chr16-23186358-G-A

Variant names:

• chr16-23186358-G-A
• NM_001039.4:c.87G>A

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_001039.4(SCNN1G):​c.87G>A​(p.Met29Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: SCNN1G NM_001039.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.29
• Publications: 0 publications found

Genes affected

SCNN1G (HGNC:10602): (sodium channel epithelial 1 subunit gamma) 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 gamma subunit, and mutations in this gene have been associated with Liddle syndrome. [provided by RefSeq, Apr 2009]

SCNN1G Gene-Disease associations (from GenCC):

• Liddle syndrome

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
• Liddle syndrome 2

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Laboratory for Molecular Medicine, Ambry Genetics, PanelApp Australia, Labcorp Genetics (formerly Invitae)
• pseudohypoaldosteronism, type IB1, autosomal recessive

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), Orphanet

ENSG00000285613 (HGNC:):

ACMG classification

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, 0.851

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001039.4. 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
	SCNN1G	NM_001039.4	MANE Select	c.87G>A	p.Met29Ile	missense	Exon 2 of 13	NP_001030.2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SCNN1G	ENST00000300061.3	TSL:1 MANE Select	c.87G>A	p.Met29Ile	missense	Exon 2 of 13	ENSP00000300061.2	P51170
	SCNN1G	ENST00000876142.1		c.87G>A	p.Met29Ile	missense	Exon 1 of 12	ENSP00000546201.1
	SCNN1G	ENST00000876141.1		c.87G>A	p.Met29Ile	missense	Exon 2 of 13	ENSP00000546200.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Bronchiectasis with or without elevated sweat chloride 3;C4748251:Liddle syndrome 2;C5774256:Pseudohypoaldosteronism, type IB3, autosomal recessive (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.81
BayesDel_addAF	Uncertain	0.089	D
BayesDel_noAF	Benign	-0.11
CADD	Pathogenic	27
DANN	Uncertain	0.99
DEOGEN2	Benign	0.24	T
Eigen	Uncertain	0.42
Eigen_PC	Uncertain	0.44
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.85	D
M_CAP	Benign	0.080	D
MetaRNN	Pathogenic	0.85	D
MetaSVM	Benign	-0.35	T
MutationAssessor	Benign	0.81	L
PhyloP100		7.3
PrimateAI	Uncertain	0.68	T
PROVEAN	Benign	-1.1	N
REVEL	Uncertain	0.40
Sift	Benign	0.032	D
Sift4G	Uncertain	0.034	D
Polyphen		0.99	D
Vest4		0.72
MutPred		0.70		Loss of ubiquitination at K26 (P = 0.0853)
MVP		0.82
MPC		2.3
ClinPred		0.91	D
GERP RS		5.4
Varity_R		0.32
gMVP		0.93

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

hg19: chr16-23197679;