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Intellectual disability syndromic and non-syndromic v0.5688 WDR44 Zornitza Stark Marked gene: WDR44 as ready
Intellectual disability syndromic and non-syndromic v0.5688 WDR44 Zornitza Stark Gene: wdr44 has been classified as Green List (High Evidence).
Intellectual disability syndromic and non-syndromic v0.5688 WDR44 Zornitza Stark Classified gene: WDR44 as Green List (high evidence)
Intellectual disability syndromic and non-syndromic v0.5688 WDR44 Zornitza Stark Gene: wdr44 has been classified as Green List (High Evidence).
Intellectual disability syndromic and non-syndromic v0.5687 WDR44 Zornitza Stark gene: WDR44 was added
gene: WDR44 was added to Intellectual disability syndromic and non-syndromic. Sources: Literature
Mode of inheritance for gene: WDR44 was set to X-LINKED: hemizygous mutation in males, biallelic mutations in females
Publications for gene: WDR44 were set to 38191484
Phenotypes for gene: WDR44 were set to Ciliopathy, MONDO:0005308, WDR44-related
Review for gene: WDR44 was set to GREEN
Added comment: 11 male patients with 6 missense and 1 nonsense variant in WDR44 displaying a wide range of cognitive impairment and variable congenital anomalies associated with primary cilium dysfunction. All patients had learning difficulties with 8 labelled as intellectually disabled (mild-moderate). Other clinical features included anomalies of craniofacial, musculoskeletal, brain, renal and cardiac development.
WDR44 is a negative regulator of ciliogenesis. Increased binding is hypothesised to underlie the pathogenicity of WDR44 variants identified in this cohort. Functional data supported impaired ciliogenesis initiation in patient fibroblasts and a zebrafish model. A zebrafish model recapitulated the human phenotype when morphants expressed WDR44 L668S, D669N, S764F, G782C, H839R, and R733* variants. Of note, D648G or N840S did not recapitulate the phenotype in the zebrafish model.
The studies supported a GoF mechanism, but the authors could not rule out that LoF of WDR44 contributes to the ciliopathy-like phenotype observed, because protein expression data was only available for a limited number of patients.
Sources: Literature
Intellectual disability syndromic and non-syndromic v0.5435 WDR45 Zornitza Stark Marked gene: WDR45 as ready
Intellectual disability syndromic and non-syndromic v0.5435 WDR45 Zornitza Stark Gene: wdr45 has been classified as Green List (High Evidence).
Intellectual disability syndromic and non-syndromic v0.5435 WDR45 Zornitza Stark Phenotypes for gene: WDR45 were changed from to X-linked complex neurodevelopmental disorder MONDO:0100148; neurodegeneration with brain iron accumulation 5 MONDO:0010476
Intellectual disability syndromic and non-syndromic v0.5434 WDR45 Zornitza Stark Publications for gene: WDR45 were set to
Intellectual disability syndromic and non-syndromic v0.5433 WDR45 Zornitza Stark Mode of inheritance for gene: WDR45 was changed from Unknown to X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
Intellectual disability syndromic and non-syndromic v0.5399 WDR45 Kaitlyn Dianna Weldon reviewed gene: WDR45: Rating: GREEN; Mode of pathogenicity: None; Publications: 28211668; Phenotypes: X-linked complex neurodevelopmental disorder MONDO:0100148, neurodegeneration with brain iron accumulation 5 MONDO:0010476; Mode of inheritance: X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
Intellectual disability syndromic and non-syndromic v0.3518 WDR45B Zornitza Stark Marked gene: WDR45B as ready
Intellectual disability syndromic and non-syndromic v0.3518 WDR45B Zornitza Stark Gene: wdr45b has been classified as Green List (High Evidence).
Intellectual disability syndromic and non-syndromic v0.3518 WDR45B Zornitza Stark Phenotypes for gene: WDR45B were changed from to Neurodevelopmental disorder with spastic quadriplegia and brain abnormalities with or without seizures, MIM# 617977
Intellectual disability syndromic and non-syndromic v0.3517 WDR45B Zornitza Stark Publications for gene: WDR45B were set to
Intellectual disability syndromic and non-syndromic v0.3516 WDR45B Zornitza Stark Mode of inheritance for gene: WDR45B was changed from Unknown to BIALLELIC, autosomal or pseudoautosomal
Intellectual disability syndromic and non-syndromic v0.3515 WDR45B Zornitza Stark reviewed gene: WDR45B: Rating: GREEN; Mode of pathogenicity: None; Publications: 21937992, 28503735, 27431290; Phenotypes: Neurodevelopmental disorder with spastic quadriplegia and brain abnormalities with or without seizures, MIM# 617977; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Intellectual disability syndromic and non-syndromic v0.2355 WDR4 Zornitza Stark Marked gene: WDR4 as ready
Intellectual disability syndromic and non-syndromic v0.2355 WDR4 Zornitza Stark Added comment: Comment when marking as ready: Borderline Green rating: three families but two have the same homozygous variant; some functional data to support gene-disease association.
Intellectual disability syndromic and non-syndromic v0.2355 WDR4 Zornitza Stark Gene: wdr4 has been classified as Green List (High Evidence).
Intellectual disability syndromic and non-syndromic v0.2355 WDR4 Zornitza Stark Marked gene: WDR4 as ready
Intellectual disability syndromic and non-syndromic v0.2355 WDR4 Zornitza Stark Gene: wdr4 has been classified as Green List (High Evidence).
Intellectual disability syndromic and non-syndromic v0.2355 WDR4 Zornitza Stark Publications for gene: WDR4 were set to PubMed: 26416026, 30079490, 29597095, 28617965
Intellectual disability syndromic and non-syndromic v0.2138 WDR4 Chirag Patel changed review comment from: Galloway-Mowat syndrome 6, OMIM #618347:

1 family with 2 sibs with GMS and compound heterozygous mutations in the WDR4 gene, segregated with the disorder in the family. Functional studies of the variants and studies of patient cells were not performed.

