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A Clinical Study of YL205 in Patients With Advanced Solid Tumors

Phase 1
Recruiting
Conditions
Advanced Solid Tumors
Interventions
Drug: intravenous (IV) infusion
Registration Number
NCT06459973
Lead Sponsor
MediLink Therapeutics (Suzhou) Co., Ltd.
Brief Summary

This study is a multicenter, open-label, phase I/II study of YL205 in China to evaluate the safety, tolerability, PK characteristics and preliminary efficacy of YL205 in the following selected patients with advanced solid tumors.

Detailed Description

Not available

Recruitment & Eligibility

Status
RECRUITING
Sex
All
Target Recruitment
252
Inclusion Criteria
    1. Subjects who are informed of relevant information of the study prior to initiation of the study and voluntarily sign and date on the informed consent form (ICF).

    2. Age ≥18 years. 3) Be willing to follow and be able to complete all the study procedures. 4) Body mass index (BMI) within the range of 18 to 32 kg/m2, and body weight ≥45kg for female subjects.

    5) Patients with histologically or cytologically confirmed locally advanced or metastatic ovarian cancer (OC), non-squamous non-small cell lung cancer (NSQ NSCLC), renal cell carcinoma (RCC), endometrial cancer (EC), or other Napi2b-overexpressing tumors。 6) Patients with positive Napi2b test results at the central laboratory. 9) At least one radiologically evaluable lesion for subjects in Part 1; At least one measurable extracranial lesion (non-radiation fields) for subjects in Part 2 and Part 3.

    1. Expected survival ≥3 months. 11) Female subjects of childbearing potential must agree to take effective contraceptive measures and must not undergo egg donation or egg retrieval for their own use from screening throughout the study period and for at least 6 months after the last dose of the investigational drug. Male subjects must agree to take effective contraceptive measures and must not undergo sperm cryopreservation or sperm donation from screening throughout the study period and for at least 6 months after the last dose of the investigational drug.

    2. subjects must provide tumor samples. 13) Subjects who are capable of and willing to comply with the visits and procedures stipulated in the study protocol.

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Exclusion Criteria
    1. Subjects with a treatment history with drugs targeting Napi2b. 2) Subjects with a history of intolerance to topoisomerase I inhibitors or ADC therapy.

    2. Subjects who are participating in another clinical study, with the exception an of observational (non-interventional) clinical study or the follow-up period of an interventional study.

    3. Subjects with an insufficient washout period from the previous anti-tumor therapy to the first dose.

    4. Subjects who received radiotherapy, including palliative stereotactic radiotherapy on the abdomen, within 4 weeks prior to the first dose.

    5. Subjects who received major surgery within 4 weeks prior to the first dose or those who plan to receive major surgery during the study.

    6. Subjects who received allogeneic bone marrow transplantation or solid organ transplantation.

    7. Subjects who received systemic steroids or other immunosuppressive treatment within 2 weeks prior to the first dose of the investigational drug.

    8. Subjects who received any live vaccine within 4 weeks prior to the first dose or those who plan to receive live vaccines during the study.

    9. Subjects with a medical history of leptomeningeal carcinoma or cancerous meningitis.

    10. Subjects with brain metastasis or spinal cord compression. 12) Subjects with uncontrolled or clinically significant cardiovascular and cerebrovascular diseases.

    11. Subjects who were diagnosed with Gilbert's syndrome. 14) Subjects with significantly symptomatic or unstable effusion in the third space requiring repeated drainage.

    12. Subjects with medical history of gastrointestinal perforation and/or fistula within 6 months prior to the first dose, or active gastric ulcers, duodenal ulcer, colitis ulcerative, or other gastrointestinal disorders that may cause hemorrhage or perforation in the opinion of the investigator.

    13. Subjects with serious infection (Grade ≥3 as per NCI CTCAE v5.0) prior to the first dose.

    14. Subjects with human immunodeficiency virus (HIV), active hepatitis B virus (HBV) or hepatitis C virus (HCV) infection; subjects with positive syphilis antibody and a positive titer result.

