6-80106696-G-A
Variant names:
Variant summary
Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PVS1_SupportingPM2PP5_Moderate
The NM_183050.4(BCKDHB):c.3G>A(p.Met1?) variant causes a start lost change. The variant allele was found at a frequency of 0.000000712 in 1,403,514 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 7.1e-7 ( 0 hom. )
Consequence
BCKDHB
NM_183050.4 start_lost
NM_183050.4 start_lost
Scores
6
4
6
Clinical Significance
Conservation
PhyloP100: 4.46
Genes affected
BCKDHB (HGNC:987): (branched chain keto acid dehydrogenase E1 subunit beta) This gene encodes the E1 beta subunit of branched-chain keto acid dehydrogenase, which is a multienzyme complex associated with the inner membrane of mitochondria. This enzyme complex functions in the catabolism of branched-chain amino acids. Mutations in this gene have been associated with maple syrup urine disease (MSUD), type 1B, a disease characterized by a maple syrup odor to the urine in addition to mental and physical retardation and feeding problems. Alternative splicing at this locus results in multiple transcript variants. [provided by RefSeq, Jan 2016]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 5 ACMG points.
PVS1
Start lost variant, no pathogenic variants between lost start and next in-frame start position. Next in-frame start position is after 210 CDS bases. Genomic position: 80127560. Lost 0.178 part of the original CDS.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 6-80106696-G-A is Pathogenic according to our data. Variant chr6-80106696-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 224057.Status of the report is criteria_provided_single_submitter, 1 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
BCKDHB | NM_183050.4 | c.3G>A | p.Met1? | start_lost | Exon 1 of 10 | ENST00000320393.9 | NP_898871.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
BCKDHB | ENST00000320393.9 | c.3G>A | p.Met1? | start_lost | Exon 1 of 10 | 1 | NM_183050.4 | ENSP00000318351.5 | ||
BCKDHB | ENST00000356489.9 | c.3G>A | p.Met1? | start_lost | Exon 1 of 11 | 1 | ENSP00000348880.5 | |||
BCKDHB | ENST00000369760.8 | c.3G>A | p.Met1? | start_lost | Exon 1 of 6 | 3 | ENSP00000358775.4 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 genomes
Cov.:
32
GnomAD4 exome AF: 7.12e-7 AC: 1AN: 1403514Hom.: 0 Cov.: 32 AF XY: 0.00000144 AC XY: 1AN XY: 692916
GnomAD4 exome
AF:
AC:
1
AN:
1403514
Hom.:
Cov.:
32
AF XY:
AC XY:
1
AN XY:
692916
Gnomad4 AFR exome
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GnomAD4 genome Cov.: 32
GnomAD4 genome
Cov.:
32
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Maple syrup urine disease Pathogenic:1
Jan 01, 2014
Institute of Medical Genetics and Genomics, Sir Ganga Ram Hospital
Significance: Pathogenic
Review Status: criteria provided, single submitter
Collection Method: research
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Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Benign
DANN
Uncertain
DEOGEN2
Benign
.;T;T
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Benign
D
LIST_S2
Uncertain
D;.;D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D;D;D
MetaSVM
Uncertain
D
PROVEAN
Benign
N;N;N
REVEL
Uncertain
Sift
Pathogenic
D;D;D
Sift4G
Pathogenic
D;D;D
Polyphen
0.12
.;B;B
Vest4
MutPred
Loss of solvent accessibility (P = 0.0155);Loss of solvent accessibility (P = 0.0155);Loss of solvent accessibility (P = 0.0155);
MVP
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at