Variant 18-63367067-T-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_002035.4(KDSR):c.52A>C(p.Met18Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000015 in 1,335,854 control chromosomes in the GnomAD database, with no homozygous occurrence. 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: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 8.4e-7 ( 0 hom. )

Consequence

KDSR
NM_002035.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.63

Variant links:

Genes affected

KDSR (HGNC:4021): (3-ketodihydrosphingosine reductase) The protein encoded by this gene catalyzes the reduction of 3-ketodihydrosphingosine to dihydrosphingosine. The putative active site residues of the encoded protein are found on the cytosolic side of the endoplasmic reticulum membrane. A chromosomal rearrangement involving this gene is a cause of follicular lymphoma, also known as type II chronic lymphatic leukemia. The mutation of a conserved residue in the bovine ortholog causes spinal muscular atrophy. [provided by RefSeq, Jul 2008]

KDSR links:

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ACMG classification

Classification made for transcript

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=0.25330952).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KDSR	NM_002035.4 linkuse as main transcript	c.52A>C	p.Met18Leu	missense_variant	1/10	ENST00000645214.2	NP_002026.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KDSR	ENST00000645214.2 linkuse as main transcript	c.52A>C	p.Met18Leu	missense_variant	1/10		NM_002035.4	ENSP00000494352	P1	Q06136-1

Frequencies

GnomAD3 genomes

AF:

0.00000659

AC:

AN:

151686

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

8.44e-7

AC:

AN:

1184168

Hom.:

Cov.:

AF XY:

0.00000175

AC XY:

AN XY:

572776

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000323

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000659

AC:

AN:

151686

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74088

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ExAC

AF:

0.00000832

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 19, 2023

The c.52A>C (p.M18L) alteration is located in exon 1 (coding exon 1) of the KDSR gene. This alteration results from a A to C substitution at nucleotide position 52, causing the methionine (M) at amino acid position 18 to be replaced by a leucine (L). 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

0.13

BayesDel_addAF

Uncertain

0.044

BayesDel_noAF

Benign

-0.17

CADD

Benign

DANN

Benign

0.92

DEOGEN2

Benign

0.25

T;T;.;.;T

Eigen

Benign

-0.52

Eigen_PC

Benign

-0.33

FATHMM_MKL

Uncertain

0.81

LIST_S2

Benign

0.83

.;T;T;T;T

M_CAP

Pathogenic

0.72

MetaRNN

Benign

0.25

T;T;T;T;T

MetaSVM

Benign

-0.85

MutationAssessor

Benign

0.0

N;N;.;N;.

MutationTaster

Benign

1.0

D;D

PrimateAI

Pathogenic

0.94

PROVEAN

Benign

-0.36

.;N;.;N;.

REVEL

Benign

0.25

Sift

Benign

0.78

.;T;.;T;.

Sift4G

Benign

1.0

.;T;.;T;.

Polyphen

0.0

B;B;.;.;.

Vest4

0.44, 0.55

MutPred

0.46

Loss of helix (P = 0.1299);Loss of helix (P = 0.1299);Loss of helix (P = 0.1299);Loss of helix (P = 0.1299);Loss of helix (P = 0.1299);

MVP

0.83

MPC

0.27

ClinPred

0.38

GERP RS

3.0

Varity_R

0.48

gMVP

0.56

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over