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Bohlega S, Abusrair AH, Al-Qahtani Z, Guzmán-Vega FJ, Ramakrishnan R, Aldosari H, Aldakheel A, Al-Qahtani S, Monies D, Arold ST. Expanding the genotype-phenotype landscape of PDE10A-associated movement disorders. Parkinsonism Relat Disord 2023; 108:105323. [PMID: 36805523 DOI: 10.1016/j.parkreldis.2023.105323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 02/08/2023] [Accepted: 02/10/2023] [Indexed: 02/15/2023]
Abstract
BACKGROUND Phosphodiesterase 10A (PDE10A) controls body movements by regulating cyclic adenosine monophosphate signaling in the basal ganglia. Two classes of PDE10A variants are reported with distinctive genotype-phenotype correlation. The autosomal recessive mutations in the GAF-A and catalytic domains are associated with compromised membrane localization, and manifest with infantile onset chorea, developmental, and cognition delay with normal brain MRI. Conversely, autosomal dominant mutations in the GAF-B domain cause protein aggregates which results in childhood onset chorea in the context of normal cognition and development, with striatal lesions. METHODS Phenotypic characteristics of affected individuals with PDE10A mutations belonging to a single family were recorded. In addition, Sanger sequencing and in silico analysis were used to identify the mutations. Homozygosity mapping was applied together with whole exome sequencing. RESULTS Four individuals from a consanguineous family affected with PDE10A mutations were observed for up to 40 years. Although these individuals displayed a clinical phenotype attributed to the recessive GAF-A mutations, they revealed a bi-allelic GAF-B mutation (c.883G > A:p. D295 N; p.Asp295Asn) that was segregated with all affected individuals. In addition to chorea, we observed peculiar foot deformities and pronounced social phobia, with normal brain MRI. In silico structural analysis suggested that the GAF-B mutation blocked allosteric PDE10A activation. The resulting lack of PDE10A activity likely phenocopies GAF-A mutations, and this is achieved through a distinct mechanism. CONCLUSIONS Collectively, our findings demonstrate the association of recessive and dominant phenotypes of known variants, and further expands the genotype-phenotype landscape of PDE10A-associated movement disorders.
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Affiliation(s)
- Saeed Bohlega
- Movement Disorders Program, Neuroscience Centre, King Faisal Specialist Hospital and Research Centre (KFSH&RC), Riyadh, Kingdom of Saudi Arabia.
| | - Ali H Abusrair
- Movement Disorders Program, Neuroscience Centre, King Faisal Specialist Hospital and Research Centre (KFSH&RC), Riyadh, Kingdom of Saudi Arabia
| | - Zainah Al-Qahtani
- Movement Disorders Program, Neuroscience Centre, King Faisal Specialist Hospital and Research Centre (KFSH&RC), Riyadh, Kingdom of Saudi Arabia
| | - Francisco J Guzmán-Vega
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia; Computational Biology Research Center, King Abdullah University of Science and Technology, (KAUST), Thuwal, Kingdom of Saudi Arabia
| | - Reshmi Ramakrishnan
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia; Computational Biology Research Center, King Abdullah University of Science and Technology, (KAUST), Thuwal, Kingdom of Saudi Arabia
| | - Haya Aldosari
- Department of Genetics, Research Centre, King Faisal Specialist Hospital and Research Centre (KFSH&RC), Riyadh, Kingdom of Saudi Arabia
| | - Amaal Aldakheel
- Movement Disorders Program, Neuroscience Centre, King Faisal Specialist Hospital and Research Centre (KFSH&RC), Riyadh, Kingdom of Saudi Arabia
| | - Salma Al-Qahtani
- Movement Disorders Program, Neuroscience Centre, King Faisal Specialist Hospital and Research Centre (KFSH&RC), Riyadh, Kingdom of Saudi Arabia
| | - Dorota Monies
- Department of Genetics, Research Centre, King Faisal Specialist Hospital and Research Centre (KFSH&RC), Riyadh, Kingdom of Saudi Arabia
| | - Stefan T Arold
- Bioscience Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia; Computational Biology Research Center, King Abdullah University of Science and Technology, (KAUST), Thuwal, Kingdom of Saudi Arabia; Centre de Biologie Structurale (CBS), INSERM, CNRS, Université de Montpellier, F-34090, Montpellier, France
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Scelzo E, Lozano AM, Hamani C, Poon YY, Aldakheel A, Zadikoff C, Lang AE, Moro E. Peduncolopontine nucleus stimulation in progressive supranuclear palsy: a randomised trial. J Neurol Neurosurg Psychiatry 2017; 88:613-616. [PMID: 28214797 DOI: 10.1136/jnnp-2016-315192] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 12/31/2016] [Accepted: 01/24/2017] [Indexed: 11/04/2022]
Affiliation(s)
- Emma Scelzo
- Division of Neurology, CHU Grenoble, Grenoble Alpes University, Grenoble, France.,Clinical Center for Neurotechnology, Neurostimulation and Movement Disorders, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.,Department of Neurology, Policlinico San Donato, University of Milan, Milan, Italy
| | - Andres M Lozano
- Division of Neurosurgery, Toronto Western Hospital, University of Toronto, University Health Network, Toronto, Ontario, Canada
| | - Clement Hamani
- Division of Neurosurgery, Toronto Western Hospital, University of Toronto, University Health Network, Toronto, Ontario, Canada
| | - Yu-Yan Poon
- Movement Disorders Center, Division of Neurology, Toronto Western Hospital, University of Toronto, University Health Network, Toronto, Ontario, Canada
| | - Amaal Aldakheel
- Division of Neurology, CHU Grenoble, Grenoble Alpes University, Grenoble, France
| | - Cindy Zadikoff
- Department of Neurology, Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA
| | - Anthony E Lang
- Movement Disorders Center, Division of Neurology, Toronto Western Hospital, University of Toronto, University Health Network, Toronto, Ontario, Canada
| | - Elena Moro
- Division of Neurology, CHU Grenoble, Grenoble Alpes University, Grenoble, France.,Movement Disorders Center, Division of Neurology, Toronto Western Hospital, University of Toronto, University Health Network, Toronto, Ontario, Canada
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Abstract
PURPOSE OF REVIEW This review discusses movement disorders that occur during pregnancy, the treatment of preexisting movement disorders, and the influence the pregnant state has on movement disorders symptoms, in order to guide clinicians in providing better counseling for female patients who are pregnant or considering pregnancy. RECENT FINDINGS Unique considerations for movement disorders during pregnancy include investigations and their safety during pregnancy and the impact of treatment on both the pregnant patient and her fetus. SUMMARY The most common movement disorders arising in pregnancy are restless leg syndrome and chorea gravidarum. Preexisting movement disorders in women who become pregnant may also be seen.
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