Severe eosinophilic asthma in Chinese C‐BIOPRED asthma cohort.

Thus, using SEC, a very high proportion of patients with severe asthma of up to 76.8% would have severe eosinophilic asthma, which is higher than in other severe asthma cohorts7-9 of Caucasian populations. Keywords: blood eosinophil count; cigarette smoking; exacerbations; fractional exhaled nitric oxide; severe asthma EN blood eosinophil count cigarette smoking exacerbations fractional exhaled nitric oxide severe asthma 1 7 7 03/03/22 20220201 NES 220201 Dear Editor, In China, asthma affects 45.7 million adults with a prevalence of 4.2%,1 while that of severe asthma ranges from 3.4% to 8.3% among asthmatic patients.2-4 There is scarce information on the characteristics and biomarker expression, and the different phenotypes of severe asthma. Therefore, severe asthma patients have more symptoms, more exacerbations, more airflow obstruction, and more nasal polyps even if they are on high-dose asthma medication regimens, including oral corticosteroids. [Extracted from the article]