I'm surprised it was allowed in the first place. Studying patent law it seems that a gene would not fall under non-patentable material, as its naturally occurring. Although if you can purify a component of a natural organism, you can patent that purified product. Although the article says the SC ruled that isn't the case anymore. Anyway, never understood the rational behind patenting genes.
They can get patents for any drugs that may act on the protein, or kits to detect the presence of the gene in patients, they don't need the gene patented to make money