XLRN - Acceleron Pharma inc (XLRN) Q2 2021 Earnings Call Transcript August, 05 2021 11:31 PM Acceleron Pharma Inc. Image source: The Motley Fool. Acceleron Pharma inc (NASDAQ: XLRN) Q2 2021 Earnings Call Aug 5, 2021 , 5:00 p.m. ET Operator Continue reading For further details see: Acceleron Pharma inc (XLRN) Q2 2021 Earnings Call Transcript