From: Alzheimer’s disease drug-development pipeline: few candidates, frequent failures
Year registered | Phase 1 | Phase 2 | Phase 3 | Total |
---|---|---|---|---|
2002 | 0 | 2 | 3 | 5 |
2003 | 0 | 5 | 7 | 12 |
2004 | 1 | 9 | 4 | 14 |
2005 | 4 | 19 | 9 | 32 |
2006 | 5 | 14 | 6 | 25 |
2007 | 16 | 22 | 8 | 46 |
2008 | 25 | 27 | 9 | 61 |
2009 | 28 | 30 | 14 | 72 |
2010 | 16 | 24 | 11 | 51 |
2011 | 15 | 26 | 4 | 45 |
2012 | 14 | 28 | 8 | 50 |
Total | 124 | 206 | 83 | 413 |