dbSNP rs121908429: SLC12A6:p.Arg207Cys (chr15-34257713-G-A) – ACMG Classification: Pathogenic (11 pts)

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PS3PM5PP3_StrongPP5

The NM_001365088.1(SLC12A6):c.619C>T(p.Arg207Cys) variant causes a missense change. The variant allele was found at a frequency of 0.00000559 in 1,609,900 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 13/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). ClinVar reports functional evidence for this variant: "SCV002540224: The Arg207Cys variant protein when expressed in Xenopus oocytes showed significantly reduced K+ influx compared to wild-type, suggestive of impaired potassium-chloride transport (Salin-Cantegrel et al. 2011" and additional evidence is available in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R207H) has been classified as Pathogenic.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

SLC12A6
NM_001365088.1 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:5U:2

Conservation

PhyloP100: 5.56

Publications

8 publications found

Variant links:

Genes affected

SLC12A6 (HGNC:10914): (solute carrier family 12 member 6) This gene is a member of the K-Cl cotransporter (KCC) family. K-Cl cotransporters are integral membrane proteins that lower intracellular chloride concentrations below the electrochemical equilibrium potential. The proteins encoded by this gene are activated by cell swelling induced by hypotonic conditions. Alternate splicing results in multiple transcript variants encoding different isoforms. Mutations in this gene are associated with agenesis of the corpus callosum with peripheral neuropathy. [provided by RefSeq, Jul 2008]

SLC12A6 Gene-Disease associations (from GenCC):

agenesis of the corpus callosum with peripheral neuropathy
Inheritance: AR, AD Classification: DEFINITIVE, STRONG, SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, G2P, Ambry Genetics, Orphanet
Charcot-Marie-Tooth disease, axonal, IIa 2II
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia

SLC12A6 links:

ENSG00000259468 (HGNC:):

ENSG00000259468 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 11 ACMG points.

PS3

PS3 evidence extracted from ClinVar submissions: SCV002540224: The Arg207Cys variant protein when expressed in Xenopus oocytes showed significantly reduced K+ influx compared to wild-type, suggestive of impaired potassium-chloride transport (Salin-Cantegrel et al. 2011; Park et al. 2020). Further, the Arg207Cys protein was mislocalized to the perinucleus instead of the plasma membrane in HeLa and PC12 cells (Salin-Cantegrel et al. 2011).

PM5

Other missense variant is known to change same aminoacid residue: Variant chr15-34257712-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 521402.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.987

PP5

Variant 15-34257713-G-A is Pathogenic according to our data. Variant chr15-34257713-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 5331.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001365088.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SLC12A6	NM_001365088.1	MANE Select	c.619C>T	p.Arg207Cys	missense	Exon 6 of 26	NP_001352017.1	Q9UHW9-1
SLC12A6	NM_133647.2		c.619C>T	p.Arg207Cys	missense	Exon 5 of 25	NP_598408.1	Q9UHW9-1
SLC12A6	NM_001042496.2		c.592C>T	p.Arg198Cys	missense	Exon 6 of 26	NP_001035961.1	Q9UHW9-4

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SLC12A6	ENST00000354181.8	TSL:1 MANE Select	c.619C>T	p.Arg207Cys	missense	Exon 6 of 26	ENSP00000346112.3	Q9UHW9-1
SLC12A6	ENST00000560611.5	TSL:1	c.619C>T	p.Arg207Cys	missense	Exon 5 of 25	ENSP00000454168.1	Q9UHW9-1
SLC12A6	ENST00000558589.5	TSL:1	c.592C>T	p.Arg198Cys	missense	Exon 6 of 26	ENSP00000452776.1	Q9UHW9-4

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152050

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000796

AC:

AN:

251302

AF XY:

0.00000736

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000549

AC:

AN:

1457850

Hom.:

Cov.:

AF XY:

0.00000551

AC XY:

AN XY:

725558

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33386

American (AMR)

AF:

0.00

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26122

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39672

South Asian (SAS)

AF:

0.00

AC:

AN:

86148

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.00000632

AC:

AN:

1108376

Other (OTH)

AF:

0.00

AC:

AN:

60246

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.456

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152050

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74266

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41390

American (AMR)

AF:

0.00

AC:

AN:

15254

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10580

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68018

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.625

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Agenesis of the corpus callosum with peripheral neuropathy (5)

Charcot-Marie-Tooth disease (1)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.95

BayesDel_addAF

Pathogenic

0.44

BayesDel_noAF

Pathogenic

0.57

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.99

Eigen

Pathogenic

1.0

Eigen_PC

Pathogenic

0.93

FATHMM_MKL

Uncertain

0.96

LIST_S2

Pathogenic

1.0

M_CAP

Pathogenic

0.66

MetaRNN

Pathogenic

0.99

MetaSVM

Pathogenic

1.0

MutationAssessor

Pathogenic

4.2

PhyloP100

5.6

PrimateAI

Pathogenic

0.87

PROVEAN

Pathogenic

-7.3

REVEL

Pathogenic

0.96

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.95

MutPred

0.93

Loss of helix (P = 0.1299)

MVP

0.97

MPC

1.2

ClinPred

1.0

GERP RS

5.5

Varity_R

0.78

gMVP

0.97

Mutation Taster

=2/98

disease causing (ClinVar)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over