Questionable Efficacy of Therapeutic Antibodies in the Treatment of Anthrax

ABSTRACT Inhalational anthrax caused by Bacillus anthracis, a spore-forming Gram-positive bacterium, is a highly lethal infection. Antibodies targeting the protective antigen (PA) binding component of the toxins have recently been authorized as an adjunct to antibiotics, although no conclusive evide...

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Main Authors: Jean-Nicolas Tournier, Clémence Rougeaux, Fabrice V. Biot, Pierre L. Goossens
Format: Article
Language:English
Published: American Society for Microbiology 2019-06-01
Series:mSphere
Subjects:
Online Access:https://journals.asm.org/doi/10.1128/mSphere.00282-19
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author Jean-Nicolas Tournier
Clémence Rougeaux
Fabrice V. Biot
Pierre L. Goossens
author_facet Jean-Nicolas Tournier
Clémence Rougeaux
Fabrice V. Biot
Pierre L. Goossens
author_sort Jean-Nicolas Tournier
collection DOAJ
description ABSTRACT Inhalational anthrax caused by Bacillus anthracis, a spore-forming Gram-positive bacterium, is a highly lethal infection. Antibodies targeting the protective antigen (PA) binding component of the toxins have recently been authorized as an adjunct to antibiotics, although no conclusive evidence demonstrates that anthrax antitoxin therapy has any significant benefit. We discuss here the rational basis of anti-PA development regarding the pathogenesis of the disease. We argue that inductive reasoning may induce therapeutic bias. We identified anthrax animal model analysis as another bias. Further studies are needed to assess the benefit of anti-PA antibodies in the treatment of inhalational anthrax, while a clearer consensus should be established around what evidence should be proven in an anthrax model.
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spelling doaj.art-bbcf90b9c4804021a29a4fed189b8a612022-12-21T21:52:21ZengAmerican Society for MicrobiologymSphere2379-50422019-06-014310.1128/mSphere.00282-19Questionable Efficacy of Therapeutic Antibodies in the Treatment of AnthraxJean-Nicolas Tournier0Clémence Rougeaux1Fabrice V. Biot2Pierre L. Goossens3Institut de Recherche Biomédicale des Armées, Bacteriology, Anti-infectious Biotherapies, and Immunity Unit, Brétigny-sur-Orge, FranceInstitut de Recherche Biomédicale des Armées, Bacteriology, Anti-infectious Biotherapies, and Immunity Unit, Brétigny-sur-Orge, FranceInstitut de Recherche Biomédicale des Armées, Bacteriology, Anti-infectious Biotherapies, and Immunity Unit, Brétigny-sur-Orge, FranceInstitut de Recherche Biomédicale des Armées, Bacteriology, Anti-infectious Biotherapies, and Immunity Unit, Brétigny-sur-Orge, FranceABSTRACT Inhalational anthrax caused by Bacillus anthracis, a spore-forming Gram-positive bacterium, is a highly lethal infection. Antibodies targeting the protective antigen (PA) binding component of the toxins have recently been authorized as an adjunct to antibiotics, although no conclusive evidence demonstrates that anthrax antitoxin therapy has any significant benefit. We discuss here the rational basis of anti-PA development regarding the pathogenesis of the disease. We argue that inductive reasoning may induce therapeutic bias. We identified anthrax animal model analysis as another bias. Further studies are needed to assess the benefit of anti-PA antibodies in the treatment of inhalational anthrax, while a clearer consensus should be established around what evidence should be proven in an anthrax model.https://journals.asm.org/doi/10.1128/mSphere.00282-19anthraxantitoxinsmonoclonal antibodiesprotective antigentoxins
spellingShingle Jean-Nicolas Tournier
Clémence Rougeaux
Fabrice V. Biot
Pierre L. Goossens
Questionable Efficacy of Therapeutic Antibodies in the Treatment of Anthrax
mSphere
anthrax
antitoxins
monoclonal antibodies
protective antigen
toxins
title Questionable Efficacy of Therapeutic Antibodies in the Treatment of Anthrax
title_full Questionable Efficacy of Therapeutic Antibodies in the Treatment of Anthrax
title_fullStr Questionable Efficacy of Therapeutic Antibodies in the Treatment of Anthrax
title_full_unstemmed Questionable Efficacy of Therapeutic Antibodies in the Treatment of Anthrax
title_short Questionable Efficacy of Therapeutic Antibodies in the Treatment of Anthrax
title_sort questionable efficacy of therapeutic antibodies in the treatment of anthrax
topic anthrax
antitoxins
monoclonal antibodies
protective antigen
toxins
url https://journals.asm.org/doi/10.1128/mSphere.00282-19
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