Acceleron Pharma Inc. provided revenue guidance for the third quarter ended September 30, 2021. The company announced net sales of REBLOZYL?(luspatercept-aamt) as reported by its global collaborator, Bristol Myers Squibb, were approximately $160 million for the third quarter ended September 30, 2021. Net sales of REBLOZYL for the third quarter include approximately $20 million to $25 million of sales from an inventory build due to the transition to wholesaler distribution and approximately $13.5 million of net sales outside of the United States. Acceleron expects to report royalty revenue of approximately $32.0 million from net sales of REBLOZYL in the third quarter ended September 30, 2021. This compares with approximately $25.6 million in royalty revenue from approximately $128 million of net sales of REBLOZYL for the second quarter ended June 30, 2021.