rs1555749853

Variant names:

• chr19-12893485-T-C
• rs1555749853
• NM_000159.4:c.337T>C

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PM1 PM2 PM5 PP3_Strong PP5_Very_Strong

The NM_000159.4(GCDH):​c.337T>C​(p.Tyr113His) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000137 in 1,461,538 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Y113C) has been classified as Likely pathogenic.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: GCDH NM_000159.4 missense, splice_region
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:3
• Conservation: PhyloP100: 4.72
• Publications: 0 publications found

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: Myriad Women’s Health, ClinGen, Orphanet, Labcorp Genetics (formerly Invitae), G2P, Genomics England PanelApp

ACMG classification

Our verdict: Pathogenic. The variant received 18 ACMG points.

• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 4 uncertain in NM_000159.4
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr19-12893486-A-G is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 1469596.Status of the report is criteria_provided_single_submitter, 1 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.975
• PP5: Variant 19-12893485-T-C is Pathogenic according to our data. Variant chr19-12893485-T-C is described in ClinVar as Pathogenic. ClinVar VariationId is 557526.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000159.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GCDH	NM_000159.4	MANE Select	c.337T>C	p.Tyr113His	missense splice_region	Exon 6 of 12	NP_000150.1	Q92947-1
	GCDH	NM_013976.5		c.337T>C	p.Tyr113His	missense splice_region	Exon 6 of 12	NP_039663.1	Q92947-2
	GCDH	NR_102316.1		n.500T>C		splice_region non_coding_transcript_exon	Exon 6 of 12

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GCDH	ENST00000222214.10	TSL:1 MANE Select	c.337T>C	p.Tyr113His	missense splice_region	Exon 6 of 12	ENSP00000222214.4	Q92947-1
	GCDH	ENST00000591470.5	TSL:1	c.337T>C	p.Tyr113His	missense splice_region	Exon 5 of 11	ENSP00000466845.1	Q92947-1
	GCDH	ENST00000590627.5	TSL:1	n.702T>C		splice_region non_coding_transcript_exon	Exon 5 of 5

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461538 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727108

African (AFR) AF: 0.00 AC: 0 AN: 33466

American (AMR) AF: 0.0000447 AC: 2 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111690

Other (OTH) AF: 0.00 AC: 0 AN: 60384

GnomAD4 genome Cov.: 31

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
3	-	-	Glutaric aciduria, type 1 (3)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.28
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.34
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.99	D
Eigen	Benign	0.17
Eigen_PC	Benign	0.22
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Pathogenic	0.85	D
MetaRNN	Pathogenic	0.97	D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Pathogenic	3.5	H
PhyloP100		4.7
PrimateAI	Pathogenic	0.79	T
PROVEAN	Pathogenic	-4.4	D
REVEL	Pathogenic	0.83
Sift	Uncertain	0.018	D
Sift4G	Uncertain	0.032	D
Polyphen		0.062	B
Vest4		0.69
MutPred		0.90		Gain of ubiquitination at K111 (P = 0.1204)
MVP		0.97
MPC		0.61
ClinPred		0.99	D
GERP RS		4.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.48
gMVP		0.89
Mutation Taster		=34/66	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs1555749853; hg19: chr19-13004299;