Over the next two weeks, the team at NGM Biopharmaceuticals Inc. will be digging through the data from its phase II trial of complement 3 inhibitor NGM-621 in patients with geographic atrophy (GA) secondary to age-related macular degeneration, following reports of a top-line miss Oct. 17 and a severe reaction from investors, who sent shares (NASDAQ:NGM) plummeting 70.5% to close at $3.41.