1-39770352-T-C

Position:

chr1-39770352-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_022120.2(OXCT2):c.904A>G(p.Ile302Val) variant causes a missense change. The variant allele was found at a frequency of 0.0000188 in 1,593,348 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I302M) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000036 ( 0 hom., cov: 19)

Exomes 𝑓: 0.000017 ( 0 hom. )

Consequence

OXCT2
NM_022120.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.25

Variant links:

Genes affected

OXCT2 (HGNC:18606): (3-oxoacid CoA-transferase 2) The protein encoded by this gene catalyzes the transfer of a CoA group from succinate to acetoacetate and is an important enzyme in ketone body catabolism. The encoded protein localizes to the mitochondrion. This gene is intronless, and a pseudogene of this gene is located elsewhere on chromosome 1. [provided by RefSeq, Aug 2016]

OXCT2 links:

BMP8B (HGNC:1075): (bone morphogenetic protein 8b) This gene encodes a secreted ligand of the TGF-beta (transforming growth factor-beta) superfamily of proteins. Ligands of this family bind various TGF-beta receptors leading to recruitment and activation of SMAD family transcription factors that regulate gene expression. The encoded preproprotein is proteolytically processed to generate each subunit of the disulfide-linked homodimer. The encoded protein stimulates thermogenesis in brown adipose tissue. Expression of this gene may be downregulated in pancreatic cancer. This gene may have arose from a gene duplication event and its gene duplicate is also present on chromosome 1. [provided by RefSeq, Jul 2016]

BMP8B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.38537517).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OXCT2	NM_022120.2 linkuse as main transcript	c.904A>G	p.Ile302Val	missense_variant	1/1	ENST00000327582.5	NP_071403.1	Q9BYC2
BMP8B	NM_001720.5 linkuse as main transcript	c.673+3956A>G		intron_variant		ENST00000372827.8	NP_001711.2	P34820-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
OXCT2	ENST00000327582.5 linkuse as main transcript	c.904A>G	p.Ile302Val	missense_variant	1/1	6	NM_022120.2	ENSP00000361914.1		Q9BYC2
BMP8B	ENST00000372827.8 linkuse as main transcript	c.673+3956A>G		intron_variant		1	NM_001720.5	ENSP00000361915.3		P34820-1

Frequencies

GnomAD3 genomes

AF:

0.0000363

AC:

AN:

137748

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000692

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000610

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000527

AC:

AN:

246462

Hom.:

AF XY:

0.0000374

AC XY:

AN XY:

133622

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000714

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000172

AC:

AN:

1455600

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

723968

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000112

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:

0.0000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000363

AC:

AN:

137748

Hom.:

Cov.:

AF XY:

0.0000298

AC XY:

AN XY:

67154

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000692

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000610

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000144

Hom.:

ExAC

AF:

0.0000578

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 04, 2024

The c.904A>G (p.I302V) alteration is located in exon 1 (coding exon 1) of the OXCT2 gene. This alteration results from a A to G substitution at nucleotide position 904, causing the isoleucine (I) at amino acid position 302 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.31

BayesDel_addAF

Benign

-0.073

BayesDel_noAF

Benign

-0.090

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.42

Eigen

Benign

-0.14

Eigen_PC

Benign

-0.25

FATHMM_MKL

Uncertain

0.89

LIST_S2

Pathogenic

0.98

M_CAP

Pathogenic

0.32

MetaRNN

Benign

0.39

MetaSVM

Uncertain

0.65

MutationAssessor

Pathogenic

3.1

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-0.89

REVEL

Uncertain

0.41

Sift

Uncertain

0.015

Sift4G

Uncertain

0.030

Polyphen

0.58

Vest4

0.30

MutPred

0.46

Loss of loop (P = 0.1242);

MVP

0.64

ClinPred

0.59

GERP RS

2.6

Varity_R

0.22

gMVP

0.73

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over