A Clinical Study of SI-B001 in Combination With Paclitaxel in the Treatment of Recurrent and Metastatic HNSCC

NCT05054439 | Active Not Recruiting Phase 2

• 1 other identifier: SI-B001_206
• Study Type: interventional
• Target: 42
• Locations: 1 country
• Sites: 7

Brief Summary

This multi-center, open label phase II clinical study is performed in patients with relapsed metastatic head and neck squamous cell carcinoma (non-nasopharyngeal carcinoma) progressed on prior 1st or 2nd line with anti-PD-1 mab ± platinum-based chemotherapy. This study is investigating the safety and efficacy of SI-B001 at optimal combination dose with paclitaxel in patients.

Conditions

Head and Neck Squamous Cell Carcinoma

Keywords

HNSCC

Outcome Measures

Primary Outcomes (1)

• ORR

  (Objective Response Rate )

  Up to 2 years

Secondary Outcomes (8)

• Tmax

  Up to 2 weeks

• PFS

  Up to 2 years

• DCR

  Up to 2 years

• OS

  Up to 2 years

• TEAE

  Up to 2 years

Study Arms (1)

SI-B001 combined with paclitaxel

EXPERIMENTAL

SI-B001 in combination with paclitaxel for the treatment of recurrent metastatic head and neck squamous cell carcinoma (non-nasopharyngeal carcinoma) with disease progression or intolerance.； The patient had previously received anti-PD-1 mab ± platinum-based chemotherapy； Patients' previous treatment line should be ≤2L.

Drug: SI-B001; Drug: Paclitaxel

Interventions

SI-B001 DRUG

Si-b001 is administered by intravenous drip once a week (QW). The first intravenous infusion is 120 min±10min. If the infusion reaction can be tolerated during the first infusion, the subsequent infusion can be completed in 60-120 min.

SI-B001 combined with paclitaxel

Paclitaxel DRUG

The dosage of paclitaxel was 80mg/m2 QW. SI-B001 and paclitaxel were used on the same day. After SI-B001 infusion, paclitaxel was pretreated and injected for no less than 3 hours.

SI-B001 combined with paclitaxel

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• The participants could understand and sign the informed consent form and must participate voluntarily.
• No gender limit;
• Age: ≥18 years old
• Locally advanced squamous cell carcinoma of the head and neck confirmed by histology or pathology as recurrent metastatic or without indications of radical local treatment;
• Patients who failed or were intolerant to previous anti-PD-1 monoclonal antibody, platinum-containing chemotherapy or anti-PD-1 monoclonal antibody monotherapy Treatment failure of PD-1 refers to disease progression during or after PD-1 treatment;
• Failure of platinum-containing chemotherapy refers to:
• disease progression during or after platinum-containing chemotherapy;
• recurrence or disease progression within 6 months of platinum-containing multi-mode therapy;
• Previously received only ≤ 2-line treatment for recurrent and metastatic squamous cell carcinoma of the head and neck;
• Agree to provide tumor tissue samples (FFPE block or 10 unstained sections of 5μm size) or fresh tissue samples that have been archival within 1 year of primary or metastatic lesion. If the patient fails to provide them, they can be included after the investigator's judgment;
• There must be at least one measurable lesion in accordance with the RECIST V1.1 definition. Tumor lesions located in the area of previous radiotherapy or other local regional treatment sites are generally not measurable unless there is definite progression of the lesion or the lesion persists three months after radiotherapy;
• Physical fitness ECOG score 0 or 1;
• Toxicity of previous antitumor therapy has returned to ≤1 as defined by NCI-CTCAE V5.0 (except for toxicity that the investigators judged to be of no safety risk, such as hair loss, grade 2 peripheral neurotoxicity, and stabilized hypothyroidism after hormone replacement therapy);
• Organ function levels must meet the following requirements and meet the following standards:
• Bone marrow function: absolute neutrophil count (ANC)≥1.5×10\*9/L, platelet count ≥100×10\*9/L, hemoglobin ≥90 g/L;

