The most credible 3-UTR candidate variants were found in TBCK (rs79409042, chromosome 4) in the phenotype Necrosis of pulp or apical periodontitis, in HNRNPK (rs696825, chromosome 9) in Pulpal and apical diseases, and in MTMR3 (rs9983, chromosome 22) in Pulpitis. The gene discussed is MTMR3; the disease is periapical periodontitis.