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| Ataxia and cerebellar anomalies - narrow panel v2.33 | SVBP | Arina Puzriakova Classified gene: SVBP as Amber List (moderate evidence) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ataxia and cerebellar anomalies - narrow panel v2.33 | SVBP |
Arina Puzriakova Added comment: Comment on list classification: New gene added by Zornitza Stark (Australian Genomics). SVBP is associated with a relevant phenotype in OMIM. 12 individuals from 5 independent families (PMIDs: 31363758 and 30607023) reported at present with biallelic variants. Rating Amber as phenotypes include ataxia in only 2 families (remaining cases present spasticity rather than ataxia). |
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| Ataxia and cerebellar anomalies - narrow panel v2.33 | SVBP | Arina Puzriakova Gene: svbp has been classified as Amber List (Moderate Evidence). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ataxia and cerebellar anomalies - narrow panel v2.32 | SVBP | Arina Puzriakova Phenotypes for gene: SVBP were changed from Neurodevelopmental disorder with ataxia, hypotonia, and microcephaly, OMIM #618569 to Neurodevelopmental disorder with ataxia, hypotonia, and microcephaly, OMIM:618569; Neurodevelopmental disorder with ataxia, hypotonia, and microcephaly, MONDO:0032816 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ataxia and cerebellar anomalies - narrow panel v2.12 | SVBP |
Zornitza Stark gene: SVBP was added gene: SVBP was added to Ataxia and cerebellar anomalies - narrow panel. Sources: Expert list Mode of inheritance for gene: SVBP was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: SVBP were set to 31363758; 30607023 Phenotypes for gene: SVBP were set to Neurodevelopmental disorder with ataxia, hypotonia, and microcephaly, OMIM #618569 Review for gene: SVBP was set to GREEN gene: SVBP was marked as current diagnostic Added comment: 5 families with homozygous mutations in SVBP; syndromic cause of paediatric ataxia. Some shared same founder variant, p.Q28*. The mutations segregated with the disorder in all families. In vitro functional cellular expression studies showed that protein levels of the SVBP mutants were barely detectable, suggesting instability, and that the mutant proteins had lost VASH/SVBP catalytic detyrosination activity toward tubulin. Knockdown of about 50% Svbp expression using shRNA in rat hippocampal neurons impaired the formation of excitatory synapses compared to controls. Sources: Expert list |
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