Furthermore, in a scRNA-seq study of mammary specific polyomavirus middle T antigen overexpression mouse model (MMTV-PyMT) breast tumors by Bartoschek and colleagues (44), NID2 was identified as a marker of vascular CAFs, which may be linked to the expression of NID2 at vascular BMs (74). The gene discussed is NID2; the disease is breast neoplasm.