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Antibody-mediated Immune Responses to Infectious Agents / Cardiovascular Diseases / Antibodies, Viral · Journal article
Human Vaccines & Immunotherapeutics · June 12, 2026
Early or partial results. Treat as a signal, not a conclusion.
This two-sample Mendelian randomization study provides genetic evidence for causal associations between pathogen-specific antibodies (HHV-7 U14, EBV EBNA-1, EBV EA-D, H. pylori IgG) and three cardiovascular inflammatory diseases (myocarditis, coronary atherosclerosis, giant cell arteritis). The authors acknowledge that findings under the strict threshold represent more robust evidence, while lenient threshold results are hypothesis-generating and require validation in more rigorous designs and non-European populations.
Two-sample Mendelian randomization study with bidirectional analysis. UK Biobank genetic data on antibody-mediated immune responses to infectious agents; FinnGen genetic data on myocarditis, pericarditis, endocarditis, coronary atherosclerosis, polyarteritis nodosa, and giant cell arteritis; European ancestry populations.. Intervention: Genetic variants (instrumental variables) associated with 46 pathogen-specific antibodies including human herpes virus 7 U14, Epstein-Barr virus EBNA-1, Epstein-Barr virus EA-D, and anti-Helicobacter pylori IgG. Compared with: Six cardiovascular inflammatory disease outcomes: myocarditis, pericarditis, endocarditis, coronary atherosclerosis, polyarteritis nodosa, and giant cell arteritis. UK Biobank and FinnGen (Finland); European ancestry populations.
HHV-7 U14 antibody levels associated with myocarditis (OR = 2.049, 95% CI: 1.325–3.168, p = .001, FDR = 0.044) under strict threshold EBV EBNA-1 antibody levels associated with coronary atherosclerosis (OR = 0.909, 95% CI: 0.866–0.954, p = 1.00E-04, FDR = 0.001) under strict threshold EBV EA-D antibody levels associated with giant cell arteritis (OR = 0.410, 95% CI: 0.247–0.680, p = .001, FDR = 0.007) under strict threshold
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These findings suggest potential causal links between specific pathogen antibodies and cardiovascular inflammation, which could inform future investigation of infection-inflammation-cardiovascular disease mechanisms. However, clinicians should note that these are genetic associations requiring validation; the authors explicitly state that findings under strict threshold are preliminary and lenient threshold findings are hypothesis-generating, not ready for clinical implementation.
Mendelian randomization study identifying genetic associations between pathogen antibodies and cardiovascular inflammatory diseases; findings under strict threshold represent hypothesis-generating evidence requiring validation in rigorous designs and diverse populations.
As stated by the source record.
Quoted from the source exactly as published.
These findings suggest potential causal links between specific pathogen antibodies and cardiovascular inflammation, which could inform future investigation of infection-inflammation-cardiovascular disease mechanisms. However, clinicians should note that these are genetic associations requiring validation; the authors explicitly state that findings under strict threshold are preliminary and lenient threshold findings are hypothesis-generating, not ready for clinical implementation.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
A two-sample Mendelian randomization study was performed to evaluate causal associations between 46 pathogen-specific antibodies and six cardiovascular inflammatory diseases: myocarditis, pericarditis, endocarditis, coronary atherosclerosis (CAS), polyarteritis nodosa (PAN), and giant cell arteritis (GCA). Antibody data came from UK Biobank, diseases data came from FinnGen. Instrumental variables were selected using strict (p < 5 × 10-8) and lenient threshold (p < 5 × 10-6). Benjamini-Hochberg method was used to control FDR; FDR‑adjusted q < 0.05 defined "robust associations." Under strict threshold, robust associations were observed for HHV-7 U14 antibody levels with myocarditis (OR = 2.049, 95% CI: 1.325-3.168, p =.001, FDR = 0.044), EBV EBNA-1 antibody levels with CAS (OR = 0.909, 95% CI: 0.866-0.954, p = 1.00E-04, FDR = 0.001), and EBV EA-D antibody levels with GCA (OR = 0.410, 95% CI: 0.247-0.680, p =.001, FDR = 0.007). Under lenient threshold, EBV EBNA-1 antibody levels (OR = 0.924, 95% CI: 0.889-0.960, p = 5.03E-05, FDR = 0.012) and anti-Helicobacter pylori IgG seropositivity (OR = 1.050, 95% CI: 1.021-1.080, p =.001, FDR = 0.047) were robustly associated with CAS. No significant horizontal pleiotropy or heterogeneity was detected, and reverse MR did not support reverse causation. This study provides genetic evidence for causal associations between pathogen‑specific antibodies with myocarditis, CAS and GCA. Associations identified under strict threshold represent more robust evidence, whereas those under lenient threshold are hypothesis-generating. Validation in more rigorous designs and non-European populations is warranted.
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