Acute Exacerbations in Idiopathic Pulmonary Fibrosis
IN RESPONSE:
Drs. Crowley, Kelly, and Egan raise several important points regarding our recent report that identified a high incidence of rapidly progressive pulmonary disease in the placebo group of a multicenter trial of interferon-γ1b in patients with IPF. The identification of patients who succumbed to a rapid, fatal deterioration versus those who did not provides important, clinically relevant information.
Examination of baseline characteristics of patients who died abruptly of IPF-related causes and those of patients who died following an IPF-related subacute deterioration revealed a similar baseline mean predicted FVC (64% [SD, 12%] vs. 60% [SD, 12%]; P = 0.29) and mean DLco (33% [SD, 6%] vs. 31% [SD, 7%]; P = …
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