chr1-39770306-T-C

Position:

chr1-39770306-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_022120.2(OXCT2):c.950A>G(p.Asn317Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000619 in 1,582,626 control chromosomes in the GnomAD database, including 1 homozygotes. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000075 ( 0 hom., cov: 18)

Exomes 𝑓: 0.000061 ( 1 hom. )

Consequence

OXCT2
NM_022120.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.32

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 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OXCT2	NM_022120.2 linkuse as main transcript	c.950A>G	p.Asn317Ser	missense_variant	1/1	ENST00000327582.5	NP_071403.1	Q9BYC2
BMP8B	NM_001720.5 linkuse as main transcript	c.673+4002A>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.950A>G	p.Asn317Ser	missense_variant	1/1	6	NM_022120.2	ENSP00000361914.1		Q9BYC2
BMP8B	ENST00000372827.8 linkuse as main transcript	c.673+4002A>G		intron_variant		1	NM_001720.5	ENSP00000361915.3		P34820-1

Frequencies

GnomAD3 genomes

AF:

0.0000749

AC:

AN:

133504

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000260

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000311

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000595

AC:

AN:

235308

Hom.:

AF XY:

0.0000469

AC XY:

AN XY:

127978

show subpopulations

Gnomad AFR exome

AF:

0.0000749

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000567

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000494

Gnomad NFE exome

AF:

0.000103

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000607

AC:

AN:

1449024

Hom.:

Cov.:

AF XY:

0.0000583

AC XY:

AN XY:

720458

show subpopulations

Gnomad4 AFR exome

AF:

0.000155

Gnomad4 AMR exome

AF:

0.0000225

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000255

Gnomad4 SAS exome

AF:

0.0000352

Gnomad4 FIN exome

AF:

0.0000191

Gnomad4 NFE exome

AF:

0.0000688

Gnomad4 OTH exome

AF:

0.0000167

GnomAD4 genome

AF:

0.0000748

AC:

AN:

133602

Hom.:

Cov.:

AF XY:

0.0000772

AC XY:

AN XY:

64746

show subpopulations

Gnomad4 AFR

AF:

0.000259

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000311

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

ESP6500AA

AF:

0.000241

AC:

ESP6500EA

AF:

0.000119

AC:

ExAC

AF:

0.0000580

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

Oct 20, 2024

The c.950A>G (p.N317S) 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 950, causing the asparagine (N) at amino acid position 317 to be replaced by a serine (S). 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

0.24

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.19

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.82

Eigen

Benign

-0.35

Eigen_PC

Benign

-0.55

FATHMM_MKL

Benign

0.56

LIST_S2

Uncertain

0.95

M_CAP

Uncertain

0.17

MetaRNN

Uncertain

0.56

MetaSVM

Uncertain

0.14

MutationAssessor

Pathogenic

4.5

PrimateAI

Benign

0.39

PROVEAN

Pathogenic

-4.8

REVEL

Uncertain

0.45

Sift

Uncertain

0.0080

Sift4G

Uncertain

0.0090

Polyphen

0.93

Vest4

0.29

MVP

0.92

ClinPred

0.81

GERP RS

-1.2

Varity_R

0.25

gMVP

0.85

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