Following two clinical trial disappointments, the newest being the phase III failure of ampreloxetine, Theravance Biopharma Inc. will restructure by laying off three-quarters of its staff and will stop developing all but two of its non-respiratory disease programs. The ampreloxetine study for treating symptomatic neurogenic orthostatic hypotension failed to meet its primary endpoint, the company announced Sept. 15. In late August, data from a phase IIb dose-finding study showed izencitinib, a gut-selective pan-JAK inhibitor for treating ulcerative colitis, failed to meet its primary endpoint.