rs8055868

Variant names:

• chr16-23336930-G-A
• rs8055868
• NM_000336.3:c.-8-11662G>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_000336.3(SCNN1B):​c.-8-11662G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0756 in 152,176 control chromosomes in the GnomAD database, including 583 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.076 (583 hom., cov: 31)
• Consequence: SCNN1B NM_000336.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.461
• Publications: 9 publications found

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

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.229 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SCNN1B	NM_000336.3	c.-8-11662G>A		intron_variant	Intron 1 of 12	ENST00000343070.7	NP_000327.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SCNN1B	ENST00000343070.7	c.-8-11662G>A		intron_variant	Intron 1 of 12	1	NM_000336.3	ENSP00000345751.2
SCNN1B	ENST00000307331.9	c.128-11662G>A		intron_variant	Intron 2 of 13	5		ENSP00000302874.5
SCNN1B	ENST00000569789.1	n.179-11662G>A		intron_variant	Intron 2 of 3	4

Frequencies

GnomAD3 genomes AF: 0.0756 AC: 11503 AN: 152058 Hom.: 582 Cov.: 31

Gnomad AFR AF: 0.0792

Gnomad AMI AF: 0.0934

Gnomad AMR AF: 0.0654

Gnomad ASJ AF: 0.0648

Gnomad EAS AF: 0.240

Gnomad SAS AF: 0.152

Gnomad FIN AF: 0.0398

Gnomad MID AF: 0.123

Gnomad NFE AF: 0.0636

Gnomad OTH AF: 0.0719

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0756 AC: 11497 AN: 152176 Hom.: 583 Cov.: 31 AF XY: 0.0767 AC XY: 5708 AN XY: 74406

African (AFR) AF: 0.0791 AC: 3282 AN: 41514

American (AMR) AF: 0.0654 AC: 999 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.0648 AC: 225 AN: 3470

East Asian (EAS) AF: 0.240 AC: 1243 AN: 5186

South Asian (SAS) AF: 0.151 AC: 729 AN: 4820

European-Finnish (FIN) AF: 0.0398 AC: 422 AN: 10598

Middle Eastern (MID) AF: 0.129 AC: 38 AN: 294

European-Non Finnish (NFE) AF: 0.0635 AC: 4319 AN: 67992

Other (OTH) AF: 0.0735 AC: 155 AN: 2108

Alfa AF: 0.0701 Hom.: 1247

Bravo AF: 0.0775

Asia WGS AF: 0.170 AC: 589 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	3.1
DANN	Benign	0.54
PhyloP100		0.46
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs8055868; hg19: chr16-23348251;