rs1553247295

Positions:

• chr1-201039964-G-C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_000069.3(CACNA1S):​c.5489C>G​(p.Thr1830Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 34)
• Consequence: CACNA1S NM_000069.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.486

Genes affected

CACNA1S (HGNC:1397): (calcium voltage-gated channel subunit alpha1 S) This gene encodes one of the five subunits of the slowly inactivating L-type voltage-dependent calcium channel in skeletal muscle cells. Mutations in this gene have been associated with hypokalemic periodic paralysis, thyrotoxic periodic paralysis and malignant hyperthermia susceptibility. [provided by RefSeq, Jul 2008]

ENSG00000234132 (HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.054252505).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CACNA1S	NM_000069.3	c.5489C>G	p.Thr1830Arg	missense_variant	44/44	ENST00000362061.4	NP_000060.2
CACNA1S	XM_005245478.4	c.5432C>G	p.Thr1811Arg	missense_variant	43/43		XP_005245535.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CACNA1S	ENST00000362061.4	c.5489C>G	p.Thr1830Arg	missense_variant	44/44	1	NM_000069.3	ENSP00000355192.3

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 34

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Malignant hyperthermia of anesthesia Uncertain:1

Uncertain significance, criteria provided, single submitter

research

CSER _CC_NCGL, University of Washington

Oct 01, 2016

Found in patient having exome sequencing for an unrelated indication. No known history of malignant hyperthermia. This interpretation considers GERP score and allele frequency data, in addition to published reports of the variant in the literature, available at the time of review. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.085
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.51
CADD	Benign	17
DANN	Benign	0.97
DEOGEN2	Benign	0.023	T;T
Eigen	Benign	-0.59
Eigen_PC	Benign	-0.57
FATHMM_MKL	Benign	0.27	N
LIST_S2	Benign	0.79	T;T
M_CAP	Benign	0.044	D
MetaRNN	Benign	0.054	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.6	.;L
PrimateAI	Benign	0.34	T
PROVEAN	Benign	-1.6	N;N
REVEL	Benign	0.046
Sift	Benign	0.15	T;T
Sift4G	Benign	0.54	T;T
Polyphen		0.090	.;B
Vest4		0.11
MutPred		0.18		.;Loss of glycosylation at T1830 (P = 0.079);
MVP		0.67
MPC		0.19
ClinPred		0.069	T
GERP RS		2.5
Varity_R		0.13
gMVP		0.48

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs1553247295; hg19: chr1-201009092;