12-881682-C-A

Variant names:

• chr12-881682-C-A
• rs72650715
• NM_213655.5:c.3868-10C>A

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_018979.4(WNK1):​c.3112-10C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000688 in 1,452,744 control chromosomes in the GnomAD database, with no homozygous occurrence. 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: not found (cov: 31)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: WNK1 NM_018979.4 intron
• Scores: Splicing: ADA: 0.9995
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.160
• Publications: 0 publications found

Genes affected

WNK1 (HGNC:14540): (WNK lysine deficient protein kinase 1) This gene encodes a member of the WNK subfamily of serine/threonine protein kinases. The encoded protein may be a key regulator of blood pressure by controlling the transport of sodium and chloride ions. Mutations in this gene have been associated with pseudohypoaldosteronism type II and hereditary sensory neuropathy type II. Alternatively spliced transcript variants encoding different isoforms have been described but the full-length nature of all of them has yet to be determined.[provided by RefSeq, May 2010]

WNK1 Gene-Disease associations (from GenCC):

• neuropathy, hereditary sensory and autonomic, type 2A

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), ClinGen, Ambry Genetics
• pseudohypoaldosteronism type 2C

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
• hereditary sensory and autonomic neuropathy type 2

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018979.4. 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
	WNK1	NM_213655.5	MANE Plus Clinical	c.3868-10C>A		intron	N/A	NP_998820.3	Q9H4A3-5
	WNK1	NM_018979.4	MANE Select	c.3112-10C>A		intron	N/A	NP_061852.3	Q9H4A3-1
	WNK1	NM_001184985.2		c.3892-10C>A		intron	N/A	NP_001171914.1	Q9H4A3-6

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	WNK1	ENST00000340908.9	TSL:5 MANE Plus Clinical	c.3868-10C>A		intron	N/A	ENSP00000341292.5	Q9H4A3-5
	WNK1	ENST00000315939.11	TSL:1 MANE Select	c.3112-10C>A		intron	N/A	ENSP00000313059.6	Q9H4A3-1
	WNK1	ENST00000530271.6	TSL:1	c.4351-10C>A		intron	N/A	ENSP00000433548.3	Q9H4A3-7

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 6.88e-7 AC: 1 AN: 1452744 Hom.: 0 Cov.: 27 AF XY: 0.00 AC XY: 0 AN XY: 723478

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33304

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26062

East Asian (EAS) AF: 0.00 AC: 0 AN: 39648

South Asian (SAS) AF: 0.00 AC: 0 AN: 86068

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53402

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5738

European-Non Finnish (NFE) AF: 9.06e-7 AC: 1 AN: 1103736

Other (OTH) AF: 0.00 AC: 0 AN: 60062

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.79
CADD	Benign	20
DANN	Benign	0.55
PhyloP100		0.16
PromoterAI		-0.024	Neutral

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.95
SpliceAI score (max)		0.94		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.94		Position offset: 2
DS_AL_spliceai		0.89		Position offset: 10

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

Other links and lift over

dbSNP: rs72650715; hg19: chr12-990848;