Watch for a technical breakout as market anticipates the P1 HCM data Mavacamten is I think the drug currently approved for HCM ( heart contractibility problems ) . The problem is it lowers ejection fraction ( the pump out movement ) to low for about 20% of the patients so it has a REMS rating limiting its use. EWTX EDG-5506 works the same way but without the ejection fraction problem