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| Phases of Development | Preclinical | IND | Phase II | Phase III | Phase IV | Approved | Marketed |
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| Cancer | 2 | 0 | 0 | 0 | 0 | 0 | 0 | | Cardiovascular | 0 | 0 | 4 | 0 | 0 | 0 | 2 | | Genitourinary | 0 | 1 | 1 | 1 | 0 | 1 | 4 | | Inflammation | 0 | 0 | 1 | 0 | 0 | 0 | 0 | | Ophthalmic | 0 | 0 | 0 | 0 | 1 | 0 | 0 | | Pulmonary | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Renal | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
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Products Targeting Phosphodiesterase-5 (PDE-5)