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rs1193854555

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1PM2

The NM_001079866.2(BCS1L):c.814G>A(p.Val272Met) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000929 in 1,614,052 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. V272V) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

BCS1L
NM_001079866.2 missense

Scores

12
6

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.88
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 Uncertain_significance. Variant got 4 ACMG points.

PM1
In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 3 uncertain in NM_001079866.2
PM2
Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
BCS1LNM_001079866.2 linkuse as main transcriptc.814G>A p.Val272Met missense_variant 6/8 ENST00000359273.8

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
BCS1LENST00000359273.8 linkuse as main transcriptc.814G>A p.Val272Met missense_variant 6/81 NM_001079866.2 P1

Frequencies

GnomAD3 genomes
AF:
0.0000131
AC:
2
AN:
152174
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.000288
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000147
Gnomad OTH
AF:
0.00
GnomAD4 exome
AF:
0.00000889
AC:
13
AN:
1461878
Hom.:
0
Cov.:
32
AF XY:
0.00000825
AC XY:
6
AN XY:
727240
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000224
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000252
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000719
Gnomad4 OTH exome
AF:
0.0000497
GnomAD4 genome
AF:
0.0000131
AC:
2
AN:
152174
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74330
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.000288
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000147
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.0000189

ClinVar

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

Submissions by phenotype

Seizure;C1837397:Severe global developmental delay Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingCentre for Mendelian Genomics, University Medical Centre LjubljanaJan 01, 2017- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.18
BayesDel_addAF
Uncertain
0.16
D
BayesDel_noAF
Uncertain
-0.010
Cadd
Benign
23
Dann
Uncertain
1.0
DEOGEN2
Uncertain
0.44
T;T;T;T;T;T;T
Eigen
Uncertain
0.34
Eigen_PC
Uncertain
0.47
FATHMM_MKL
Uncertain
0.97
D
M_CAP
Uncertain
0.11
D
MetaRNN
Uncertain
0.44
T;T;T;T;T;T;T
MetaSVM
Uncertain
0.37
D
MutationAssessor
Benign
0.76
N;N;N;N;N;N;N
MutationTaster
Benign
1.0
D;D;D;D;D;D;D
PrimateAI
Uncertain
0.67
T
PROVEAN
Benign
-1.0
N;N;N;N;N;N;N
REVEL
Uncertain
0.43
Sift
Benign
0.15
T;T;T;T;T;T;T
Sift4G
Benign
0.13
T;T;T;T;T;T;T
Polyphen
0.52
P;P;P;P;P;P;P
Vest4
0.44
MutPred
0.27
Gain of disorder (P = 0.0769);Gain of disorder (P = 0.0769);Gain of disorder (P = 0.0769);Gain of disorder (P = 0.0769);Gain of disorder (P = 0.0769);Gain of disorder (P = 0.0769);Gain of disorder (P = 0.0769);
MVP
0.91
MPC
0.63
ClinPred
0.73
D
GERP RS
5.2
Varity_R
0.34
gMVP
0.72

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: rs1193854555; hg19: chr2-219527327; API