Genetic Variant GLDC:p.Trp8Cys (chr9-6645476-C-G) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_000170.3(GLDC):c.24G>C(p.Trp8Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000394 in 1,268,654 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

GLDC
NM_000170.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.28

Publications

1 publications found

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 Gene-Disease associations (from GenCC):

glycine encephalopathy
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Myriad Women’s Health, Labcorp Genetics (formerly Invitae), ClinGen
glycine encephalopathy 1
Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
infantile glycine encephalopathy
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
neonatal glycine encephalopathy
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
atypical glycine encephalopathy
Inheritance: Unknown Classification: SUPPORTIVE Submitted by: Orphanet

GLDC links:

LINC02851 (HGNC:):

LINC02851 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.32925713).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GLDC	NM_000170.3 link	c.24G>C	p.Trp8Cys	missense_variant	Exon 1 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.24G>C	p.Trp8Cys	missense_variant	Exon 1 of 25	1	NM_000170.3	ENSP00000370737.4	P23378
LINC02851	ENST00000813373.1 link	n.124+550C>G		intron_variant	Intron 1 of 2
LINC02851	ENST00000813380.1 link	n.405+550C>G		intron_variant	Intron 1 of 2

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

151550

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:

0.0000295

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00

AC:

AN:

18984

AF XY:

0.00

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS 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:

0.00000269

AC:

AN:

1117104

Hom.:

Cov.:

AF XY:

0.00000371

AC XY:

AN XY:

538808

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

22558

American (AMR)

AF:

0.00

AC:

AN:

11500

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

14624

East Asian (EAS)

AF:

0.00

AC:

AN:

23926

South Asian (SAS)

AF:

0.00

AC:

AN:

31138

European-Finnish (FIN)

AF:

0.00

AC:

AN:

24084

Middle Eastern (MID)

AF:

0.00

AC:

AN:

2944

European-Non Finnish (NFE)

AF:

0.00000212

AC:

AN:

942116

Other (OTH)

AF:

0.0000226

AC:

AN:

44214

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.442

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000132

AC:

AN:

151550

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74002

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41304

American (AMR)

AF:

0.00

AC:

AN:

15232

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5102

South Asian (SAS)

AF:

0.00

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10446

Middle Eastern (MID)

AF:

0.00

AC:

AN:

310

European-Non Finnish (NFE)

AF:

0.0000295

AC:

AN:

67880

Other (OTH)

AF:

0.00

AC:

AN:

2082

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.39

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Uncertain

-0.070

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.36

Eigen

Benign

-0.52

Eigen_PC

Benign

-0.36

FATHMM_MKL

Benign

0.55

LIST_S2

Benign

0.62

M_CAP

Pathogenic

0.97

MetaRNN

Benign

0.33

MetaSVM

Uncertain

0.56

MutationAssessor

Benign

0.0

PhyloP100

1.3

PrimateAI

Pathogenic

0.88

PROVEAN

Benign

-1.3

REVEL

Uncertain

0.46

Sift

Uncertain

0.0040

Sift4G

Uncertain

0.0080

Polyphen

0.0

Vest4

0.30

MutPred

0.39

Gain of methylation at R6 (P = 0.0267);

MVP

0.95

MPC

0.28

ClinPred

0.88

GERP RS

2.6

PromoterAI

0.068

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.8

Varity_R

0.47

gMVP

0.67

Mutation Taster

=82/18

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over