Annexon Biosciences Inc.’s handsome $250 million IPO this summer verified the mounting interest in its two front-running C1q inhibitors: ANX-005, which has turned up promising phase Ib data in Guillain-Barre syndrome (GBS), with a phase II/III effort planned for next year, and ANX-007, due to enter a phase II experiment in geographic atrophy (GA) during 2021 as well.