1
|
Conidi ME, Bernardi L, Puccio G, Smirne N, Muraca MG, Curcio SAM, Colao R, Piscopo P, Gallo M, Anfossi M, Frangipane F, Clodomiro A, Mirabelli M, Vasso F, Cupidi C, Torchia G, Di Lorenzo R, Mandich P, Confaloni A, Maletta RG, Bruni AC. Homozygous carriers of APP A713T mutation in an autosomal dominant Alzheimer disease family. Neurology 2015; 84:2266-73. [PMID: 25948718 DOI: 10.1212/wnl.0000000000001648] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 02/23/2015] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To report, for the first time, a large autosomal dominant Alzheimer disease (AD) family in which the APP A713T mutation is present in the homozygous and heterozygous state. To date, the mutation has been reported as dominant, and in the heterozygous state associated with familial AD and cerebrovascular lesions. METHODS The family described here has been genealogically reconstructed over 6 generations dating back to the 19th century. Plasma β-amyloid peptide was measured. Sequencing of causative AD genes was performed. RESULTS Twenty-one individuals, all but 1 born from 2 consanguineous unions, were studied: 8 were described as affected through history, 5 were studied clinically and genetically, and 8 were asymptomatic at-risk subjects. The A713T mutation was detected in the homozygous state in 3 patients and in the heterozygous state in 8 subjects (6 asymptomatic and 2 affected). CONCLUSIONS Our findings, also supported by the β-amyloid plasma assay, confirm (1) the pathogenic role of the APP A713T mutation, (2) the specific phenotype (AD with cerebrovascular lesions) associated with this mutation, and (3) the large span of age at onset, not influenced by APOE, TOMM40, and TREM2 genes. No substantial differences concerning clinical phenotype were evidenced between heterozygous and homozygous patients, in line with the classic definition of dominance. Therefore, in this study, AD followed the classic definition of a dominant disease, contrary to that reported in a previously described AD family with recessive APP mutation. This confirms that genetic AD may be considered a disease with dominant and recessive traits of inheritance.
Collapse
Affiliation(s)
- Maria E Conidi
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Livia Bernardi
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Gianfranco Puccio
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Nicoletta Smirne
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Maria G Muraca
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Sabrina A M Curcio
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Rosanna Colao
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Paola Piscopo
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Maura Gallo
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Maria Anfossi
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Francesca Frangipane
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Alessandra Clodomiro
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Maria Mirabelli
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Franca Vasso
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Chiara Cupidi
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Giusi Torchia
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Raffaele Di Lorenzo
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Paola Mandich
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Annamaria Confaloni
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Raffaele G Maletta
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy
| | - Amalia C Bruni
- From the Regional Neurogenetic Centre (M.E.C., L.B., G.P., N.S., M.G.M., S.A.M.C., R.C., M.G., M.A., F.F., A. Clodomiro, M.M., F.V., C.C., G.T., R.D.L., R.G.M., A.C.B.), ASP Catanzaro, Lamezia Terme; Department of Cell Biology and Neurosciences (P.P., A. Confaloni), National Institute of Health, Rome; and DINOGMI (P.M.), Università degli studi di Genova, Italy.
| |
Collapse
|