Therapeutic Response Statement (Sensitivity)
This therapeutic response statement supports the relationship that HER2-negative, PR positive status confers therapeutic sensitivity to Letrozole, Ribociclib in patients with Invasive Breast Carcinoma.
The European Medicines Agency (EMA) has authorized ribociclib in combination with an aromatase inhibitor or fulvestrant as an initial endocrine-based therapy for the treatment of patients who are women with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative locally advanced or metastatic breast cancer, or in women who have received prior endocrine therapy. In pre- or perimenopausal women, the endocrine therapy should be combined with a luteinising hormone-releasing hormone (LHRH) agonist. This indication is based on three clinical trials: MONALEESA-2, MONALEESA-3, and MONALEESA-7, and MONALEESA-2 evaluated ribociclib in combination with letrozole, an aromatase inhibitor.
This statement is based on a regulatory approval from the European Medicines Agency:
Kisqali is indicated for the treatment of women with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative locally advanced or metastatic breast cancer in combination with an aromatase inhibitor or fulvestrant as initial endocrine-based therapy, or in women who have received prior endocrine therapy.