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Genetic Epilepsy v0.1370 GRIK2 Zornitza Stark Phenotypes for gene: GRIK2 were changed from Mental retardation, autosomal recessive, 6 MIM# 611092; nonsyndromic neurodevelopmental disorder (NDD) to Mental retardation, autosomal recessive, 6 MIM# 611092; Neurodevelopmental disorder with impaired language and ataxia and with or without seizures, MIM# 619580
Genetic Epilepsy v0.1369 GRIK2 Zornitza Stark reviewed gene: GRIK2: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Neurodevelopmental disorder with impaired language and ataxia and with or without seizures, MIM# 619580; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Genetic Epilepsy v0.1189 GRIK2 Zornitza Stark Marked gene: GRIK2 as ready
Genetic Epilepsy v0.1189 GRIK2 Zornitza Stark Gene: grik2 has been classified as Green List (High Evidence).
Genetic Epilepsy v0.1189 GRIK2 Zornitza Stark Classified gene: GRIK2 as Green List (high evidence)
Genetic Epilepsy v0.1189 GRIK2 Zornitza Stark Gene: grik2 has been classified as Green List (High Evidence).
Genetic Epilepsy v0.1188 GRIK2 Zornitza Stark Classified gene: GRIK2 as Green List (high evidence)
Genetic Epilepsy v0.1188 GRIK2 Zornitza Stark Gene: grik2 has been classified as Green List (High Evidence).
Genetic Epilepsy v0.1187 GRIK2 Danielle Ariti gene: GRIK2 was added
gene: GRIK2 was added to Genetic Epilepsy. Sources: Literature
Mode of inheritance for gene: GRIK2 was set to BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Publications for gene: GRIK2 were set to 34375587; 17847003; 25039795
Phenotypes for gene: GRIK2 were set to Mental retardation, autosomal recessive, 6 MIM# 611092; nonsyndromic neurodevelopmental disorder (NDD)
Review for gene: GRIK2 was set to GREEN
Added comment: Over 10 individuals with variants in GRIK2; Bi-allelic and mono-allelic; loss of function

2 (sibs) with bi-allelic truncating variants and 1 family with bi-allelic deletion (removing exons 7 and 8).
11 individuals with de novo mono-allelic missense variants
(5x with the same missense variant c.1969G>A (p.Ala657Thr) all the others were near this location).

Associated with nonsyndromic neurodevelopmental disorder (NDD) with intellectual disability and developmental delay as core features with 30-50% individuals experiencing seizures.
Sources: Literature