A Phase IB/IIA Study of Ex Vivo Expanded Allogeneic Bone Marrow–Derived Mesenchymal Stem Cells for the Treatment of Rectovaginal Fistulizing Crohn’s Disease

A Phase IB/IIA randomized control trial was performed in a 3:1, single-blinded study. Patients included were adult women with an anovaginal/rectovaginal fistula in the setting of Crohn disease.