3-52290380-G-A

Position:

chr3-52290380-G-A

Variant summary

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

The NM_145262.4(GLYCTK):c.38G>A(p.Arg13Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000193 in 1,603,218 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

GLYCTK
NM_145262.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 1.66

Variant links:

Genes affected

GLYCTK (HGNC:24247): (glycerate kinase) This locus encodes a member of the glycerate kinase type-2 family. The encoded enzyme catalyzes the phosphorylation of (R)-glycerate and may be involved in serine degradation and fructose metabolism. Decreased activity of the encoded enzyme may be associated with the disease D-glyceric aciduria. Alternatively spliced transcript variants have been described. [provided by RefSeq, Jan 2009]

GLYCTK links:

GLYCTK-AS1 (HGNC:41043): (GLYCTK antisense RNA 1)

GLYCTK-AS1 links:

Genome browser will be placed here

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=0.1272471).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GLYCTK	NM_145262.4 linkuse as main transcript	c.38G>A	p.Arg13Gln	missense_variant	2/5	ENST00000436784.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GLYCTK	ENST00000436784.7 linkuse as main transcript	c.38G>A	p.Arg13Gln	missense_variant	2/5	1	NM_145262.4	P1	Q8IVS8-1
GLYCTK-AS1	ENST00000493616.1 linkuse as main transcript	n.304-1656C>T		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152228

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000633

AC:

AN:

236854

Hom.:

AF XY:

0.0000536

AC XY:

AN XY:

130646

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000408

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000559

Gnomad SAS 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:

0.0000193

AC:

AN:

1450990

Hom.:

Cov.:

AF XY:

0.0000166

AC XY:

AN XY:

722206

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000313

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000108

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152228

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74358

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:

0.0000441

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000189

ExAC

AF:

0.0000248

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 30, 2022

The c.38G>A (p.R13Q) alteration is located in exon 2 (coding exon 1) of the GLYCTK gene. This alteration results from a G to A substitution at nucleotide position 38, causing the arginine (R) at amino acid position 13 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

May 08, 2023

Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The glutamine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. ClinVar contains an entry for this variant (Variation ID: 1406594). This variant has not been reported in the literature in individuals affected with GLYCTK-related conditions. This variant is present in population databases (rs781073570, gnomAD 0.04%). This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 13 of the GLYCTK protein (p.Arg13Gln). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.097

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.36

CADD

Uncertain

DANN

Pathogenic

1.0

Eigen

Benign

-0.22

Eigen_PC

Benign

-0.11

FATHMM_MKL

Uncertain

0.82

LIST_S2

Benign

0.81

T;T;T;.

M_CAP

Benign

0.0091

MetaRNN

Benign

0.13

T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.1

M;M;M;M

MutationTaster

Benign

1.0

D;D;N;N;N;N;N

PrimateAI

Uncertain

0.57

PROVEAN

Benign

-0.73

N;N;N;N

REVEL

Benign

0.087

Sift

Benign

0.083

T;D;D;D

Sift4G

Benign

0.14

T;T;T;T

Polyphen

0.94

P;.;B;P

Vest4

0.26

MutPred

0.30

Loss of MoRF binding (P = 0.0102);Loss of MoRF binding (P = 0.0102);Loss of MoRF binding (P = 0.0102);Loss of MoRF binding (P = 0.0102);

MVP

0.49

MPC

0.12

ClinPred

0.16

GERP RS

3.8

Varity_R

0.070

gMVP

0.58

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