    15. Subjects with unresolved toxicity caused by previous anti-tumor therapy. 20) Subjects with a history of serious allergic reactions to drugs, inactive ingredients in drug products, or other monoclonal antibodies.

    16. Female subjects who are pregnant as confirmed by a pregnancy test within 3 days prior to the first dose, or lactating women.

    17. Subjects who have any diseases, medical conditions, organ system dysfunction, or social conditions.

    18. Subjects with multiple primary malignancies within 5 years prior to the signing of the ICF, except for fully resected non-melanoma skin cancer, radically treated carcinoma in situ, or other radically treated solid tumors.

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Study & Design

Study Type
INTERVENTIONAL
Study Design
SEQUENTIAL
Arm && Interventions
GroupInterventionDescription
Phase Ia: Dose escalation portionintravenous (IV) infusionYL205 is provided as the lyophilized powder, 160 mg/vial. Adcanced solid tumors patients will be given YL205 by intravenously once every 3 weeks (Q3W) as a cycle at several dose levels.
Phase Ib: Dose expansion portionintravenous (IV) infusionYL205 is provided as the lyophilized powder, 160 mg/vial. Adcanced solid tumors patients will be given YL205 by intravenously once every 3 weeks (Q3W) as a cycle at no less than two dose levels.
Phase II: Cohort expansion portionintravenous (IV) infusionYL205 is provided as the lyophilized powder, 160 mg/vial. Adcanced solid tumors patients will be given YL205 by intravenously once every 3 weeks (Q3W) as a cycle at RP2D.
Primary Outcome Measures
NameTimeMethod
To evalue the DLTsApproximately within 36 months
To evalue the TEAEsApproximately within 36 months

Treatment Emergent Adverse Event

To evalue the TRAEsApproximately within 36 months

Treatment Related Adverse Event

To evalue the serious adverse events (SAEs)Approximately within 36 months
Assessed ORR (the proportion of CR and PR) by the investigator per RECIST v1.1Approximately within 36 months
Determination of the MTD of YL205 in the pivotal clinical studyApproximately within 36 months
Determination of the RED of YL205 in the pivotal clinical studyApproximately within 36 months
Determination of the RP2D of YL205 in the pivotal clinical studyApproximately within 36 months
Secondary Outcome Measures
NameTimeMethod
Characterize the PK parameter AUCApproximately within 36 months

area under curve (AUC)

Characterize the PK parameter CmaxApproximately within 36 months

maximum concentration (Cmax)

Characterize the PK parameter CtroughApproximately within 36 months

minimum concentration at trough (Ctrough)

Characterize the PK parameter VdApproximately within 36 months

volume of distribution (Vd)

Characterize the PK parameter CLApproximately within 36 months

plasma clearance (CL)

Characterize the PK parameter TmaxApproximately within 36 months

time to maximum concentration (Tmax)

Characterize the PK parameter t1/2Approximately within 36 months

half-life (t1/2)

Assessed the disease control rate (DCR) per RECIST v1.1Approximately within 36 months

(defined as the proportion of CR, PR, or stable disease (SD))

Assessed the duration of response (DOR) per RECIST v1.1Approximately within 36 months
Assessed the time to response (TTR) per RECIST v1.1Approximately within 36 months
Assessed the progression free survival (PFS) per RECIST v1.1Approximately within 36 months
Assessed the depth of response (DpR) per RECIST v1.1Approximately within 36 months

the percentage change in target lesion size

Assessed the overall survival (OS) per RECIST v1.1Approximately within 36 months
Evaluate the corelaton between different levels of Napi2B expression and the sum of CR rate, PR rate and SD rateApproximately within 36 months

Trial Locations

Locations (1)

Jilin Provincial Cancer Hospital

🇨🇳

Changchun, Jilin, China

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