ABSTRACT

Direct oral anticoagulants (DOACs) have largely replaced vitamin K antagonists, mostly warfarin, for the main indications for oral anticoagulation, prevention and treatment of venous thromboembolism, and prevention of embolic stroke in atrial fibrillation. While DOACs offer practical, fixed-dose anticoagulation in many patients, specific restrictions or contraindications may apply. DOACs are not sufficiently effective in high-thrombotic risk conditions such as antiphospholipid syndrome and mechanical heart valves. Patients with cancer-associated thrombosis may benefit from DOACs, but the bleeding risk, particularly in those with gastrointestinal or urogenital tumors, must be carefully weighed. In patients with frailty, excess body weight, and/or moderate-to-severe chronic kidney disease, DOACs must be cautiously administered and may require laboratory monitoring. Reversal agents have been developed and approved for life-threatening bleeding. In addition, the clinical testing of potentially safer anticoagulants such as factor XI(a) inhibitors is important to further optimize anticoagulant therapy in an increasingly elderly and frail population worldwide. Expected final online publication date for the Annual Review of Pharmacology and Toxicology, Volume 64 is January 2024. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

PMID:37758192 | DOI:10.1146/annurev-pharmtox-032823-122811

11:09

PubMed articles on: Cancer & VTE/PE

The Risk of Thromboembolism in Patients with Muscle Invasive Bladder Cancer before and after Cystectomy Depending on Blood Group and Neoadjuvant Chemotherapy-A Multicentre Retrospective Cohort Study

J Pers Med. 2023 Sep 4;13(9):1355. doi: 10.3390/jpm13091355.

ABSTRACT

PURPOSE: Previous studies have indicated that patients with muscle-invasive bladder cancer with non-O blood types have an increased risk of experiencing thromboembolic events (TEEs). This is finding is in relation to neoadjuvant-chemotherapy (NAC)-naïve patients.

AIM: to establish the risk of TEEs and any association with blood types among NAC patients as well as NAC-naïve patients.

METHODS: Cystectomized patients at four centres treated from 2009 to 2018 (n = 244) were analysed. The quantities of patients corresponding to each blood group were as follows: A-108 (44%); O-99 (41%); B-30 (12%); and AB-7 (3%). NAC patients (n = 167) and NAC-naïve NAC-eligible patients (n = 77) were assessed. In total, 54 women (22%) and 190 men (78%), with a median age of 69 years, were included in the study. The occurrence of any type of TEE from six months pre-cystectomy to 12-24 months after was analysed using logistic regression adjusted for NAC and confounders.

RESULTS: Sixty-six TEEs were detected in 21% of the patients (n = 52). Pulmonary embolus (n = 33) and deep venous thrombosis (n = 11) were the most common forms. No significant differences between blood types were found in the analysis, although B blood type had a nearly significant increased crude risk compared with O blood type, for which there was an OR of 2.48 (95% CI 0.98-6.36). Adjustment for NAC and covariates weakened the OR, which plummeted to 1.98 (95% CI 0.71-5.51).

CONCLUSIONS: No significant associations were found between blood types and TEE occurrences in this cohort including both NAC and NAC-naïve NAC-eligible patients.

PMID:37763123 | PMC:PMC10533159 | DOI:10.3390/jpm13091355

11:09

PubMed articles on: Cancer & VTE/PE

A New Risk Prediction Model for Venous Thromboembolism and Death in Ambulatory Lung Cancer Patients

Cancers (Basel). 2023 Sep 15;15(18):4588. doi: 10.3390/cancers15184588.

ABSTRACT

(1) Background: Venous thromboembolism (VTE) is a frequent complication in ambulatory lung cancer patients during chemotherapy and is associated with increased mortality. (2) Methods: We analyzed 568 newly diagnosed metastatic lung cancer patients prospectively enrolled in the HYPERCAN study. Blood samples collected before chemotherapy were tested for thrombin generation (TG) and a panel of hemostatic biomarkers. The Khorana risk score (KRS), new-Vienna CATS, PROTECHT, and CONKO risk assessment models (RAMs) were applied. (3) Results: Within 6 months, the cumulative incidences of VTE and mortality were 12% and 29%, respectively. Patients with VTE showed significantly increased levels of D-dimer, FVIII, prothrombin fragment 1 + 2, and TG. D-dimer and ECOG performance status were identified as independent risk factors for VTE and mortality by multivariable analysis and utilized to generate a risk score that provided a cumulative incidence of VTE of 6% vs. 25%, death of 19% vs. 55%, and in the low- vs. high-risk group, respectively (p < 0.001). While all published RAMs significantly stratified patients for risk of death, only the CATS and CONKO were able to stratify patients for VTE. (4) Conclusions: A new prediction model was generated to stratify lung cancer patients for VTE and mortality risk, where other published RAMs failed.

