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  1. Article ; Online: Real-World Evaluation of Disease Progression After CDK 4/6 Inhibitor Therapy in Patients With Hormone Receptor-Positive Metastatic Breast Cancer.

    West, Malinda T / Goodyear, Shaun M / Hobbs, Evthokia A / Kaempf, Andy / Kartika, Thomas / Ribkoff, Jessica / Chun, Brie / Mitri, Zahi I

    The oncologist

    2022  Volume 28, Issue 8, Page(s) 682–690

    Abstract: Background: Cyclin-dependent kinase 4/6 inhibitors (CDKi) have changed the landscape for treatment of patients with hormone receptor positive, human epidermal growth factor receptor 2-negative (HR+/HER-) metastatic breast cancer (MBC). However, next- ... ...

    Abstract Background: Cyclin-dependent kinase 4/6 inhibitors (CDKi) have changed the landscape for treatment of patients with hormone receptor positive, human epidermal growth factor receptor 2-negative (HR+/HER-) metastatic breast cancer (MBC). However, next-line treatment strategies after CDKi progression are not yet optimized. We report here the impact of clinical and genomic factors on post-CDKi outcomes in a single institution cohort of HR+/HER2- patients with MBC.
    Methods: We retrospectively reviewed the medical records of patients with HR+/HER2- MBC that received a CDKi between April 1, 2014 and December 1, 2019 at our institution. Data were summarized using descriptive statistics, the Kaplan-Meier method, and regression models.
    Results: We identified 140 patients with HR+/HER2- MBC that received a CDKi. Eighty percent of patients discontinued treatment due to disease progression, with a median progression-free survival (PFS) of 6.0 months (95% CI, 5.0-7.1), whereas those that discontinued CDKi for other reasons had a PFS of 11.3 months (95% CI, 4.6-19.4) (hazard ratio (HR) 2.53, 95% CI, 1.50-4.26 [P = .001]). The 6-month cumulative incidence of post-CDKi progression or death was 51% for the 112 patients who progressed on CDKi. Patients harboring PTEN mutations pre-CDKi treatment had poorer clinical outcomes compared to those with wild-type PTEN.
    Conclusion: This study highlights post-CDKi outcomes and the need for further molecular characterization and novel therapies to improve treatments for patients with HR+/HER2- MBC.
    MeSH term(s) Humans ; Female ; Breast Neoplasms/drug therapy ; Breast Neoplasms/genetics ; Breast Neoplasms/pathology ; Receptor, ErbB-2/metabolism ; Retrospective Studies ; Antineoplastic Combined Chemotherapy Protocols/therapeutic use ; Protein Kinase Inhibitors/therapeutic use ; Disease Progression
    Chemical Substances Receptor, ErbB-2 (EC 2.7.10.1) ; Protein Kinase Inhibitors
    Language English
    Publishing date 2022-12-21
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 1409038-7
    ISSN 1549-490X ; 1083-7159
    ISSN (online) 1549-490X
    ISSN 1083-7159
    DOI 10.1093/oncolo/oyad035
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: The many roles of tranexamic acid: An overview of the clinical indications for TXA in medical and surgical patients.

    Cai, Johnny / Ribkoff, Jessica / Olson, Sven / Raghunathan, Vikram / Al-Samkari, Hanny / DeLoughery, Thomas G / Shatzel, Joseph J

    European journal of haematology

    2019  Volume 104, Issue 2, Page(s) 79–87

    Abstract: Clinically significant bleeding can occur as a consequence of surgery, trauma, obstetric complications, anticoagulation, and a wide variety of disorders of hemostasis. As the causes of bleeding are diverse and not always immediately apparent, the ... ...

    Abstract Clinically significant bleeding can occur as a consequence of surgery, trauma, obstetric complications, anticoagulation, and a wide variety of disorders of hemostasis. As the causes of bleeding are diverse and not always immediately apparent, the availability of a safe, effective, and non-specific hemostatic agent is vital in a wide range of clinical settings, with antifibrinolytic agents often utilized for this purpose. Tranexamic acid (TXA) is one of the most commonly used and widely researched antifibrinolytic agents; its role in postpartum hemorrhage, menorrhagia, trauma-associated hemorrhage, and surgical bleeding has been well defined. However, the utility of TXA goes beyond these common indications, with accumulating data suggesting its ability to reduce bleeding and improve clinical outcomes in the face of many different hemostatic challenges, without a clear increase in thrombotic risk. Herein, we review the literature and provide practical suggestions for clinical use of TXA across a broad spectrum of bleeding disorders.
    MeSH term(s) Antifibrinolytic Agents/therapeutic use ; Blood Loss, Surgical/prevention & control ; Female ; Humans ; Male ; Menorrhagia/drug therapy ; Postpartum Hemorrhage/drug therapy ; Tranexamic Acid/therapeutic use ; Wounds and Injuries/drug therapy
    Chemical Substances Antifibrinolytic Agents ; Tranexamic Acid (6T84R30KC1)
    Language English
    Publishing date 2019-12-16
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 392482-8
    ISSN 1600-0609 ; 0902-4441
    ISSN (online) 1600-0609
    ISSN 0902-4441
    DOI 10.1111/ejh.13348
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: CDK 4/6 inhibitors are associated with a high incidence of thrombotic events in women with breast cancer in real-world practice.

