 The World Professional Association for Transgender Health (WPATH) argued against including Blanchard's typology in the DSM, stating that there was no scientific consensus on the theory, and that there was a lack of longitudinal studies on the development of transvestic fetishism.A 2016 review found support for the predictions of Blanchard's typology that androphilic and gynephilic trans women have different brain phenotypes.It stated that although Cantor seems to be right that Blanchard's predictions have been validated by two independent structural neuroimaging studies, there is "still only one study on nonhomosexual MtFs; to fully confirm the hypothesis, more independent studies on nonhomosexual MtFs are needed.