PTN and neoplasm: In addition to carrying the Braf gene, chromosome 6 carries several genes that are highly expressed in the LNM and tumor populations (Aqp1, Col1a2, Cav1, Cav2, Ptn, RaRes2, Fkbp9, Actg2, Ybx3, Mgp, Sox5, Kcna1, and Ptms).