 CAMBRIDGE, Mass.--BUSINESS WIRE--Acceleron Pharma Inc. Nasdaq:XLRN today announced it will host a webcast and conference call on Thursday, August 5, 2021 at 5:00 p.m. EDT to discuss its second quarter 2021 financial results. The webcast will be accessible under Events Presentations in the Investors Media page of the Companys website at To participate in the conference call, please dial 833-494-1483 domestic or 236-714-2620 international and refere 