12-6374811-A-C

Variant names:

• chr12-6374811-A-C
• ENST00000360168.7:c.150T>G
• SCNN1A p.Pro50Pro

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_001159576.2(SCNN1A):​c.150T>G​(p.Pro50Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. P50P) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SCNN1A NM_001159576.2 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.09
• Publications: 0 publications found

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]

LTBR (HGNC:6718): (lymphotoxin beta receptor) This gene encodes a member of the tumor necrosis factor receptor superfamily. The major ligands of this receptor include lymphotoxin alpha/beta and tumor necrosis factor ligand superfamily member 14. The encoded protein plays a role in signalling during the development of lymphoid and other organs, lipid metabolism, immune response, and programmed cell death. Activity of this receptor has also been linked to carcinogenesis. Alternatively spliced transcript variants encoding multiple isoforms have been observed. [provided by RefSeq, Aug 2012]

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.95).
• BP7: Synonymous conserved (PhyloP=-1.09 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001159576.2. 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
	SCNN1A	NM_001038.6	MANE Select	c.-28T>G		5_prime_UTR	Exon 2 of 13	NP_001029.1	P37088-1
	SCNN1A	NM_001159576.2		c.150T>G	p.Pro50Pro	synonymous	Exon 1 of 12	NP_001153048.1	P37088-2
	SCNN1A	NM_001159575.2		c.42T>G	p.Pro14Pro	synonymous	Exon 2 of 13	NP_001153047.1	P37088-6

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SCNN1A	ENST00000360168.7	TSL:1	c.150T>G	p.Pro50Pro	synonymous	Exon 1 of 12	ENSP00000353292.3	P37088-2
	SCNN1A	ENST00000228916.7	TSL:1 MANE Select	c.-28T>G		5_prime_UTR	Exon 2 of 13	ENSP00000228916.2	P37088-1
	SCNN1A	ENST00000543768.1	TSL:2	c.42T>G	p.Pro14Pro	synonymous	Exon 2 of 13	ENSP00000438739.1	P37088-6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.95
CADD	Benign	1.6
DANN	Benign	0.68
PhyloP100		-1.1
PromoterAI		0.0061	Neutral

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr12-6483977;