He could add to his legacy by buying DNDN and promoting Provenge as a major step forward in the treatment for multiple forms of cancer. He has the resources and perhaps the interest to make a major impact to the healthcare system.
"First off, it is Warren Buffett , not Buffet. Secondly, he is notorious for purchasing profitable or potentially profitable companies. DNDN is neither.r"
Based on your statement it is possible that Warren could buy out DNDN. Better cover your short.
Buffett does have PC... in a recent interview with Becky Quick, I heard him refer to "recovering" from his condition... & the word "chemo". I ASSume that he can differentiate "chemo" & "immuno"-therapies. & therefore did not take Provenge.
Just the same, his public appearance "gap" was 5-6 weeks... which is more than enough time to take a Provenge series if he wanted (in addition to chemo). That would be for him to say... no one else knows for sure...