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Fetal anomalies

Gene: KCNK3

Green List (high evidence)
KCNK3 (potassium two pore domain channel subfamily K member 3)
EnsemblGeneIds (GRCh38): ENSG00000171303
EnsemblGeneIds (GRCh37): ENSG00000171303
OMIM: 603220, Gene2Phenotype
KCNK3 is in 6 panels

2 reviews

Achchuthan Shanmugasundram (Genomics England Curator)

Green List (high evidence)

The rating of this gene has been updated to green and the mode of inheritance set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted following NHS Genomic Medicine Service approval.
Created: 25 Feb 2025, 11:15 a.m. | Last Modified: 25 Feb 2025, 11:15 a.m.
Panel Version: 5.78
This gene and phenotype were reviewed during meetings between November 2024 & January 2025. The meetings included representatives of the Central & South and North Thames R21 testing GLHs and from the R21 Clinical Oversight Group. Clinical review and curation was performed by Stephanie Allen, Natalie Bibb, and Sarah Graham (Central & South GLH), Natalie Chandler and Elizabeth Scotchman (North Thames GLH), and Sunayna Best, Anna De Burca, Natalie Canham, Samantha Doyle, Alice Gardham, Victoria Harrison, Esther Kinning, Sahar Mansour, Soo-Mi Park, and Elizabeth Wall (R21 Clinical Oversight Group).
Created: 20 Feb 2025, 9:40 p.m. | Last Modified: 20 Feb 2025, 9:40 p.m.
Panel Version: 5.16

Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted

Created: 20 Feb 2025, 9:40 p.m.
Last Modified: 20 Feb 2025, 9:40 p.m.
Panel version: 5.78

Natalie Chandler (North Thames GLH)

Green List (high evidence)

Gain of function variant only so far all variants cluster near the X-gate. Loss of function cause pulmonary arterial hypertension (so may get indicental findings) Green on arthrogryposis panel & 3 others. Went green in 2023. PMID 36195757 Srmann et al 2022 report 9 unrelated individuals with de novo heterozygous KCNK3 missense variants (21 weeks to 25 years old). All 8 living probands (3-25 years) had hypotonia, global developmental delay, central and/or obstructive sleep apnoea and feeding difficulties. 7/9 probands had additional anomalies including microcephaly (at least 3/9), arthrogryposis/flexion contractures/foot deformities (7/9), scoliosis, cleft palate (2/9), and ambiguous genitalia/undescended testes (5/6) and dysmorphism. IUGR reported in 3/9 probands and polyhdramnios in 2/9.
Created: 20 Feb 2025, 9:35 p.m. | Last Modified: 20 Feb 2025, 9:35 p.m.
Panel Version: 5.15

Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted

Phenotypes
Neurodevelopmental disorder, MONDO:0700092, KCNK3-related

Publications

Mode of pathogenicity
Loss-of-function variants (as defined in pop up message) DO NOT cause this phenotype - please provide details in the comments

Created: 20 Feb 2025, 9:35 p.m.
Last Modified: 20 Feb 2025, 9:35 p.m.
Panel version: 5.15

Details

Mode of Inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Sources
  • Expert Review Green
  • NHS GMS
Phenotypes
  • Neurodevelopmental disorder, MONDO:0700092, KCNK3-related
OMIM
603220
Clinvar variants
Variants in KCNK3
Penetrance
None
Publications
Mode of Pathogenicity
Loss-of-function variants (as defined in pop up message) DO NOT cause this phenotype - please provide details in the comments
Panels with this gene

History Filter Activity

25 Feb 2025, Gel status: 3

Removed Tag, Removed Tag

Achchuthan Shanmugasundram (Genomics England Curator)

Tag Q1_25_ NHS_review was removed from gene: KCNK3. Tag Q1_25_ promote_green was removed from gene: KCNK3.

25 Feb 2025, Gel status: 3

Added New Source, Status Update

Achchuthan Shanmugasundram (Genomics England Curator)

Source Expert Review Green was added to KCNK3. Rating Changed from Amber List (moderate evidence) to Green List (high evidence)

21 Feb 2025, Gel status: 2

Added Tag, Added Tag

Achchuthan Shanmugasundram (Genomics England Curator)

Tag Q1_25_ NHS_review tag was added to gene: KCNK3. Tag Q1_25_ promote_green tag was added to gene: KCNK3.

20 Feb 2025, Gel status: 2

Created, Added New Source, Set mode of inheritance, Set publications, Set Phenotypes, Set mode of pathogenicity

Achchuthan Shanmugasundram (Genomics England Curator)

gene: KCNK3 was added gene: KCNK3 was added to Fetal anomalies. Sources: NHS GMS,Expert Review Amber Mode of inheritance for gene: KCNK3 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted Publications for gene: KCNK3 were set to 36195757 Phenotypes for gene: KCNK3 were set to Neurodevelopmental disorder, MONDO:0700092, KCNK3-related Mode of pathogenicity for gene: KCNK3 was set to Loss-of-function variants (as defined in pop up message) DO NOT cause this phenotype - please provide details in the comments