9-6554674-G-C

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM1PM2PP3

The NM_000170.3(GLDC):c.2310C>G(p.Ile770Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000687 in 1,455,194 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. I770I) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

GLDC
NM_000170.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.491

Publications

0 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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

PM1

In a hotspot region, there are 12 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 10 uncertain in NM_000170.3

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.791

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000170.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GLDC	NM_000170.3	MANE Select	c.2310C>G	p.Ile770Met	missense	Exon 19 of 25	NP_000161.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
GLDC	ENST00000321612.8	TSL:1 MANE Select	c.2310C>G	p.Ile770Met	missense	Exon 19 of 25	ENSP00000370737.4
GLDC	ENST00000638233.1	TSL:1	n.745C>G		non_coding_transcript_exon	Exon 5 of 11
GLDC	ENST00000639443.1	TSL:1	n.1878C>G		non_coding_transcript_exon	Exon 15 of 21

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000401

AC:

AN:

249682

AF XY:

0.00000741

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000545

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.87e-7

AC:

AN:

1455194

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

724082

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33352

American (AMR)

AF:

0.00

AC:

AN:

44620

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26090

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39662

South Asian (SAS)

AF:

0.00

AC:

AN:

85738

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53382

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4312

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1107962

Other (OTH)

AF:

0.00

AC:

AN:

60076

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.675

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

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.30

BayesDel_addAF

Pathogenic

0.20

BayesDel_noAF

Pathogenic

0.22

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.71

Eigen

Benign

-0.18

Eigen_PC

Benign

-0.49

FATHMM_MKL

Benign

0.24

LIST_S2

Pathogenic

0.99

M_CAP

Pathogenic

0.80

MetaRNN

Pathogenic

0.79

MetaSVM

Pathogenic

0.83

MutationAssessor

Pathogenic

4.3

PhyloP100

-0.49

PrimateAI

Uncertain

0.57

PROVEAN

Uncertain

-2.8

REVEL

Pathogenic

0.70

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.84

MutPred

0.65

Gain of disorder (P = 0.0234)

MVP

0.97

MPC

0.28

ClinPred

1.0

GERP RS

-7.8

PromoterAI

-0.046

Neutral

(source)

Varity_R

0.90

gMVP

0.92

Mutation Taster

=37/63

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.23

Details are displayed if max score is > 0.2

DS_DL_spliceai

0.23

Position offset: -5

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over