@article{eprints3075, author = {Bernardino Ghetti and Salvatore Spina and Jill R. Murrell and Edward D Huey and Pietro Pietrini and B. Sweeney and Eric M. Wassermann and C. Keohane and M.R. Farlow and Jordan Grafman}, publisher = {Karger}, note = {Free access from publisher's website}, journal = {Neurodegenerative Diseases}, number = {3-4}, pages = {215--217}, volume = {5}, year = {2008}, title = {In vivo and Postmortem Clinicoanatomical Correlations in Frontotemporal Dementia and Parkinsonism Linked to Chromosome 17}, abstract = {Background: Frontotemporal dementia and parkinsonism linked to chromosome 17 (FTDP-17) is associated with mutations in the Microtubule-Associated Protein Tau(MAPT) gene or the Progranulin(PGRN) gene. MAPT mutations lead to widespread deposition of hyperphosphorylated tau protein (FTDP-17T). PGRN mutations are associated with ubiquitin- and TDP-43-positive inclusions in the frontotemporal cortex, striatum and hippocampus (FTDP-17U). Despite the differences, FTDP-17T and FTDP-17U share a largely overlapping clinical phenotype. Objective: To determine whether neuroimaging studies may allow an in vivo early differentiation between FTDP-17T and FTDP-17U. Methods: We studied 25 individuals affected with FTDP-17T associated with either the exon 10+3 (24 subjects) or the G335S (1 subject) MAPT mutation, as well as 3 FTDP-17U individuals, who were carriers of the A9D, IVS6-2A{\ensuremath{>}}G or R493X PGRN mutation. Neuroimaging studies, obtained along the course of the disease, were compared to the neuropathologic findings. Results: FTDP-17T cases were associated with symmetric frontotemporal atrophy. Behavioral changes constituted the predominant clinical presentation. Conversely, an asymmetric degenerative process was seen in all 3 PGRN cases, who presented with either corticobasal syndrome (A9D) or frontotemporal dementia and language deterioration (IVS6-2A{\ensuremath{>}}G and R493X). Conclusion: Neuroimaging data, in the early disease stage of FTDP-17, may offer the possibility of an early differentiation of FTDP-17T and FTDP-17U phenotypes, independent of the genetic analysis.}, url = {http://eprints.imtlucca.it/3075/} }