Yeon Hee Park, MD, PhD, on Metastatic Breast Cancer: Updated Survival Results of the Young-PEARL Study
2024 ASCO Annual Meeting
Yeon Hee Park, MD, PhD, of South Korea’s Samsung Medical Center and Sungkyunkwan University, discusses phase II findings on palbociclib plus exemestane with a GnRH agonist vs capecitabine in premenopausal patients with hormone receptor–positive, HER2-negative metastatic breast cancer (LBA1002).
Transcript
Disclaimer: This video transcript has not been proofread or edited and may contain errors.
YoungPEARL study is a prospective randomized phase 2 study to compare palbociclib plus exemestane plus GnRH agonist versus capecitabine for premenopausal HR-positive HER2-negative metastatic breast cancers. Actually, this clinical trial was published and presented in 2019. According to that trial research, palbociclib plus exemestane plus GnRH antagonist showed a superior PFS compared to the capecitabine. Their median PFS was 20.1 months versus capecitabine, 14.4 months. This kind of real big research contributed to expansion of palbociclib plus AI label to include premenopausal population.
So now, here we reported updated overall survival research. Data cutoff is February 29th, 2024 with median follow-up duration of 54 months. So we follow up the updated PFS research to show the consistent superior PFS showed in palbociclib arm. Median PFS was 19.5 months versus 14 months of PFS shown in capecitabine arm. Hazard ratio in people was strongly enough to consider it's a big impact in terms of PFS.
And now, we show the overall survival research. There is no big difference between the two arm. Palbociclib arm showed the 54.7 months of PFS, and then capecitabine arm showed a remarkable PFS of 57.8 months. They did not show any difference, but it's 54 months of longer follow-up duration. Palbociclib arm showed a pretty consistent, longer overall survival of 54.8 months. So it's a really... Extended overall survival was shown in palbociclib arm. But palbociclib superior PFS did not lead to the overall survival benefit compare capecitabine arm. But capecitabine arm showed... Multivariate analysis showed the post-treatment CDK4/6 inhibitor was identified as a independent favorable factor for overall survival with statistical significance. So maybe post CDK inhibitor treatment contributed to extended overall survival in palbociclib arm.
The ASCO Post Staff
Amrita Y. Krishnan, MD, of the City of Hope Cancer Center, and Paula Rodríguez-Otero, MD, PhD, of Spain’s Cancer Center Clínica Universidad de Navarra, discuss data that appear to further support daratumumab plus bortezomib, lenalidomide, and dexamethasone as a new standard of care for transplant-eligible patients with newly diagnosed multiple myeloma (Abstract 7502).
The ASCO Post Staff
Xavier P. Leleu, MD, PhD, of France’s Université de Poitiers and Centre Hospitalier Universitaire de Poitiers, discusses phase III findings showing that isatuximab in combination with bortezomib, lenalidomide, and dexamethasone deepened responses and increased the rate of measurable residual disease negativity vs isatuximab with lenalidomide and dexamethasone in patients with newly diagnosed transplant-ineligible multiple myeloma (Abstract 7501).
The ASCO Post Staff
Laurence Albiges, MD, PhD, of Gustave Roussy, Université Paris-Saclay, discusses phase III findings showing that high baseline serum KIM-1 levels were associated with poorer prognosis but improved clinical outcomes with atezolizumab vs placebo in patients with renal cell carcinoma at increased risk of recurrence after resection. Increased post-treatment KIM-1 levels were found to be associated with worse disease-free survival (Abstract 4506).
Ciara C. O’Sullivan, MD, MBBCh, of Mayo Clinic, discusses three studies of treatment for patients with HER2-positive metastatic breast cancer and their clinical implications: the EMERALD trial of eribulin and taxane; the Patricia Cohort C trial of palbociclib plus trastuzumab and endocrine therapy; and DB07 on trastuzumab deruxtecan with or without palbociclib.
The ASCO Post Staff
Yukio Suzuki, MD, PhD, of Columbia University College of Physicians and Surgeons, discusses data showing that reproductive-age patients with early-stage endometrial cancer who use fertility-preserving hormonal therapy seemed to have good overall survival after a 10-year follow-up (Abstract 5508).