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SI-B001 Combined With Osimertinib Mesylate Tablets in the Treatment of Recurrent Metastatic Non-small Cell Lung Cancer.

A Phase II/III Clinical Study to Evaluate the Efficacy and Safety of SI-B001 in Combination With Osimertinib Mesylate Tablets in the Treatment of Recurrent and Metastatic Non- Small Cell Lung Cancer

Status
Active, not recruiting
Phases
Phase 2Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05020769
Enrollment
14
Registered
2021-08-25
Start date
2022-01-06
Completion date
2025-12-31
Last updated
2025-09-26

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

Conditions

Non-small Cell Lung Cancer

Keywords

NSCLC

Brief summary

This multi-center, open label Phase II/III clinical study is performed in patients with locally advanced/metastatic NSCLC progressed on prior EGFR-TKI treatment or with non TKI-sensitizing mutation or patients with EGFR exon20ins mutation. This study is investigating the safety and efficacy of SI-B001 at monotherapy RP2D or lower combined with Osimertinib in patients with locally advanced or metastatic NSCLC.

Interventions

SI-B001 is administered by intravenous drip once weekly (QW). 120 min ± 10 min after the first intravenous drip, if the infusion reaction is tolerable during the first dose, the subsequent infusion can be completed within 60-120 min (unless agreed or required by the investigator, the infusion time can be extended).

DRUGOsimertinib

Osimertinib is administered at the recommended dose of 80mg daily.

Sponsors

Sichuan Baili Pharmaceutical Co., Ltd.
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Voluntarily sign the informed consent and follow the requirements of the protocol; 2. Male or female; 3. Age: ≥ 18 years; 4. Expected survival time ≥ 3 months; 5. Patients with locally advanced or metastatic non-small cell lung cancer (NSCLC) confirmed by histopathology and/or cytology, T790M-negative, Exon20ins mutation resistant to the third generation EGFR TKI after the first or second line treatment, or resistance to the first or second generation TKI after the first line treatment; 6. Consent to provide an archived tumor tissue specimen or fresh tissue sample (an FFPE block or approximately 6-12 white slides with a size of 5μm) from the primary or metastatic tumor within 6 months of the date of consent. Participants who were unable to provide tumor tissue samples could be enrolled if they met other inclusion and

Exclusion criteria

after evaluation by investigators. 7. Must have at least one measurable lesion as defined by RECISTv1.1; 8. Performance status score ECOG0 or 1; 9. Toxicity from previous antineochemical therapy has returned to grade 1 or less as defined by NCI-CTCAE v5.0 (asymptomatic laboratory abnormalities such as elevated ALP, hyperuricemia, elevated serum amylase/lipase, and elevated blood glucose were considered by the investigator, and toxicity with no safety risk was judged by the investigator; Except for alopecia, grade 2 peripheral neurotoxicity, and hypothyroidism stable with hormone replacement therapy). 10. No severe cardiac dysfunction, left ventricular score ≥ 50%; 11. The level of organ function must meet the following criteria: 1. Bone marrow function: Absolute neutrophil count (ANC) ≥ 1.5 × 10\^9/L, platelet count ≥ 80 × 10\^9/L, hemoglobin ≥ 90 g/L; 2. Liver function: TBIL ≤ 1.5ULN (total bilirubin ≤ 3ULN for subjects with Gilbert's syndrome, liver cancer or liver metastases); AST and ALT ≤ 2.5ULN for subjects without liver metastases; AST and ALT ≤ 5.0ULN for subjects with liver metastases; 3. Renal function: creatinine (Cr) ≤ 1.5ULN, or creatinine clearance (Ccr) ≥ 50 mL/min (according to CockcroftandGault formula). 12. Coagulation function: international normalized ratio (INR) ≤ 1.5 × ULN, and activated partial thromboplastin time (APTT) ≤ 1.5ULN; 13. Urine protein ≤ 2 + (measured by dipstick) or \< 1000 mg/24 h (urine); 14. Premenopausal women of childbearing potential must have a negative serum or urine pregnancy test 7 before starting treatment and must be non-lactating; all patients (male or female) should take adequate barrier contraception measures throughout the treatment cycle and 6 months after the end of treatment.

Design outcomes

Primary

MeasureTime frameDescription
ORRUp to approximately 24 monthsObjective Response Rate
Optimal combination dose (only Phase IIa)Up to approximately 24 monthsOptimal combination dose for SI-B001 and Osimertinib (only IIa)

Secondary

MeasureTime frameDescription
PFSUp to approximately 24 monthsProgression-free Survival
DCRUp to approximately 24 monthsDisease Control Rate
DORUp to approximately 24 monthsDuration of Response
TEAEUp to approximately 24 monthsTreatment Emergent Adverse Events
CmaxUp to approximately 24 monthsMaximum serum concentration
TmaxUp to approximately 24 monthsTime to maximum serum concentration
CtroughUp to approximately 24 monthsMinimum serum concentration
ADAUp to approximately 24 monthsanti-SI-B001 antibody

Countries

China

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026