NM_000170.3:c.319A>G

Variant names:

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BA1

The NM_000170.3(GLDC):c.319A>G(p.Met107Val) variant causes a missense change. The variant allele was found at a frequency of 0.00442 in 1,611,854 control chromosomes in the GnomAD database, including 359 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0074 ( 62 hom., cov: 31)

Exomes 𝑓: 0.0041 ( 297 hom. )

Consequence

GLDC
NM_000170.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:6

Conservation

PhyloP100: 4.01

Variant links:

Genes affected

GLDC (HGNC:4313): (glycine decarboxylase) Degradation of glycine is brought about by the glycine cleavage system, which is composed of four mitochondrial protein components: P protein (a pyridoxal phosphate-dependent glycine decarboxylase), H protein (a lipoic acid-containing protein), T protein (a tetrahydrofolate-requiring enzyme), and L protein (a lipoamide dehydrogenase). The protein encoded by this gene is the P protein, which binds to glycine and enables the methylamine group from glycine to be transferred to the T protein. Defects in this gene are a cause of nonketotic hyperglycinemia (NKH).[provided by RefSeq, Jan 2010]

GLDC links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.002174139).

BP6

Variant 9-6644629-T-C is Benign according to our data. Variant chr9-6644629-T-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 255457.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Benign=4, Uncertain_significance=1}. Variant chr9-6644629-T-C is described in Lovd as [Benign].

BA1

GnomAd4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.0603 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GLDC	NM_000170.3 link	c.319A>G	p.Met107Val	missense_variant	Exon 2 of 25	ENST00000321612.8	NP_000161.2	P23378

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
GLDC	ENST00000321612.8 link	c.319A>G	p.Met107Val	missense_variant	Exon 2 of 25	1	NM_000170.3	ENSP00000370737.4	P23378
GLDC	ENST00000639954.1 link	n.163A>G		non_coding_transcript_exon_variant	Exon 1 of 23	5
GLDC	ENST00000640592.1 link	n.202A>G		non_coding_transcript_exon_variant	Exon 1 of 16	5
GLDC	ENST00000639364.1 link	n.-65A>G		upstream_gene_variant		5

Frequencies

GnomAD3 genomes

AF:

0.00734

AC:

1117

AN:

152184

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00128

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0635

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000385

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00141

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000882

Gnomad OTH

AF:

0.00815

GnomAD3 exomes

AF:

0.0163

AC:

4095

AN:

251404

Hom.:

239

AF XY:

0.0126

AC XY:

1707

AN XY:

135900

show subpopulations

Gnomad AFR exome

AF:

0.000677

Gnomad AMR exome

AF:

0.110

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000327

Gnomad FIN exome

AF:

0.00167

Gnomad NFE exome

AF:

0.00135

Gnomad OTH exome

AF:

0.0125

GnomAD4 exome

AF:

0.00411

AC:

6000

AN:

1459552

Hom.:

297

Cov.:

AF XY:

0.00364

AC XY:

2641

AN XY:

726304

show subpopulations

Gnomad4 AFR exome

AF:

0.000777

Gnomad4 AMR exome

AF:

0.108

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000267

Gnomad4 FIN exome

AF:

0.00210

Gnomad4 NFE exome

AF:

0.000667

Gnomad4 OTH exome

AF:

0.00415

GnomAD4 genome

AF:

0.00735

AC:

1120

AN:

152302

Hom.:

Cov.:

AF XY:

0.00818

AC XY:

609

AN XY:

74482

show subpopulations

Gnomad4 AFR

AF:

0.00128

Gnomad4 AMR

AF:

0.0636

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000386

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00141

Gnomad4 NFE

AF:

0.000882

Gnomad4 OTH

AF:

0.00806

Alfa

AF:

0.00139

Hom.:

Bravo

AF:

0.0117

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000778

AC:

ESP6500AA

AF:

0.00113

AC:

ESP6500EA

AF:

0.000814

AC:

ExAC

AF:

0.0122

AC:

1479

Asia WGS

AF:

0.00289

AC:

AN:

3478

EpiCase

AF:

0.000709

EpiControl

AF:

0.000830

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:6

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Glycine encephalopathy

Uncertain:1Benign:3

Apr 01, 2020

Elsea Laboratory, Baylor College of Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Sep 16, 2020

Natera, Inc.

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

not specified

Benign:2

Dec 10, 2021

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Benign:1

Jul 17, 2018

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is associated with the following publications: (PMID: 27243974) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Uncertain

-0.010

CADD

Benign

DANN

Benign

0.95

DEOGEN2

Benign

0.39

Eigen

Benign

-0.53

Eigen_PC

Benign

-0.33

FATHMM_MKL

Uncertain

0.84

LIST_S2

Uncertain

0.86

MetaRNN

Benign

0.0022

MetaSVM

Benign

-0.82

MutationAssessor

Benign

-0.81

PrimateAI

Benign

0.45

PROVEAN

Benign

-0.57

REVEL

Uncertain

0.48

Sift

Benign

0.10

Sift4G

Benign

0.25

Polyphen

0.0030

Vest4

0.26

MPC

0.048

ClinPred

0.014

GERP RS

2.2

Varity_R

0.37

gMVP

0.80

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

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