rs797044957

Variant names:

• chr11-112028603-T-G
• rs797044957
• NM_001931.5:c.470T>G

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PP3_Moderate PP5

The NM_001931.5(DLAT):​c.470T>G​(p.Val157Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: DLAT NM_001931.5 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:3 U:1
• Conservation: PhyloP100: 7.58
• Publications: 2 publications found

Genes affected

DLAT (HGNC:2896): (dihydrolipoamide S-acetyltransferase) This gene encodes component E2 of the multi-enzyme pyruvate dehydrogenase complex (PDC). PDC resides in the inner mitochondrial membrane and catalyzes the conversion of pyruvate to acetyl coenzyme A. The protein product of this gene, dihydrolipoamide acetyltransferase, accepts acetyl groups formed by the oxidative decarboxylation of pyruvate and transfers them to coenzyme A. Dihydrolipoamide acetyltransferase is the antigen for antimitochondrial antibodies. These autoantibodies are present in nearly 95% of patients with the autoimmune liver disease primary biliary cirrhosis (PBC). In PBC, activated T lymphocytes attack and destroy epithelial cells in the bile duct where this protein is abnormally distributed and overexpressed. PBC enventually leads to cirrhosis and liver failure. Mutations in this gene are also a cause of pyruvate dehydrogenase E2 deficiency which causes primary lactic acidosis in infancy and early childhood.[provided by RefSeq, Oct 2009]

DLAT Gene-Disease associations (from GenCC):

• pyruvate dehydrogenase E2 deficiency

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: G2P, Orphanet, Genomics England PanelApp, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• Leigh syndrome

  Inheritance: AR Classification: MODERATE Submitted by: ClinGen

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.903
• PP5: Variant 11-112028603-T-G is Pathogenic according to our data. Variant chr11-112028603-T-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 208790.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001931.5. 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
	DLAT	NM_001931.5	MANE Select	c.470T>G	p.Val157Gly	missense	Exon 3 of 14	NP_001922.2
	DLAT	NM_001372031.1		c.470T>G	p.Val157Gly	missense	Exon 3 of 14	NP_001358960.1
	DLAT	NM_001372032.1		c.470T>G	p.Val157Gly	missense	Exon 3 of 14	NP_001358961.1	A0A7P0TBE2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DLAT	ENST00000280346.11	TSL:1 MANE Select	c.470T>G	p.Val157Gly	missense	Exon 3 of 14	ENSP00000280346.7	P10515
	DLAT	ENST00000915657.1		c.470T>G	p.Val157Gly	missense	Exon 3 of 14	ENSP00000585716.1
	DLAT	ENST00000713569.1		c.470T>G	p.Val157Gly	missense	Exon 3 of 14	ENSP00000518862.1	P10515

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
2	-	-	Pyruvate dehydrogenase E2 deficiency (2)
1	-	-	Inborn genetic diseases (1)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.95
BayesDel_addAF	Pathogenic	0.27	D
BayesDel_noAF	Pathogenic	0.16
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.54	D
Eigen	Pathogenic	0.93
Eigen_PC	Pathogenic	0.84
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.88	D
M_CAP	Uncertain	0.27	D
MetaRNN	Pathogenic	0.90	D
MetaSVM	Uncertain	0.61	D
MutationAssessor	Pathogenic	3.5	M
PhyloP100		7.6
PrimateAI	Benign	0.48	T
PROVEAN	Uncertain	-3.9	D
REVEL	Pathogenic	0.87
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0020	D
Polyphen		1.0	D
Vest4		0.68
MutPred		0.76		Loss of sheet (P = 0.0181)
MVP		0.93
MPC		1.1
ClinPred		1.0	D
GERP RS		5.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.88
gMVP		0.92
Mutation Taster		=5/95	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: rs797044957; hg19: chr11-111899327;