rs781627051

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM1PM2PP3_ModeratePP5_Moderate

The NM_001010867.4(IBA57):c.323A>C(p.Tyr108Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000394 in 1,521,786 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 Likely pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Y108C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 34)

Exomes 𝑓: 0.0000037 ( 0 hom. )

Consequence

IBA57
NM_001010867.4 missense

Scores

Clinical Significance

Likely pathogenic criteria provided, single submitter P:2

Conservation

PhyloP100: 0.482

Publications

5 publications found

Variant links:

Genes affected

IBA57 (HGNC:27302): (iron-sulfur cluster assembly factor IBA57) The protein encoded by this gene localizes to the mitochondrion and is part of the iron-sulfur cluster assembly pathway. The encoded protein functions late in the biosynthesis of mitochondrial 4Fe-4S proteins. Defects in this gene have been associated with autosomal recessive spastic paraplegia-74 and with multiple mitochondrial dysfunctions syndrome-3. Two transcript variants encoding different isoforms have been found for this gene. The smaller isoform is not likely to be localized to the mitochondrion since it lacks the amino-terminal transit peptide. [provided by RefSeq, Jul 2015]

IBA57 Gene-Disease associations (from GenCC):

mitochondrial disease
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
multiple mitochondrial dysfunctions syndrome 3
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Orphanet
hereditary spastic paraplegia 74
Inheritance: AR Classification: SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Orphanet

IBA57 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

PM1

In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 10 uncertain in NM_001010867.4

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.848

PP5

Variant 1-228166139-A-C is Pathogenic according to our data. Variant chr1-228166139-A-C is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 545652.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IBA57	NM_001010867.4 link	c.323A>C	p.Tyr108Ser	missense_variant	Exon 1 of 3	ENST00000366711.4	NP_001010867.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IBA57	ENST00000366711.4 link	c.323A>C	p.Tyr108Ser	missense_variant	Exon 1 of 3	2	NM_001010867.4	ENSP00000355672.3

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152024

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000194

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000365

AC:

AN:

1369762

Hom.:

Cov.:

AF XY:

0.00000444

AC XY:

AN XY:

676094

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

28926

American (AMR)

AF:

0.00

AC:

AN:

32090

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

23810

East Asian (EAS)

AF:

0.000119

AC:

AN:

33700

South Asian (SAS)

AF:

0.00

AC:

AN:

76296

European-Finnish (FIN)

AF:

0.00

AC:

AN:

44534

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5562

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1068118

Other (OTH)

AF:

0.0000176

AC:

AN:

56726

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152024

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74254

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41400

American (AMR)

AF:

0.00

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.000194

AC:

AN:

5158

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10590

Middle Eastern (MID)

AF:

0.00

AC:

AN:

312

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67972

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Multiple mitochondrial dysfunctions syndrome 3

Pathogenic:2

Jun 16, 2019

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.Tyr108Ser variant in IBA57 has been reported in 2 individuals with Multiple mitochondrial dysfunctions syndrome 3, including progressive cavitating leukoencephalopathy, who were compound heterozygous for loss of function variants in the IBA57 and segregated with disease in 1 affected individual (Ishiyama 2017). It was absent from large population studies. Computational prediction tools and conservation analyses do not provide strong support for or against an impact to the protein. In vitro functional studies provide some evidence that this variant impacts protein function (Ishiyama 2017); however, these types of assays may not accurately represent biological function. In summary, although additional studies are required to fully establish its clinical significance, this variant meets criteria to be classified as likely pathogenic for autosomal recessive Multiple mitochondrial dysfunctions syndrome 3. ACMG/AMP Criteria applied: PM3_Strong, PM2, PP1, PS3_Supporting. -

Jun 25, 2018

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.44

BayesDel_addAF

Pathogenic

0.28

BayesDel_noAF

Pathogenic

0.16

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.10

Eigen

Uncertain

0.34

Eigen_PC

Uncertain

0.25

FATHMM_MKL

Benign

0.086

LIST_S2

Uncertain

0.87

M_CAP

Pathogenic

0.83

MetaRNN

Pathogenic

0.85

MetaSVM

Uncertain

-0.12

MutationAssessor

Pathogenic

3.1

PhyloP100

0.48

PrimateAI

Pathogenic

0.84

PROVEAN

Pathogenic

-7.0

REVEL

Uncertain

0.61

Sift

Uncertain

0.0050

Sift4G

Pathogenic

0.0010

Polyphen

0.99

Vest4

0.56

MutPred

0.65

Loss of stability (P = 0.062);

MVP

0.83

MPC

1.1

ClinPred

0.99

GERP RS

4.3

PromoterAI

0.13

Neutral

(source)

Varity_R

0.91

gMVP

0.78

Mutation Taster

=25/75

disease causing (ClinVar)

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over