CD101 and central nervous system cancer: Higher transcript levels in the NP were also found for CD101 encoding the transmembrane glycoprotein V7, a prognostic marker for gliomas (Rivas et al., 1995; Liu et al., 2022a), and CD109 encoding a protein that negatively regulates TGFβ signaling and is involved in tumorigenesis (Li et al., 2016; Lee et al., 2020).