12-6347406-G-T

Position:

chr12-6347406-G-T

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_001038.6(SCNN1A):c.*467C>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000695 in 166,896 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00075 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000069 ( 0 hom. )

Consequence

SCNN1A
NM_001038.6 3_prime_UTR

Scores

Clinical Significance

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

Conservation

PhyloP100: 0.0820

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.88).

BP6

Variant 12-6347406-G-T is Benign according to our data. Variant chr12-6347406-G-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 883148.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Benign=1}.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000755 (115/152318) while in subpopulation AFR AF= 0.00245 (102/41552). AF 95% confidence interval is 0.00207. There are 0 homozygotes in gnomad4. There are 54 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	#exon/exons	MANE
SCNN1A	NM_001038.6 linkuse as main transcript	c.*467C>A	3_prime_UTR_variant	13/13	ENST00000228916.7
SCNN1A	NM_001159575.2 linkuse as main transcript	c.*467C>A	3_prime_UTR_variant	13/13
SCNN1A	NM_001159576.2 linkuse as main transcript	c.*467C>A	3_prime_UTR_variant	12/12

Ensembl

Gene	Transcript	HGVSc	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SCNN1A	ENST00000228916.7 linkuse as main transcript	c.*467C>A	3_prime_UTR_variant	13/13	1	NM_001038.6	A2	P37088-1
SCNN1A	ENST00000360168.7 linkuse as main transcript	c.*467C>A	3_prime_UTR_variant	12/12	1		A2	P37088-2
SCNN1A	ENST00000540037.5 linkuse as main transcript	c.*467C>A	3_prime_UTR_variant	11/11	1

Frequencies

GnomAD3 genomes

AF:

0.000756

AC:

115

AN:

152200

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00246

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00239

GnomAD4 exome

AF:

0.0000686

AC:

AN:

14578

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

7750

show subpopulations

Gnomad4 AFR exome

AF:

0.00329

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.000755

AC:

115

AN:

152318

Hom.:

Cov.:

AF XY:

0.000725

AC XY:

AN XY:

74482

show subpopulations

Gnomad4 AFR

AF:

0.00245

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00237

Alfa

AF:

0.000996

Hom.:

Bravo

AF:

0.000858

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Pseudohypoaldosteronism, type IB1, autosomal recessive

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Bronchiectasis with or without elevated sweat chloride 2

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.88

CADD

Benign

6.5

DANN

Benign

0.65

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over