Based on the location of CHROMR in the Human genome with respect to the protein-coding gene, in GENECODE 7 annotation (Derrien et al., 2012) it is categorized as biotype “non-coding natural antisense transcript”, as the 3′ end of CHROMR overlaps with the 3′ end of its paired sense gene PRKRA. However, there is no published evidence of CHROMR antisense regulation of its paired coding gene PRKRA in gliomas yet. This evidence concerns the gene PRKRA and central nervous system cancer.