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Dominguez J, Ng A, Yu J, Guevarra AC, Daroy ML, Alfon A, Catindig JA, Dizon M, Santiago J, Del Moral MC, Yu J, Jamerlan A, Ligsay A, Bagyinszky E, An SS, Kim S. Autosomal Dominant Frontotemporal Lobar Degeneration in a Filipino Family with Progranulin Mutation. Dement Geriatr Cogn Disord 2021; 49:557-564. [PMID: 33486486 DOI: 10.1159/000510106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 07/10/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Compared to Western populations, familial frontotemporal lobar degeneration (FTLD) is rare among Asians. Progranulin (GRN) gene mutation, which is a major cause of FTLD, is likewise rare. We present a family with FTLD from the Philippines with an autosomal dominant pattern of inheritance and GRN mutation and briefly review reports of GRN mutations in Asia. CASE PRESENTATION The proband is 66 years old with progressive nonfluent aphasia (PNFA)-corticobasal syndrome . We assessed 3 generations of her pedigree and found 11 affected relatives with heterogenous phenotypes, usually behavioral variant frontotemporal dementia (FTD) and PNFA. Neuroimaging showed atrophy and hypometabolism consistent with FTD syndromes. White matter hyperintensities were seen in affected members even in the absence of vascular risk factors. A GRN mutation R110X was found in 6 members, 3 with symptoms and 3 were asymptomatic. Plasma GRN was low (<112 ng/mL) in all mutation carriers. No mutations were found in microtubule-associated protein tau, APP, PSEN1, and PSEN2 genes, and all were APOE3. CONCLUSION This is the first Filipino family with autosomal dominant FTD documented with GRN mutation. Identifying families and cohorts would contribute to therapeutic developments in an area with FTD-GRN.
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Affiliation(s)
- Jacqueline Dominguez
- Institute for Neurosciences, St. Luke's Medical Center, Quezon City, Philippines,
| | - Arlene Ng
- Institute for Neurosciences, St. Luke's Medical Center, Quezon City, Philippines
| | - Jeryl Yu
- Institute for Neurosciences, St. Luke's Medical Center, Quezon City, Philippines
| | - Anne Cristine Guevarra
- Research and Biotechnology Division, St. Luke's Medical Center, Quezon City, Philippines
| | - Maria Luisa Daroy
- Research and Biotechnology Division, St. Luke's Medical Center, Quezon City, Philippines
| | - Alicia Alfon
- Research and Biotechnology Division, St. Luke's Medical Center, Quezon City, Philippines
| | - Joseree-Ann Catindig
- Memory Center-Institute for Neurosciences, St. Luke's Medical Center, Taguig City, Philippines
| | - Mercedes Dizon
- Institute of Radiology, St. Luke's Medical Center, Quezon City, Philippines
| | - Jonas Santiago
- PET Center, St. Luke's Medical Center, Quezon City, Philippines
| | | | - Justine Yu
- Memory Center-Institute for Neurosciences, St. Luke's Medical Center, Taguig City, Philippines
| | - Angelo Jamerlan
- Department of Bionano Technology, Gachon University, Seongnam, Republic of Korea
| | - Antonio Ligsay
- Section of Clinical Research, St. Luke's Medical Center - College of Medicine, Quezon City, Philippines
| | - Eva Bagyinszky
- Department of Industrial and Environmental Engineering, Gachon University, Seongnam, Republic of Korea
| | - Seong Soo An
- Department of Bionano Technology, Gachon University, Seongnam, Republic of Korea
| | - Sangyun Kim
- Department of Neurology, Seoul National University College of Medicine & Neurocognitive Behavior Center, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
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