rs3217385

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP6_Very_StrongBA1

The NM_000709.4(BCKDHA):​c.996-33dup variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.61 in 1,596,250 control chromosomes in the GnomAD database, including 301,111 homozygotes. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.66 ( 33815 hom., cov: 0)
Exomes 𝑓: 0.61 ( 267296 hom. )

Consequence

BCKDHA
NM_000709.4 intron

Scores

Not classified

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: -0.230
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]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -16 ACMG points.

BP6
Variant 19-41422962-G-GC is Benign according to our data. Variant chr19-41422962-G-GC is described in ClinVar as [Likely_benign]. Clinvar id is 93389.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BA1
GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.813 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
BCKDHANM_000709.4 linkuse as main transcriptc.996-33dup intron_variant ENST00000269980.7
BCKDHANM_001164783.2 linkuse as main transcriptc.993-33dup intron_variant

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
BCKDHAENST00000269980.7 linkuse as main transcriptc.996-33dup intron_variant 1 NM_000709.4 P1P12694-1
BCKDHAENST00000457836.6 linkuse as main transcriptc.972dup p.Thr325HisfsTer19 frameshift_variant 8/92 P12694-2
BCKDHAENST00000542943.5 linkuse as main transcriptc.909-33dup intron_variant 5

Frequencies

GnomAD3 genomes
AF:
0.656
AC:
99667
AN:
151840
Hom.:
33773
Cov.:
0
show subpopulations
Gnomad AFR
AF:
0.820
Gnomad AMI
AF:
0.770
Gnomad AMR
AF:
0.560
Gnomad ASJ
AF:
0.627
Gnomad EAS
AF:
0.432
Gnomad SAS
AF:
0.588
Gnomad FIN
AF:
0.660
Gnomad MID
AF:
0.636
Gnomad NFE
AF:
0.600
Gnomad OTH
AF:
0.638
GnomAD3 exomes
AF:
0.590
AC:
129959
AN:
220434
Hom.:
39155
AF XY:
0.589
AC XY:
70189
AN XY:
119194
show subpopulations
Gnomad AFR exome
AF:
0.823
Gnomad AMR exome
AF:
0.479
Gnomad ASJ exome
AF:
0.624
Gnomad EAS exome
AF:
0.425
Gnomad SAS exome
AF:
0.586
Gnomad FIN exome
AF:
0.657
Gnomad NFE exome
AF:
0.604
Gnomad OTH exome
AF:
0.607
GnomAD4 exome
AF:
0.606
AC:
874637
AN:
1444292
Hom.:
267296
Cov.:
36
AF XY:
0.604
AC XY:
433268
AN XY:
716882
show subpopulations
Gnomad4 AFR exome
AF:
0.832
Gnomad4 AMR exome
AF:
0.483
Gnomad4 ASJ exome
AF:
0.623
Gnomad4 EAS exome
AF:
0.458
Gnomad4 SAS exome
AF:
0.581
Gnomad4 FIN exome
AF:
0.654
Gnomad4 NFE exome
AF:
0.607
Gnomad4 OTH exome
AF:
0.613
GnomAD4 genome
AF:
0.657
AC:
99762
AN:
151958
Hom.:
33815
Cov.:
0
AF XY:
0.654
AC XY:
48545
AN XY:
74270
show subpopulations
Gnomad4 AFR
AF:
0.821
Gnomad4 AMR
AF:
0.560
Gnomad4 ASJ
AF:
0.627
Gnomad4 EAS
AF:
0.433
Gnomad4 SAS
AF:
0.587
Gnomad4 FIN
AF:
0.660
Gnomad4 NFE
AF:
0.600
Gnomad4 OTH
AF:
0.638
Alfa
AF:
0.624
Hom.:
5474
Bravo
AF:
0.656

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:2
Benign, criteria provided, single submitterclinical testingEurofins Ntd Llc (ga)Aug 23, 2013- -
Likely benign, criteria provided, single submitterclinical testingPreventionGenetics, part of Exact Sciences-- -
Maple syrup urine disease Benign:1
Benign, criteria provided, single submitterclinical testingGenome-Nilou LabJul 14, 2021- -
not provided Benign:1
Benign, criteria provided, single submitterclinical testingGeneDxMar 03, 2015- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

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.

Other links and lift over

dbSNP: rs3217385; hg19: chr19-41928867; API