PMID:37760562 | PMC:PMC10527104 | DOI:10.3390/cancers15184588

11:09

PubMed articles on: Cancer & VTE/PE

Management of Patients Treated with Direct Oral Anticoagulants in Clinical Practice and Challenging Scenarios

J Clin Med. 2023 Sep 13;12(18):5955. doi: 10.3390/jcm12185955.

ABSTRACT

It is well established that direct oral anticoagulants (DOACs) are the cornerstone of anticoagulant strategy in atrial fibrillation (AF) and venous thromboembolism (VTE) and should be preferred over vitamin K antagonists (VKAs) since they are superior or non-inferior to VKAs in reducing thromboembolic risk and are associated with a lower risk of intracranial hemorrhage (IH). In addition, many factors, such as fewer pharmacokinetic interactions and less need for monitoring, contribute to the favor of this therapeutic strategy. Although DOACs represent a more suitable option, several issues should be considered in clinical practice, including drug-drug interactions (DDIs), switching to other antithrombotic therapies, preprocedural and postprocedural periods, and the use in patients with chronic renal and liver failure and in those with cancer. Furthermore, adherence to DOACs appears to remain suboptimal. This narrative review aims to provide a practical guide for DOAC prescription and address challenging scenarios.

PMID:37762897 | PMC:PMC10531873 | DOI:10.3390/jcm12185955

11:09

PubMed articles on: Cancer & VTE/PE

An Updated Systematic Review and Meta-Analysis of the Impact of Graduated Compression Stockings in Addition to Pharmacological Thromboprophylaxis for Prevention of Venous Thromboembolism in Surgical Inpatients

Ann Surg. 2023 Sep 27. doi: 10.1097/SLA.0000000000006096. Online ahead of print.

ABSTRACT

OBJECTIVE: This systematic review and meta-analysis compares the rate of venous thromboembolism (VTE) in surgical inpatients with pharmacological thromboprophylaxis and additional graduated compression stockings (GCS) versus pharmacological thromboprophylaxis alone.

SUMMARY BACKGROUND DATA: Surgical inpatients have elevated VTE risk; recent studies cast doubt whether GCS confer additional protection against VTE, compared to pharmacological thromboprophylaxis alone.

METHODS: The review followed PRISMA guidelines using a registered protocol (CRD42017062655). The MEDLINE and Embase databases were searched to November 2022. Randomised trials reporting VTE rate after surgical procedures, utilising pharmacological thromboprophylaxis, with or without GCS, were included. The rates of deep venous thrombosis (DVT), pulmonary embolism (PE), VTE-related mortality were pooled via fixed and random effects.

RESULTS: In head-to-head meta-analysis, the risk of DVT for GCS and pharmacological thromboprophylaxis was 0.85 (95% CI 0.54-1.36) versus for pharmacological thromboprophylaxis alone (2 studies, 70 events, 2653 participants). The risk of DVT in pooled trial arms for GCS and pharmacological thromboprophylaxis was 0.54 (95% CI 0.23-1.25) versus pharmacological thromboprophylaxis alone (33 trial arms, 1228 events, 14,108 participants). The risk of PE for GCS and pharmacological prophylaxis versus pharmacological prophylaxis alone was 0.71 (95% CI 0.0-30.0) (27 trial arms, 32 events, 11,472 participants). There were no between-group differences in VTE-related mortality (27 trial arms, 3 events, 12,982 participants).

CONCLUSIONS: Evidence from head-to-head meta-analysis and pooled trial arms demonstrates no additional benefit for GCS in preventing VTE and VTE-related mortality. GCS confer a risk of skin complications and an economic burden; current evidence does not support their use for surgical inpatients.

PMID:37753655 | DOI:10.1097/SLA.0000000000006096

11:09

PubMed articles on: Cancer & VTE/PE

Anti-Inflammatory and Anticancer Effects of Anticoagulant Therapy in Patients with Malignancy

Life (Basel). 2023 Sep 10;13(9):1888. doi: 10.3390/life13091888.