期刊
AMERICAN JOURNAL OF MEDICAL GENETICS PART A
卷 182, 期 11, 页码 2675-2679出版社
WILEY
DOI: 10.1002/ajmg.a.61803
关键词
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TheCAMK2Bgene encodes the beta-subunit of calcium/calmodulin-dependent protein kinase II (CAMK2), an enzyme that has crucial roles in synaptic plasticity, especially in hippocampal and cerebellar neurons. Heterozygous variants inCAMK2Bcause a rare neurodevelopmental disorder, with 40% of the reported cases sharing the same variant: c.416C>T, p.(P139L). This case report describes a 22-year-old patient with this recurrent variant, who presents with severe intellectual disability, absence of language, hypotonia, microcephaly, dysmorphic features, epilepsy, behavioral abnormalities, motor stereotypies, optic atrophy, and progressive cerebellar atrophy. Notably, this patient is the oldest reported so far and allows us to better delineate the clinical phenotype associated with this variant, adding clinical aspects never described before, such as epilepsy, optic atrophy, scoliosis, and neuroradiological changes characterized by progressive cerebellar atrophy.
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