Potential coronavirus treatment granted rare disease status

FILE - In this July 9, 2015, file photo, a man walks outside the headquarters of Gilead Sciences in Foster City, Calif. Gilead, the pharmaceutical giant that makes remdesivir, a promising coronavirus drug, has registered it as a rare disease treatment with U.S. regulators on Monday, March 23, 2020, a status that can potentially be worth millions in tax breaks and competition-free sales. (AP Photo/Eric Risberg, File)

WASHINGTON — The pharmaceutical giant that makes a promising coronavirus drug has registered it as a rare disease treatment with U.S. regulators, a status that can potentially be worth millions in tax breaks and competition-free sales.