlled, Phase-II Trial of Neoadjuvant QL1706 (Iparomlimab /Tuvonralimab) Combined With SOX Versus SOX Alone Followed by Curative Gastrectomy in Patients With Locally Advanced Diffuse-Type Gastric Adenocarcinoma
The goal of this randomized, open-label, phase II clinical trial is to determine whether adding the PD-1/CTLA-4 bispecific antibody QL1706 to standard SOX chemotherapy increases the pathological complete response rate in adults aged 18-75 years with resectable, locally advanced, diffuse-type, HER2-negative gastric adenocarcinoma (cT3-4aNxM0). Participants will be randomly assigned (1:1) to receive 3-4 neoadjuvant cycles of QL1706 plus SOX or SOX alone every 3 weeks, followed by curative-intent gastrectomy with D2 lymphadenectomy, and will be monitored post-operatively every 3 months for 2 years and every 6 months thereafter for recurrence, survival, and safety.
- Conditions
- Gastric Cancer Stage III
- Being tested
- QL1706 (Iparomlimab/Tuvonralimab), SOX Chemotherapy
- Keywords
- QL1706, Diffused-type Gastric Cancer
- Medical subject headings
- Stomach Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
QL1706 (Iparomlimab/Tuvonralimab)Drug
QL1706 is a first-in-class, fixed-ratio bispecific monoclonal antibody produced in a single Chinese hamster ovary cell line that simultaneously targets PD-1 (IgG4 framework) and CTLA-4 (IgG1 framework) with an approximate 2:1 molar ratio. This molecular design delivers dual immune checkpoint blockade in one infusion, distinguishing it from separate-agent combinations such as nivolumab plus ipilimumab. In this study QL1706 is given at 5 mg/kg (actual body weight) as a 60-minute intravenous infusion on day 1 of each 21-day cycle, immediately followed by oxaliplatin 130 mg/m² (2-hour infusion) and oral S-1 (40-60 mg bid days 1-14). The sequence is repeated for 3-4 cycles before planned surgery; no intra-patient dose escalation or reduction is allowed, but infusion may be delayed ≤12 weeks for immune-related adverse events. The comparator arm receives identical SOX chemotherapy without any investigational antibody, ensuring that any difference in pathological outcome can be attributed spec
SOX ChemotherapyDrug
SOX chemotherapy consists of oxaliplatin 130 mg/m² delivered as a 2-hour intravenous infusion on day 1 plus oral S-1 (tegafur 40-60 mg, gimeracil and oteracil potassium in fixed 1:0.4:1 molar ratio) taken twice daily on days 1-14 of a 21-day cycle, repeated for 3-4 cycles before curative-intent gastrectomy. The S-1 dose is calculated by body-surface area: <1.25 m² → 40 mg, 1.25-1.5 m² → 50 mg, >1.5 m² → 60 mg per administration.
| Study group | Role | What they receive |
|---|---|---|
| QL1706+SOX | Experimental | QL1706 (Iparomlimab/Tuvonralimab) 5 mg/kg intravenous infusion on day 1 plus SOX (S-1 40-60 mg orally twice daily days 1-14 and oxaliplatin 130 mg/m² intravenous infusion on day 1) every 3 weeks for 3-4 cycles before curative gastrectomy. Receives: Drug: QL1706 (Iparomlimab/Tuvonralimab); Drug: SOX Chemotherapy |
| SOX | Active comparator | S-1 40-60 mg orally twice daily days 1-14 and oxaliplatin 130 mg/m² intravenous infusion on day 1 every 3 weeks for 3-4 cycles before curative-intent gastrectomy. Receives: Drug: SOX Chemotherapy |
What is being measured
The primary outcome is the main question the study is designed to answer.
Pathological complete response (pCR) rate
Pathological complete response (pCR) rate, defined as the proportion of participants who achieve ypT0N0 (absence of viable tumor cells in the resected primary tumor and all examined lymph nodes, Mandard TRG 1 or Becker grade 1) after completion of 3-4 cycles of protocol-specified neoadjuvant therapy and subsequent curative-intent gastrectomy, assessed by central review of H\&E-stained slides according to AJCC 8th edition criteria within 4 weeks of surgery.
Measured: Perioperative
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted2 Jan 2026
- Study start1 Jan 2026 (estimated)
- Primary completion31 Dec 2028 (estimated)
- Study completion31 Dec 2030 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Gastric Cancer Stage IIIStudies of the same condition, open and under way.
