 ROCKVILLE, Md., Sept. 21, 2021 PRNewswire -- Synthetic Biologics, Inc. NYSE American: SYN, a diversified clinical-stage company leveraging the microbiome to develop therapeutics designed to prevent and treat gastrointestinal GI diseases in areas of high unmet need, today announced that the Companys annual meeting of shareholders, on September 21, 2021, at 9:30 a.m. 