rs778284446
Positions:
Variant summary
Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate
The NM_001010867.4(IBA57):āc.206T>Cā(p.Phe69Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000293 in 1,533,784 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 Uncertain significance (ā ).
Frequency
Genomes: š 0.000020 ( 0 hom., cov: 34)
Exomes š: 0.000030 ( 0 hom. )
Consequence
IBA57
NM_001010867.4 missense
NM_001010867.4 missense
Scores
9
7
3
Clinical Significance
Conservation
PhyloP100: 1.33
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]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 4 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.923
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
IBA57 | NM_001010867.4 | c.206T>C | p.Phe69Ser | missense_variant | 1/3 | ENST00000366711.4 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
IBA57 | ENST00000366711.4 | c.206T>C | p.Phe69Ser | missense_variant | 1/3 | 2 | NM_001010867.4 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.0000197 AC: 3AN: 152164Hom.: 0 Cov.: 34
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GnomAD4 exome AF: 0.0000304 AC: 42AN: 1381620Hom.: 0 Cov.: 33 AF XY: 0.0000278 AC XY: 19AN XY: 682332
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GnomAD4 genome ? AF: 0.0000197 AC: 3AN: 152164Hom.: 0 Cov.: 34 AF XY: 0.0000135 AC XY: 1AN XY: 74324
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Multiple mitochondrial dysfunctions syndrome 3;C5568837:Hereditary spastic paraplegia 74 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Nov 05, 2021 | In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). ClinVar contains an entry for this variant (Variation ID: 541312). This variant has not been reported in the literature in individuals affected with IBA57-related conditions. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This sequence change replaces phenylalanine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 69 of the IBA57 protein (p.Phe69Ser). - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
DEOGEN2
Uncertain
T
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Benign
N
LIST_S2
Benign
T
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D
MetaSVM
Uncertain
D
MutationAssessor
Pathogenic
H
MutationTaster
Benign
D
PrimateAI
Pathogenic
D
PROVEAN
Pathogenic
D
REVEL
Pathogenic
Sift
Uncertain
D
Sift4G
Uncertain
D
Polyphen
D
Vest4
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at