SEATTLE, July 16, 2020 (GLOBE NEWSWIRE) — Atossa Therapeutics, Inc. (Nasdaq: ATOS), a clinical-stage biopharmaceutical company seeking to discover and develop innovative medicines in areas of significant unmet medical need with a current focus on breast cancer and COVID-19, announced that it has contracted with Avance Clinical Pty Ltd to conduct a clinical study of Atossa’s proprietary drug candidate AT-301, to be administered by nasal spray. Avance is a leading Australian clinical research organization and has successfully completed multiple clinical studies of Atossa’s proprietary Endoxifen.AT-301 is Atossa’s proprietary formula intended for nasal administration in patients immediately following diagnosis of COVID-19 but who have not yet exhibited symptoms severe enough to require hospitalization. It is intended for at-home use to proactively reduce symptoms of COVID-19 and to slow the infection rate so that a person’s immune system can more effectively fight SARS-CoV-2 (coronavirus). Atossa also intends to conduct testing to determine whether AT-301 can be used as a prophylaxis to prevent or mitigate SARS-CoV-2.The study is a double-blinded, randomized, and placebo-controlled safety study of AT-301 nasal spray in 32 healthy adult subjects divided into two study groups. Part A consists of two single-dose cohorts receiving either active therapy, AT-301B, or the placebo comparator AT-301A. Part B is a multiple dose arm with cohorts receiving either AT-301A or AT-301B for 14 days. The primary objective of the study is to evaluate the safety and tolerability of single and multiple doses of AT-301 administered via nasal instillation to healthy volunteers. Secondary objectives are to assess the incidence and severity of local irritation and bronchospasm following administration of AT-301 via nasal instillation.Forward-looking statements in this press release, which Atossa undertakes no obligation to update, are subject to risks and uncertainties that may cause actual results to differ materially from the anticipated or estimated future results, including the risks and uncertainties associated with the following: whether in vitro test results will also be achieved in in vivo studies, including human clinical studies, actions by and interactions with the FDA, the outcome or timing of regulatory approvals needed by Atossa including those needed to commence human clinical studies of AT-301 and the outcome of such trials, lower than anticipated rate of patient enrollment, the safety and efficacy of Atossa’s product candidates, performance of developers and manufacturers, clinical research organizations and investigators, obstacles resulting from proprietary rights held by others such as patent rights, uncertainties affecting our ability to secure patent protection for AT-301 or AT-H201 and other risks detailed from time to time in Atossa’s filings with the Securities and Exchange Commission, including without limitation its periodic reports on Form 10-K and 10-Q, each as amended and supplemented from time to time.

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