2-74135605-G-A

Position:

• chr2-74135605-G-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Moderate BP6_Moderate

The ENST00000295326.4(BOLA3):​c.223C>T​(p.Pro75Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 9/14 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: BOLA3 ENST00000295326.4 missense
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 2.08

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]

(HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.12103829).
• BP6: Variant 2-74135605-G-A is Benign according to our data. Variant chr2-74135605-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 2840587.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BOLA3	NM_212552.3	c.312C>T	p.Val104=	synonymous_variant	4/4	ENST00000327428.10	NP_997717.2
BOLA3	NM_001035505.2	c.223C>T	p.Pro75Ser	missense_variant	3/3		NP_001030582.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BOLA3	ENST00000327428.10	c.312C>T	p.Val104=	synonymous_variant	4/4	1	NM_212552.3	ENSP00000331369	P1
	ENST00000652224.1	n.482G>A		non_coding_transcript_exon_variant	2/2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 6.84e-7 AC: 1 AN: 1461810 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727204

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jun 09, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.20	D
BayesDel_noAF	Uncertain	0.040
CADD	Benign	16
DANN	Uncertain	0.99
Eigen	Benign	0.0017
Eigen_PC	Benign	0.10
FATHMM_MKL	Uncertain	0.76	D
LIST_S2	Benign	0.53	T
M_CAP	Benign	0.018	T
MetaRNN	Benign	0.12	T
MetaSVM	Benign	-1.0	T
MutationTaster	Benign	1.0	D;N
PROVEAN	Benign	0.44	N
REVEL	Benign	0.022
Sift	Pathogenic	0.0	D
Sift4G	Benign	0.39	T
Vest4		0.38
MutPred		0.43		Loss of loop (P = 0.0145);
MVP		0.36
ClinPred		0.65	D
GERP RS		4.2

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-74362732;