In the present study, four phage clones mapped to an intergenic sequence, possibly representing a previously uncharacterized lncRNA neighbor of the CXCL13 gene (located ∼9.5 kb away from the 3’ end of CXCL13) (Figure 6B), were targeted by autoantibodies in BC sera (Table 2; Supplementary Table S2). Here, CXCL13 is linked to breast cancer.