Complex sentence: Phase III studies for Multiple Sclerosis started in December 2007 but in 2011 Teva announced that its clinical trials involving laquinimod had failed, being unable to significantly reduce relapses into multiple sclerosis among patients beyond what a placebo was.
Split into simpler sentences: Phase III studies for Multiple Sclerosis started in December 2007. In 2011 Teva announced that its clinical trials involving laquinimod had failed, being unable to significantly reduce relapses into multiple sclerosis among patients beyond what a placebo was.