In humans, the NIBAN1 protein (ENSP00000356481.3, Figure 1) has 928 amino acids, and its location seems to be in some cellular compartments, such as cytoplasmic (Adachi et al., 2004; Cerutti et al., 2006; Matsumoto et al., 2006; Ito et al., 2010; Zhang N. et al., 2019), membranous (Uhlén et al., 2005; Uhlén et al., 2015; Uhlen et al., 2017), associated with both ER and plasma membrane, at least in prostate cancer (Pällmann et al., 2019), and nucleus (Adachi et al., 2004; Uhlen et al., 2017). This evidence concerns the gene NIBAN1 and Familial prostate cancer.