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Intellectual disability - microarray and sequencing v5.450 ABCC9 Sarah Leigh Mode of pathogenicity for gene: ABCC9 was changed from None to None
Intellectual disability - microarray and sequencing v5.450 ABCC9 Sarah Leigh Mode of pathogenicity for gene: ABCC9 was changed from Other to None
Intellectual disability - microarray and sequencing v5.449 ABCC9 Tracy Lester edited their review of gene: ABCC9: Added comment: This gene is currently green for monoallelic inheritance but the associated review relates to cases with biallelic inheritance. The MOI for this gene should be amended to biallelic only. Monoallelic variants are associated with Cantu syndrome which is not primarily an ID disorder or DCM.; Changed rating: GREEN
Intellectual disability - microarray and sequencing v5.448 ABCC9 Sarah Leigh Added comment: Comment on mode of pathogenicity: Loss of function variants do cause the phenotype of Intellectual disability and myopathy syndrome (OMIM:619719) , which is relevant to this panel.
Intellectual disability - microarray and sequencing v5.448 ABCC9 Sarah Leigh Mode of pathogenicity for gene: ABCC9 was changed from to Other
Intellectual disability - microarray and sequencing v5.446 ABCC9 Sarah Leigh Tag watchlist_moi was removed from gene: ABCC9.
Tag Q1_24_MOI tag was added to gene: ABCC9.
Tag Q1_24_NHS_review tag was added to gene: ABCC9.
Intellectual disability - microarray and sequencing v5.446 ABCC9 Sarah Leigh Phenotypes for gene: ABCC9 were changed from Cardiomyopathy, dilated, 10, 608569; Atrial fibrillation, familial, 12, 614050; Hypertrichotic osteochondrodysplasia, 239850; CANTU SYNDROME HYPERTRICHOTIC OSTEOCHONDRODYSPLASIA to Intellectual disability and myopathy syndrome, OMIM:619719; intellectual disability and myopathy syndrome, MONDO:0859224
Intellectual disability - microarray and sequencing v5.445 ABCC9 Sarah Leigh changed review comment from: Seven homozygous loss of function ABCC9 variants have been reported in seven unrelated cases of Intellectual disability and myopathy syndrome (OMIM:619719)(PMID: 31575858; 38217872). In vivo studies of abcc9 LoF in zebrafish, revealed an exacerbated motor response to pentylenetetrazole, a pro-convulsive drug, consistent with impaired neurodevelopment associated with an increased seizure susceptibility.(PMID: 38217872).; to: Seven homozygous loss of function ABCC9 variants have been reported in seven unrelated cases of Intellectual disability and myopathy syndrome (OMIM:619719)(PMID: 31575858; 38217872). In vivo studies of abcc9 LoF in zebrafish, revealed an exacerbated motor response to pentylenetetrazole, a pro-convulsive drug, consistent with impaired neurodevelopment associated with an increased seizure susceptibility.(PMID: 38217872). Heterozygous parents of the cases, did not show a consistent phenotype, although intrauterine death was reported in two families (PMID: 38217872). In family 4 the fetus was homozygous for c.1858C>T, p.(Arg620Ter) and in family 8 the parents were both heterozygous for c.2140_2141del, p.(Leu714SerfsTer7), but analysis of the fetus was not possible.
Intellectual disability - microarray and sequencing v5.445 ABCC9 Sarah Leigh reviewed gene: ABCC9: Rating: GREEN; Mode of pathogenicity: None; Publications: 38217872; Phenotypes: Intellectual disability and myopathy syndrome, OMIM:619719, intellectual disability and myopathy syndrome, MONDO:0859224; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Intellectual disability - microarray and sequencing v5.445 ABCC9 Sarah Leigh Publications for gene: ABCC9 were set to 25529582; 24896178; 31575858; 38217872
Intellectual disability - microarray and sequencing v5.444 ABCC9 Sarah Leigh Publications for gene: ABCC9 were set to 25529582; 24896178; 31575858
Intellectual disability - microarray and sequencing v5.443 ABCC9 Sarah Leigh Publications for gene: ABCC9 were set to
Intellectual disability - microarray and sequencing v5.409 ABCC9 Tracy Lester reviewed gene: ABCC9: Rating: AMBER; Mode of pathogenicity: None; Publications: ; Phenotypes: ; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal; Current diagnostic: yes
Intellectual disability - microarray and sequencing v3.1568 ABCC9 Arina Puzriakova Tag watchlist_moi tag was added to gene: ABCC9.
Intellectual disability - microarray and sequencing v3.740 ABCC9 Arina Puzriakova changed review comment from: Comment on list classification: Intellectual impairment as been reported in individuals with loss-of-function variants and a percentage of those with gain-of-function variants. However, this is less prominent than other features of the disease presentation (e.g. cardiac, skeletal defects) and often ID is perhaps too mild.

