Cytokinetics Inc. scored U.S. FDA marketing clearance Dec. 19 for Myqorzo (aficamten) 5-mg, 10-mg, 15-mg, and 20-mg tablets to improve functional capacity and symptoms in adults with symptomatic obstructive hypertrophic cardiomyopathy (oHCM). Shares of the South San Francisco-based firm rose 4.6%, or $2.88, on Dec. 22 to close at $65.60.