    West, Malinda T / Smith, Claire E / Kaempf, Andy / Kohs, Tia C L / Amirsoltani, Ramin / Ribkoff, Jessica / Choung, Josh Lee / Palumbo, Alison / Mitri, Zahi / Shatzel, Joseph J

    European journal of haematology

    2021  Volume 106, Issue 5, Page(s) 634–642

    Abstract: Purpose: Cyclin-dependent kinase (CDK) 4/6 inhibitors are integral treatment for advanced hormone receptor positive breast cancer; however, venous thromboembolic events (VTE) occurred in 1%-5% of clinical trial patients. Thrombosis rates in the real- ... ...

    Abstract Purpose: Cyclin-dependent kinase (CDK) 4/6 inhibitors are integral treatment for advanced hormone receptor positive breast cancer; however, venous thromboembolic events (VTE) occurred in 1%-5% of clinical trial patients. Thrombosis rates in the real-world setting remain unclear. We aimed to define the rate of thromboembolic events, risk factors for thrombosis on CDK 4/6 inhibitors and evaluate the Khorana VTE risk score as a predictive tool for VTE in patients on CDK 4/6 therapy.
    Methods: Multicenter retrospective analysis of adult breast cancer patients prescribed palbociclib, ribociclib, or abemaciclib. The primary endpoint was thrombosis during treatment or within 30 days of CDK inhibitor discontinuation. Cox regression was used to model time-to-thrombosis, starting from a patient's initiation of CDK 4/6 therapy. The extended Kaplan-Meier method and Cox modeling were used to assess the effect of time-varying thrombosis status on overall survival.
    Results: Two hundred and sixty-six patients were included (89% on palbociclib, 14% on abemaciclib, 7% on ribociclib). Twenty-nine thrombotic events occurred in 26 (9.8%) women. Of these events, 72% were venous and 34% were arterial. The 1-year incidence of thrombosis was 10.4% overall, 10.9% on palbociclib, 8.3% on ribociclib, and 4.8% on abemaciclib. Hemoglobin less than 10 g/dL was a statistically significant predictor of thrombosis (HR 3.53, P: .014). Khorana score ranged from 0-3, with the majority between 0 and 1 and was not predictive of VTE. Thrombosis was associated with reduced overall survival (HR 1.28, P: .128, median 7.3 months) compared to not having a CDK-associated clot (median 35.7 months).
    Discussion: VTE in our analysis is higher than reported in clinical trials and arterial thrombosis comprised over one-third of events. The highest incidence was with palbociclib, followed by ribociclib. Khorana score did not predict VTE risk. Larger, real-world studies are needed. The role for prophylactic anticoagulation is yet to be defined in this patient population.
    MeSH term(s) Antineoplastic Combined Chemotherapy Protocols/adverse effects ; Antineoplastic Combined Chemotherapy Protocols/therapeutic use ; Breast Neoplasms/complications ; Breast Neoplasms/drug therapy ; Breast Neoplasms/epidemiology ; Cyclin-Dependent Kinase 4/antagonists & inhibitors ; Cyclin-Dependent Kinase 6/antagonists & inhibitors ; Duration of Therapy ; Female ; Humans ; Incidence ; Molecular Targeted Therapy/adverse effects ; Molecular Targeted Therapy/methods ; Outcome Assessment, Health Care ; Prognosis ; Protein Kinase Inhibitors/adverse effects ; Protein Kinase Inhibitors/therapeutic use ; Retrospective Studies ; Risk Adjustment ; Risk Factors ; Sex Factors ; Thrombosis/epidemiology ; Thrombosis/etiology ; Venous Thrombosis/epidemiology ; Venous Thrombosis/etiology
    Chemical Substances Protein Kinase Inhibitors ; CDK4 protein, human (EC 2.7.11.22) ; CDK6 protein, human (EC 2.7.11.22) ; Cyclin-Dependent Kinase 4 (EC 2.7.11.22) ; Cyclin-Dependent Kinase 6 (EC 2.7.11.22)
    Language English
    Publishing date 2021-02-18
    Publishing country England
    Document type Journal Article ; Multicenter Study
    ZDB-ID 392482-8
    ISSN 1600-0609 ; 0902-4441
    ISSN (online) 1600-0609
    ISSN 0902-4441
    DOI 10.1111/ejh.13590
    Database MEDical Literature Analysis and Retrieval System OnLINE

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