- 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 2
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- This is a single-center, parallel-group, superiority trial with a two-arm randomized design. After confirmation of eligibility, participants are allocated 1:1 by central computer-generated randomization (block size 4, stratified by baseline ECOG performance status 0 vs 1) to receive either QL1706 plus SOX (experimental arm) or SOX alone (control arm) as neoadjuvant therapy. Randomization is open-label; however, pathological response and surgical margin status are assessed by two independent gastrointestinal pathologists blinded to treatment assignment. No crossover is permitted. The study schema is fixed: three to four 3-week cycles of protocol-specified therapy, mandatory restaging within 2 weeks after cycle 3, and curative-intent gastrectomy scheduled 4-6 weeks after the last dose. Post-operative adjuvant therapy is investigator-determined and recorded, but does not influence the primary endpoint analysis. This model allows direct comparison of immune-chemotherapy versus chemotherapy
- Masking
- None (open label)
- Enrolment
- 74 participants (estimated)
Sponsor and investigators
- Lead sponsor
- The First Affiliated Hospital with Nanjing Medical University
- Sponsor type
- University, hospital or other
- Collaborators
- First Affiliated Hospital of Suzhou Medical College, The Affiliated Hospital of Xuzhou Medical University, The Affiliated Jiangning Hospital of Nanjing Medical University
- Responsible party
- Principal investigator, Hao Xu, The First Affiliated Hospital with Nanjing Medical University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07315035
- Sponsor's protocol ID
- QILIN-01
- Status last verified
- Dec 2025
- First submitted
- 5 Dec 2025
- Last updated
- 2 Jan 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 2 Jan 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Randomized, Controlled, Phase-II Trial of Neoadjuvant QL1706 (Iparomlimab /Tuvonralimab) Combined With SOX Versus SOX Alone Followed by Curative Gastrectomy in Patients With Locally Advanced Diffuse-Type Gastric Adenocarcinoma
- ClinicalTrials.gov ID
- NCT07315035
- Acronym / sponsor ID
- QILIN-01
- Conditions
- Gastric Cancer Stage III
- Keywords
- QL1706, Diffused-type Gastric Cancer
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 74 participants (estimated)
- Lead sponsor
- The First Affiliated Hospital with Nanjing Medical UniversityUniversity, hospital or other
- Collaborators
- First Affiliated Hospital of Suzhou Medical College, The Affiliated Hospital of Xuzhou Medical University, The Affiliated Jiangning Hospital of Nanjing Medical University
- Study start
- 1 Jan 2026 (estimated)
- Primary completion
- 31 Dec 2028 (estimated)
- Study completion
- 31 Dec 2030 (estimated)
- First posted
- 2 Jan 2026 (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.
The goal of this randomized, open-label, phase II clinical trial is to determine whether adding the PD-1/CTLA-4 bispecific antibody QL1706 to standard SOX chemotherapy increases the pathological complete response rate in adults aged 18-75 years with resectable, locally advanced, diffuse-type, HER2-negative gastric adenocarcinoma (cT3-4aNxM0). Participants will be randomly assigned (1:1) to receive 3-4 neoadjuvant cycles of QL1706 plus SOX or SOX alone every 3 weeks, followed by curative-intent gastrectomy with D2 lymphadenectomy, and will be monitored post-operatively every 3 months for 2 years and every 6 months thereafter for recurrence, survival, and safety.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
- Model description
- This is a single-center, parallel-group, superiority trial with a two-arm randomized design. After confirmation of eligibility, participants are allocated 1:1 by central computer-generated randomization (block size 4, stratified by baseline ECOG performance status 0 vs 1) to receive either QL1706 plus SOX (experimental arm) or SOX alone (control arm) as neoadjuvant therapy. Randomization is open-label; however, pathological response and surgical margin status are assessed by two independent gastrointestinal pathologists blinded to treatment assignment. No crossover is permitted. The study schema is fixed: three to four 3-week cycles of protocol-specified therapy, mandatory restaging within 2 weeks after cycle 3, and curative-intent gastrectomy scheduled 4-6 weeks after the last dose. Post-operative adjuvant therapy is investigator-determined and recorded, but does not influence the primary endpoint analysis. This model allows direct comparison of immune-chemotherapy versus chemotherapy
| Arm | Type | Receives |
|---|---|---|
| QL1706+SOX | Experimental | Drug: QL1706 (Iparomlimab/Tuvonralimab), Drug: SOX ChemotherapyQL1706 (Iparomlimab/Tuvonralimab) 5 mg/kg intravenous infusion on day 1 plus SOX (S-1 40-60 mg orally twice daily days 1-14 and oxaliplatin 130 mg/m² intravenous infusion on day 1) every 3 weeks for 3-4 cycles before curative gastrectomy. |
| SOX | Active comparator | Drug: SOX ChemotherapyS-1 40-60 mg orally twice daily days 1-14 and oxaliplatin 130 mg/m² intravenous infusion on day 1 every 3 weeks for 3-4 cycles before curative-intent gastrectomy. |
Who may qualify
- Ages
