rs250563

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_000336.3(SCNN1B):​c.879C>G​(p.Phe293Leu) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000343 in 1,459,322 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. F293Y) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 34)
Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

SCNN1B
NM_000336.3 missense, splice_region

Scores

2
8
9
Splicing: ADA: 0.0009173
2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -1.72

Publications

12 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 4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.904

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SCNN1BNM_000336.3 linkc.879C>G p.Phe293Leu missense_variant, splice_region_variant Exon 5 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.879C>G p.Phe293Leu missense_variant, splice_region_variant Exon 5 of 13 1 NM_000336.3 ENSP00000345751.2 P51168-1

Frequencies

GnomAD3 genomes
Cov.:
34
GnomAD2 exomes
AF:
0.0000119
AC:
3
AN:
251486
AF XY:
0.0000147
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000343
AC:
5
AN:
1459322
Hom.:
0
Cov.:
31
AF XY:
0.00000413
AC XY:
3
AN XY:
726212
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33394
American (AMR)
AF:
0.00
AC:
0
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26122
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39684
South Asian (SAS)
AF:
0.0000580
AC:
5
AN:
86200
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53418
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1109718
Other (OTH)
AF:
0.00
AC:
0
AN:
60294
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.475
Heterozygous variant carriers
0
1
2
2
3
4
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.:
34
Alfa
AF:
0.00
Hom.:
1564
Bravo
AF:
0.00000378
ExAC
AF:
0.00000824
AC:
1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.97
BayesDel_addAF
Benign
-0.11
T
BayesDel_noAF
Benign
-0.19
CADD
Benign
7.4
DANN
Benign
0.96
DEOGEN2
Uncertain
0.45
T;.;.;.
Eigen
Benign
-0.85
Eigen_PC
Benign
-1.1
FATHMM_MKL
Benign
0.046
N
LIST_S2
Uncertain
0.87
D;D;D;D
M_CAP
Benign
0.036
D
MetaRNN
Pathogenic
0.90
D;D;D;D
MetaSVM
Uncertain
-0.15
T
MutationAssessor
Uncertain
2.9
M;.;.;.
PhyloP100
-1.7
PrimateAI
Uncertain
0.68
T
PROVEAN
Uncertain
-2.5
N;N;N;D
REVEL
Uncertain
0.43
Sift
Benign
0.039
D;T;T;D
Sift4G
Uncertain
0.017
D;D;D;D
Polyphen
1.0
D;.;.;.
Vest4
0.66
MutPred
0.60
Gain of disorder (P = 0.0893);.;Gain of disorder (P = 0.0893);.;
MVP
0.64
MPC
0.59
ClinPred
0.74
D
GERP RS
-7.9
Varity_R
0.43
gMVP
0.78
Mutation Taster
=56/44
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.00092
dbscSNV1_RF
Benign
0.10
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: rs250563; hg19: chr16-23379279; API