| Date | Panel | Item | Activity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ataxia and cerebellar anomalies - narrow panel v3.30 | POLR3B | Eleanor Williams Tag Q2_21_rating was removed from gene: POLR3B. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ataxia and cerebellar anomalies - narrow panel v3.30 | POLR3B | Eleanor Williams reviewed gene: POLR3B: Rating: GREEN; Mode of pathogenicity: ; Publications: ; Phenotypes: ; Mode of inheritance: | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ataxia and cerebellar anomalies - narrow panel v3.29 | POLR3B |
Eleanor Williams Source Expert Review Green was added to POLR3B. Source NHS GMS was added to POLR3B. Rating Changed from Amber List (moderate evidence) to Green List (high evidence) |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ataxia and cerebellar anomalies - narrow panel v2.198 | POLR3B | Arina Puzriakova Phenotypes for gene: POLR3B were changed from Leukodystrophy, hypomyelinating, 8, with or without oligodontia and/or hypogonadotropic hypogonadism, OMIM:614381 to Leukodystrophy, hypomyelinating, 8, with or without oligodontia and/or hypogonadotropic hypogonadism, OMIM:614381; POLR3B-related neurodevelopmental disorder; Ataxia, spasticity, and demyelinating neuropathy | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ataxia and cerebellar anomalies - narrow panel v2.197 | POLR3B |
Arina Puzriakova changed review comment from: Comment on list classification: New gene added by Zornitza Stark (Australian Genomics). Progressive childhood-onset cerebellar ataxia is a feature in a subset of cases with biallelic variants in this gene. There are sufficient unrelated families in literature to warrant a Green rating on this panel (>10 individuals reported with ataxia) Recently, heterozygous variants were also linked to ataxia, with different de novo POLR3B variants identified in 6 unrelated individuals presenting (PMID:33417887). All had had a variable degree of gait dysfunction - 5/6 had truncal and/or appendicular ataxia with wide-based ataxic gait, inability to perform tandem gait, or gait instability. Protein modelling and proteomic analysis shows variants caused aberrant association of individual enzyme subunits rather than affecting overall enzyme assembly or stability. Comment on mode of inheritance: Both biallelic and monoallelic variants have been linked to ataxia - enough evidence for a Green rating for both allelic requirements; to: Comment on list classification: New gene added by Zornitza Stark (Australian Genomics). Progressive childhood-onset cerebellar ataxia is a feature in a subset of cases with biallelic variants in this gene. There are sufficient unrelated families in literature to warrant a Green rating on this panel (>10 individuals reported with ataxia) Recently, heterozygous variants were also linked to ataxia, with different de novo POLR3B variants identified in 6 unrelated individuals (PMID:33417887). All had had a variable degree of gait dysfunction - 5/6 had truncal and/or appendicular ataxia with wide-based ataxic gait, inability to perform tandem gait, or gait instability. Protein modelling and proteomic analysis shows variants caused aberrant association of individual enzyme subunits rather than affecting overall enzyme assembly or stability. Comment on mode of inheritance: Both biallelic and monoallelic variants have been linked to ataxia - enough evidence for a Green rating for both allelic requirements |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ataxia and cerebellar anomalies - narrow panel v2.197 | POLR3B | Arina Puzriakova edited their review of gene: POLR3B: Changed rating: GREEN; Changed publications to: 22036171, 18851904, 22036172, 24190003, 25339210, 26204956, 27159321, 32319736, 33417887; Changed mode of inheritance: BIALLELIC, autosomal or pseudoautosomal | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ataxia and cerebellar anomalies - narrow panel v2.197 | POLR3B | Arina Puzriakova Tag Q2_21_rating tag was added to gene: POLR3B. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ataxia and cerebellar anomalies - narrow panel v2.197 | POLR3B | Arina Puzriakova Publications for gene: POLR3B were set to 22036171; 22036172 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ataxia and cerebellar anomalies - narrow panel v2.196 | POLR3B | Arina Puzriakova Mode of inheritance for gene: POLR3B was changed from BIALLELIC, autosomal or pseudoautosomal to BOTH monoallelic and biallelic, autosomal or pseudoautosomal | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ataxia and cerebellar anomalies - narrow panel v2.195 | POLR3B | Arina Puzriakova Classified gene: POLR3B as Amber List (moderate evidence) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ataxia and cerebellar anomalies - narrow panel v2.195 | POLR3B |
Arina Puzriakova Added comment: Comment on list classification: New gene added by Zornitza Stark (Australian Genomics). Progressive childhood-onset cerebellar ataxia is a feature in a subset of cases with biallelic variants in this gene. There are sufficient unrelated families in literature to warrant a Green rating on this panel (>10 individuals reported with ataxia) Recently, heterozygous variants were also linked to ataxia, with different de novo POLR3B variants identified in 6 unrelated individuals presenting (PMID:33417887). All had had a variable degree of gait dysfunction - 5/6 had truncal and/or appendicular ataxia with wide-based ataxic gait, inability to perform tandem gait, or gait instability. Protein modelling and proteomic analysis shows variants caused aberrant association of individual enzyme subunits rather than affecting overall enzyme assembly or stability. Comment on mode of inheritance: Both biallelic and monoallelic variants have been linked to ataxia - enough evidence for a Green rating for both allelic requirements |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ataxia and cerebellar anomalies - narrow panel v2.195 | POLR3B | Arina Puzriakova Gene: polr3b has been classified as Amber List (Moderate Evidence). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ataxia and cerebellar anomalies - narrow panel v2.194 | POLR3B | Arina Puzriakova Phenotypes for gene: POLR3B were changed from Leukodystrophy, hypomyelinating, 8, with or without oligodontia and/or hypogonadotropic hypogonadism, MIM# 614381 to Leukodystrophy, hypomyelinating, 8, with or without oligodontia and/or hypogonadotropic hypogonadism, OMIM:614381 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ataxia and cerebellar anomalies - narrow panel v2.12 | POLR3B |
Zornitza Stark gene: POLR3B was added gene: POLR3B was added to Ataxia and cerebellar anomalies - narrow panel. Sources: Expert list Mode of inheritance for gene: POLR3B was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: POLR3B were set to 22036171; 22036172 Phenotypes for gene: POLR3B were set to Leukodystrophy, hypomyelinating, 8, with or without oligodontia and/or hypogonadotropic hypogonadism, MIM# 614381 Review for gene: POLR3B was set to GREEN gene: POLR3B was marked as current diagnostic Added comment: Ataxia is a presenting feature. Sources: Expert list |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||