Unlabelled: Our case report describes a 34-year-old patient sent for magnetic resonance imaging (MRI) after four years of slow onset neurological symptoms. An MRI of her brain showed moderate to severe atrophy of the cerebellum and brainstem. She has a family history of spinocerebellar ataxia and has known STUB1 mutation. Imaging features, genetic analysis, and clinical history are in keeping with the SCAR-16 type of STUB1-associated cerebellar ataxia.
Teaching Point: This case report will help the radiologist to familiarize themselves with the CT and MRI features of STUB1-associated cerebellar ataxia and will provide suggestions to further differentiate between the SCAR-16 and SCA-48 types of STUB1-associated cerebellar ataxia.
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http://dx.doi.org/10.5334/jbsr.2902 | DOI Listing |
Cerebellum
March 2025
Molecular Genetics Laboratory, Department of Psychiatry, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore, India.
Spinocerebellar ataxia type 12 (SCA12), an autosomal dominant cerebellar ataxia, caused by an expansion of (CAG) in the 5' of the PPP2R2B gene on chr5q32, is common in India. The illness often manifests late in life, with diverse neurological and psychiatric symptoms, suggesting involvement of different brain regions. Prominent neuronal loss and atrophy of the cerebellum have been noted earlier.
View Article and Find Full Text PDFBreast Cancer Res
March 2025
Inserm, U1331, Institut Curie, PSL University, Mines ParisTech, Paris, France.
Background: The ataxia-telangiectasia mutated (ATM) kinase phosphorylates and activates several downstream targets that are essential for DNA damage repair, cell cycle inhibition and apoptosis. Germline biallelic inactivation of the ATM gene causes ataxia-telangiectasia (A-T), and heterozygous pathogenic variant (PV) carriers are at increased risk of cancer, notably breast cancer. This study aimed to investigate whether DNA methylation profiling can be useful as a biomarker to identify tumors arising in ATM PV carriers, which may help for the management and optimal tailoring of therapies of these patients.
View Article and Find Full Text PDFCerebellum
March 2025
Division of Neurology, Department of Clinical Medicine, Universidade Federal do Ceará, Ceará, Brazil.
Unlabelled: Hereditary cerebellar ataxias are a diverse group of neurodegenerative disorders characterized by progressive cerebellar dysfunction and possible multisystemic involvement. While significant advancements have been made in understanding autosomal dominant cerebellar ataxias (ADCAs), autosomal recessive cerebellar ataxias (ARCAs) remain less extensively investigated than autosomal dominant ataxias, particularly in regions with high consanguinity. This study aimed to characterize 57 patients with ARCAs in Ceará, northeast Brazil.
View Article and Find Full Text PDFClin Neurol Neurosurg
March 2025
Neurogenetics Research Center, Instituto Nacional de Ciencias Neurológicas, Lima, Peru; Neurogenetics Working Group, Universidad Cientifica del Sur, Lima, Peru. Electronic address:
Introduction: Ataxia with oculomotor apraxia type 2 (AOA2) is a rare autosomal recessive cerebellar ataxia characterized by progressive cerebellar ataxia, sensorimotor peripheral neuropathy, and occasional oculomotor apraxia.
Case Report: A 50-year-old male with a history of orthopedic shoe use since childhood presented with slowly progressive ataxia and neuropathy. Laboratory tests showed elevated serum alpha-fetoprotein levels and increased total cholesterol.
J Neurol
March 2025
Programa de Pós-Graduação em Genética e Biologia Molecular, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
Background: Spinocerebellar ataxia type 10 (SCA10), due to an ATTCT repeat expansion in ATXN10, has variable expressivity and the role of presence (ATTCTint +) and absence (ATTCTint-) of interruptions in the repeat is not clear. We aimed to describe the relations between ATTCTint + and age at onset, seizures, and neurologic severity in ataxic and non-ataxic carriers from Brazil.
Methods: Family, age at onset (AO), and seizures data plus DNA were obtained from symptomatic carriers already diagnosed in Porto Alegre, Curitiba, and São Paulo, Brazil.
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