Fetal anomalies
Gene: CACNA1S

CACNA1S (calcium voltage-gated channel subunit alpha1 S)
EnsemblGeneIds (GRCh38): ENSG00000081248
EnsemblGeneIds (GRCh37): ENSG00000081248
OMIM: 114208, Gene2Phenotype
CACNA1S is in 9 panels

4 reviews

Achchuthan Shanmugasundram (Genomics England Curator)

Green List (high evidence)

The rating of this gene has been updated to green 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
BIALLELIC, autosomal or pseudoautosomal

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

Anna de Burca (Oxford University Hospitals NHS Foundation Trust)

Green List (high evidence)

1 case fetal akinesia deformation sequence; 1 family congenital myopathy with talipes; 11 indivs from 7 families with congenital myopathy - former probably represents more severe end of congenital myopathy spectrum.
Created: 20 Feb 2025, 9:35 p.m. | Last Modified: 20 Feb 2025, 9:35 p.m.

Panel Version: 5.15

Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal

Phenotypes
Congenital myopathy 18 due to dihydropyridine receptor defect, MIM#620246

Publications

38111203

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

Arina Puzriakova (Genomics England Curator)

Comment on list classification: New gene added to this panel by Rhiannon Mellis (GOSH). Rating Amber inline with this review, awaiting further evidence supporting that this gene can cause a fetal phenotype.
Created: 19 Aug 2022, 1:31 p.m. | Last Modified: 19 Aug 2022, 1:31 p.m.

Panel Version: 1.921

Created: 19 Aug 2022, 1:31 p.m.
Last Modified: 19 Aug 2022, 1:31 p.m.
Panel version: 1.921

Rhiannon Mellis (Great Ormond Street Hospital)

I don't know

This gene and phenotype were reviewed during a meeting on 21st October 2021 between representatives of the North Thames and Central & South R21 testing GLHs.

Clinical review and curation was performed by Lyn Chitty, Alison Male, Rowenna Roberts, Rhiannon Mellis (North Thames GLH) and Stephanie Allen, Denise Williams and Esther Kinning (Central & South GLH).

Outcome of review: May be fetally relevant but currently limited evidence, support adding to the Fetal anomalies panel as Amber gene.

Details of review:
Previously only monoallelic variants reported associated with malignant hyperthermia and periodic paralysis but more recently biallelic variants have been associated with congenital myopathy. In Ravenscroft et al 2020 (PMID: 33060286) the reported biallelic variants were VUS but strong suspicion of causality: the proband had polyhydramnios, scalp oedema, bilateral wrist contractures, bilateral talipes and reduced fetal movements, ToP at 26/40. Mild facial dysmorphic features were noted on autopsy, including low anterior hairline, mild hypertelorism and moderate retrognathia. A previous pregnancy was affected with polyhydramnios and reduced fetal movements, delivered at 32/40 due to placental abruption and died at 10 days. On photos the baby had ptosis and broad nasal tip. The biallelic variants segregated within the family (parents and the 2 unaffected sibs all het). No cell lines available for functional studies.
Another study (PMID: 28012042) reports 7 families with congenital myopathy and CACNA1S mutations (both recessive and dominant), of whom 3 had cases with antenatal onset (reduced fetal movements).
Sources: Expert Review, Literature
Created: 11 Aug 2022, 12:20 p.m.

Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal

Phenotypes
Congenital myopathy; arthrogryposis

Publications

PMID: 33060286
28012042

Created: 11 Aug 2022, 12:20 p.m.

Panel version: 1.900

Details

Mode of Inheritance

BIALLELIC, autosomal or pseudoautosomal

Sources

Expert Review Green
NHS GMS

Phenotypes

Congenital myopathy 18 due to dihydropyridine receptor defect, OMIM:620246

OMIM

114208

Clinvar variants

Variants in CACNA1S

Penetrance

None

Publications

Panels with this gene