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Intellectual disability v10.79 GTPBP1 Achchuthan Shanmugasundram Tag Q3_25_promote_green was removed from gene: GTPBP1.
Tag Q3_26_promote_green tag was added to gene: GTPBP1.
Intellectual disability v10.79 GTPBP1 Achchuthan Shanmugasundram Classified gene: GTPBP1 as Amber List (moderate evidence)
Intellectual disability v10.79 GTPBP1 Achchuthan Shanmugasundram Added comment: Comment on list classification: There are three unrelated patients reported with biallelic GTPBP1 variants and with neurodevelopmental impairment. Hence, this gene can be promoted to green rating in the next GMS update.
Intellectual disability v10.79 GTPBP1 Achchuthan Shanmugasundram Gene: gtpbp1 has been classified as Amber List (Moderate Evidence).
Intellectual disability v10.78 GTPBP1 Achchuthan Shanmugasundram Tag Q3_25_promote_green tag was added to gene: GTPBP1.
Intellectual disability v10.78 GTPBP1 Achchuthan Shanmugasundram gene: GTPBP1 was added
gene: GTPBP1 was added to Intellectual disability. Sources: Literature
Mode of inheritance for gene: GTPBP1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: GTPBP1 were set to 38118446
Phenotypes for gene: GTPBP1 were set to Neurodevelopmental disorder with characteristic facial and ectodermal features and tetraparesis 1, OMIM:620888; neurodevelopmental disorder with characteristic facial and ectodermal features and tetraparesis 1, MONDO:0975745
Review for gene: GTPBP1 was set to GREEN
Added comment: PMID:38118446 (2024) reported a cohort of 20 individuals from 16 families with distinct neurodevelopmental disorders (NDDs) and syndromic facial features and identified with biallelic variants in either GTPBP1 or GTPBP2 genes. Of these, four patients from three unrelated families were identified with homozygous variants in GTPBP1 gene. Two families have different NMD-predicted nonsense variants and the third has a missense variant, and all are absent from gnomad v4.1.1.

The shared clinical features of the syndrome include microcephaly, severe/ profound neurodevelopmental impairment, pathognomonic craniofacial features, and ectodermal defects. In addition, abnormal vision and/or hearing, progressive spasticity, choreoathetoid movements, refractory epilepsy, and brain atrophy were part of the core phenotype of this syndrome.

Severe/ profound neurodevelopmental impairment was present in 3 patients from 3 families with GTPBP1 variants.

This gene has been associated with relevant phenotypes in OMIM (MIM #620888, last accessed 29 July 2026) and in Gene2Phenotype ('moderate' rating on the DD panel).
Sources: Literature
Intellectual disability v6.11 AGTPBP1 Achchuthan Shanmugasundram Tag Q3_23_promote_green was removed from gene: AGTPBP1.
Intellectual disability v6.11 AGTPBP1 Sarah Leigh reviewed gene: AGTPBP1: Rating: GREEN; Mode of pathogenicity: ; Publications: ; Phenotypes: ; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Intellectual disability v6.10 AGTPBP1 Achchuthan Shanmugasundram Source Expert Review Green was added to AGTPBP1.
Source NHS GMS was added to AGTPBP1.
Rating Changed from Amber List (moderate evidence) to Green List (high evidence)
Intellectual disability v5.225 AGTPBP1 Achchuthan Shanmugasundram Classified gene: AGTPBP1 as Amber List (moderate evidence)
Intellectual disability v5.225 AGTPBP1 Achchuthan Shanmugasundram Gene: agtpbp1 has been classified as Amber List (Moderate Evidence).
Intellectual disability v5.224 AGTPBP1 Achchuthan Shanmugasundram Tag Q3_23_promote_green tag was added to gene: AGTPBP1.
Intellectual disability v5.224 AGTPBP1 Achchuthan Shanmugasundram changed review comment from: PMID:30420557 reported the identification of either homozygous or compound heterozygous variants in AGTPBP1 gene in 13 individuals from 10 unrelated families with infantile‐onset neurodegeneration. Impaired intellectual development was severe in several patients: Two had severe cognitive delay, one had profound cognitive delay, five had no speech and four had no visual recognition. In addition, functional studies with mouse models have recapitulated the human phenotype.

This gene has been associated with relevant phenotypes in both OMIM (MIM #618276) and Gene2Phenotype (on DD panel with 'definitive' rating).
Sources: Literature; to: PMID:30420557 reported the identification of either homozygous or compound heterozygous variants in AGTPBP1 gene in 13 individuals from 10 unrelated families with infantile‐onset neurodegeneration. Impaired intellectual development was severe in several patients: Two had severe cognitive delay, one had profound cognitive delay, five had no speech and four had no visual recognition. In addition, functional studies with mouse models have recapitulated the human phenotype.

This gene has been associated with relevant phenotypes in both OMIM (MIM #618276) and Gene2Phenotype (on DD panel with 'definitive' rating).
Sources: Literature
Intellectual disability v5.224 AGTPBP1 Achchuthan Shanmugasundram changed review comment from: PMID:30420557 reported the identification of either homozygous or compound heterozygous variants in AGTPBP1 gene in 13 individuals from 10 unrelated families with infantile‐onset neurodegeneration. Impaired intellectual development was severe, and several patients were unable to speak or have eye contact.

This gene has been associated with relevant phenotypes in both OMIM (MIM #618276) and Gene2Phenotype (on DD panel with 'definitive' rating).
Sources: Literature; to: PMID:30420557 reported the identification of either homozygous or compound heterozygous variants in AGTPBP1 gene in 13 individuals from 10 unrelated families with infantile‐onset neurodegeneration. Impaired intellectual development was severe in several patients: Two had severe cognitive delay, one had profound cognitive delay, five had no speech and four had no visual recognition. In addition, functional studies with mouse models have recapitulated the human phenotype.

This gene has been associated with relevant phenotypes in both OMIM (MIM #618276) and Gene2Phenotype (on DD panel with 'definitive' rating).
Sources: Literature
Intellectual disability v5.224 AGTPBP1 Achchuthan Shanmugasundram gene: AGTPBP1 was added
gene: AGTPBP1 was added to Intellectual disability - microarray and sequencing. Sources: Literature
Mode of inheritance for gene: AGTPBP1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: AGTPBP1 were set to 30420557
Phenotypes for gene: AGTPBP1 were set to Neurodegeneration, childhood-onset, with cerebellar atrophy, OMIM:618276
Review for gene: AGTPBP1 was set to GREEN
Added comment: PMID:30420557 reported the identification of either homozygous or compound heterozygous variants in AGTPBP1 gene in 13 individuals from 10 unrelated families with infantile‐onset neurodegeneration. Impaired intellectual development was severe, and several patients were unable to speak or have eye contact.

This gene has been associated with relevant phenotypes in both OMIM (MIM #618276) and Gene2Phenotype (on DD panel with 'definitive' rating).
Sources: Literature