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. 2022 Jan 11;6(1):307-320.
doi: 10.1182/bloodadvances.2021005590.

The incidence of cancer-associated thrombosis is increasing over time

Anjlee Mahajan  1 , Ann Brunson  1 , Oyebimpe Adesina  1 , Theresa H M Keegan  1 , Ted Wun  1   2
Affiliations

The incidence of cancer-associated thrombosis is increasing over time

Anjlee Mahajan et al. Blood Adv. .

Abstract

Cancer-associated thrombosis (CAT) is an important cause of morbidity and mortality for patients with malignancy and varies by primary cancer type, stage, and therapy. We aimed to characterize the incidence, risk factors, temporal trends, and the effect on mortality of CAT. The California Cancer Registry was linked to the statewide hospitalization database to identify individuals with the 13 most common malignancies diagnosed between 2005 and 2017 and determine the 6- and 12-month cumulative incidence of CAT by venous thromboembolism (VTE) location, tumor type, and stage after adjusting for competing risk of death. Cox proportional hazard regression models were used to determine risk factors associated with CAT and the effect of CAT on all-cause mortality. 942 019 patients with cancer were identified; 62 003 (6.6%) had an incident diagnosis of CAT. Patients with pancreatic, brain, ovarian, and lung cancer had the highest, and patients with breast and prostate cancer had the lowest 12-month cumulative incidence of CAT. For most malignancies, men, those with metastatic disease and more comorbidities, and African Americans (vs non-Hispanic Whites) were at highest risk for CAT. Patients diagnosed with cancer between 2014 and 2017 had a higher risk of CAT compared with those diagnosed between 2005 and 2007. CAT was associated with increased overall mortality for all malignancies (HR ranges 1.89 to 4.79). The incidence of CAT increased over time and was driven by an increase in pulmonary embolism±deep vein thrombosis (PE±DVT). CAT incidence varies based on tumor type and stage and on individual risk factors including gender, race/ethnicity, and comorbidities. For all tumor types, CAT is associated with an increased mortality.

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Figures

None
Graphical abstract
Figure 1.
Figure 1.
Cumulative incidence of CAT among California cancer patients with select cancer site by stage, 2005-2017. (A) Limited (stage I and II). (B) Stage IV.
Figure 2.
Figure 2.
Cumulative incidence of CAT among California cancer patients with select cancer site, 2005-2017. (A) Pancreatic cancer. (B) Lung cancer. (C) Breast cancer.
Figure 3.
Figure 3.
Effect of CAT on mortality among California cancer patients with 13 common cancers, 2005-2017.
See this image and copyright information in PMC

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