Two clinical studies of IBD are being carried out at the val d’Hebron Hospital in Barcelona, in association with MetaHIT industrial partners. The first concerns effects of a fermented milk product on the stability of microbiota in ulcerative colitis patients, while the second compares microbiota of patients that respond or do not respond to a particular drug treatment. Both are based on the profiling methodology developed within our project. The clinical phase of the first has been completed and the stool DNA of the 49 patients is being analyzed  by the high throughput sequencing technology. Approval for the second clinical study from the ethical committee of the Hospital has been obtained.