2-74142024-A-T

Position:

• chr2-74142024-A-T

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_212552.3(BOLA3):​c.258+248T>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.623 in 152,210 control chromosomes in the GnomAD database, including 30,867 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency: Genomes: 𝑓 0.62 (30867 hom., cov: 33)
• Consequence: BOLA3 NM_212552.3 intron
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.976

Genes affected

BOLA3 (HGNC:24415): (bolA family member 3) This gene encodes a protein that plays an essential role in the production of iron-sulfur (Fe-S) clusters for the normal maturation of lipoate-containing 2-oxoacid dehydrogenases, and for the assembly of the mitochondrial respiratory chain complexes. Mutation in this gene has been associated with multiple mitochondrial dysfunctions syndrome-2. Two alternatively spliced transcript variants encoding different isoforms with distinct subcellular localization have been reported for this gene (PMID:21944046). [provided by RefSeq, Dec 2011]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.97).
• BP6: Variant 2-74142024-A-T is Benign according to our data. Variant chr2-74142024-A-T is described in ClinVar as [Benign]. Clinvar id is 683414.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.813 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BOLA3	NM_212552.3	c.258+248T>A		intron_variant		ENST00000327428.10
BOLA3	NM_001035505.2	c.169+3165T>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
BOLA3	ENST00000327428.10	c.258+248T>A		intron_variant		1	NM_212552.3	P1

Frequencies

GnomAD3 genomes AF: 0.623 AC: 94679 AN: 152092 Hom.: 30809 Cov.: 33

Gnomad AFR AF: 0.820

Gnomad AMI AF: 0.504

Gnomad AMR AF: 0.628

Gnomad ASJ AF: 0.518

Gnomad EAS AF: 0.613

Gnomad SAS AF: 0.377

Gnomad FIN AF: 0.598

Gnomad MID AF: 0.595

Gnomad NFE AF: 0.531

Gnomad OTH AF: 0.602

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.623 AC: 94792 AN: 152210 Hom.: 30867 Cov.: 33 AF XY: 0.621 AC XY: 46231 AN XY: 74420

Gnomad4 AFR AF: 0.820

Gnomad4 AMR AF: 0.628

Gnomad4 ASJ AF: 0.518

Gnomad4 EAS AF: 0.613

Gnomad4 SAS AF: 0.376

Gnomad4 FIN AF: 0.598

Gnomad4 NFE AF: 0.531

Gnomad4 OTH AF: 0.604

Alfa AF: 0.594 Hom.: 3460

Bravo AF: 0.641

Asia WGS AF: 0.514 AC: 1788 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Jun 14, 2018

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.97
CADD	Benign	1.0
DANN	Benign	0.81

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

Other links and lift over

dbSNP: rs702465; hg19: chr2-74369151;