Solasia Pharma K.K. announced the positive results from the pivotal Phase 2 study with SP-02 (a new anti-cancer drug, international generic name: darinaparsin, hereinafter “darinaparsin”) for relapsed or refractory peripheral T-cell lymphoma (hereinafter “PTCL”) in Asia. The primary endpoint (antitumor effect) was achieved. No new safety concerns were identified in the safety analysis; This study was conducted as the final registration trial for the indication of relapsed or refractory PTCL; and Solasia begins preparing for the NDA Filing. Darinaparsin is a novel mitochondrial targeting drug (organic arsenic compound) that has been developed for the treatment of various hematological cancers and solid cancers. This study was conducted as a multinational, multicentre, single-arm, open-label, non-randomized study to evaluate the efficacy and safety of darinaparsin monotherapy in relapsed or refractory patients with PTCL in Japan, South Korea, Taiwan and Hong Kong.