XLRN - Acceleron Pharma Inc (XLRN) Q4 2020 Earnings Call Transcript February, 26 2021 12:31 PM Acceleron Pharma Inc. Image source: The Motley Fool. Acceleron Pharma Inc (NASDAQ: XLRN) Q4 2020 Earnings Call Feb 25, 2021 , 5:00 p.m. ET Operator Continue reading For further details see: Acceleron Pharma Inc (XLRN) Q4 2020 Earnings Call Transcript