WT1 and astrocytic tumor: However, some discordance exists in WT1 specificity among earlier studies with a positivity range between 80.9% and 100% in astrocytic tumors (Hashiba et al., 2007; Mahzouni and Meghdadi, 2012; Bassam et al., 2014; Rauscher et al., 2014; Kusum and Ramita, 2019; Manocha and Jain, 2019).