Genetic Variant SCNN1G:p.Arg30Gly (chr16-23186359-C-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_001039.4(SCNN1G):c.88C>G(p.Arg30Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000479 in 1,461,854 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

SCNN1G
NM_001039.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.472

Publications

0 publications found

Variant links:

Genes affected

SCNN1G (HGNC:10602): (sodium channel epithelial 1 subunit gamma) 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 gamma subunit, and mutations in this gene have been associated with Liddle syndrome. [provided by RefSeq, Apr 2009]

SCNN1G Gene-Disease associations (from GenCC):

Liddle syndrome
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
Liddle syndrome 2
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Laboratory for Molecular Medicine, Ambry Genetics, PanelApp Australia, Labcorp Genetics (formerly Invitae)
pseudohypoaldosteronism, type IB1, autosomal recessive
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), Orphanet

SCNN1G links:

ENSG00000285613 (HGNC:):

ENSG00000285613 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.23836178).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001039.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SCNN1G	NM_001039.4	MANE Select	c.88C>G	p.Arg30Gly	missense	Exon 2 of 13	NP_001030.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SCNN1G	ENST00000300061.3	TSL:1 MANE Select	c.88C>G	p.Arg30Gly	missense	Exon 2 of 13	ENSP00000300061.2	P51170
SCNN1G	ENST00000876142.1		c.88C>G	p.Arg30Gly	missense	Exon 1 of 12	ENSP00000546201.1
SCNN1G	ENST00000876141.1		c.88C>G	p.Arg30Gly	missense	Exon 2 of 13	ENSP00000546200.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000479

AC:

AN:

1461854

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727236

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000540

AC:

AN:

1111976

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.489

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

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ESP6500AA

AF:

0.000228

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00000824

AC:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Bronchiectasis with or without elevated sweat chloride 3;C4748251:Liddle syndrome 2;C5774256:Pseudohypoaldosteronism, type IB3, autosomal recessive (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.043

BayesDel_noAF

Benign

-0.30

CADD

Benign

(source)

DANN

Benign

0.95

DEOGEN2

Uncertain

0.44

Eigen

Benign

-0.73

Eigen_PC

Benign

-0.62

FATHMM_MKL

Benign

0.33

LIST_S2

Benign

0.81

M_CAP

Benign

0.041

MetaRNN

Benign

0.24

MetaSVM

Benign

-0.93

MutationAssessor

Benign

0.55

PhyloP100

0.47

PrimateAI

Benign

0.23

PROVEAN

Benign

-1.9

REVEL

Benign

0.18

Sift

Benign

0.14

Sift4G

Benign

0.14

Polyphen

0.21

Vest4

0.52

MVP

0.57

MPC

1.6

ClinPred

0.084

GERP RS

3.4

Varity_R

0.12

gMVP

0.86

Mutation Taster

=81/19

polymorphism

(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