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ABO Blood Groups, Lipids, and Coronary CT Imaging in A Japanese Single-Center Cohort
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ABO Blood Groups, Lipids, and Coronary CT Imaging in A Japanese Single-Center Cohort
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Journal Article
ABO Blood Groups, Lipids, and Coronary CT Imaging in A Japanese Single-Center Cohort
2026
Overview
Background and Objectives: Non-O ABO blood groups have been linked to higher coronary risk, plausibly via hemostatic and lipid pathways. However, evidence in Japanese populations and imaging-defined disease is limited. We examined whether ABO status relates to serum lipids and coronary CT imaging findings in Japanese adults. Materials and Methods: We reviewed adults who underwent coronary CT angiography (CCTA) at our institution. After prespecified exclusions, 865 patients comprised the imaging cohort. For lipid analyses, we excluded patients receiving lipid-lowering therapy at the time of blood sampling, leaving 636 patients (lipid subset). ABO blood group was obtained from the medical record as recorded at registration (patient-reported) and was not re-confirmed by laboratory testing for this study. Outcomes were any coronary artery calcium (Agatston score > 0) and ≥50% luminal stenosis on CCTA. Results: In the lipid subset (n = 636), coronary calcium was present in 44–54% of patients across the four ABO groups and did not differ across groups (p = 0.33). Among assessable scans in the imaging cohort, ≥50% stenosis did not differ across the four ABO groups. In multivariable models (n = 636), older age, male sex, hypertension, and diabetes were independently associated with both outcomes (CAC presence and ≥50% stenosis) (all p < 0.05). For ≥50% stenosis, higher High-Density Lipoprotein-cholesterol (HDL-C) was additionally associated with lower odds (p < 0.05). ABO status (O vs. non-O) was not independently associated with either outcome. Conclusions: In Japanese adults undergoing CCTA, type O blood was tied to lower HDL-C and higher diastolic pressure—features that track with cardiometabolic risk—yet ABO type did not independently relate to coronary calcium or CT-defined stenosis once standard risk factors were considered. These data suggest that, in this setting, ABO adds little beyond conventional risk profiling.
Publisher
MDPI AG,Multidisciplinary Digital Publishing Institute (MDPI)
Subject
/ ABO Blood-Group System - blood
/ Adult
/ Aged
/ Blood
/ Computed Tomography Angiography - methods
/ Coronary Angiography - methods
/ Coronary Artery Disease - blood
/ Coronary Artery Disease - diagnostic imaging
/ Coronary Vessels - diagnostic imaging
/ Female
/ Glucose
/ Heart
/ Humans
/ Japan
/ Lipids
/ Male
/ Patients
