ACVR2B/Fc administration to tumour hosts (A + T) was able to maintain body weight over the course of the experiment (Figure1A and 1B), yielding a 14% increase (P < 0.0001) in carcass weight compared with T, while not having an effect on either wet or dry food consumption (FigureS2). This evidence concerns the gene ACVR2B and neoplasm.