FUSCC Refractory TNBC Umbrella (FUTURE)

Precision Treatment of Refractory Triple Negative Breast Cancer Based on Molecular Subtyping --FUSCC-TNBC- Umbrella Trial

This is a Phase Ib/II, open-label, multi-center umbrella study evaluating the efficacy and safety of multiple targeted treatment in patients with refractory metastatic TNBC.The specific grouping of patients' depends on FUSCC 500+ gene panel testing and IHC subtype staining.

This is a Phase Ib/II, open-label, multi-center,umbrella study evaluating the efficacy and safety of multiple targeted treatment in patients with metastatic TNBC who had disease progression during or following standard treatment with chemotherapy(anthracyclines,taxanes,platinums, vinorelbine,capecitabine,and gemcitabine included).300-400 patients will be screened and eligible participants will enter different treatment arms according to their molecular subtype (IHC staining) and FUSCC 500+ gene panel testing results. These tests would be done on their rebiopsy tumor specimen. Specifically, as to TNBC molecular subtyping,FUSCC data identified the genomic aberrations that drive each TNBC subtype by applying an integrative analysis combining somatic mutation, copy number aberrations (CNAs) and gene expression profiles, which classified TNBC patients into four subtypes, namely luminal androgen receptor (LAR), immunomodulatory (IM), basal-like immune suppressed (BLIS), and mesenchymal-like (MES). Then, FUSCC conducted a IHC subtyping model to replace complex genomic sequencing, which have been validated in FUSCC cohort.FUSCC 500+ gene panel was developed combining public database(TCGA, METABRIC, 560WES, MSKCC-IMPACT ect.) and FUSCC private TNBC database.New treatment arms may be added and/or existing treatment arms may be closed during the course of the study on the basis of ongoing clinical efficacy and safety as well as the current treatments available.

Inclusion Criteria:

• ECOG Performance Status of 0, 1, or 2
• Metastatic or locally advanced, histologically documented TNBC (absence of HER2, ER, and PR expression)
• Radiologic/objective evidence of recurrence or disease progression after available standard chemotherapy regimens(anthracyclines,taxanes, platinums, vinorelbine,capacitabine, and gemcitabine included) for metastatic breast cancer(MBC)
• Availability of a representative tumor specimen that is suitable for rebiopsy, IHC staining and gene sequencing
• Adequate hematologic and end-organ function, laboratory test results, obtained within 14 days prior to initiation of study treatment.
• For women of childbearing potential: agreement to remain abstinent (refrain from heterosexual intercourse) or use contraceptive measures as outlined for each specific treatment arm
• Measurable disease according to Response Evaluation Criteria in Solid Tumors v1.1 (RECIST v1.1)
• have the cognitive ability to understand the protocol and be willing to participate and to be followed up.

Exclusion Criteria:

• Symptomatic, untreated, or actively progressing CNS metastases
• Active or history of autoimmune disease or immune deficiency
• Significant cardiovascular disease
• History of malignancy other than breast cancer within 5 years prior to screening, with the exception of those with a negligible risk of metastasis or death
• Treatment with chemotherapy, radiotherapy,immunotherapy or surgery (outpatient clinic surgery excluded)within3 weeks prior to initiation of study treatment.
• Pregnancy or breastfeeding, or intention of becoming pregnant during the study