An International, Multi-Center, Open-label Phase I Study to Evaluate the Tolerance, Pharmacokinetics, and Anti-Tumor Effects of BL0175 Injection in Postmenopausal Female Adults With HR-positive, Locally Advanced or Metastatic Cancer
The goal of this clinical trial is to learn if the investigational drug BL0175 works to treat adult postmenopausal women with hormone receptor (HR)-positive, human epidermal growth factor receptor (HER2)-negative locally advanced or metastatic breast cancer, ovarian cancer and endometrial cancer. It will also learn about the safety of BL0175. The main questions it aims to answer are: * Does the investigational drug BL0175 is safe for participants after dosed -multiple times? * Which is the highest safety dose of BL0175 after multiple dose? * What medical problems do participants have when using BL0175? * Does the investigational drug BL0175 works for participants after dosed -multiple times?
• Volunteer to participate in the study, be able to understand the requirements of a clinical study, and willingness to sign a written informed consent form.
• Age ≥ 18 years.
• HR-positive, HER2-negative (characterized by the absence of HER2 expression and the presence of ER and/or PR expression) locally advanced or metastatic breast cancer (histological or cytological proven diagnosis) in postmenopausal women with disease progression during or following endocrine therapy, or HR-positive, locally advanced or metastatic ovarian cancer or endometrial cancer in postmenopausal women that progressed during or following prior standard of care therapy. Note: to be included in this study, patients must have received prior treatment with a CDK4/6 inhibitor.
• Patients with at least one measurable or evaluable lesion: At least one lesion (measurable and/or non-measurable) that can be accurately assessed by CT/MRI/plain x-ray at baseline and follow up visit.
• Note: Measurable lesions cannot be selected from the following sites in principle: having received prior radiotherapy or having received other local therapy. If a target lesion at a site that has received prior radiotherapy or other local therapy is the only optional lesion, the progression of the lesion shall be confirmed by the investigator.
• Eastern Cooperative Oncology Group (ECOG) performance status score 0 or 1 at screening.
• Life expectancy period ≥ 12 weeks.