End of the road for IPI-504: Infinity Halts RING Trial in Advanced Gastrointestinal Stromal Tumors <a href="http://finance.yahoo.com/news/Infinity-Halts-RING-Trial-in-pz-14931131.html" rel="nofollow" target="_blank">http://finance.yahoo.com/news/Infinity-Halts-RING-Trial-in-pz-14931131.html</a>