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Brief Title: A Phase I Study of LX-039 Tablets
Official Title: A Phase I Study of LX-039 Tablets in Postmenopausal Patients With ER+, HER2- Advanced Breast Cancer After Failure of Endocrine Therapy
Study ID: NCT04097756
Brief Summary: This is a phase I dose escalation and expansion study in patients with ER+, HER2- advanced breast cancer to explore the tolerance, PK/PD(pharmacokinetics/pharmacodynamics) profiles and preliminary anti-tumor activity of different doses of LX-039 tablets. The trial consists of two parts, dose escalation and dose expansion. Part 1 is the dose escalation phase with initial 6 dose groups, and "3 + 3" design is used to explore MTD of the drug; Part 2 is the dose expansion phase with 2 \~ 3 doses selected for expansion according to the escalation results of Part 1, and more subjects are enrolled to further observe the tolerance and preliminary anti-tumor activity of the drug. After the completion of dose expansion, the recommended phase II dose (RP2D) will be determined after discussion based on the obtained tolerance and PK/PD data.
Detailed Description:
Minimum Age: 18 Years
Eligible Ages: ADULT, OLDER_ADULT
Sex: FEMALE
Healthy Volunteers: No
Fudan University Shanghai Cancer Center, Shanghai, Shanghai, China