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Fetal anomalies v2.8 KIF21A Hannah Robinson gene: KIF21A was added
gene: KIF21A was added to Fetal anomalies. Sources: Literature,NHS GMS
Mode of inheritance for gene: KIF21A was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: KIF21A were set to 34740919
Phenotypes for gene: KIF21A were set to Arthrogryposis; fetal akinesia
Penetrance for gene: KIF21A were set to unknown
Review for gene: KIF21A was set to GREEN
gene: KIF21A was marked as current diagnostic
Added comment: Falb et al 2023 (PMID: 34740919) describe two unrelated families in which biallelic loss of function variants segregated with a severe form of fetal akinesia characterised by arthrogryposis multiplex, pulmonary hypoplasia and variable facial dysmorphisms.

Exeter Genomics Laboratory has identified an unrelated third case homozygous for a nonsense variant in KIF21A. The patient had an antenatal diagnosis of talipes, arthrogryposis, polyhydramnios and lack of fetal movements. At birth, all joints displayed fixed flexion deformities, no primitive reflexes, poor muscle bulk and care was re-oriented shortly after birth.

Taken together, three unrelated cases including segregation evidence in the published families provides sufficient evidence for the gene-disease association.
Sources: Literature, NHS GMS
Fetal anomalies v1.900 THSD1 Rhiannon Mellis gene: THSD1 was added
gene: THSD1 was added to Fetal anomalies. Sources: Expert Review,Literature
Mode of inheritance for gene: THSD1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: THSD1 were set to PMID: 28749478; 26036949
Phenotypes for gene: THSD1 were set to Intracerebral aneurysms; ?Hydrops fetalis
Review for gene: THSD1 was set to AMBER
Added comment: This gene and phenotype were reviewed during a meeting on 21st October 2021 between representatives of the North Thames and Central & South R21 testing GLHs.

Clinical review and curation was performed by Lyn Chitty, Alison Male, Rowenna Roberts, Rhiannon Mellis (North Thames GLH) and Stephanie Allen, Denise Williams and Esther Kinning (Central & South GLH).

Outcome of review: May be fetally relevant but currently limited evidence, support adding to the Fetal anomalies panel as Amber gene pending more evidence.

Details of review:
Not currently Green on any panels. Amber on Cerebral vascular malformations. (Heterozygous mutations identified in nine families with intracerebral aneurysms plus animal models but unclear on penetrance.)

Shamseldin et al 2018 (PMID: 28749478) report a fetal case with hydrops and a HOMOZYGOUS likely pathogenic variant in THSD1. The same group previously identified this same founder mutation in THSD1 in another 3 families with hydrops/oedema (PMID: 26036949)
Sources: Expert Review, Literature
Fetal anomalies v1.836 SMS Arina Puzriakova Tag for-review was removed from gene: SMS.
Fetal anomalies v1.836 SMS Arina Puzriakova commented on gene: SMS: The rating of this gene has been updated following NHS Genomic Medicine Service approval.
Fetal anomalies v1.835 SMS Arina Puzriakova Source Expert Review Green was added to SMS.
Rating Changed from Amber List (moderate evidence) to Green List (high evidence)
Fetal anomalies v1.595 SMS Arina Puzriakova Phenotypes for gene: SMS were changed from SNYDER-ROBINSON SYNDROME to Mental retardation, X-linked, Snyder-Robinson type, OMIM:309583; Syndromic X-linked intellectual disability Snyder type, MONDO:0010664
Fetal anomalies v1.592 SMS Arina Puzriakova Classified gene: SMS as Amber List (moderate evidence)
Fetal anomalies v1.592 SMS Arina Puzriakova Added comment: Comment on list classification: Following curation and clinical review at GOSH it has been agreed that the associated phenotype is fetally-relevant. Therefore this gene should be promoted to Green at the next GMS panel update (added 'for-review' tag)
Fetal anomalies v1.592 SMS Arina Puzriakova Gene: sms has been classified as Amber List (Moderate Evidence).
Fetal anomalies v1.591 SMS Arina Puzriakova Tag for-review tag was added to gene: SMS.
Fetal anomalies v1.187 SMS Rhiannon Mellis reviewed gene: SMS: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: SNYDER-ROBINSON SYNDROME; Mode of inheritance: X-LINKED: hemizygous mutation in males, biallelic mutations in females
Fetal anomalies v0.9 SMS Rebecca Foulger reviewed gene: SMS: Rating: AMBER; Mode of pathogenicity: ; Publications: ; Phenotypes: ; Mode of inheritance:
Fetal anomalies v0.1 SMS Rebecca Foulger gene: SMS was added
gene: SMS was added to Fetal anomalies. Sources: PAGE DD-Gene2Phenotype,Expert Review Amber
Mode of inheritance for gene: SMS was set to X-LINKED: hemizygous mutation in males, biallelic mutations in females
Phenotypes for gene: SMS were set to SNYDER-ROBINSON SYNDROME