Therefore, ABCC9 will be flagged for review by the GMS team with regards to phenotypic fit for this panel and determine whether it should be demoted from Green to Amber (added for-review tag).; to: Comment on list classification: Intellectual impairment has been reported in individuals with loss-of-function variants and a percentage of those with gain-of-function variants. ID is typically mild, however it is plausible that patients may still be tested for this panel, particularly if recruited under Coffin-Siris-like coarse facial features which can be associated with this gene. Therefore, maintaining Green gene rating.

Comment on mode of inheritance: Leaving MOI as Monoallelic as only 2 families with the same biallelic variant (possible founder variant) reported to date (PMID:31575858), and patients with biallelic variants would still be picked up by the Genomics England pipeline.
Intellectual disability - microarray and sequencing v3.740 ABCC9 Arina Puzriakova Tag for-review was removed from gene: ABCC9.
Intellectual disability - microarray and sequencing v3.718 ABCC9 Arina Puzriakova Classified gene: ABCC9 as Green List (high evidence)
Intellectual disability - microarray and sequencing v3.718 ABCC9 Arina Puzriakova Added comment: Comment on list classification: Intellectual impairment as been reported in individuals with loss-of-function variants and a percentage of those with gain-of-function variants. However, this is less prominent than other features of the disease presentation (e.g. cardiac, skeletal defects) and often ID is perhaps too mild.

Therefore, ABCC9 will be flagged for review by the GMS team with regards to phenotypic fit for this panel and determine whether it should be demoted from Green to Amber (added for-review tag).
Intellectual disability - microarray and sequencing v3.718 ABCC9 Arina Puzriakova Gene: abcc9 has been classified as Green List (High Evidence).
Intellectual disability - microarray and sequencing v3.717 ABCC9 Arina Puzriakova Tag for-review tag was added to gene: ABCC9.
Intellectual disability - microarray and sequencing v3.717 ABCC9 Arina Puzriakova reviewed gene: ABCC9: Rating: ; Mode of pathogenicity: None; Publications: 31575858; Phenotypes: mild ID, similar facies, myopathy, cerebral white matter hyperintensities, cardiac systolic dysfunction; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Intellectual disability - microarray and sequencing v2.468 ABCC9 Louise Daugherty Source Victorian Clinical Genetics Services was added to ABCC9.
Intellectual disability - microarray and sequencing ABCC9 BRIDGE consortium edited their review of ABCC9
Intellectual disability - microarray and sequencing ABCC9 BRIDGE consortium edited their review of ABCC9
Intellectual disability - microarray and sequencing ABCC9 BRIDGE consortium reviewed ABCC9
Intellectual disability - microarray and sequencing ABCC9 Ellen McDonagh commented on ABCC9
Intellectual disability - microarray and sequencing ABCC9 Alice Gardham marked ABCC9 as ready
Intellectual disability - microarray and sequencing ABCC9 Alice Gardham classified ABCC9 as green
Intellectual disability - microarray and sequencing ABCC9 Alice Gardham classified ABCC9 as green
Intellectual disability - microarray and sequencing ABCC9 Alice Gardham commented on ABCC9