title: Comment on: First report of FIP1L1-PDGFRα-positive eosinophilic granulomatosis with polyangiitis.
authors.affiliation: Department of Internal Medicine, National Referral Center for Rare Autoimmune and Systemic Diseases (Vasculitis, Scleroderma), Hôpital Cochin, APHP, Université Paris Descartes, Paris and matthieu.groh@cch.aphp.fr.
authors.forename: Matthieu
authors.initials: M
authors.lastname: Groh
authors.affiliation: Department of Internal Medicine, Hôpital Foch, Université Paris-Île-de-France-Ouest, Suresnes, France.
authors.forename: Jean-Emmanuel
authors.initials: JE
authors.lastname: Kahn
authors.affiliation: Department of Internal Medicine, National Referral Center for Rare Autoimmune and Systemic Diseases (Vasculitis, Scleroderma), Hôpital Cochin, APHP, Université Paris Descartes, Paris and.
authors.forename: Xavier
authors.initials: X
authors.lastname: Puéchal
authors.affiliation: Department of Internal Medicine, National Referral Center for Rare Autoimmune and Systemic Diseases (Vasculitis, Scleroderma), Hôpital Cochin, APHP, Université Paris Descartes, Paris and.
authors.forename: Loïc
authors.initials: L
authors.lastname: Guillevin
mesh_terms: D015267:Churg-Strauss Syndrome / Q000235:genetics*; D005260:Female; D050939:Gene Fusion / Q000235:genetics*; D014890:Granulomatosis with Polyangiitis / Q000235:genetics*; D006801:Humans; D020796:Receptor, Platelet-Derived Growth Factor alpha / Q000235:genetics*; D039221:mRNA Cleavage and Polyadenylation Factors / Q000235:genetics*
chemical_list: D039221:mRNA Cleavage and Polyadenylation Factors; D020796:Receptor, Platelet-Derived Growth Factor alpha