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| Prepair 1000+ v1.1611 | TTC21B |
Kate Scarff changed review comment from: Short-rib thoracic dysplasia (SRTD) with or without polydactyly is a skeletal ciliopathy characterized by a constricted thoracic cage, short ribs, shortened tubular bones, and a 'trident' appearance of the acetabular roof. SRTD encompasses Ellis-van Creveld syndrome (EVC) and the disorders previously designated as Jeune syndrome or asphyxiating thoracic dystrophy (ATD), short rib-polydactyly syndrome (SRPS), and Mainzer-Saldino syndrome (MZSDS). Polydactyly is variably present. Nonskeletal involvement can include cleft lip/palate as well as anomalies of the brain, eye, heart, kidneys, liver, pancreas, intestines, and genitalia. Some forms of SRTD are lethal in the neonatal period due to respiratory insufficiency secondary to a severely restricted thoracic cage, whereas others are compatible with life. Homozygous null alleles in Ttc21b are embryonic lethal in mice and it is likely that biallelic truncating null variants are equally incompatible with survival in humans. Nephronophthisis 12: End stage kidney disease seen in multiple unrelated children <10 years. Patients harboring one truncating or splice site mutation in addition to a missense variant exhibit JATD or early onset NPHP with extra-renal features, whereas patients carrying homozygous p.Pro209Leu variants display a primarily kidney phenotype with NPHP and often with glomerular involvement (FSGS). However, liver and skeletal involvement as well as high myopia have also been described in patients with biallelic missense variants, including homozygous p.Pro209Leu carriers.; to: Short-rib thoracic dysplasia (SRTD) with or without polydactyly is a skeletal ciliopathy characterized by a constricted thoracic cage, short ribs, shortened tubular bones, and a 'trident' appearance of the acetabular roof. SRTD encompasses Ellis-van Creveld syndrome (EVC) and the disorders previously designated as Jeune syndrome or asphyxiating thoracic dystrophy (ATD), short rib-polydactyly syndrome (SRPS), and Mainzer-Saldino syndrome (MZSDS). Polydactyly is variably present. Nonskeletal involvement can include cleft lip/palate as well as anomalies of the brain, eye, heart, kidneys, liver, pancreas, intestines, and genitalia. Some forms of SRTD are lethal in the neonatal period due to respiratory insufficiency secondary to a severely restricted thoracic cage, whereas others are compatible with life. Homozygous null alleles in Ttc21b are embryonic lethal in mice and it is likely that biallelic truncating null variants are equally incompatible with survival in humans. Nephronophthisis 12: End stage kidney disease seen in multiple unrelated children <10 years. Patients harboring one truncating or splice site mutation in addition to a missense variant exhibit SRTD or early onset NPHP with extra-renal features, whereas patients carrying homozygous p.Pro209Leu variants display a primarily kidney phenotype with NPHP and often with glomerular involvement (FSGS). However, liver and skeletal involvement as well as high myopia have also been described in patients with biallelic missense variants, including homozygous p.Pro209Leu carriers. |
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| Prepair 1000+ v1.1611 | TTC21B | Kate Scarff edited their review of gene: TTC21B: Changed phenotypes: Short-rib thoracic dysplasia 4 with or without polydactyly, MIM #613819, Nephronophthisis 12, MIM #613820 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Prepair 1000+ v1.1611 | TTC21B |
Kate Scarff changed review comment from: Short-rib thoracic dysplasia (SRTD) with or without polydactyly is a skeletal ciliopathy characterized by a constricted thoracic cage, short ribs, shortened tubular bones, and a 'trident' appearance of the acetabular roof. SRTD encompasses Ellis-van Creveld syndrome (EVC) and the disorders previously designated as Jeune syndrome or asphyxiating thoracic dystrophy (ATD), short rib-polydactyly syndrome (SRPS), and Mainzer-Saldino syndrome (MZSDS). Polydactyly is variably present. Nonskeletal involvement can include cleft lip/palate as well as anomalies of the brain, eye, heart, kidneys, liver, pancreas, intestines, and genitalia. Some forms of SRTD are lethal in the neonatal period due to respiratory insufficiency secondary to a severely restricted thoracic cage, whereas others are compatible with life. Homozygous null alleles in Ttc21b are embryonic lethal in mice and it is likely that biallelic truncating null variants are equally incompatible with survival in humans.; to: Short-rib thoracic dysplasia (SRTD) with or without polydactyly is a skeletal ciliopathy characterized by a constricted thoracic cage, short ribs, shortened tubular bones, and a 'trident' appearance of the acetabular roof. SRTD encompasses Ellis-van Creveld syndrome (EVC) and the disorders previously designated as Jeune syndrome or asphyxiating thoracic dystrophy (ATD), short rib-polydactyly syndrome (SRPS), and Mainzer-Saldino syndrome (MZSDS). Polydactyly is variably present. Nonskeletal involvement can include cleft lip/palate as well as anomalies of the brain, eye, heart, kidneys, liver, pancreas, intestines, and genitalia. Some forms of SRTD are lethal in the neonatal period due to respiratory insufficiency secondary to a severely restricted thoracic cage, whereas others are compatible with life. Homozygous null alleles in Ttc21b are embryonic lethal in mice and it is likely that biallelic truncating null variants are equally incompatible with survival in humans. Nephronophthisis 12: End stage kidney disease seen in multiple unrelated children <10 years. Patients harboring one truncating or splice site mutation in addition to a missense variant exhibit JATD or early onset NPHP with extra-renal features, whereas patients carrying homozygous p.Pro209Leu variants display a primarily kidney phenotype with NPHP and often with glomerular involvement (FSGS). However, liver and skeletal involvement as well as high myopia have also been described in patients with biallelic missense variants, including homozygous p.Pro209Leu carriers. |
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| Prepair 1000+ v1.1277 | TTC21B | Zornitza Stark Marked gene: TTC21B as ready | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Prepair 1000+ v1.1277 | TTC21B | Zornitza Stark Gene: ttc21b has been classified as Green List (High Evidence). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Prepair 1000+ v1.1277 | TTC21B | Zornitza Stark Phenotypes for gene: TTC21B were changed from Short-rib thoracic dysplasia 4 with or without polydactyly, 613819 (3) to Short-rib thoracic dysplasia 4 with or without polydactyly, MIM #613819 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Prepair 1000+ v1.1276 | TTC21B | Zornitza Stark Publications for gene: TTC21B were set to | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Prepair 1000+ v1.1257 | TTC21B | Kate Scarff reviewed gene: TTC21B: Rating: GREEN; Mode of pathogenicity: None; Publications: PMID: 21258341, 25492405, 33875766; Phenotypes: Short-rib thoracic dysplasia 4 with or without polydactyly, MIM #613819; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Prepair 1000+ v0.0 | TTC21B |
Zornitza Stark gene: TTC21B was added gene: TTC21B was added to Reproductive Carrier Screen_VCGS. Sources: Mackenzie's Mission,Expert Review Green Mode of inheritance for gene: TTC21B was set to BIALLELIC, autosomal or pseudoautosomal Phenotypes for gene: TTC21B were set to Short-rib thoracic dysplasia 4 with or without polydactyly, 613819 (3) |
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