5/20/21 for Opdivo monotherapy in adjuvant esophageal or gastroesophageal junction cancer (following chemo/radiation in the neoadjuvant setting), based on CHECKMATE-577 study: https://www.businesswire.com/news/home/20210120005097/en
The approval is based on the CHECKMATE-649 study, in which Opdivo/chemo showed a statsig OS benefit vs chemo alone in both the overall trial (HR=0.80; n=789) and in the PD-L1>=5% subgroup (HR=0.71; n=482). Opdivo/chemo also showed a statsig PFS benefit relative to chemo in the PD-L1 subgroup (HR=0.68).
Data from a separate CHECKMATE-648 arm testing Opdivo/Yervoy vs chemo have not been reported (AFAIK), so I presume that this arm did not show a statsig benefit in either OS or PFS.