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GeneBe

19-48796507-G-T

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2BP4_StrongBP6_Moderate

The NM_001190.4(BCAT2):​c.1066-5C>A variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000131 in 1,612,658 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00013 ( 1 hom. )

Consequence

BCAT2
NM_001190.4 splice_region, splice_polypyrimidine_tract, intron

Scores

2
Splicing: ADA: 0.0004146
2

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.672
Variant links:
Genes affected
BCAT2 (HGNC:977): (branched chain amino acid transaminase 2) This gene encodes a branched chain aminotransferase found in mitochondria. The encoded protein forms a dimer that catalyzes the first step in the production of the branched chain amino acids leucine, isoleucine, and valine. 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 Likely_benign. Variant got -4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.83).
BP6
Variant 19-48796507-G-T is Benign according to our data. Variant chr19-48796507-G-T is described in ClinVar as [Benign]. Clinvar id is 2182022.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
BCAT2NM_001190.4 linkuse as main transcriptc.1066-5C>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant ENST00000316273.11
BCAT2NM_001164773.2 linkuse as main transcriptc.790-5C>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant
BCAT2NM_001284325.2 linkuse as main transcriptc.946-5C>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
BCAT2ENST00000316273.11 linkuse as main transcriptc.1066-5C>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant 1 NM_001190.4 P1O15382-1

Frequencies

GnomAD3 genomes
AF:
0.000145
AC:
22
AN:
152172
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00346
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000147
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000184
AC:
46
AN:
249624
Hom.:
0
AF XY:
0.000193
AC XY:
26
AN XY:
134988
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000290
Gnomad ASJ exome
AF:
0.00331
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000972
Gnomad OTH exome
AF:
0.000164
GnomAD4 exome
AF:
0.000129
AC:
189
AN:
1460486
Hom.:
1
Cov.:
33
AF XY:
0.000125
AC XY:
91
AN XY:
726580
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000448
Gnomad4 ASJ exome
AF:
0.00341
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000756
Gnomad4 OTH exome
AF:
0.000232
GnomAD4 genome
AF:
0.000145
AC:
22
AN:
152172
Hom.:
0
Cov.:
33
AF XY:
0.000148
AC XY:
11
AN XY:
74328
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00346
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000147
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000577
Hom.:
0
Bravo
AF:
0.000178
EpiCase
AF:
0.000491
EpiControl
AF:
0.000237

ClinVar

Significance: Benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Benign:1
Benign, criteria provided, single submitterclinical testingInvitaeOct 03, 2023- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.83
CADD
Benign
3.2
DANN
Benign
0.82

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.00041
dbscSNV1_RF
Benign
0.042
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: rs781275517; hg19: chr19-49299764; API