- 18 to 75 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- Histologically confirmed diffuse-type gastric adenocarcinoma (Lauren classification) with signet-ring cells ≥ 50 % of tumor volume HER2-negative by IHC or ISH per ASCO/CAP guidelines Clinical stage cT3-4aNxM0 (AJCC 8th ed.) on baseline EUS + contrast-enhanced CT/MRI; disease judged resectable by multidisciplinary team No prior gastric surgery, chemotherapy, radiotherapy, or immunotherapy for cancer Age 18-75 years; ECOG performance status 0-1 Adequate organ function (ANC ≥ 1.5 × 10⁹/L, platelet ≥ 100 × 10⁹/L, Hb ≥ 9 g/dL, ALT/AST ≤ 2.5 × ULN, TBIL ≤ 1.5 × ULN, creatinine ≤ 1.5 × ULN and calculated CrCl ≥ 60 mL/min, INR/PT ≤ 1.5 × ULN) within 14 days before randomization Left-ventricular ejection fraction ≥ 50 % by echocardiography; no clinically significant ECG abnormalities Negative serum β-hCG pregnancy test ≤ 7 days of first dose for women of child-bearing potential; agreement to use effective contraception through 6 months post-surgery Life expectancy ≥ 6 months Signed informed consent; able to comply with study procedures and follow-up
Key exclusion criteria (1 listed)
- Mixed or intestinal Lauren histology; mucinous or hepatoid variants Active gastrointestinal bleeding or endoscopic evidence of major vessel invasion Other malignancy within 5 years (except curatively treated basal-cell carcinoma, cervical carcinoma in situ, or superficial bladder cancer) Prior exposure to any anti-PD-1, anti-PD-L1, anti-CTLA-4, or other T-cell co-stimulatory/antagonist agents Autoimmune disease requiring systemic immunosuppression within 2 years (e.g., prednisone > 10 mg/day equivalent) Receipt of live vaccine ≤ 30 days before first dose Known HIV-positive, active hepatitis B (HBsAg+ and HBV-DNA > 200 IU/mL), or hepatitis C infection (HCV RNA positive) Active tuberculosis or history of incompletely treated TB Severe cardiovascular disease: NYHA class ≥ II heart failure, unstable angina, myocardial infarction ≤ 6 months, uncontrolled arrhythmia, or uncontrolled hypertension (systolic > 160 mmHg or diastolic > 100 mmHg) Peripheral neuropathy ≥ grade 2 per NCI-CTCAE v5.0 Pulmonary disease requiring systemic steroids (e.g., ≥ grade 2 pneumonitis) or oxygen therapy Active infection requiring systemic antibiotics, antivirals, or antifungals ≤ 7 days before first dose Known hypersensitivity to oxaliplatin, fluoropyrimidines, or Chinese hamster ovary cell-derived products Pregnancy or lactation Concurrent participation in another interventional clinical trial Any condition that, in the investigator's opinion, would compromise safe completion of protocol therapy or accurate assessment of outcomes
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 |
|---|---|---|
| QL1706 (Iparomlimab/Tuvonralimab)QL1706 is a first-in-class, fixed-ratio bispecific monoclonal antibody produced in a single Chinese hamster ovary cell line that simultaneously targets PD-1 (IgG4 framework) and CTLA-4 (IgG1 framework) with an approximate 2:1 molar ratio. This molecular design delivers dual immune checkpoint blockade in one infusion, distinguishing it from separate-agent combinations such as nivolumab plus ipilimumab. In this study QL1706 is given at 5 mg/kg (actual body weight) as a 60-minute intravenous infusion on day 1 of each 21-day cycle, immediately followed by oxaliplatin 130 mg/m² (2-hour infusion) and oral S-1 (40-60 mg bid days 1-14). The sequence is repeated for 3-4 cycles before planned surgery; no intra-patient dose escalation or reduction is allowed, but infusion may be delayed ≤12 weeks for immune-related adverse events. The comparator arm receives identical SOX chemotherapy without any investigational antibody, ensuring that any difference in pathological outcome can be attributed spec | Drug | QL1706+SOX |
| SOX ChemotherapySOX chemotherapy consists of oxaliplatin 130 mg/m² delivered as a 2-hour intravenous infusion on day 1 plus oral S-1 (tegafur 40-60 mg, gimeracil and oteracil potassium in fixed 1:0.4:1 molar ratio) taken twice daily on days 1-14 of a 21-day cycle, repeated for 3-4 cycles before curative-intent gastrectomy. The S-1 dose is calculated by body-surface area: <1.25 m² → 40 mg, 1.25-1.5 m² → 50 mg, >1.5 m² → 60 mg per administration. | Drug | QL1706+SOX, SOX |
Primary outcome
Pathological complete response (pCR) rate
Time frame: Perioperative
Pathological complete response (pCR) rate, defined as the proportion of participants who achieve ypT0N0 (absence of viable tumor cells in the resected primary tumor and all examined lymph nodes, Mandard TRG 1 or Becker grade 1) after completion of 3-4 cycles of protocol-specified neoadjuvant therapy and subsequent curative-intent gastrectomy, assessed by central review of H\&E-stained slides according to AJCC 8th edition criteria within 4 weeks of surgery.
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 2 Jan 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.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing QL1706 (Iparomlimab/Tuvonralimab) and SOX Chemotherapy in people with Gastric Cancer Stage III, run by The First Affiliated Hospital with Nanjing Medical University 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 1 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: opening soon, as of the sponsor's last update on 2 Jan 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 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
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 HAO Xu (86-02568306505, zhangyg0021@163.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Pathological complete response (pCR) rate (time frame: Perioperative). 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 2 Jan 2026.