rs149172890

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_000336.3(SCNN1B):​c.1299C>A​(p.Ser433Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,850 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 benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. S433S) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

SCNN1B
NM_000336.3 missense

Scores

1
3
15

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.49

Publications

0 publications found
Variant links:
Genes affected
SCNN1B (HGNC:10600): (sodium channel epithelial 1 subunit beta) 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 beta subunit, and mutations in this gene have been associated with pseudohypoaldosteronism type 1 (PHA1), and Liddle syndrome. [provided by RefSeq, Apr 2009]
SCNN1B Gene-Disease associations (from GenCC):
  • Liddle syndrome 1
    Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
  • pseudohypoaldosteronism, type IB2, autosomal recessive
    Inheritance: AR Classification: DEFINITIVE Submitted by: Ambry Genetics
  • bronchiectasis with or without elevated sweat chloride 1
    Inheritance: AD, SD Classification: STRONG, LIMITED Submitted by: PanelApp Australia, Ambry Genetics
  • pseudohypoaldosteronism, type IB1, autosomal recessive
    Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
  • Liddle syndrome
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.824

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SCNN1BNM_000336.3 linkc.1299C>A p.Ser433Arg missense_variant Exon 9 of 13 ENST00000343070.7 NP_000327.2 P51168-1B2R812

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SCNN1BENST00000343070.7 linkc.1299C>A p.Ser433Arg missense_variant Exon 9 of 13 1 NM_000336.3 ENSP00000345751.2 P51168-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
AF:
0.00000274
AC:
4
AN:
1461850
Hom.:
0
Cov.:
33
AF XY:
0.00000413
AC XY:
3
AN XY:
727224
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33480
American (AMR)
AF:
0.00
AC:
0
AN:
44716
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26136
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86248
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53414
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.00000360
AC:
4
AN:
1111992
Other (OTH)
AF:
0.00
AC:
0
AN:
60396
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.463
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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.:
32
EpiCase
AF:
0.0000545
EpiControl
AF:
0.00

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Bronchiectasis with or without elevated sweat chloride 1;C5774255:Pseudohypoaldosteronism, type IB2, autosomal recessive;CN031472:Liddle syndrome 1 Uncertain:1
Apr 30, 2024
Fulgent Genetics, Fulgent Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.38
BayesDel_addAF
Benign
-0.10
T
BayesDel_noAF
Benign
-0.39
CADD
Benign
9.3
DANN
Benign
0.94
DEOGEN2
Benign
0.17
T;.;.;.
Eigen
Benign
-0.48
Eigen_PC
Benign
-0.67
FATHMM_MKL
Benign
0.035
N
LIST_S2
Benign
0.83
T;T;T;T
M_CAP
Benign
0.065
D
MetaRNN
Pathogenic
0.82
D;D;D;D
MetaSVM
Benign
-0.90
T
MutationAssessor
Benign
1.7
L;.;.;.
PhyloP100
-1.5
PrimateAI
Benign
0.46
T
PROVEAN
Benign
-1.5
N;N;N;N
REVEL
Uncertain
0.29
Sift
Benign
0.11
T;T;T;T
Sift4G
Uncertain
0.0040
D;D;D;D
Polyphen
0.93
P;.;.;.
Vest4
0.58
MutPred
0.65
Loss of catalytic residue at V434 (P = 0.1481);.;.;.;
MVP
0.76
MPC
0.38
ClinPred
0.72
D
GERP RS
0.47
Varity_R
0.16
gMVP
0.66
Mutation Taster
=83/17
polymorphism

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

Other links and lift over

dbSNP: rs149172890; hg19: chr16-23388514; API