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Fetal anomalies v6.12 MYH3 Arina Puzriakova Phenotypes for gene: MYH3 were changed from DISTAL ARTHROGRYPOSIS TYPE 2B; DISTAL ARTHROGRYPOSIS TYPE 2A to Arthrogryposis, distal, type 2A (Freeman-Sheldon), OMIM:193700 (AD); Arthrogryposis, distal, type 2B3 (Sheldon-Hall), OMIM:618436 (AD); Contractures, pterygia, and spondylocarpostarsal fusion syndrome 1A, OMIM:178110 (AD); Contractures, pterygia, and spondylocarpotarsal fusion syndrome 1B, OMIM:618469 (AR)
Fetal anomalies v6.11 MYH3 Arina Puzriakova Publications for gene: MYH3 were set to
Fetal anomalies v6.10 MYH3 Arina Puzriakova Added comment: Comment on mode of inheritance: MOI should be changed from 'MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown' to 'BOTH monoallelic and biallelic, autosomal or pseudoautosomal' at the next GMS panel update.

Monoallelic variants are associated with distal arthrogryposis conditions including Freeman-Sheldon syndrome and Sheldon-Hall syndrome.

Monoallelic and biallelic variants also underlie Contractures, Pterygia, and Spondylocarpotarsal Fusion syndromes (CPSFS) which are characterised by extensive bony abnormalities in addition to congenital contractures. These features could be detected prenatally and therefore are relevant to this panel.

At least 3 unrelated recessive CPSFS cases have been reported with multiple contractures (PMID: 29805041). Additionally, two sibs from one family have been reported with distal arthrogryposis without additional features of CPSFS, who harboured two homozygous ultra-rare MYH3 variants (PMID: 38856159). Their presentation was assessed in a prenatal diagnostic setting. Overall this evidence supports an MOI of 'both mono- and biallelic' on this panel.
Fetal anomalies v6.10 MYH3 Arina Puzriakova Mode of inheritance for gene: MYH3 was changed from MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Fetal anomalies v6.9 MYH3 Arina Puzriakova Tag Q3_25_MOI tag was added to gene: MYH3.
Fetal anomalies v0.273 PIK3CA Rebecca Foulger edited their review of gene: PIK3CA: Added comment: Additional support for inclusion of gene on panel comes from Yates et al., 2017 (PMID:28425981, Whole-exome sequencing on deceased fetuses with ultrasound anomalies: expanding our knowledge of genetic disease during fetal development). Yates et al., identified a de novo heterozygous variant in PIK3CA in a case where the main ultrasound finding was Brain malformations (Table 1). An inherited MYH3 variant was also detected in this case but was reclassified as likely benign based on allele frequency data.; Changed rating: AMBER; Changed phenotypes: Brain malformations
Fetal anomalies v0.185 MYH3 Rebecca Foulger edited their review of gene: MYH3: Added comment: Additional evidence from PMID:30266093: AD/inherited het (mosaic mother) variant identified in MYH3 from fetal exome sequencing in Normand et al., 2018 (Clinical exome sequencing for fetuses with ultrasound abnormalities and a suspected Mendelian disorder, PMID:30266093).; Changed publications: 30266093
Fetal anomalies v0.134 MYH3 Rebecca Foulger edited their review of gene: MYH3: Added comment: This gene and phenotype were reviewed during meetings at Great Ormond Street hospital in March 2019. Clinical review and curation was performed by Lyn Chitty, Anna de Burca, Rhiannon Mellis, Richard Scott, Ellen McDonagh and Rebecca Foulger. Outcome of review: Confirmed that phenotype is fetally-relevant: keep on the Fetal anomalies panel as a Green gene.; Changed rating: GREEN
Fetal anomalies v0.9 MYH3 Rebecca Foulger commented on gene: MYH3: DDG2P rating in original PAGE list: Confirmed for DISTAL ARTHROGRYPOSIS TYPE 2B and Confirmed for DISTAL ARTHROGRYPOSIS TYPE 2A.
Fetal anomalies v0.3 MYH3 Rebecca Foulger reviewed gene: MYH3: Rating: AMBER; Mode of pathogenicity: Other - please provide details in the comments; Publications: ; Phenotypes: ; Mode of inheritance:
Fetal anomalies v0.1 MYH3 Rebecca Foulger Added phenotypes DISTAL ARTHROGRYPOSIS TYPE 2A for gene: MYH3
Fetal anomalies v0.1 MYH3 Rebecca Foulger gene: MYH3 was added
gene: MYH3 was added to Fetal anomalies. Sources: Expert Review Green,PAGE DD-Gene2Phenotype
Mode of inheritance for gene: MYH3 was set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Phenotypes for gene: MYH3 were set to DISTAL ARTHROGRYPOSIS TYPE 2B