Breast Cancer Clinical Trial
Official title:
Overcoming Therapy Resistance in ER+ Breast Cancer Patients: a Translational Project (OVERTuRE)
Patients presenting with a de novo diagnosis of luminal-like advanced breast cancer (ABC) or with disease recurrence after >12 months from the end of adjuvant ET, are generally candidate to a first line therapy with an aromatase inhibitor in association with a CDK4/6i. Disease recurrence in <12 months from the end of adjuvant ET defines the disease as "endocrine resistant" and identifies patients that should receive a first line therapy with the selective estrogen receptor degrader (SERD) Fulvestrant in association with the CDK4/6i Ribociclib, according to the results of the MONALEESA-3 trial. A significant percentage of ABC patients develops a primary resistance with disease progression within the first 6 months from the beginning of the treatment. Furthermore, another relevant percentage of patients initially responding to the therapy, will later develop a secondary resistance, thus progressing after a median of 2 years from the beginning of the treatment. Thereby, it is crucial to identify biomarkers that could be predictive of a response or a resistance to ET and/or CDK4/6i, to provide the best therapeutic strategy, tailored upon both clinico-pathological and molecular characteristics. Numerous pathways associated with resistance to CDK4/6i have been investigated by means of liquid biopsy analysis. The aim of this study is to identify potential biomarkers predictive of a clinical benefit in patients receiving a first line therapy with AI/fulvestrant (+/- LH-RH analogue) in association with a CDK4/6i for luminal-like advanced breast cancer.
Patients presenting with a de novo diagnosis of luminal-like advanced breast cancer (ABC) or with disease recurrence after >12 months from the end of adjuvant ET, are generally candidate to a first line therapy with an aromatase inhibitor (+/- LH-RH analogue depending from the menopausal status) in association with a CDK4/6i. Disease recurrence in <12 months from the end of adjuvant ET defines the disease as "endocrine resistant" and identifies patients that should receive a first line therapy with the selective estrogen receptor degrader (SERD) Fulvestrant in association with the CDK4/6i Ribociclib, according to the results of the MONALEESA-3 trial. The choice of the endocrine backbone and of the CDK4/6i is mostly influenced by the patient's clinical characteristics and by disease factors. However, a significant percentage of ABC patients develops a primary resistance with disease progression within the first 6 months from the beginning of the treatment. Furthermore, another relevant percentage of patients initially responding to the therapy, will later develop a secondary resistance, thus progressing after a median of 2 years from the beginning of the treatment. Thereby, it is crucial to identify biomarkers that could be predictive of a response or a resistance to ET and/or CDK4/6i, to provide the best therapeutic strategy, tailored upon both clinico-pathological and molecular characteristics. Numerous pathways associated with resistance to CDK4/6i have been investigated by means of liquid biopsy analysis. The aim of this study is to identify potential biomarkers predictive of a clinical benefit in patients receiving a first line therapy with AI/fulvestrant (+/- LH-RH analogue) in association with a CDK4/6i for luminal-like advanced breast cancer. ;
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