Association Between ABO Blood Type and Risk of Pulmonary Embolism: A Systematic Review and Meta-Analysis

Previous studies have identified ABO blood type as a risk factor for venous thromboembolism. However, the association between ABO blood type and pulmonary embolism (PE) has not yet been explored. The PubMed, Cochrane Library, Embase, and Web of Science databases were searched from inception to May 2...

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Main Authors: Xujie Wang MD, Xudong Wang MD, Zihan Wang MD
Format: Article
Language:English
Published: SAGE Publishing 2025-07-01
Series:Clinical and Applied Thrombosis/Hemostasis
Online Access:https://doi.org/10.1177/10760296251364267
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author Xujie Wang MD
Xudong Wang MD
Zihan Wang MD
author_facet Xujie Wang MD
Xudong Wang MD
Zihan Wang MD
author_sort Xujie Wang MD
collection DOAJ
description Previous studies have identified ABO blood type as a risk factor for venous thromboembolism. However, the association between ABO blood type and pulmonary embolism (PE) has not yet been explored. The PubMed, Cochrane Library, Embase, and Web of Science databases were searched from inception to May 2025. Case–control/cross-sectional and cohort studies focusing on the effect of ABO blood type on PE were evaluated. Nine eligible studies were included for meta-analysis. The pooled risk of PE was 1.45 (95% confidence interval [CI] 1.23-1.72, I 2  = 89.6%) for the non-O group compared with the O group, and there was significant heterogeneity. After the exclusion of two studies that may have produced unstable results, the risk was still significant (Relative Risk [RR] 1.39, 95% CI 1.22-1.59, I 2  = 47.1%), but there was less heterogeneity and improved stability. Both the A (RR 1.29, 95% CI 1.08-1.55, I 2  = 47.1%) and AB (RR 1.41, 95% CI 1.18-1.69, I 2  = 0.0%) blood types conferred an increased risk of PE, whereas the risk for the B group was not significant ( P  = .089). With respect to origin, only studies from America ( P  < .001), but not from Europe ( P  = .064) or Asia ( P  = .102), showed increased PE risk. Regarding study type, the results were significant both in case–control/cross-sectional ( P  < .001) and cohort studies ( P  = .002). In conclusion, individuals in the non-O group were associated with an increased risk of PE compared with those in the O group both in case–control/cross-sectional and cohort studies.
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spelling doaj-art-0f43bfcfde4c470ba41401fe51acefcc2025-08-20T02:45:06ZengSAGE PublishingClinical and Applied Thrombosis/Hemostasis1938-27232025-07-013110.1177/10760296251364267Association Between ABO Blood Type and Risk of Pulmonary Embolism: A Systematic Review and Meta-AnalysisXujie Wang MD0Xudong Wang MD1Zihan Wang MD2 Minimally Invasive Interventional Therapy Center, , Qingdao, Shandong Province, China Minimally Invasive Interventional Therapy Center, , Qingdao, Shandong Province, China Department of Ultrasound, , Qingdao, Shandong Province, ChinaPrevious studies have identified ABO blood type as a risk factor for venous thromboembolism. However, the association between ABO blood type and pulmonary embolism (PE) has not yet been explored. The PubMed, Cochrane Library, Embase, and Web of Science databases were searched from inception to May 2025. Case–control/cross-sectional and cohort studies focusing on the effect of ABO blood type on PE were evaluated. Nine eligible studies were included for meta-analysis. The pooled risk of PE was 1.45 (95% confidence interval [CI] 1.23-1.72, I 2  = 89.6%) for the non-O group compared with the O group, and there was significant heterogeneity. After the exclusion of two studies that may have produced unstable results, the risk was still significant (Relative Risk [RR] 1.39, 95% CI 1.22-1.59, I 2  = 47.1%), but there was less heterogeneity and improved stability. Both the A (RR 1.29, 95% CI 1.08-1.55, I 2  = 47.1%) and AB (RR 1.41, 95% CI 1.18-1.69, I 2  = 0.0%) blood types conferred an increased risk of PE, whereas the risk for the B group was not significant ( P  = .089). With respect to origin, only studies from America ( P  < .001), but not from Europe ( P  = .064) or Asia ( P  = .102), showed increased PE risk. Regarding study type, the results were significant both in case–control/cross-sectional ( P  < .001) and cohort studies ( P  = .002). In conclusion, individuals in the non-O group were associated with an increased risk of PE compared with those in the O group both in case–control/cross-sectional and cohort studies.https://doi.org/10.1177/10760296251364267
spellingShingle Xujie Wang MD
Xudong Wang MD
Zihan Wang MD
Association Between ABO Blood Type and Risk of Pulmonary Embolism: A Systematic Review and Meta-Analysis
Clinical and Applied Thrombosis/Hemostasis
title Association Between ABO Blood Type and Risk of Pulmonary Embolism: A Systematic Review and Meta-Analysis
title_full Association Between ABO Blood Type and Risk of Pulmonary Embolism: A Systematic Review and Meta-Analysis
title_fullStr Association Between ABO Blood Type and Risk of Pulmonary Embolism: A Systematic Review and Meta-Analysis
title_full_unstemmed Association Between ABO Blood Type and Risk of Pulmonary Embolism: A Systematic Review and Meta-Analysis
title_short Association Between ABO Blood Type and Risk of Pulmonary Embolism: A Systematic Review and Meta-Analysis
title_sort association between abo blood type and risk of pulmonary embolism a systematic review and meta analysis
url https://doi.org/10.1177/10760296251364267
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