Acute Radiation Syndrome

Cleveland BioLabs is planning a Phase I safety trial for Protectan CBLB502 for use In Acute Radiation Syndrome.

Detailed information on this clinical trial will be forthcoming at http://clinicaltrials.gov as soon as it is available.

Acute Radiation Syndrome (ARS) occurs after individuals are exposed to high levels of ionizing radiation such as might be expected following detonation of a nuclear weapon or a “dirty bomb” or an accident near a nuclear power plant. The three biological systems most affected by high levels of radiation are (1) the vascular system in the brain; (2) the mucosal cells lining the gastrointestinal (GI) track and (2) the hematopoietic (HP)/immune system. Damage to the brain’s vasculature, which occurs only at the very highest levels of radiation exposure, is irreversible and lethal. GI damage, including lesions within the gut followed by sepsis, is induced by high levels of radiation. This is usually fatal within several weeks. Damage to the HP system occurs at modestly high levels of exposure and leads to failure of the immune system in fighting infections. This can be lethal within 3-6 weeks. CBLI’s compound, Protectan CBLB502, is being investigated as a radiation countermeasure for protection against and mitigation of the GI- and HP-related symptoms of ARS.

Clinical trials
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