Case Report: Complete Maternal Uniparental Disomy of Chromosome 2 With a Novel UNC80 Splicing Variant c.5609-4G> A in a Chinese Patient With Infantile Hypotonia With Psychomotor Retardation and Characteristic Facies 2
| العنوان: | Case Report: Complete Maternal Uniparental Disomy of Chromosome 2 With a Novel UNC80 Splicing Variant c.5609-4G> A in a Chinese Patient With Infantile Hypotonia With Psychomotor Retardation and Characteristic Facies 2 |
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| المؤلفون: | Yiju Wei, Yilun Tao, Wenxia Song, Dong Han, Xiaoze Li, Lihong Wang |
| المصدر: | Frontiers in Genetics, Vol 12 (2021) Frontiers in Genetics |
| بيانات النشر: | Frontiers Media S.A., 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Proband, congenital, hereditary, and neonatal diseases and abnormalities, Case Report, Biology, QH426-470, whole exome sequencing, symbols.namesake, Neurodevelopmental disorder, medicine, Genetics, Global developmental delay, chromosome 2, Genetics (clinical), Exome sequencing, Sanger sequencing, Psychomotor retardation, UNC80 gene, medicine.disease, Uniparental Isodisomy, symbols, Molecular Medicine, medicine.symptom, maternal uniparental disomy, SNP array |
| الوصف: | Background: Infantile hypotonia with psychomotor retardation and characteristic facies 2 (IHPRF2) is a rare autosomal recessive neurodevelopmental disorder caused by mutations in the UNC80 gene. It is characterized by severe global developmental delay, poor or absent speech and absent or limited walking abilities. The current study explored a case of a Chinese patient with IHPRF2 caused by a novel splicing variant of UNC80.Case Report: The proband is a 8-year-old Chinese male manifested with global developmental delay, severe truncal hypotonia, absent speech and intellectual disability. SNP array analysis revealed a uniparental isodisomy of the entire chromosome 2 [UPD(2)] in the proband. Whole exome sequencing (WES) subsequently identified a novel mutation c.5609-4G>A in the UNC80 gene, which was inherited from his mother and was confirmed by Sanger sequencing, indicating that UPD(2) was of maternal origin.Conclusion: A novel UNC80 homozygous splicing variant c.5609-4G>A associated with maternal UPD(2) was identified. These findings indicate that UPD poses a high risk of autosomal recessive diseases, and provides information on the variant spectrum for UNC80. Our findings elucidate on understanding of the genotype-phenotype associations that occur in IHPRF2 patients. |
| اللغة: | English |
| تدمد: | 1664-8021 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::868c4e1dd378ff71eea6934b8d4d45b4 https://www.frontiersin.org/articles/10.3389/fgene.2021.747422/full |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....868c4e1dd378ff71eea6934b8d4d45b4 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 16648021 |
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