PMID- 37759823 OWN - NLM STAT- MEDLINE DCOM- 20230929 LR - 20231003 IS - 2218-273X (Electronic) IS - 2218-273X (Linking) VI - 13 IP - 9 DP - 2023 Sep 20 TI - An Overview of the Safety Profile and Clinical Impact of CDK4/6 Inhibitors in Breast Cancer-A Systematic Review of Randomized Phase II and III Clinical Trials. LID - 10.3390/biom13091422 [doi] LID - 1422 AB - Cyclin-dependent kinase 4 and 6 inhibitors (CDK4/6is) have transformed the treatment of hormone receptor-positive (HR+) and human epidermal growth factor receptor 2-negative (HER2-) breast cancer over the last decade. These inhibitors are currently established as first- and second-line systemic treatment choices for both endocrine-sensitive and -resistant breast cancer populations alongside endocrine therapy (ET) or monotherapy. Data on targeted therapy continue to mature, and the number of publications has been constantly rising. Although these drugs have been demonstrated to prolong overall survival (as well as progression-free survival (PFS) in breast cancer patients), changing the paradigm of all current knowledge, they also cause important adverse events (AEs). This review provides the latest summary and update on the safety profile of the three CDK4/6 inhibitors, as it appears from all major phase II and III randomized clinical trials regarding palbociclib, ribociclib, and abemaciclib, including the most relevant 15 clinical trials. FAU - Stanciu, Ioana-Miruna AU - Stanciu IM AUID- ORCID: 0009-0003-5937-0778 AD - Department of Oncology, "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania. AD - Department of Medical Oncology, Elias University Emergency Hospital, 011461 Bucharest, Romania. FAU - Parosanu, Andreea Ioana AU - Parosanu AI AD - Department of Oncology, "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania. AD - Department of Medical Oncology, Elias University Emergency Hospital, 011461 Bucharest, Romania. FAU - Nitipir, Cornelia AU - Nitipir C AD - Department of Oncology, "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania. AD - Department of Medical Oncology, Elias University Emergency Hospital, 011461 Bucharest, Romania. LA - eng PT - Journal Article PT - Review PT - Systematic Review DEP - 20230920 PL - Switzerland TA - Biomolecules JT - Biomolecules JID - 101596414 RN - EC 2.7.11.22 (CDK4 protein, human) RN - EC 2.7.11.22 (Cyclin-Dependent Kinase 4) SB - IM MH - Humans MH - Female MH - *Breast Neoplasms/drug therapy MH - Progression-Free Survival MH - Cyclin-Dependent Kinase 4 MH - Clinical Trials, Phase II as Topic PMC - PMC10526227 OTO - NOTNLM OT - CDK4/6 inhibitor toxicities OT - abemaciclib OT - breast cancer OT - palbociclib OT - ribociclib OT - safety profile COIS- The authors declare no conflict of interest. EDAT- 2023/09/28 06:43 MHDA- 2023/09/29 06:44 PMCR- 2023/09/20 CRDT- 2023/09/28 01:03 PHST- 2023/08/15 00:00 [received] PHST- 2023/09/15 00:00 [revised] PHST- 2023/09/19 00:00 [accepted] PHST- 2023/09/29 06:44 [medline] PHST- 2023/09/28 06:43 [pubmed] PHST- 2023/09/28 01:03 [entrez] PHST- 2023/09/20 00:00 [pmc-release] AID - biom13091422 [pii] AID - biomolecules-13-01422 [pii] AID - 10.3390/biom13091422 [doi] PST - epublish SO - Biomolecules. 2023 Sep 20;13(9):1422. doi: 10.3390/biom13091422.