Adding Abemaciclib Offers Good Outcomes in Pre-/Perimenopausal Breast Cancer

Excerpt:

“The addition of the CDK4/6 inhibitor abemaciclib to fulvestrant significantly improved progression-free survival (PFS) and time to subsequent chemotherapy in pre- and perimenopausal women with hormone receptor–positive/HER2-negative advanced breast cancer, according to results from an analysis of the phase III MONARCH-2 trial (abstract 1002) presented at the 2018 American Society of Clinical Oncology (ASCO) Annual Meeting, held June 1–5 in Chicago.”

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Ribociclib Active Across Premenopausal Breast Cancer Subgroups

Excerpt:

“The progression-free survival (PFS) benefit for ribociclib (Kisqali) in pre- or perimenopausal women with hormone receptor–positive, HER2-negative advanced or metastatic breast cancer was sustained across patient subgroups, according to findings from the phase III MONALEESA-7 trial presented at the 2018 Miami Breast Cancer Conference.

“MONALEESA-7 randomized patients to either the CDK4/6 inhibitor ribociclib in combination with tamoxifen or a nonsteroidal aromatase inhibitor (NSAI; letrozole or anastrozole) plus goserelin (n = 335), or to endocrine treatment plus goserelin (n = 337). Across the overall study population, the median PFS was 23.8 months for the ribociclib arm compared with 13.0 months for the control arm (HR, 0.553; 95% CI, 0.441-0.694; P <.0001).”

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Earlier Indicator of Palbociclib Response Found for Patients with Breast Cancer

Excerpt:

“According to findings published in Nature Communications, a blood test detecting early changes in circulating tumor DNA (ctDNA) may provide earlier indication of whether patients with hormone receptor–positive, HER2-negative breast cancer are responding to the CDK4/6 inhibitor palbociclib (Ibrance).

“The test could detect a response within 2 to 3 seeks, said investigators with The Institute of Cancer Research, London, and The Royal Marsden NHS Foundation Trust. Women currently wait 2 to 3 months to find out if palbociclib treatment is working for them.”

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Trilaciclib Reduces Chemotherapy-Induced Myelosuppression in Small Cell Lung Cancer

Excerpt:

“Trilaciclib appeared associated with reduced chemotherapy-induced myelosuppression and was well tolerated among patients undergoing first-line therapy for extensive-stage small cell lung cancer, according to results from a double-blind, placebo-controlled phase 2 trial.

“Trilaciclib (G1 Therapeutics) is a short-acting CDK4/6 inhibitor that preserves hematopoietic stem cells and enhances immune system function — myelopreservation — during chemotherapy.”

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US Awards Novartis’ Kisqali ‘Breakthrough’ Status

Excerpt:

“Novartis’ CDK4/6 inhibitor Kisqali has picked up Breakthrough status in the US as an initial endocrine-based treatment in certain patients with breast cancer.

“The US Food and Drug Administration has awarded the designation for of pre- or perimenopausal women with hormone-receptor positive, human epidermal growth factor receptor-2 negative (HR+/HER2-) advanced or metastatic breast cancer in combination with tamoxifen or an aromatase inhibitor.”

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Updated Data from Phase 3 Trial of Ibrance® (Palbociclib) plus Letrozole in ER+, HER2- Metastatic Breast Cancer Confirm Improvement in Progression-Free Survival

Excerpt:

“Pfizer Inc. (NYSE:PFE) today announced updated progression-free survival (PFS) results from the Phase 3 PALOMA-2 trial reinforcing the clinical benefit of IBRANCE® (palbociclib) combined with letrozole. The data, which will be presented at the 2017 San Antonio Breast Cancer Symposium (SABCS) on December 8 [abstract #P5-21-03], demonstrate that the combination of IBRANCE plus letrozole reduced the risk of disease progression by 44 percent and improved median PFS by more than one year compared to letrozole plus placebo (27.6 months [95% CI: 22.4, 30.3] vs 14.5 months [95% CI: 12.3, 17.1]) when used as the initial treatment for postmenopausal women with estrogen receptor-positive, human epidermal growth factor receptor 2-negative (ER+, HER2-) metastatic breast cancer (HR=0.56 [95% CI: 0.46, 0.69]). This updated, post-hoc analysis included a median follow-up of more than three years, which is the longest to date of any Phase 3 study of a CDK 4/6 inhibitor.”

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EU, US Approvals for Faslodex Combinations

Excerpt:

“AstraZeneca’s Faslodex has been cleared on both sides of the Atlantic for use in combination with a CDK4/6 inhibitor.

“In the EU, the drug’s use has been approved for use alongside the CDK4/6 inhibitor palbociclib to treat a certain form of breast cancer, in the US it can be prescribed in combination with the CDK4/6 inhibitor abemaciclib.

“Both the European Commission and US Food and Drug Administration have approved the combination for the treatment of hormone receptor-positive (HR+), human epidermal growth factor receptor 2 negative (HER2-) locally advanced or metastatic breast cancer in women who have received prior endocrine therapy.”

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Abemaciclib Improves PFS in Phase III MONARCH 3 Breast Cancer Trial

Excerpt:

“Adding abemaciclib to letrozole or anastrozole improved progression-free survival (PFS) compared with either aromatase inhibitor alone in women with HR+/HER2-negative breast cancer enrolled in the phase III MONARCH 3 study, according to Eli Lilly and Company, the manufacturer of the CDK4/6 inhibitor.

“MONARCH 3 (NCT02246621) is the second phase III trial of abemaciclib to demonstrate improved PFS in patients with HR+/HER2-negative breast cancer. In March, Lilly announced that in the MONARCH 2 study, combining abemaciclib with fulvestrant extended PFS compared with fulvestrant alone in patients who had progressed during or within 1 year of receiving endocrine therapy in the neoadjuvant or adjuvant setting, or during frontline endocrine treatment for metastatic disease.”

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CDK4/6 Agent Active in Metastatic Breast Cancer

Excerpt:

“About one in five patients with post-chemotherapy metastatic breast cancer attained an objective response to single-agent therapy with the cyclin-dependent kinase (CDK)4/6 inhibitor abemaciclib, results of a phase II trial showed.

“Responses were durable, lasting an average of almost 9 months, and more than 40% of patients obtained clinical benefit. Abemaciclib’s safety and tolerability were consistent with previous clinical experience, as no new or unexpected adverse events occurred among 132 patients who received the drug.”

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