The case has been appealed, but on a quick internet search, I couldn't find any information about the appeal's status.
As I wrote last year,
The implications of the case, and of intellectual property law regarding nature (as opposed to culture), are huge. The case is certain to be appealed. Since the Supreme Court ruled, 5-4, in 1980, that it is possible to patent a new living organism (for example, a genetically engineered bacterium), the defendants in the cancer-gene case have some degree of precedent on their side. On the other hand, there's arguably a difference between patenting manufactured living things and patenting the already existing natural world around and within us, such as our genes.
If anyone can find any new information or interesting perspectives on this case, leave a comment.