PT - JOURNAL ARTICLE AU - Marek Lommatzsch AU - Maria Klein AU - Paul Stoll AU - Johann Christian Virchow TI - Impact of an increase in the inhaled corticosteroid dose on blood eosinophils in asthma AID - 10.1136/thoraxjnl-2018-212233 DP - 2019 Apr 01 TA - Thorax PG - 417--418 VI - 74 IP - 4 4099 - http://thorax.bmj.com/content/74/4/417.short 4100 - http://thorax.bmj.com/content/74/4/417.full SO - Thorax2019 Apr 01; 74 AB - Here, we report that increasing treatment with inhaled corticosteroids (ICS) in patients with not well-controlled asthma from a medium to a high dose results in a profound reduction of blood eosinophils (median fall in blood eosinophil concentrations from 560 to 320 cells/µL). Therefore, ‘normal values’ of blood eosinophils in patients with asthma need to be considered in view of the individual ICS doses of the patients. In addition, increases in the dose of ICS may result in blood eosinophil concentrations which would formally preclude treatment with biologics targeting the interleukin-5 pathway.