chr3-42685634-G-A

Position:

• chr3-42685634-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_152393.4(KLHL40):​c.16G>A​(p.Glu6Lys) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: KLHL40 NM_152393.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.94

Genes affected

KLHL40 (HGNC:30372): (kelch like family member 40) This gene encodes a protein containing a BACK domain, a BTB/POZ domain, and 5 Kelch repeats, however, its exact function is not known. The gene and the multi-domain protein structure are conserved across different taxa, including primates, rodents, chicken and zebrafish. [provided by RefSeq, Dec 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.1991848).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KLHL40	NM_152393.4	c.16G>A	p.Glu6Lys	missense_variant	1/6	ENST00000287777.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KLHL40	ENST00000287777.5	c.16G>A	p.Glu6Lys	missense_variant	1/6	1	NM_152393.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 14, 2022

The c.16G>A (p.E6K) alteration is located in exon 1 (coding exon 1) of the KLHL40 gene. This alteration results from a G to A substitution at nucleotide position 16, causing the glutamic acid (E) at amino acid position 6 to be replaced by a lysine (K). 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	Benign	0.20
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.40
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.042	T
Eigen	Benign	0.12
Eigen_PC	Uncertain	0.22
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Benign	0.83	T
M_CAP	Benign	0.052	D
MetaRNN	Benign	0.20	T
MetaSVM	Benign	-0.41	T
MutationAssessor	Benign	1.6	L
MutationTaster	Benign	0.66	N
PrimateAI	Uncertain	0.57	T
PROVEAN	Benign	-1.2	N
REVEL	Benign	0.14
Sift	Uncertain	0.012	D
Sift4G	Uncertain	0.022	D
Polyphen		0.44	B
Vest4		0.32
MutPred		0.35		Gain of ubiquitination at E6 (P = 0.0025);
MVP		0.71
MPC		0.79
ClinPred		0.69	D
GERP RS		5.0
Varity_R		0.25
gMVP		0.45

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr3-42727126; COSMIC: COSV55137670;