19-41419289-C-T

Position:

chr19-41419289-C-T

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BA1

The NM_000709.4(BCKDHA):c.639C>T(p.Ile213=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00343 in 1,613,130 control chromosomes in the GnomAD database, including 185 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.018 ( 97 hom., cov: 32)

Exomes 𝑓: 0.0019 ( 88 hom. )

Consequence

BCKDHA
NM_000709.4 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: 2.02

Variant links:

Genes affected

BCKDHA (HGNC:986): (branched chain keto acid dehydrogenase E1 subunit alpha) The branched-chain alpha-keto acid (BCAA) dehydrogenase (BCKD) complex is an innter mitochondrial enzyme complex that catalyzes the second major step in the catabolism of the branched-chain amino acids leucine, isoleucine, and valine. The BCKD complex consists of three catalytic components: a heterotetrameric (alpha2-beta2) branched-chain alpha-keto acid decarboxylase (E1), a dihydrolipoyl transacylase (E2), and a dihydrolipoamide dehydrogenase (E3). This gene encodes the alpha subunit of the decarboxylase (E1) component. Mutations in this gene result in maple syrup urine disease, type IA. Multiple transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Sep 2009]

BCKDHA links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -19 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.26).

BP6

Variant 19-41419289-C-T is Benign according to our data. Variant chr19-41419289-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 93366.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=2.02 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0602 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BCKDHA	NM_000709.4 linkuse as main transcript	c.639C>T	p.Ile213=	synonymous_variant	5/9	ENST00000269980.7	NP_000700.1
BCKDHA	NM_001164783.2 linkuse as main transcript	c.639C>T	p.Ile213=	synonymous_variant	5/9		NP_001158255.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BCKDHA	ENST00000269980.7 linkuse as main transcript	c.639C>T	p.Ile213=	synonymous_variant	5/9	1	NM_000709.4	ENSP00000269980	P1	P12694-1

Frequencies

GnomAD3 genomes

AF:

0.0179

AC:

2719

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0622

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00641

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000191

Gnomad OTH

AF:

0.0124

GnomAD3 exomes

AF:

0.00461

AC:

1148

AN:

248758

Hom.:

AF XY:

0.00341

AC XY:

459

AN XY:

134536

show subpopulations

Gnomad AFR exome

AF:

0.0635

Gnomad AMR exome

AF:

0.00286

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000231

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000169

Gnomad OTH exome

AF:

0.00230

GnomAD4 exome

AF:

0.00192

AC:

2808

AN:

1460824

Hom.:

Cov.:

AF XY:

0.00172

AC XY:

1249

AN XY:

726608

show subpopulations

Gnomad4 AFR exome

AF:

0.0687

Gnomad4 AMR exome

AF:

0.00312

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000774

Gnomad4 OTH exome

AF:

0.00394

GnomAD4 genome

AF:

0.0179

AC:

2725

AN:

152306

Hom.:

Cov.:

AF XY:

0.0168

AC XY:

1250

AN XY:

74464

show subpopulations

Gnomad4 AFR

AF:

0.0622

Gnomad4 AMR

AF:

0.00640

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000191

Gnomad4 OTH

AF:

0.0123

Alfa

AF:

0.00997

Hom.:

Bravo

AF:

0.0206

Asia WGS

AF:

0.00549

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

Benign, criteria provided, single submitter	clinical testing	GeneDx	Sep 04, 2014	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Aug 23, 2013	- -

Maple syrup urine disease

Benign:2

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 31, 2024	- -
Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Maple syrup urine disease type 1A

Benign:2

Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Sep 22, 2023	- -
Benign, no assertion criteria provided	clinical testing	Natera, Inc.	Sep 16, 2020	- -

not provided

Benign:1

Likely benign, criteria provided, single submitter

not provided

Breakthrough Genomics, Breakthrough Genomics

- -

BCKDHA-related disorder

Benign:1

Benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

May 16, 2020

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.26

CADD

Benign

DANN

Benign

0.84

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