biostudies-literatureUnknown14(4)Murdocca MMandibular hypoplasia, Deafness and Progeroid features with concomitant Lipodystrophy is a rare, genetic, premature aging disease named MDPL Syndrome, due to almost always a <i>de novo</i> variant in <i>POLD1</i> gene, encoding the DNA polymerase δ. In previous <i>in vitro</i> studies, we have already described several hallmarks of aging, including genetic damage, telomere shortening, cell senescence and proliferation defects. Since a clear connection has been reported between telomere shortening and mitochondria malfunction to initiate the aging process, we explored the role that mitochondrial metabolism and activity play in pathogenesis of MDPL Syndrome, an aspect that has not been addressed yet. We thus evaluated mtDNA copy number, assessing a significant decrease in mutated cells. The Aging1651-1664https://www.ebi.ac.uk/biostudies/studies/S-EPMC8908938biostudies-literatureMitochondrial dysfunction in mandibular hypoplasia, deafness and progeroid features with concomitant lipodystrophy (MDPL) patients.PMC8908938Moreno SColasuonno FMurdocca MNovelli GSpitalieri PCappello ASangiuolo FCandi ED'Apice MRfalseMitochondrial dysfunction in mandibular hypoplasia, deafness and progeroid features with concomitant lipodystrophy (MDPL) patients.Mandibular hypoplasia, Deafness and Progeroid features with concomitant Lipodystrophy is a rare, genetic, premature aging disease named MDPL Syndrome, due to almost always a <i>de novo</i> variant in <i>POLD1</i> gene, encoding the DNA polymerase δ. In previous <i>in vitro</i> studies, we have already described several hallmarks of aging, including genetic damage, telomere shortening, cell senescence and proliferation defects. Since a clear connection has been reported between telomere shortening and mitochondria malfunction to initiate the aging process, we explored the role that mitochondrial metabolism and activity play in pathogenesis of MDPL Syndrome, an aspect that has not been addressed yet. We thus evaluated mtDNA copy number, assessing a significant decrease in mutated cells. The 2022-01-01T00:00:00Z2022 Feb2025-05-18T12:32:25.846Z2025-05-18T12:32:25.846ZS-EPMC89089383519625710.18632/aging.203910