dbSNP rs898043081: GCDH:p.Gln76Glu (chr19-12891929-C-G) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM1PM2

The NM_000159.4(GCDH):c.226C>G(p.Gln76Glu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,882 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q76P) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

GCDH
NM_000159.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.44

Publications

0 publications found

Variant links:

Genes affected

GCDH (HGNC:4189): (glutaryl-CoA dehydrogenase) The protein encoded by this gene belongs to the acyl-CoA dehydrogenase family. It catalyzes the oxidative decarboxylation of glutaryl-CoA to crotonyl-CoA and CO(2) in the degradative pathway of L-lysine, L-hydroxylysine, and L-tryptophan metabolism. It uses electron transfer flavoprotein as its electron acceptor. The enzyme exists in the mitochondrial matrix as a homotetramer of 45-kD subunits. Mutations in this gene result in the metabolic disorder glutaric aciduria type 1, which is also known as glutaric acidemia type I. Alternative splicing of this gene results in multiple transcript variants. A related pseudogene has been identified on chromosome 12. [provided by RefSeq, Mar 2013]

GCDH Gene-Disease associations (from GenCC):

glutaryl-CoA dehydrogenase deficiency
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Orphanet, G2P, Myriad Women’s Health

GCDH links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM1

In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 11 uncertain in NM_000159.4

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein
GCDH	NM_000159.4 link	c.226C>G	p.Gln76Glu	missense_variant	Exon 4 of 12	ENST00000222214.10	NP_000150.1
GCDH	NM_013976.5 link	c.226C>G	p.Gln76Glu	missense_variant	Exon 4 of 12		NP_039663.1
GCDH	NR_102316.1 link	n.334C>G		non_coding_transcript_exon_variant	Exon 4 of 12
GCDH	NR_102317.1 link	n.642C>G		non_coding_transcript_exon_variant	Exon 3 of 11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GCDH	ENST00000222214.10 link	c.226C>G	p.Gln76Glu	missense_variant	Exon 4 of 12	1	NM_000159.4	ENSP00000222214.4		Q92947-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251416

AF XY:

0.00000736

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461882

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727242

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1112000

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.092

BayesDel_addAF

Uncertain

0.14

BayesDel_noAF

Uncertain

0.050

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.91

D;.;D;D;D

Eigen

Benign

0.086

Eigen_PC

Uncertain

0.27

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.94

.;D;D;D;D

M_CAP

Uncertain

0.25

MetaRNN

Uncertain

0.45

T;T;T;T;T

MetaSVM

Pathogenic

0.99

MutationAssessor

Benign

0.91

L;.;L;.;.

PhyloP100

7.4

PrimateAI

Uncertain

0.49

PROVEAN

Uncertain

-2.4

N;.;.;.;.

REVEL

Uncertain

0.52

Sift

Benign

0.040

D;.;.;.;.

Sift4G

Benign

0.24

T;T;T;T;T

Polyphen

0.0020

B;.;B;.;.

Vest4

0.50

MutPred

0.42

Gain of phosphorylation at T73 (P = 0.1242);Gain of phosphorylation at T73 (P = 0.1242);Gain of phosphorylation at T73 (P = 0.1242);.;Gain of phosphorylation at T73 (P = 0.1242);

MVP

0.94

MPC

0.41

ClinPred

0.56

GERP RS

5.2

Varity_R

0.74

gMVP

0.68

Mutation Taster

=8/92

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over