1
|
Skwara J, Nowicki M, Sharif L, Milanowski Ł, Dulski J, Elert-Dobkowska E, Skrzypek K, Hoffman-Zacharska D, Koziorowski D, Sławek J. Differential diagnosis of Huntington's disease- neurological aspects of NKX2-1-related disorders. J Neural Transm (Vienna) 2024:10.1007/s00702-024-02800-3. [PMID: 38916623 DOI: 10.1007/s00702-024-02800-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 06/12/2024] [Indexed: 06/26/2024]
Abstract
Benign hereditary chorea (BHC) is an inherited neurological disorder consisting of childhood-onset, nonprogressive chorea, generally without any other manifestations. In most reported cases, the inheritance of BHC is autosomal dominant but both incomplete penetrance and variable expressivity are observed and can be caused by NKX2-1 mutations. The spectrum contains choreoathetosis, congenital hypothyroidism, and neonatal respiratory distress syndrome. The neurological symptoms can be misdiagnosed as Huntington's disease (HD). The two Polish families were diagnosed with NKX2-1 gene mutations and a literature review concerning the NKX2-1-related disorders was conducted. All family members were examined by experienced movement disorders specialists. PubMed database was searched to obtain previously described NKX2-1 cases. Whole exome sequencing (WES) was performed in one proband (Family A) and direct NKX2-1 sequencing in the second (Family B). Two Polish families were diagnosed with NKX2-1 gene mutations (p.Trp208Leu and p.Cys117Alafs*8). In one family, the co-occurrence of HD was reported. Forty-nine publications were included in the literature review and symptoms of 195 patients with confirmed NKX2-1 mutation were analyzed. The most common symptoms were chorea and choreiform movements, and delayed motor milestones. The NKX2-1 mutation should always be considered as a potential diagnosis in families with chorea, even with a family history of HD. Lack of chorea does not exclude the NKX2-1-related disorders.
Collapse
Affiliation(s)
- Julia Skwara
- Student's Scientific Group, Department of Neurology, Faculty of Health Sciences, Medical University of Warsaw, Warsaw, Poland
| | - Maciej Nowicki
- Student's Scientific Group, Department of Neurology, Faculty of Health Sciences, Medical University of Warsaw, Warsaw, Poland
| | - Lucia Sharif
- Student's Scientific Group, Department of Neurology, Faculty of Health Sciences, Medical University of Warsaw, Warsaw, Poland
| | - Łukasz Milanowski
- Department of Neurology, Faculty of Health Sciences, Medical University of Warsaw, Ludwika Kondratowicza 8, Warsaw, 03-242, Poland.
| | - Jarosław Dulski
- Department of Neurology and Stroke, St. Adalbert Hospital, Gdańsk, Poland
- Department of Neurology, Mayo Clinic, Jacksonville, FL, USA
| | | | - Katarzyna Skrzypek
- Department of Medical Genetics, Institute of Mother and Child, Warsaw, Poland
| | | | - Dariusz Koziorowski
- Department of Neurology, Faculty of Health Sciences, Medical University of Warsaw, Ludwika Kondratowicza 8, Warsaw, 03-242, Poland
| | - Jarosław Sławek
- Department of Neurology and Stroke, St. Adalbert Hospital, Gdańsk, Poland
- Division of Neurological and Psychiatric Nursing, Faculty of Health Sciences, Medical University of Gdansk, Gdańsk, Poland
| |
Collapse
|
2
|
Altered pituitary morphology as a sign of benign hereditary chorea caused by TITF1/NKX2.1 mutations. Neurogenetics 2022; 23:91-102. [PMID: 35079915 PMCID: PMC8960566 DOI: 10.1007/s10048-021-00680-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 12/23/2021] [Indexed: 11/21/2022]
Abstract
Benign hereditary chorea (BHC) is a rare genetically heterogeneous movement disorder, in which conventional neuroimaging has been reported as normal in most cases. Cystic pituitary abnormalities and features of empty sella have been described in only 7 patients with BHC to date. We present 4 patients from 2 families with a BHC phenotype, 3 of whom underwent targeted pituitary MR imaging and genetic testing. All four patients in the two families displayed a classic BHC phenotype. The targeted pituitary MR imaging demonstrated abnormal pituitary sella morphology. Genetic testing was performed in three patients, and showed mutations causing BHC in three of the patients, as well as identifying a novel nonsense mutation of the TITF1/NKX2-1 gene in one of the patients. The presence of the abnormal pituitary sella in two affected members of the same family supports the hypothesis that this sign is a distinct feature of the BHC phenotype spectrum due to mutations in the TITF1 gene. Interestingly, these abnormalities seem to develop in adult life and are progressive. They occur in at least 26% of patients affected with Brain-lung-thyroid syndrome. As a part of the management of these patients we recommend to perform follow-up MRI brain with dedicated pituitary imaging also in adult life as the abnormality can occur years after the onset of chorea.
Collapse
|