12-753363-C-T

Variant names:

• chr12-753363-C-T
• rs72647363
• NM_213655.5:c.-203C>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_213655.5(WNK1):​c.-203C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000198 in 504,876 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: 0.0000020 (0 hom.)
• Consequence: WNK1 NM_213655.5 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.23
• Publications: 1 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: Labcorp Genetics (formerly Invitae), ClinGen, G2P, 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: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.69).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
WNK1	NM_213655.5	c.-203C>T		5_prime_UTR_premature_start_codon_gain_variant	Exon 1 of 28	ENST00000340908.9	NP_998820.3
WNK1	NM_018979.4	c.-203C>T		5_prime_UTR_premature_start_codon_gain_variant	Exon 1 of 28	ENST00000315939.11	NP_061852.3
WNK1	NM_213655.5	c.-203C>T		5_prime_UTR_variant	Exon 1 of 28	ENST00000340908.9	NP_998820.3
WNK1	NM_018979.4	c.-203C>T		5_prime_UTR_variant	Exon 1 of 28	ENST00000315939.11	NP_061852.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
WNK1	ENST00000340908.9	c.-203C>T		5_prime_UTR_premature_start_codon_gain_variant	Exon 1 of 28	5	NM_213655.5	ENSP00000341292.5
WNK1	ENST00000315939.11	c.-203C>T		5_prime_UTR_premature_start_codon_gain_variant	Exon 1 of 28	1	NM_018979.4	ENSP00000313059.6
WNK1	ENST00000340908.9	c.-203C>T		5_prime_UTR_variant	Exon 1 of 28	5	NM_213655.5	ENSP00000341292.5
WNK1	ENST00000315939.11	c.-203C>T		5_prime_UTR_variant	Exon 1 of 28	1	NM_018979.4	ENSP00000313059.6

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000198 AC: 1 AN: 504876 Hom.: 0 Cov.: 6 AF XY: 0.00000379 AC XY: 1 AN XY: 263782

⚠️ 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: 11756

American (AMR) AF: 0.00 AC: 0 AN: 17456

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 13394

East Asian (EAS) AF: 0.00 AC: 0 AN: 29690

South Asian (SAS) AF: 0.00 AC: 0 AN: 46060

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 29580

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2072

European-Non Finnish (NFE) AF: 0.00000305 AC: 1 AN: 327446

Other (OTH) AF: 0.00 AC: 0 AN: 27422

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.69
CADD	Benign	11
DANN	Benign	0.92
PhyloP100		2.2
PromoterAI		0.038	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.2

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: rs72647363; hg19: chr12-862529;