WIT1, or WT1 antisense RNA, is a human gene encoded by WT1-AS. It may also be known as: Putative Wilms tumor upstream neighbor 1 gene protein; WIT-1; Wilms tumor-associated antisense RNA; Wilms tumor associated protein; WT1-AS1; WT1AS. The encoded protein has an amino acid length of 92 and a mass of 10.0 kDa. Homologs of this gene exist in other organisms, including: Arabidopsis.