Abandon ACOS as a specific phenotype

Asthma-COPD overlap syndrome should be abandoned as a specific phenotype, say Peter Gibson and Vanessa McDonald. Writing in a review published in Thorax the  authors note that there are several phenotypes that might fall under the asthma-COPD overlap (ACOS) banner but appear to have very different features. These included severe asthma with incomplete airflow reversibility, childhood asthma and adult ...