Genetic Variant KLHL1:p.Met539Val (chr13-69796762-T-C) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_020866.3(KLHL1):c.1615A>G(p.Met539Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,168 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 Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

KLHL1
NM_020866.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.95

Publications

0 publications found

Variant links:

Genes affected

KLHL1 (HGNC:6352): (kelch like family member 1) The KLHL1 protein belongs to a family of actin-organizing proteins related to Drosophila Kelch (Nemes et al., 2000 [PubMed 10888605]).[supplied by OMIM, Feb 2010]

KLHL1 links:

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ACMG classification

Classification was made for transcript

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, 0.871

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KLHL1	NM_020866.3 link	c.1615A>G	p.Met539Val	missense_variant	Exon 7 of 11	ENST00000377844.9	NP_065917.1	Q9NR64Q8TBJ7
KLHL1	NM_001286725.2 link	c.1432A>G	p.Met478Val	missense_variant	Exon 6 of 10		NP_001273654.1	Q9NR64F5H1J3Q8TBJ7B7Z3I8
KLHL1	XM_017020678.3 link	c.1096A>G	p.Met366Val	missense_variant	Exon 7 of 11		XP_016876167.1
KLHL1	XM_017020679.2 link	c.946A>G	p.Met316Val	missense_variant	Exon 7 of 11		XP_016876168.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KLHL1	ENST00000377844.9 link	c.1615A>G	p.Met539Val	missense_variant	Exon 7 of 11	1	NM_020866.3	ENSP00000367075.4		Q9NR64
KLHL1	ENST00000545028.2 link	c.1432A>G	p.Met478Val	missense_variant	Exon 6 of 10	2		ENSP00000439602.2		F5H1J3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460168

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726534

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33440

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26122

East Asian (EAS)

AF:

0.00

AC:

AN:

39684

South Asian (SAS)

AF:

0.00

AC:

AN:

86210

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

9.01e-7

AC:

AN:

1110478

Other (OTH)

AF:

0.00

AC:

AN:

60330

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 19, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1615A>G (p.M539V) alteration is located in exon 7 (coding exon 7) of the KLHL1 gene. This alteration results from a A to G substitution at nucleotide position 1615, causing the methionine (M) at amino acid position 539 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.78

BayesDel_addAF

Pathogenic

0.27

BayesDel_noAF

Pathogenic

0.16

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.77

D;.

Eigen

Pathogenic

0.81

Eigen_PC

Pathogenic

0.77

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.97

D;D

M_CAP

Pathogenic

0.33

MetaRNN

Pathogenic

0.87

D;D

MetaSVM

Uncertain

0.75

MutationAssessor

Pathogenic

3.4

M;.

PhyloP100

8.0

PrimateAI

Uncertain

0.57

PROVEAN

Uncertain

-3.0

D;.

REVEL

Pathogenic

0.89

Sift

Uncertain

0.029

D;.

Sift4G

Uncertain

0.026

D;D

Polyphen

0.93

P;.

Vest4

0.85

MutPred

0.57

Gain of catalytic residue at L536 (P = 0);.;

MVP

0.93

MPC

0.36

ClinPred

0.99

GERP RS

5.4

Varity_R

0.46

gMVP

0.74

Mutation Taster

=60/40

polymorphism

(source)

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over