rs199469640

Variant names:

• chr5-137639874-C-A
• rs199469640
• NM_017415.3:c.1007G>T

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM2 PP2 PP3_Moderate PP5_Moderate

The NM_017415.3(KLHL3):​c.1007G>T​(p.Arg336Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,710 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: KLHL3 NM_017415.3 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:3
• Conservation: PhyloP100: 7.63
• Publications: 6 publications found

Genes affected

KLHL3 (HGNC:6354): (kelch like family member 3) This gene is ubiquitously expressed and encodes a full-length protein which has an N-terminal BTB domain followed by a BACK domain and six kelch-like repeats in the C-terminus. These kelch-like repeats promote substrate ubiquitination of bound proteins via interaction of the BTB domain with the CUL3 (cullin 3) component of a cullin-RING E3 ubiquitin ligase (CRL) complex. Muatations in this gene cause pseudohypoaldosteronism type IID (PHA2D); a rare Mendelian syndrome featuring hypertension, hyperkalaemia and metabolic acidosis. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Mar 2012]

KLHL3 Gene-Disease associations (from GenCC):

• pseudohypoaldosteronism type 2D

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

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the KLHL3 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 22 curated pathogenic missense variants (we use a threshold of 10). The gene has 0 curated benign missense variants. Gene score misZ: 2.9931 (below the threshold of 3.09). Trascript score misZ: 3.5661 (above the threshold of 3.09). GenCC associations: The gene is linked to pseudohypoaldosteronism type 2D.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.906
• PP5: Variant 5-137639874-C-A is Pathogenic according to our data. Variant chr5-137639874-C-A is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 30520.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KLHL3	NM_017415.3	c.1007G>T	p.Arg336Ile	missense_variant	Exon 9 of 15	ENST00000309755.9	NP_059111.2
KLHL3	NM_001257194.1	c.911G>T	p.Arg304Ile	missense_variant	Exon 9 of 15		NP_001244123.1
KLHL3	NM_001257195.2	c.761G>T	p.Arg254Ile	missense_variant	Exon 7 of 13		NP_001244124.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KLHL3	ENST00000309755.9	c.1007G>T	p.Arg336Ile	missense_variant	Exon 9 of 15	1	NM_017415.3	ENSP00000312397.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251318 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461710 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727164

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.0000224 AC: 1 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86246

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111848

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, single submitter

Submissions by phenotype

Pseudohypoaldosteronism type 2D Pathogenic:2

Jan 23, 2024

Fulgent Genetics, Fulgent Genetics

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 22, 2012

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Pseudohypoaldosteronism type 2A Pathogenic:1

-

Richard Lifton Laboratory, Yale University School of Medicine

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.35	D
BayesDel_noAF	Pathogenic	0.34
CADD	Pathogenic	32
DANN	Uncertain	0.99
DEOGEN2	Benign	0.28	.;.;T;.
Eigen	Pathogenic	0.79
Eigen_PC	Uncertain	0.66
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	1.0	D;D;D;D
M_CAP	Uncertain	0.10	D
MetaRNN	Pathogenic	0.91	D;D;D;D
MetaSVM	Uncertain	0.62	D
MutationAssessor	Uncertain	2.7	.;.;M;.
PhyloP100		7.6
PrimateAI	Pathogenic	0.84	D
PROVEAN	Pathogenic	-7.8	D;D;D;D
REVEL	Pathogenic	0.80
Sift	Uncertain	0.0020	D;D;D;D
Sift4G	Uncertain	0.032	D;D;D;.
Polyphen		1.0	.;D;D;D
Vest4		0.89
MutPred		0.68		.;.;Loss of MoRF binding (P = 0.072);.;
MVP		0.92
MPC		2.2
ClinPred		1.0	D
GERP RS		4.4
Varity_R		0.91
gMVP		0.80
Mutation Taster		=6/94	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs199469640; hg19: chr5-136975563;