rs775678070

Positions:

• chr20-46041423-C-A
• chr20-46041423-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP2

The NM_020708.5(SLC12A5):​c.949C>A​(p.Leu317Ile) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SLC12A5 NM_020708.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.10

Genes affected

SLC12A5 (HGNC:13818): (solute carrier family 12 member 5) K-Cl cotransporters are proteins that lower intracellular chloride concentrations below the electrochemical equilibrium potential. The protein encoded by this gene is an integral membrane K-Cl cotransporter that can function in either a net efflux or influx pathway, depending on the chemical concentration gradients of potassium and chloride. The encoded protein can act as a homomultimer, or as a heteromultimer with other K-Cl cotransporters, to maintain chloride homeostasis in neurons. Alternative splicing results in two transcript variants encoding different isoforms. [provided by RefSeq, Sep 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), SLC12A5. . Gene score misZ 4.7022 (greater than the threshold 3.09). Trascript score misZ 6.2616 (greater than threshold 3.09). GenCC has associacion of gene with developmental and epileptic encephalopathy, 34, malignant migrating partial seizures of infancy, developmental and epileptic encephalopathy, epilepsy, idiopathic generalized, susceptibility to, 14.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SLC12A5	NM_020708.5	c.949C>A	p.Leu317Ile	missense_variant	8/26	ENST00000243964.7	NP_065759.1
SLC12A5	NM_001134771.2	c.1018C>A	p.Leu340Ile	missense_variant	8/26		NP_001128243.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC12A5	ENST00000243964.7	c.949C>A	p.Leu317Ile	missense_variant	8/26	1	NM_020708.5	ENSP00000243964	A1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000398 AC: 1 AN: 251470 Hom.: 0 AF XY: 0.00000736 AC XY: 1 AN XY: 135914

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.0000462

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.33
BayesDel_addAF	Benign	-0.034	T
BayesDel_noAF	Benign	-0.29
CADD	Uncertain	23
DANN	Uncertain	0.99
DEOGEN2	Benign	0.17	T;.;.
Eigen	Uncertain	0.35
Eigen_PC	Uncertain	0.33
FATHMM_MKL	Benign	0.23	N
LIST_S2	Uncertain	0.95	D;D;D
M_CAP	Benign	0.021	T
MetaRNN	Uncertain	0.50	D;D;D
MetaSVM	Benign	-0.49	T
MutationAssessor	Uncertain	2.5	M;.;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.71	T
PROVEAN	Benign	-1.5	N;.;N
REVEL	Benign	0.27
Sift	Benign	0.13	T;.;T
Sift4G	Benign	0.11	T;D;T
Polyphen		0.97	D;.;P
Vest4		0.46
MutPred		0.67		Gain of MoRF binding (P = 0.332);.;.;
MVP		0.39
MPC		2.1
ClinPred		0.91	D
GERP RS		4.8
Varity_R		0.35
gMVP		0.85

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: rs775678070; hg19: chr20-44670062;