Through the analysis of the different tissues for LOH at both the MEN1 and miR-24-1 loci, four MEN1 parathyroid tumors showed LOH for the MEN1 allele (PA96, PA83, P49, and PA22), while four parathyroid tumors (PH2, PA86, PA62, and PA30) did not show MEN1-LOH, thus preserving the MEN1 wild-type allele (Table 1). Here, MEN1 is linked to tumor of parathyroid gland.