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Phase II clinical study of paclitaxel polymer micelles combined with ivocizumab in the treatment of relapsed/refractory small cell lung cancer after failure of previous platinum-based chemotherapy and anti-PD-1/PD-L1 monoclonal antibody therapy

Phase II clinical study of paclitaxel polymer micelles combined with ivocizumab in the treatment of relapsed/refractory small cell lung cancer after failure of previous platinum-based chemotherapy and anti-PD-1/PD-L1 monoclonal antibody therapy

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600129318
Enrollment
Unknown
Registered
2026-08-03
Start date
2026-08-03
Completion date
Unknown
Last updated
2026-08-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Relapsed or refractory small cell lung cancer that has failed previous platinum-based chemotherapy and anti-PD-1/PD-L1 monoclonal antibody treatment

Interventions

Experimental arm:Paclitaxel polymeric micelles combined with ivonescimab

Sponsors

Sun Yat-sen University Cancer Center
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1. Voluntarily sign the informed consent form and follow the protocol requirements; 2. Age >= 18 years; 3. Expected survival time >= 3 months; 4. Patients with recurrent small cell lung cancer confirmed by histology or cytology who have failed platinum-containing chemotherapy and PD-1/PD-L1 monoclonal antibody therapy; 5. Must have at least one measurable lesion according to RECIST v1.1 criteria; 6. ECOG performance status score of 0 or 1; 7. Toxicities from previous anti-tumor treatments have recovered to = 50%; 9. Key organ functions must meet the following standards: (1) Bone marrow function: absolute neutrophil count (ANC) >= 1.5 x 10^9/L, platelet count >= 100 x 10^9/L, hemoglobin >= 90 g/L; (2) Liver function: total bilirubin (TBIL) = 50 mL/min (according to Cockcroft and Gault formula); (4) Coagulation: International Normalized Ratio (INR) = 50%; 10. Women of childbearing potential must have a serum pregnancy test within 7 days before starting treatment, which must be negative, and must not be breastfeeding; all participants must use effective barrier contraception throughout the treatment period and for 6 months after finishing treatment.

Exclusion criteria

Exclusion criteria: 1. Known history of hypersensitivity to polymer micelle or paclitaxel and ivoximab, with active or non-active excipients, or to drugs with similar structures or classes to the investigational drug; 2. Previous systemic treatment with taxane drugs and/or anti-vascular endothelial growth factor (VEGF) monoclonal antibodies; 3. Patients who received any of the following treatments prior to the first administration of the study drug: (1) Major surgery has been performed within 28 days prior to the first administration of the study drug (in China, the definition of major surgery refers to Level 3 and Level 4 surgeries as stipulated in the 'Administrative Measures for Clinical Application of Medical Technology' effective May 1, 2009; see Appendix 5 for details); (2) Within 4 weeks prior to the first administration of the study drug or within 5 half-lives (whichever is shorter), have used chemotherapy, targeted therapy, biologics, immunotherapy, radical radiotherapy, major surgery, or large-area radiotherapy (bone marrow radiotherapy exceeding 30% or extensive irradiation has been performed), used small-molecule targeted therapy (including small molecule tyrosine kinase inhibitors) within 5 days, or used palliative radiotherapy within 2 weeks (but palliative radiotherapy for bone lesions is permitted); (3) Patients who have received cytochrome P450 3A enzyme (CYP3A) and CYP2C enzyme inhibitors or inducers within 7 days prior to the first administration of the study drug, or who require continued treatment with these drugs during the study period (see Appendix 6 for the list of medications); (4) Patients who have received TCM or proprietary Chinese medicine preparations indicated for antitumor treatment within 7 days prior to the first administration of the study drug, or who require continued treatment with these drugs during the study period (see Appendix 7 for the list of drugs); (5) Patients currently receiving medications known to prolong the QT interval or may cause torsion of the tip ventricular tachycardia, and who require continued treatment during the study period (see Appendix 8 for the list of medications); 4. Presence of spinal cord compression or symptomatic central nervous system (CNS) metastasis; Except for asymptomatic patients who did not require steroid treatment for 14 days or more prior to the first administration of the investigational drug; Patients who have received local radiotherapy for CNS metastases must be enrolled after CNS metastasis symptoms have stabilized for at least 14 days after radiotherapy ends; 5. Uncontrollable pleural effusion, pericardial effusion, or ascites requiring repeated drainage; 6. Imaging studies show that the tumor has invaded or enveloped major vessels in the abdomen, chest, neck, or pharynx, except where investigators believe it does not affect patient enrollment and medication; 7. Subjects with clinically obvious bleeding or obvious bleeding tendency within 3 weeks prior to signing the informed consent form, such as hemoptysis (defined as bright red blood or up to half a teaspoon), gastrointestinal bleeding, hemorrhagic gastric ulcer, etc.; 8. Patients with inflammatory bowel disease (such as Crohn's disease, ulcerative colitis, etc.), history of extensive bowel resection, history of immune enteritis, presence of intestinal obstruction, chronic diarrhea, or Gilbert's syndrome; 9. Having had other malignant tumors or a history of other malignancies within the past 5 years, e

Design outcomes

Primary

MeasureTime frame
Objective response rate;

Secondary

MeasureTime frame
Disease Control Rate (DCR);adverse event;

Countries

China

Contacts

Public ContactShaodong Hong

Sun Yat-sen University Cancer Center

hongshd@sysucc.org.cn+86 159 2052 7656

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Aug 25, 2026