June 11, 2012 — Mevion Medical Systems, Inc., a radiation therapy company dedicated to advancing the treatment of cancer, announced that it has received FDA 510(k) clearance for its Mevion S250 Proton Therapy System. The Mevion S250 is a first-of-its-kind proton therapy system that provides the same precise, non-invasive treatment advantages and capabilities of complex, large, and costly proton therapy systems but with higher patient throughput, a significantly reduced footprint, improved reliability, and lower implementation and operational costs. The Mevion S250 delivers precise and intense proton beams that physicians can use to treat tumors and lesions or any other condition where radiotherapy is indicated.