Richeldi, Luca (2013) Clinical trials of investigational agents for IPF: a review of a Cochrane report. Respiratory Research, 14, supplement 1, S4. (doi:10.1186/1465-9921-14-S1-S4). (PMID:23734867)
Abstract
The magnitude of treatment effect can be assessed by a number of methods. One reliable method of collectively analysing data from randomised clinical trials is that used in Cochrane reviews. These systematic reviews identify and analyse the available evidence using the reliable method of meta-analysis. These often combine data from studies to provide robust evaluations of overall treatment effects. In 2003, a review of data from studies of corticosteroid use in IPF patients found no evidence of a treatment effect. Similarly, very little evidence was found to support the use of immunomodulatory agents. A recent update of these Cochrane reviews failed to identify any new evidence supporting the use of corticosteroids in IPF. However, a review of non-steroid agents for the treatment of IPF identified data from 15 RCTs that was suitable for analysis. Two trials of interferon gamma-1b were pooled and analysed, but no treatment effect was observed in terms of survival. Meta-analysis of three Phase III studies of pirfenidone treatment in IPF patients suggested that progression-free survival was significantly increased by 30%, demonstrating a reduction in the decline of lung function in IPF patients. In addition, there are numerous ongoing trials investigating potential therapeutic agents which provides hope for IPF patients and their doctors.
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