STAG3 and neoplasm: Of note, we found that the STING agonist alone was able to significantly slow MPNST growth in our cisNP mice (percentage increase in tumor volume for control vs. ADU-S100 treatment, P = 0.0123; Figure 4, D and E); percentage increase in tumor volume for control vs. SA3 treatment, P = 0.0384; Supplemental Figure 2F).