This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1111/ALL.14577 This article is protected by copyright. All rights reserved MR. MATIJA RIJAVEC (Orcid ID : 0000-0002-2596-4952) PROF. MITJA KOSNIK (Orcid ID : 0000-0002-4701-7374) DR. ANA KOREN (Orcid ID : 0000-0002-9671-1645) MRS. MOJCA BIZJAK (Orcid ID : 0000-0003-2595-468X) DR. PETER PK KOROSEC (Orcid ID : 0000-0002-0835-1599) Article type : Letter to the Editor A very low number of circulating basophils is predictive of a poor response to omalizumab in chronic spontaneous urticaria Matija Rijavec, PhD 1,2 (*), Mitja Košnik, MD, PhD 1,3 , Ana Koren, PhD 1 , Peter Kopač, MD 1,3 , Julij Šelb, MD, PhD 1 , Romana Vantur, MSc 1 , Žan Kogovšek, MSc 1 , Mojca Bizjak, MD 1 , Nissera Bajrović, MD 1 , Mihaela Zidarn, MD, PhD 1,3 , Peter Korošec, PhD 1 1 University Clinic of Respiratory and Allergic Diseases Golnik, Golnik, Slovenia 2 Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia 3 Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia (*) Corresponding author: Assist. Prof. Matija Rijavec, PhD University Clinic of Respiratory and Allergic Diseases Golnik Golnik 36, 4204 Golnik, Slovenia Tel. + 38642569430 Fax + 38642569117 E-mail matija.rijavec@klinika-golnik.si Accepted Article