11-112064196-G-A

Position:

chr11-112064196-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001082619.2(PIH1D2):c.839C>T(p.Ala280Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000109 in 1,565,734 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/15 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000092 ( 1 hom. )

Consequence

PIH1D2
NM_001082619.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.27

Variant links:

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 links:

PIH1D2 (HGNC:25210): (PIH1 domain containing 2) Enables small GTPase binding activity. Predicted to be involved in box C/D snoRNP assembly and rRNA processing. Predicted to be part of R2TP complex and ribonucleoprotein complex. Predicted to be active in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

PIH1D2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.08384475).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DLAT	NM_001931.5 link	c.*1661G>A		3_prime_UTR_variant	14/14	ENST00000280346.11	NP_001922.2	P10515Q86YI5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DLAT	ENST00000280346.11 link	c.*1661G>A		3_prime_UTR_variant	14/14	1	NM_001931.5	ENSP00000280346.7		P10515

Frequencies

GnomAD3 genomes

AF:

0.0000264

AC:

AN:

151390

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000971

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000158

AC:

AN:

189392

Hom.:

AF XY:

0.00000986

AC XY:

AN XY:

101382

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000763

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000122

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000919

AC:

AN:

1414344

Hom.:

Cov.:

AF XY:

0.00000857

AC XY:

AN XY:

699940

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000108

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000262

Gnomad4 SAS exome

AF:

0.0000376

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000276

Gnomad4 OTH exome

AF:

0.0000342

GnomAD4 genome

AF:

0.0000264

AC:

AN:

151390

Hom.:

Cov.:

AF XY:

0.0000406

AC XY:

AN XY:

73900

show subpopulations

Gnomad4 AFR

AF:

0.0000971

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000189

ExAC

AF:

0.00000836

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 01, 2021

The c.839C>T (p.A280V) alteration is located in exon 6 (coding exon 5) of the PIH1D2 gene. This alteration results from a C to T substitution at nucleotide position 839, causing the alanine (A) at amino acid position 280 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.69

CADD

Benign

5.0

DANN

Benign

0.42

Eigen

Benign

-0.88

Eigen_PC

Benign

-0.72

FATHMM_MKL

Benign

0.67

LIST_S2

Benign

0.38

.;T

M_CAP

Benign

0.0072

MetaRNN

Benign

0.084

T;T

MetaSVM

Benign

-1.1

PROVEAN

Benign

-0.33

N;N

REVEL

Benign

0.017

Sift

Benign

0.81

T;T

Sift4G

Benign

0.13

T;T

Vest4

0.11

MutPred

0.44

Gain of methylation at K281 (P = 0.0385);Gain of methylation at K281 (P = 0.0385);

MVP

0.33

ClinPred

0.012

GERP RS

2.1

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over