rs146177203

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP6BS1BS2

The NM_001038.6(SCNN1A):c.997C>T(p.Arg333Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0001 in 1,613,924 control chromosomes in the GnomAD database, including 3 homozygotes. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. R333R) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000098 ( 3 hom. )

Consequence

SCNN1A
NM_001038.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 7.35

Publications

4 publications found

Variant links:

Genes affected

SCNN1A (HGNC:10599): (sodium channel epithelial 1 subunit alpha) Nonvoltage-gated, amiloride-sensitive, sodium channels control fluid and electrolyte transport across epithelia in many organs. These channels are heteromeric complexes consisting of 3 subunits: alpha, beta, and gamma. This gene encodes the alpha subunit, and mutations in this gene have been associated with pseudohypoaldosteronism type 1 (PHA1), a rare salt wasting disease resulting from target organ unresponsiveness to mineralocorticoids. Alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Apr 2009]

SCNN1A Gene-Disease associations (from GenCC):

pseudohypoaldosteronism, type IB1, autosomal recessive
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Laboratory for Molecular Medicine, Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae)
bronchiectasis with or without elevated sweat chloride 2
Inheritance: Unknown, AD Classification: STRONG, MODERATE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, Ambry Genetics
Brugada syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Liddle syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Liddle syndrome 3
Inheritance: Unknown, AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics

SCNN1A links:

LOC107984500 (HGNC:):

LOC107984500 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP6

Variant 12-6355418-G-A is Benign according to our data. Variant chr12-6355418-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 229237.

BS1

Variant frequency is greater than expected in population sas. GnomAdExome4 allele frequency = 0.0000978 (143/1461558) while in subpopulation SAS AF = 0.000603 (52/86194). AF 95% confidence interval is 0.000472. There are 3 homozygotes in GnomAdExome4. There are 76 alleles in the male GnomAdExome4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 3 AR,Unknown,AD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein
SCNN1A	NM_001038.6 link	c.997C>T	p.Arg333Cys	missense_variant	Exon 6 of 13	ENST00000228916.7	NP_001029.1
SCNN1A	NM_001159576.2 link	c.1174C>T	p.Arg392Cys	missense_variant	Exon 5 of 12		NP_001153048.1
SCNN1A	NM_001159575.2 link	c.1066C>T	p.Arg356Cys	missense_variant	Exon 6 of 13		NP_001153047.1
LOC107984500	XR_007063191.1 link	n.297-107G>A		intron_variant	Intron 3 of 3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SCNN1A	ENST00000228916.7 link	c.997C>T	p.Arg333Cys	missense_variant	Exon 6 of 13	1	NM_001038.6	ENSP00000228916.2

Frequencies

GnomAD3 genomes

AF:

0.000125

AC:

AN:

152248

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000193

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000827

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000160

AC:

AN:

249516

AF XY:

0.000178

show subpopulations

Gnomad AFR exome

AF:

0.000124

Gnomad AMR exome

AF:

0.0000580

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000356

Gnomad OTH exome

AF:

0.000327

GnomAD4 exome

AF:

0.0000978

AC:

143

AN:

1461558

Hom.:

Cov.:

AF XY:

0.000105

AC XY:

AN XY:

727034

show subpopulations

African (AFR)

AF:

0.000209

AC:

AN:

33476

American (AMR)

AF:

0.0000447

AC:

AN:

44696

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26122

East Asian (EAS)

AF:

0.0000756

AC:

AN:

39696

South Asian (SAS)

AF:

0.000603

AC:

AN:

86194

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53304

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000594

AC:

AN:

1111922

Other (OTH)

AF:

0.000182

AC:

AN:

60380

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.471

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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:

0.000125

AC:

AN:

152366

Hom.:

Cov.:

AF XY:

0.000174

AC XY:

AN XY:

74510

show subpopulations

African (AFR)

AF:

0.000192

AC:

AN:

41582

American (AMR)

AF:

0.00

AC:

AN:

15314

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.000828

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000103

AC:

AN:

68042

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000140

Hom.:

Bravo

AF:

0.0000642

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000189

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 07, 2018

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

proposed classification - variant undergoing re-assessment, contact laboratory -

Bronchiectasis with or without elevated sweat chloride 2;C4748292:Liddle syndrome 3;C5774176:Pseudohypoaldosteronism, type IB1, autosomal recessive

Uncertain:1

Nov 03, 2021

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:1

Apr 15, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.50

BayesDel_addAF

Uncertain

0.077

BayesDel_noAF

Pathogenic

0.18

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.53

.;.;D;T;.

Eigen

Pathogenic

0.82

Eigen_PC

Pathogenic

0.74

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.96

D;D;D;D;D

M_CAP

Uncertain

0.10

MetaRNN

Uncertain

0.43

T;T;T;T;T

MetaSVM

Uncertain

0.013

MutationAssessor

Uncertain

2.7

.;.;M;.;.

PhyloP100

7.4

PrimateAI

Uncertain

0.60

PROVEAN

Pathogenic

-6.3

D;D;D;D;D

REVEL

Uncertain

0.62

Sift

Uncertain

0.014

D;D;D;D;D

Sift4G

Pathogenic

0.0010

D;D;D;D;D

Polyphen

1.0

D;.;D;.;.

Vest4

0.93

MVP

0.90

MPC

0.66

ClinPred

0.39

GERP RS

3.9

Varity_R

0.59

gMVP

0.80

Mutation Taster

=96/4

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.050

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over