With only days left before Inovio Pharmaceuticals Inc. planned to initiate a phase II/III trial of its COVID-19 DNA vaccine candidate, INO-4800, and its accompanying delivery device, the FDA placed a partial clinical hold on the company’s study. This is the study’s second delay as the company originally planned to begin in July or August. November is now the earliest potential start date. Inovio told BioWorld that the company and its partners are continuing to prepare for the phase II/III trial “following resolution of the FDA’s partial clinical hold.”