2021
DOI: 10.1016/s2665-9913(21)00320-9
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Safety and tolerability of mRNA COVID-19 vaccines in people with antiphospholipid antibodies

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Cited by 13 publications
(11 citation statements)
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“…Indeed, we found that, globally, IgM or IgG levels are increased upon infection with SARS-CoV-2, with 66% of individuals having aPL against ≥1 antigen (non-infected controls: 15%), 40% against ≥2 antigens (non-infected controls: 0%), and 21.3% against ≥3 antigens (non-infected controls: 0%), using a threshold of OD ≥ 50. Thus, the prevalence of aPL was higher in our study than previously reported [ 13 , 15 , 50 , 51 , 55 ], despite not including LA in the measurements, and in spite of omitting IgA aPL. Importantly, we detected significant distributional changes between non-infected controls and SARS-CoV-2-infected individuals for IgM aPL against AnV, β2, and PT using Fisher’s exact test (p-values < 0.01), and for β2, and PT using Wilcoxon rank sum test (p-values < 0.01 after Benjamini-Hochberg correction).…”
Section: Discussioncontrasting
confidence: 75%
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“…Indeed, we found that, globally, IgM or IgG levels are increased upon infection with SARS-CoV-2, with 66% of individuals having aPL against ≥1 antigen (non-infected controls: 15%), 40% against ≥2 antigens (non-infected controls: 0%), and 21.3% against ≥3 antigens (non-infected controls: 0%), using a threshold of OD ≥ 50. Thus, the prevalence of aPL was higher in our study than previously reported [ 13 , 15 , 50 , 51 , 55 ], despite not including LA in the measurements, and in spite of omitting IgA aPL. Importantly, we detected significant distributional changes between non-infected controls and SARS-CoV-2-infected individuals for IgM aPL against AnV, β2, and PT using Fisher’s exact test (p-values < 0.01), and for β2, and PT using Wilcoxon rank sum test (p-values < 0.01 after Benjamini-Hochberg correction).…”
Section: Discussioncontrasting
confidence: 75%
“…Some studies found no direct relationship of aPL-positivity with thrombotic events [ 8 , 45 49 ], which could be due to different epitope specificity, i.e. different aPL subtypes [ 50 , 51 ] compared to APS. Conversely, other studies found an association of elevated aPL (e.g.…”
Section: Discussionmentioning
confidence: 99%
“…The identification of belimumab, as the most implicated therapy, is in line with this hypothesis as more than 50% of patients were receiving this therapy in addition to conventional treatments, probably identifying a subgroup of patients with a more aggressive disease (in Italy, due to eligibility criteria, belimumab can be prescribed only in patients with an active disease despite the conventional immunosuppressive therapy). The lack of any association with the serological profile is reassuring: our data confirmed that positive anti-phospholipid antibodies do not represent a major concern for the risk of thrombosis in patients undergoing anti-SARS-CoV-2 vaccination [ 19 ].…”
Section: Discussionsupporting
confidence: 53%
“…A recent study reported anti-PF4 antibodies in aPL-positive patients were not affected by COVID-19 vaccination [ 17 ]. Two surveys in patients with aPL antibodies reported that COVID-19 vaccination did not result in severe adverse events [ 18 , 19 ]. A study reported that COVID-19 vaccine did not affect aCL and anti-β2GP1 IgG and IgM titres in primary APS patients [ 20 ].…”
Section: Discussionmentioning
confidence: 99%