Elixiron Immunotherapeutics Announces Orphan Drug Designation Granted to Interferon-Gamma-Neutralizing Antibody, EI-001 for the Treatment of Hemophagocytic Lymphohistiocytosis SAN FRANCISCO, Sept. 06, 2022 (GLOBE NEWSWIRE) -- Elixiron Immunotherapeutics, a clinical stage biotech company, announced today that the U.S. Food and Drug Administration (FDA) has granted Orphan...