1187 Antibody-lectin bispecifics for glyco-immune checkpoint blockade by Nicholas Riley, Thomas Valerius, Jeffrey Ravetch, Jessica Stark, Carolyn R Bertozzi, Melissa Gray, Simon Wisnovsky, Itziar Ibarlucea-Benitez, Mikaela Ribi, Marta Lustig, Wesley Errington, Bence Bruncsics, Casim Sarkar