2seventy bio's GAAP loss for 9M 2021 was $231.237 mln, up 5.4 times from $43.313 mln in the previous year. 2021 was $231.237 million, up 5.4 times from $43.313 million in the previous year. Revenue declined 6.1 times to $38.488 million from $238.217 million a year earlier.