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Intellectual disability syndromic and non-syndromic v0.5255 RPH3A Elena Savva Classified gene: RPH3A as Green List (high evidence)
Intellectual disability syndromic and non-syndromic v0.5255 RPH3A Elena Savva Gene: rph3a has been classified as Green List (High Evidence).
Intellectual disability syndromic and non-syndromic v0.5255 RPH3A Elena Savva Classified gene: RPH3A as Green List (high evidence)
Intellectual disability syndromic and non-syndromic v0.5255 RPH3A Elena Savva Gene: rph3a has been classified as Green List (High Evidence).
Intellectual disability syndromic and non-syndromic v0.5254 RPH3A Elena Savva Marked gene: RPH3A as ready
Intellectual disability syndromic and non-syndromic v0.5254 RPH3A Elena Savva Gene: rph3a has been removed from the panel.
Intellectual disability syndromic and non-syndromic v0.5250 RPH3A Lucy Spencer gene: RPH3A was added
gene: RPH3A was added to Intellectual disability syndromic and non-syndromic. Sources: Literature
Mode of inheritance for gene: RPH3A was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: RPH3A were set to 37403762; 29441694
Phenotypes for gene: RPH3A were set to Neurodevelopmental disorder (MONDO#0700092), RPH3A-related
Review for gene: RPH3A was set to GREEN
Added comment: PMID: 37403762- 6 patients with RPH3A variant. All 6 have ID, 4 have epilepsy, 2 with obesity, 1 with dysmorphic features. All 6 have missense variants, 3 shown to be de novo, the other 3 parents were not available for testing. I patient also had language and motor impairment, breathing issues and mixed hypo/hypertonia- he also had variants in CUL4B, PRKAG2, SCN4A, none of these genes cause seizures (which he had).

Patch clamp studies on 2 of the missense showed they increased either the number of NMDA receptors on neuron membrane surface or increased their conductance. Study suggests that the variants interrupt the normal role of RPH3A activity at the synaptic NMDAR complex which is needed for the induction of synaptic plasticity and NMDAR-dependant behaviours

Also previously 1 biallelic patient was reported, PMID: 29441694- 1 girl with learning disabilities, tremors, ataxia, hyperglycemia and muscle fatigability. Chet for 2 RPH3A missense. Functional analysis showed strong and marginal impairment of protein binding for each variant.
Sources: Literature