Could Zytiga Top $ Billion Dollar Sales in 2012 ?

Zytiga is set for "Blockbuster" status if it can make more than a $ billion dollar sales in its first full year of trading. Zytiga was only approved for sales by the FDA in April 2011 and first quarter sales reached $ 55 million worldwide. 2012 is the first full year of trading for Zytiga, and by the first quarter of 2012 sales had reached $ 200 M, and the second quarter reached $ 232 M, making a whopping total of $ 432 M for the first half of 2012. Projected sales are $ 275 M for the next quarter and $ 325 M for the final quarter making a projected total sales of Zytiga for 2012 at $ 1,032 M just reaching the billion dollar mark. If these projections are borne out, and some say they are conservative estimates and actual sales may be much higher than this, then Zytiga can be classified as a blockbuster drug.