aTyr Pharma Inc is a biotherapeutics company engaged in the discovery and development of first-in-class medicines from its proprietary tRNA synthetase platform. The company has concentrated its research and development efforts on a newly discovered area of biology, the extracellular functionality and signaling pathways of tRNA synthetases. Its primary focus is efzofitimod, a clinical-stage product candidate which targets NRP2 to resolve chronic inflammation that can cause to fibrosis. Efzofitimod has a novel mechanism of action for potentially treating lung inflammation and fibrosis.