What a laugh. That must be what it taking so long though since announcement. They're sifting through the hordes of merger orders trying to narrow it down. The only way anyone would merge is if they are in dire need of a tax loss on the balance sheet.
If true I wouldn't bet the house on it. Pfizer has enough cash to be speculative and it not matter. There are plenty Pfizer has been in on that flopped at trials..check out CLDN for an example.