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GeneBe

2-218660306-G-A

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_StrongBP6_ModerateBA1

The NM_001079866.2(BCS1L):c.-50+563G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0258 in 152,296 control chromosomes in the GnomAD database, including 162 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.026 ( 162 hom., cov: 32)
Exomes 𝑓: 0.0 ( 0 hom. )
Failed GnomAD Quality Control

Consequence

BCS1L
NM_001079866.2 intron

Scores

2
Splicing: ADA: 0.00003753
2

Clinical Significance

Benign criteria provided, single submitter B:2

Conservation

PhyloP100: 0.357
Variant links:
Genes affected
BCS1L (HGNC:1020): (BCS1 homolog, ubiquinol-cytochrome c reductase complex chaperone) This gene encodes a homolog of the S. cerevisiae bcs1 protein which is involved in the assembly of complex III of the mitochondrial respiratory chain. The encoded protein does not contain a mitochondrial targeting sequence but experimental studies confirm that it is imported into mitochondria. Mutations in this gene are associated with mitochondrial complex III deficiency and the GRACILE syndrome. Several alternatively spliced transcripts encoding two different isoforms have been described. [provided by RefSeq, Jan 2016]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.8).
BP6
Variant 2-218660306-G-A is Benign according to our data. Variant chr2-218660306-G-A is described in ClinVar as [Benign]. Clinvar id is 1259989.Status of the report is criteria_provided_single_submitter, 1 stars.
BA1
GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0878 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
BCS1LNM_001079866.2 linkuse as main transcriptc.-50+563G>A intron_variant ENST00000359273.8

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
BCS1LENST00000359273.8 linkuse as main transcriptc.-50+563G>A intron_variant 1 NM_001079866.2 P1

Frequencies

GnomAD3 genomes
AF:
0.0258
AC:
3930
AN:
152178
Hom.:
162
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0905
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00746
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.0127
Gnomad NFE
AF:
0.000250
Gnomad OTH
AF:
0.0230
GnomAD4 exome
Data not reliable, filtered out with message: AC0
AF:
0.00
AC:
0
AN:
910
Hom.:
0
Cov.:
0
AF XY:
0.00
AC XY:
0
AN XY:
506
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0258
AC:
3930
AN:
152296
Hom.:
162
Cov.:
32
AF XY:
0.0251
AC XY:
1867
AN XY:
74472
show subpopulations
Gnomad4 AFR
AF:
0.0902
Gnomad4 AMR
AF:
0.00738
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000250
Gnomad4 OTH
AF:
0.0227
Alfa
AF:
0.0218
Hom.:
8
Bravo
AF:
0.0293
Asia WGS
AF:
0.00491
AC:
17
AN:
3478

ClinVar

Significance: Benign
Submissions summary: Benign:2
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

GRACILE syndrome Benign:1
Benign, no assertion criteria providedclinical testingNatera, Inc.Nov 11, 2019- -
not provided Benign:1
Benign, criteria provided, single submitterclinical testingGeneDxJul 09, 2018- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.80
CADD
Benign
5.9
DANN
Benign
0.51

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.000038
dbscSNV1_RF
Benign
0.012
SpliceAI score (max)
0.070
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: rs77595651; hg19: chr2-219525029; API