“The first-ever direct comparison of three adjuvant aromatase inhibitors for the treatment of postmenopausal hormone receptor–positive early breast cancer shows no significant differences in clinical efficacy or safety, according to an Italian research team.
“In the randomized, open-label phase 3 FATA-GIM3 trial of almost 3700 women, the 5-year disease-free survival for patients treated with anastrozole (Arimidex, Novartis), exemestane (Aromasin, Pfizer), or letrozole (Femara, Novartis) was 90.0%, 88.0% and 89.4%, respectively.”
“The FDA has approved co-packaging of the oral medications ribociclib (Kisqali) and letrozole (Femara) for the treatment of postmenopausal women with HR-positive, HER2-negative advanced breast cancer.
“With the new Kisqali Femara Co-Pack, patients can obtain a full 28-day cycle of the 2 medicines in 1 package with 1 prescription and 1 copay, and the cost will be the same as that for Kisqali alone, according to Novartis, which manufactures both medications.”
“The addition of a targeted agent to endocrine therapy for metastatic breast cancer led to unprecedented improvement in progression-free survival (PFS) that will have a ‘paradigm changing’ effect on clinical management, an investigator said here.
“Patients who received the cyclin-dependent kinase (CDK)4/6 inhibitor ribociclib in addition to letrozole (Femara) had a 44% reduction in the PFS hazard compared with patients treated with letrozole alone. The median PFS (primary endpoint) was 14.7 months with letrozole but had yet to be reached with letrozole plus ribociclib, ‘but it is expected to far exceed what the control arm did,’ Gabriel N. Hortobagyi, MD, reported at the European Society for Medical Oncology (ESMO) conference.”
“Adding bevacizumab (Avastin) to letrozole (Femara) improved progression-free survival (PFS) in estrogen receptor-positive metastatic breast cancer (ER+MBC) but not other outcomes, an open-label, multicenter phase III trial showed.
“While median PFS increased by 4.6 months in patients who received combined therapy versus letrozole alone, there was no significant difference in overall survival (hazard ratio 0.87; 95% CI 0.65-1.18; P=0.188), Maura N. Dickler, MD, of Memorial Sloan Kettering Cancer Center in New York City, and colleagues reported online in the Journal of Clinical Oncology.
“In addition, there was a marked increase in grade 3 to 4 toxicities, particularly hypertension (24% versus 2%) and proteinuria (11% versus 0%), the researchers said, emphasizing that the role of bevacizumab in this setting will need to be clarified with research on predictive markers.”
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Earlier this year, a new treatment option was added to the arsenal for ER-positive breast cancer in postmenopausal women when the U.S. Food and Drug Administration (FDA) approved the combination of letrozole (Femara) and palbociclib (Ibrance). Continue reading…