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An Open-label Study of SG1827 Combined With Anti-PD-1/PD-L1 Antibody and Bevacizumab in Patients With Advanced Solid Tumors

A Phase 1b/2 Clinical Study to Evaluate the Safety, Tolerability, and Preliminary Efficacy of SG1827 for Injection in Combination With Anti-PD-1/PD-L1 Antibody and Bevacizumab in Patients With Advanced Malignant Solid Tumors

Status
Not yet recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07774611
Enrollment
180
Registered
2026-08-19
Start date
2026-09-22
Completion date
2028-12-31
Last updated
2026-08-19

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

Conditions

Advanced Solid Tumors

Brief summary

This multicenter, open-label Phase Ib/II study with dose escalation and expansion in Chinese patients with advanced solid tumors consists of Part A (SG1827 plus anti-PD-1/PD-L1) and Part B (SG1827 plus anti-PD-1/PD-L1 and bevacizumab), both evaluating safety, tolerability, PK/PD, immunogenicity, and antitumor efficacy.

Detailed description

This study is a multicenter, open-label, Phase Ib/II clinical trial with dose-escalation and dose-expansion components, conducted in Chinese patients with advanced malignant solid tumors. In Part A, participants will receive SG1827 in combination with an anti-PD-1/PD-L1 antibody; in Part B, participants will receive SG1827 in combination with an anti-PD-1/PD-L1 antibody and bevacizumab. Part A is designed to evaluate the safety, tolerability, pharmacokinetics/pharmacodynamics (PK/PD), immunogenicity, and anti-tumor efficacy of SG1827 plus an anti-PD-1/PD-L1 antibody in advanced solid tumors, while Part B is designed to evaluate the safety, tolerability, PK/PD, immunogenicity, and anti-tumor efficacy of SG1827 combined with an anti-PD-1/PD-L1 antibody and bevacizumab in the same patient population.

Interventions

DRUGSG1827

Intravenous infusion, once every three weeks

Intravenous infusion

DRUGbevacizumab

Intravenous infusion

Sponsors

Hangzhou Sumgen Biotech Co., Ltd.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

1. Age ≥18 years, male or female. 2. Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1. 3. Life expectancy ≥3 months. 4. Histologically or cytologically confirmed unresectable locally advanced or metastatic solid tumor. Participants enrolled in the dose escalation phase must have received prior systemic therapy, with disease progression or intolerance to the last line of treatment. 5. At least one measurable lesion per RECIST 1.1 criteria. 6. Adequate organ and bone marrow function. 7. Female participants of childbearing potential and male participants with partners of childbearing potential must use at least one accepted method of contraception during the study treatment period and for at least 5 months (150 days) after the last dose. 8. Male participants must refrain from sperm donation from the time of signing the informed consent form (ICF) until at least 5 months after the last dose.

Exclusion criteria

1. Prior treatment with immunotherapies targeting CTLA 4 and/or CD28 (or agents containing these targets). 2. Presence of active central nervous system (CNS) metastatic lesions. 3. Other malignant tumors within 5 years prior to the first dose. 4. Receipt of any of the following treatments or procedures: 1. Major surgery (other than diagnostic biopsy) within 28 days prior to the first dose; 2. Anti tumor macromolecular antibody therapy or other unmarketed investigational anti tumor therapies within 28 days prior to the first dose; anti tumor chemotherapy, endocrine therapy, or oral small molecule targeted therapy within 14 days prior to the first dose; traditional Chinese medicine preparations approved by the NMPA with anti tumor indications within 7 days prior to the first dose; 3. Curative radiotherapy within 28 days prior to the first dose; palliative radiotherapy is permitted within 14 days prior to the first dose, provided that all related AEs have resolved to ≤ Grade 1 (CTCAE v6.0), except for toxicities such as alopecia that are judged by the investigator to have no safety risk and not to violate other inclusion/

Design outcomes

Primary

MeasureTime frameDescription
AEsFrom first dose until 30 days after last dose of SG1827Number and percentage of AEs which is calculated by worst CTCAE grade by CTCAE 6.0

Countries

China

Contacts

CONTACTYue Song, Bachelor
songyue@sumgenbio.com+86 18511021364

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 20, 2026