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Key clinical point: Patients with inflammatory bowel disease (IBD) treated with infliximab vs. vedolizumab showed attenuated immunogenicity to a single dose of BNT162b2 and adenovirus-ChAdOx1 nCoV-19 SARS-CoV-2 vaccines. Reassuringly, second dose of the vaccine led to seroconversion in most patients.
Major finding: Anti-SARS-CoV-2 antibody concentrations were lower in patients treated with infliximab vs. vedolizumab following vaccination with a single dose of either BNT162b2 (fold change [FC], 0.29; P less than .0001) or ChAdOx1 nCoV-19 (FC, 0.39; P less than .0001). After second vaccine dose, 85% of infliximab- and 86% of vedolizumab-treated patients seroconverted (P = .68).
Study details: Findings are from the CLARITY IBD study that included patients with IBD without evidence of prior SARS-CoV-2 infection who were treated with infliximab (n=865) or vedolizumab (n=428).
Disclosures: The study was funded by F. Hoffmann-La Roche AG (Switzerland), Biogen GmbH (Switzerland), Celltrion Healthcare (South Korea), and others. Some of the authors reported receiving grants, personal fees, and/or financial or nonfinancial support from multiple sources.
Source: Kennedy NA et al. Gut. 2021 Apr 26. doi: 10.1136/gutjnl-2021-324789.
Key clinical point: Patients with inflammatory bowel disease (IBD) treated with infliximab vs. vedolizumab showed attenuated immunogenicity to a single dose of BNT162b2 and adenovirus-ChAdOx1 nCoV-19 SARS-CoV-2 vaccines. Reassuringly, second dose of the vaccine led to seroconversion in most patients.
Major finding: Anti-SARS-CoV-2 antibody concentrations were lower in patients treated with infliximab vs. vedolizumab following vaccination with a single dose of either BNT162b2 (fold change [FC], 0.29; P less than .0001) or ChAdOx1 nCoV-19 (FC, 0.39; P less than .0001). After second vaccine dose, 85% of infliximab- and 86% of vedolizumab-treated patients seroconverted (P = .68).
Study details: Findings are from the CLARITY IBD study that included patients with IBD without evidence of prior SARS-CoV-2 infection who were treated with infliximab (n=865) or vedolizumab (n=428).
Disclosures: The study was funded by F. Hoffmann-La Roche AG (Switzerland), Biogen GmbH (Switzerland), Celltrion Healthcare (South Korea), and others. Some of the authors reported receiving grants, personal fees, and/or financial or nonfinancial support from multiple sources.
Source: Kennedy NA et al. Gut. 2021 Apr 26. doi: 10.1136/gutjnl-2021-324789.
Key clinical point: Patients with inflammatory bowel disease (IBD) treated with infliximab vs. vedolizumab showed attenuated immunogenicity to a single dose of BNT162b2 and adenovirus-ChAdOx1 nCoV-19 SARS-CoV-2 vaccines. Reassuringly, second dose of the vaccine led to seroconversion in most patients.
Major finding: Anti-SARS-CoV-2 antibody concentrations were lower in patients treated with infliximab vs. vedolizumab following vaccination with a single dose of either BNT162b2 (fold change [FC], 0.29; P less than .0001) or ChAdOx1 nCoV-19 (FC, 0.39; P less than .0001). After second vaccine dose, 85% of infliximab- and 86% of vedolizumab-treated patients seroconverted (P = .68).
Study details: Findings are from the CLARITY IBD study that included patients with IBD without evidence of prior SARS-CoV-2 infection who were treated with infliximab (n=865) or vedolizumab (n=428).
Disclosures: The study was funded by F. Hoffmann-La Roche AG (Switzerland), Biogen GmbH (Switzerland), Celltrion Healthcare (South Korea), and others. Some of the authors reported receiving grants, personal fees, and/or financial or nonfinancial support from multiple sources.
Source: Kennedy NA et al. Gut. 2021 Apr 26. doi: 10.1136/gutjnl-2021-324789.