|We are a clinical-stage biopharmaceutical company using our proprietary synthetic vaccine particle, or SVP, technology to discover and develop targeted therapies that are designed to modulate the immune system to effectively and safely treat rare and serious diseases. Many such diseases are treated with biologic therapies that are foreign to the patient's immune system and, therefore, elicit an undesired immune response. Of particular concern are anti-drug antibodies, or ADAs, which are produced by the immune system in response to biologic therapy and can adversely affect the efficacy and safety of treatment. Our proprietary SVP technology encapsulates an immunomodulator in biodegradable nanoparticles to induce antigen-specific immune tolerance to mitigate the formation of ADAs in response to life-sustaining biologic drugs. We believe our SVP technology has the potential for broad applications to both enhance existing biologic drugs and enable novel therapies. Our lead product candidate, SEL-212, is a combination of a therapeutic enzyme and our SVP technology designed to be the first biologic treatment for gout that durably controls uric acid in refractory gout and dissolves and removes harmful deposits of uric acid crystals in chronic tophaceous gout, each a painful and debilitating disease with unmet medical need. SEL-212 is currently in a comprehensive Phase 1/2 clinical program. The Phase 1/2 clinical program is comprised of two Phase 1 clinical trials and a Phase 2 clinical trial, and is designed to evaluate the ability of SEL-212 to control uric acid levels and mitigate the formation of ADAs. Based on preliminary data from our ongoing Phase 1b clinical trial, we believe that SEL-212 has the potential to control serum uric acid levels for at least 30 days after a single dose by mitigating the formation of ADAs in response to the therapeutic enzyme. We expect to receive final data from both Phase 1 clinical trials and initiate the Phase 2 clinical trial in the second half of 2016.