The clinical outcomes of the two patients after transplantation showed that both patients had fair glycemic control during transplantation and later clinical follow-up based on discontinuation of all hypoglycemic agents and discontinuation of insulin, respectively, which indicates the effectiveness of FMT on glycemic control in T1DM and that this effectiveness can be maintained, which is consistent with the study by Mokhtari et al. This evidence concerns the gene INS and type 1 diabetes mellitus.