You may not qualify if:

• Squamous cell carcinoma with primary site of nasopharynx or skin;
• Have received chemotherapy, radiotherapy, biotherapy, endocrine therapy, immunotherapy and other anti-tumor therapy within 4 weeks prior to the first use of the study drug, except the following:
• Nitrosorea or mitomycin C within 6 weeks before the first administration of the study drug;
• Oral fluorouracil and small molecule targeted drugs are 2 weeks before the first administration of the study drug or within the 5 half-lives of the drug (whichever is longer);
• The traditional Chinese medicines with anti-tumor indications were within 2 weeks before the first use of the study drug;
• Received an unmarketed clinical investigational drug or treatment within 4 weeks prior to the first use of the investigational drug;
• Has undergone major organ surgery (excluding needle biopsy, tracheotomy, gastrostomy, etc.) or has significant trauma within 4 weeks before the first use of study drugs, or needs to undergo elective surgery during the trial;
• Patients with prior use of paclitaxel or albumin paclitaxel or paclitaxel liposome;
• Previous recipients of allogeneic hematopoietic stem cell transplantation or organ transplantation;
• A history of serious cardiovascular and cerebrovascular diseases, including but not limited to:
• Severe cardiac rhythm or conduction abnormalities, such as ventricular arrhythmias requiring clinical intervention, grade iii atrioventricular block, etc.
• In the resting state, QT interval was prolonged (QTc \> 450 msec in men or QTc \> 470 msec in women).
• Acute coronary syndrome, congestive heart failure, aortic dissection, stroke or other grades 3 or higher cardio-cerebrovascular events within 6 months prior to the first administration;
• New York Heart Association (NYHA) heart function grade ≥II heart failure;
• Active autoimmune diseases and inflammatory diseases, such as systemic lupus erythematosus, systemic treatment of psoriasis, rheumatoid arthritis, inflammatory bowel disease, and Hashimoto's thyroiditis, etc., with the exception of type I diabetes, only replacement therapy can control hypothyroidism, no systemic treatment of skin disease (e.g., vitiligo, psoriasis);

Sponsors & Collaborators

• Sichuan Baili Pharmaceutical Co., Ltd.: lead

Study Sites (7)

The Second Affiliated Hospital of Guilin Medical University

Guilin, Guangxi, China

Location

The Affiliated Cancer Hospital of Guizhou Medical University

Guiyang, Guizhou, China

Location

Union Hospital Tongji Medical College， Huazhong University of Science and Technology

Wuhan, Hubei, China

Location

Hunan Cancer Hospital

Changsha, Hunan, China

Location

Shanghai Oriental Hospital

Shanghai, Shanghai Municipality, 200120, China

Location

West China Hospital，Sichuan University

Chengdu, Sichuan, China

Location

Zhejiang Cancer Hospital

Hangzhou, Zhejiang, China

Location

MeSH Terms

Conditions

Squamous Cell Carcinoma of Head and Neck

Interventions

Paclitaxel

Condition Hierarchy (Ancestors)

Carcinoma, Squamous Cell; Carcinoma; Neoplasms, Glandular and Epithelial; Neoplasms by Histologic Type; Neoplasms; Head and Neck Neoplasms; Neoplasms by Site

Intervention Hierarchy (Ancestors)

Taxoids; Cyclodecanes; Cycloparaffins; Hydrocarbons, Alicyclic; Hydrocarbons, Cyclic; Hydrocarbons; Organic Chemicals; Diterpenes; Terpenes

Study Design

• Study Type: interventional
• Phase: phase 2
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SEQUENTIAL
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: August 22, 2021
• First Posted: September 23, 2021
• Study Start: December 22, 2021
• Primary Completion: December 1, 2025
• Study Completion: December 1, 2025
• Last Updated: September 26, 2025

Record last verified: 2025-09

Locations

CN (7)