1 family with 1 child with GMS and compound heterozygous mutations in the WDR4 gene, segregated with the disorder in the family. Functional studies of the variants and studies of patient cells were not performed.

1 family with 4 sibs with GMS and homozygous splice site mutation in the WDR4 gene. Functional studies of the variant and studies of patient cells were not performed.



Microcephaly, growth deficiency, seizures, and brain malformations; OMIM #618346:

2 unrelated patients with intrauterine growth retardation, postnatal growth deficiency with severe microcephaly, and poor or absent psychomotor development. Testing found the same homozygous missense mutation in the WDR4 gene, which segregated with the disorder in both families. Studies of patient cells and modeling of the corresponding mutation in yeast showed that the mutation caused a significant reduction in m(7)G46 methylation of specific tRNAs species, particularly at higher temperatures. This was associated with a growth defect in yeast, thus offering a potential mechanism for the growth defects observed in patients with the mutation. The findings suggested that abnormal tRNA modification is a major contributor to disease pathogenesis.
Sources: Expert list; to: Galloway-Mowat syndrome 6, OMIM #618347:

1 family with 2 sibs with GMS and compound heterozygous mutations in the WDR4 gene, segregated with the disorder in the family. Functional studies of the variants and studies of patient cells were not performed.

1 family with 1 child with GMS and compound heterozygous mutations in the WDR4 gene, segregated with the disorder in the family. Functional studies of the variants and studies of patient cells were not performed.

1 family with 4 sibs with GMS and homozygous splice site mutation in the WDR4 gene. Functional studies of the variant and studies of patient cells were not performed.
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Microcephaly, growth deficiency, seizures, and brain malformations; OMIM #618346:

2 unrelated patients with intrauterine growth retardation, postnatal growth deficiency with severe microcephaly, and poor or absent psychomotor development. Testing found the same homozygous missense mutation in the WDR4 gene, which segregated with the disorder in both families. Studies of patient cells and modeling of the corresponding mutation in yeast showed that the mutation caused a significant reduction in m(7)G46 methylation of specific tRNAs species, particularly at higher temperatures. This was associated with a growth defect in yeast, thus offering a potential mechanism for the growth defects observed in patients with the mutation. The findings suggested that abnormal tRNA modification is a major contributor to disease pathogenesis.
Sources: Expert list
Intellectual disability syndromic and non-syndromic v0.2138 WDR4 Chirag Patel Classified gene: WDR4 as Green List (high evidence)
Intellectual disability syndromic and non-syndromic v0.2138 WDR4 Chirag Patel Gene: wdr4 has been classified as Green List (High Evidence).
Intellectual disability syndromic and non-syndromic v0.2137 WDR4 Chirag Patel gene: WDR4 was added
gene: WDR4 was added to Intellectual disability syndromic and non-syndromic. Sources: Expert list
Mode of inheritance for gene: WDR4 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: WDR4 were set to PubMed: 26416026, 30079490, 29597095, 28617965
Phenotypes for gene: WDR4 were set to Galloway-Mowat syndrome 6, OMIM #618347; Microcephaly, growth deficiency, seizures, and brain malformations, OMIM #618346
Review for gene: WDR4 was set to GREEN
Added comment: Galloway-Mowat syndrome 6, OMIM #618347:

1 family with 2 sibs with GMS and compound heterozygous mutations in the WDR4 gene, segregated with the disorder in the family. Functional studies of the variants and studies of patient cells were not performed.

1 family with 1 child with GMS and compound heterozygous mutations in the WDR4 gene, segregated with the disorder in the family. Functional studies of the variants and studies of patient cells were not performed.

1 family with 4 sibs with GMS and homozygous splice site mutation in the WDR4 gene. Functional studies of the variant and studies of patient cells were not performed.



Microcephaly, growth deficiency, seizures, and brain malformations; OMIM #618346:

2 unrelated patients with intrauterine growth retardation, postnatal growth deficiency with severe microcephaly, and poor or absent psychomotor development. Testing found the same homozygous missense mutation in the WDR4 gene, which segregated with the disorder in both families. Studies of patient cells and modeling of the corresponding mutation in yeast showed that the mutation caused a significant reduction in m(7)G46 methylation of specific tRNAs species, particularly at higher temperatures. This was associated with a growth defect in yeast, thus offering a potential mechanism for the growth defects observed in patients with the mutation. The findings suggested that abnormal tRNA modification is a major contributor to disease pathogenesis.
Sources: Expert list
Intellectual disability syndromic and non-syndromic v0.0 WDR45B Zornitza Stark gene: WDR45B was added
gene: WDR45B was added to Intellectual disability, syndromic and non-syndromic_GHQ. Sources: Expert Review Green,Genetic Health Queensland
Mode of inheritance for gene: WDR45B was set to Unknown
Intellectual disability syndromic and non-syndromic v0.0 WDR45 Zornitza Stark gene: WDR45 was added
gene: WDR45 was added to Intellectual disability, syndromic and non-syndromic_GHQ. Sources: Expert Review Green,Genetic Health Queensland
Mode of inheritance for gene: WDR45 was set to Unknown