NM_022120.2:c.1387G>C

Variant names:

Variant summary

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

The NM_022120.2(OXCT2):c.1387G>C(p.Val463Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000266 in 150,432 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., cov: 21)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

OXCT2
NM_022120.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.00

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 rank	MANE	Protein	UniProt
OXCT2	NM_022120.2 link	c.1387G>C	p.Val463Leu	missense_variant	Exon 1 of 1	ENST00000327582.5	NP_071403.1	Q9BYC2
BMP8B	NM_001720.5 link	c.673+4439G>C		intron_variant	Intron 3 of 6	ENST00000372827.8	NP_001711.2	P34820-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OXCT2	ENST00000327582.5 link	c.1387G>C	p.Val463Leu	missense_variant	Exon 1 of 1	6	NM_022120.2	ENSP00000361914.1		Q9BYC2
BMP8B	ENST00000372827.8 link	c.673+4439G>C		intron_variant	Intron 3 of 6	1	NM_001720.5	ENSP00000361915.3		P34820-1

Frequencies

GnomAD3 genomes

AF:

0.0000266

AC:

AN:

150314

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000985

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000160

AC:

AN:

249672

Hom.:

AF XY:

0.00000740

AC XY:

AN XY:

135092

show subpopulations

Gnomad AFR exome

AF:

0.000126

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000328

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.00000411

AC:

AN:

1460670

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726648

show subpopulations

Gnomad4 AFR exome

AF:

0.0000599

Gnomad4 AMR exome

AF:

0.0000448

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:

9.00e-7

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000266

AC:

AN:

150432

Hom.:

Cov.:

AF XY:

0.0000408

AC XY:

AN XY:

73452

show subpopulations

Gnomad4 AFR

AF:

0.0000982

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:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000453

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 28, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1387G>C (p.V463L) alteration is located in exon 1 (coding exon 1) of the OXCT2 gene. This alteration results from a G to C substitution at nucleotide position 1387, causing the valine (V) at amino acid position 463 to be replaced by a leucine (L). 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

Pathogenic

0.78

BayesDel_addAF

Benign

-0.075

BayesDel_noAF

Benign

-0.11

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.75

Eigen

Benign

-0.12

Eigen_PC

Benign

-0.30

FATHMM_MKL

Uncertain

0.87

LIST_S2

Pathogenic

0.99

M_CAP

Uncertain

0.21

MetaRNN

Uncertain

0.57

MetaSVM

Uncertain

0.47

MutationAssessor

Pathogenic

3.9

PrimateAI

Benign

0.38

PROVEAN

Uncertain

-2.8

REVEL

Uncertain

0.51

Sift

Uncertain

0.012

Sift4G

Uncertain

0.022

Polyphen

1.0

Vest4

0.36

MutPred

0.63

Gain of catalytic residue at V463 (P = 0.0013);

MVP

0.93

ClinPred

0.99

GERP RS

1.6

Varity_R

0.45

gMVP

0.76

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