PMID- 30032196 OWN - NLM STAT- MEDLINE DCOM- 20200311 LR - 20231006 IS - 1460-2105 (Electronic) IS - 0027-8874 (Print) IS - 0027-8874 (Linking) VI - 111 IP - 4 DP - 2019 Apr 1 TI - Long-term Pooled Safety Analysis of Palbociclib in Combination With Endocrine Therapy for HR+/HER2- Advanced Breast Cancer. PG - 419-430 LID - 10.1093/jnci/djy109 [doi] AB - BACKGROUND: Palbociclib administered with endocrine therapy was tolerable when the overall incidence of toxicities was assessed separately for three PALOMA studies. This study analyzed pooled, longer-term PALOMA safety data longitudinally. METHODS: Data were pooled from three randomized phase II and III studies (ClinicalTrials.gov: NCT00721409, NCT01740427, NCT01942135) of hormone receptor-positive/human epidermal growth factor receptor 2‒negative advanced breast cancer patients. Front-line patients were randomly assigned to receive letrozole with/without palbociclib (PALOMA-1) or letrozole plus palbociclib/placebo (PALOMA-2). In PALOMA-3, patients with prior endocrine resistance received fulvestrant plus palbociclib/placebo. The cumulative event rates of adverse events (AEs), reporting up to 50 months of treatment, were assessed over time. RESULTS: Patients who received endocrine therapy (n = 1343) were included in this pooled analysis (872 were also treated with palbociclib, and 471 were not). The most common AEs with palbociclib plus endocrine therapy were neutropenia and infections (any grade, 80.6% and 54.7%, respectively), which were higher than in the endocrine monotherapy arm (any grade, 5.3% and 36.9%). The most common hematologic AEs (>/=15.0% in the palbociclib arm) were more likely to be reported in the initial months of the study, after which time the cumulative event rate did not substantially increase. With palbociclib plus endocrine therapy, any grade AEs leading to permanent discontinuation over three years occurred in only 8.3% of patients. CONCLUSIONS: Based on these long-term safety analyses, there is no evidence of specific cumulative or delayed toxicities with palbociclib plus endocrine therapy, supporting the ongoing investigation of palbociclib plus endocrine therapy in early breast cancer (NCT02513394). CI - (c) The Author(s) 2018. Published by Oxford University Press. FAU - Dieras, Veronique AU - Dieras V AD - Institut Curie, Paris, France (VD). FAU - Rugo, Hope S AU - Rugo HS AD - University of California San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, CA (HSR). FAU - Schnell, Patrick AU - Schnell P AD - Pfizer Inc, Collegeville, PA (PS, CHB). FAU - Gelmon, Karen AU - Gelmon K AD - British Columbia Cancer Agency, Vancouver, BC, Canada (KG). FAU - Cristofanilli, Massimo AU - Cristofanilli M AD - Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Chicago, IL (MC). FAU - Loi, Sherene AU - Loi S AD - Peter MacCallum Cancer Centre, University of Melbourne, Melbourne, VIC, Australia (SL). FAU - Colleoni, Marco AU - Colleoni M AD - Istituto Europeo di Oncologia, Milan, Italy (MC). FAU - Lu, Dongrui R AU - Lu DR AD - Pfizer Inc, La Jolla, CA (DRL). FAU - Mori, Ave AU - Mori A AD - Pfizer Inc, Milano, Italy (AM). FAU - Gauthier, Eric AU - Gauthier E AD - Pfizer Inc, San Francisco, CA (EG). FAU - Huang Bartlett, Cynthia AU - Huang Bartlett C AD - Pfizer Inc, Collegeville, PA (PS, CHB). FAU - Slamon, Dennis J AU - Slamon DJ AD - David Geffen School of Medicine, Los Angeles, CA (DJS, RSF). FAU - Turner, Nicholas C AU - Turner NC AD - Institute of Cancer Research and Royal Marsden Hospital, London, UK (NCT). FAU - Finn, Richard S AU - Finn RS AD - David Geffen School of Medicine, Los Angeles, CA (DJS, RSF). LA - eng SI - ClinicalTrials.gov/NCT00721409 SI - ClinicalTrials.gov/NCT01740427 SI - ClinicalTrials.gov/NCT01942135 SI - ClinicalTrials.gov/NCT02513394 PT - Clinical Trial, Phase II PT - Clinical Trial, Phase III PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - United States TA - J Natl Cancer Inst JT - Journal of the National Cancer Institute JID - 7503089 RN - 0 (Piperazines) RN - 0 (Pyridines) RN - 0 (Receptors, Estrogen) RN - 22X328QOC4 (Fulvestrant) RN - 7LKK855W8I (Letrozole) RN - EC 2.7.10.1 (Receptor, ErbB-2) RN - G9ZF61LE7G (palbociclib) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Antineoplastic Combined Chemotherapy Protocols/*therapeutic use MH - Breast Neoplasms/*drug therapy/metabolism/pathology MH - Double-Blind Method MH - Female MH - Follow-Up Studies MH - Fulvestrant/administration & dosage MH - Humans MH - Letrozole/administration & dosage MH - Middle Aged MH - Piperazines/administration & dosage MH - Prognosis MH - Pyridines/administration & dosage MH - Receptor, ErbB-2/*metabolism MH - Receptors, Estrogen/*metabolism PMC - PMC6449170 EDAT- 2018/07/23 06:00 MHDA- 2020/03/12 06:00 PMCR- 2018/07/18 CRDT- 2018/07/23 06:00 PHST- 2017/08/23 00:00 [received] PHST- 2018/04/10 00:00 [revised] PHST- 2018/05/22 00:00 [accepted] PHST- 2018/07/23 06:00 [pubmed] PHST- 2020/03/12 06:00 [medline] PHST- 2018/07/23 06:00 [entrez] PHST- 2018/07/18 00:00 [pmc-release] AID - 5055701 [pii] AID - djy109 [pii] AID - 10.1093/jnci/djy109 [doi] PST - ppublish SO - J Natl Cancer Inst. 2019 Apr 1;111(4):419-430. doi: 10.1093/jnci/djy109.