“…Some of them were retrospective analyses or case series only. Among the drugs tried or on trial are Etanercept, Imatinib, Prednisone (Daniil et al, 1999;Douglas et al, 1997;Douglas, Ryu, & Schroeder, 2000;Douglas et al, 1998;Nicholson AG, 2000;Riha et al, 2002;Ziesche, Hofbauer, Wittmann, Petkov, & Block, 1999), N-Acetylcysteine (Demedts et al, 2005), TGF-β antibody (Genzyme, 2007), Interferon-γ (Antoniou et al, 2006;Raghu et al, 2004;Raghu R, 2001), Interferon-β (Raghu, Bozic, & Brown, 2001), Pirfenidone (Azuma, Nukiwa et al, 2005;S. Nagai et al, 2002;Raghu, Johnson, Lockhart, & Mageto, 1999), Colchicine (Douglas, Ryu, & Schroeder, 2000;Douglas et al, 1998;Selman et al, 1998), Bosentan, Cyclosporin-A (Alton, Johnson, & Turner-Warwick, 1989;Moolman, Bardin, Rossouw, & Joubert, 1991), D-Penicillamin (Chapela, Zuniga, & Selman, 1986;Selman et al, 1998), Heparin (Kubo et al, 2005), Relaxin (ATS, 2002), Angiotensin converting enzyme (ACE) inhibitors (Nadrous, Ryu, Douglas, Decker, & Olson, 2004), and CTGF antibodies (Mageto Y, 2004).…”