SIGA Technologies (SIGA) said Thursday its antiviral treatment TEPOXX has received regulatory approval in Japan for the treatment of smallpox, mpox, cowpox, and complications from smallpox vaccinations in patients weighing at least 13 kilograms (28.7 pounds).
The drug, also called tecovirimat and marketed as TPOXX in the US, received approval from Japan's Pharmaceuticals and Medical Devices Agency, and will be distributed in partnership with Japan Biotechno Pharma, the company said.
SIGA said it has already delivered an order of TEPOXX to help build Japan's strategic stockpile.
Shares of SIGA were up 6% in recent Thursday premarket activity.