Biotech Values

[mcbio]

Re: PFE/Tanezumab

Some researchers are suggesting that an experimental Pfizer drug may have liberated arthritis sufferers to such a degree that they became more physically active — and that the subsequent wear and tear on their joints led to joint replacement surgery.

Do you buy this hypothesis? Either way, wouldn't it be difficult for PFE to definitively prove the hypothesis to the ever so safety conscious FDA?