5-41805667-C-G

Variant names:

• chr5-41805667-C-G
• NM_000436.4:c.855G>C
• OXCT1 p.Arg285Arg

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_000436.4(OXCT1):​c.855G>C​(p.Arg285Arg) variant causes a synonymous 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: OXCT1 NM_000436.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.968
• Publications: 0 publications found

Genes affected

OXCT1 (HGNC:8527): (3-oxoacid CoA-transferase 1) This gene encodes a member of the 3-oxoacid CoA-transferase gene family. The encoded protein is a homodimeric mitochondrial matrix enzyme that plays a central role in extrahepatic ketone body catabolism by catalyzing the reversible transfer of coenzyme A from succinyl-CoA to acetoacetate. Mutations in this gene are associated with succinyl CoA:3-oxoacid CoA transferase deficiency. [provided by RefSeq, Jul 2008]

OXCT1 Gene-Disease associations (from GenCC):

• succinyl-CoA:3-ketoacid CoA transferase deficiency

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Illumina, Ambry Genetics, G2P

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.32).
• BP7: Synonymous conserved (PhyloP=0.968 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000436.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OXCT1	NM_000436.4	MANE Select	c.855G>C	p.Arg285Arg	synonymous	Exon 9 of 17	NP_000427.1	P55809-1
	OXCT1	NM_001364299.2		c.876G>C	p.Arg292Arg	synonymous	Exon 10 of 18	NP_001351228.1
	OXCT1	NM_001364300.2		c.876G>C	p.Arg292Arg	synonymous	Exon 9 of 17	NP_001351229.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OXCT1	ENST00000196371.10	TSL:1 MANE Select	c.855G>C	p.Arg285Arg	synonymous	Exon 9 of 17	ENSP00000196371.5	P55809-1
	OXCT1	ENST00000972071.1		c.855G>C	p.Arg285Arg	synonymous	Exon 9 of 18	ENSP00000642130.1
	OXCT1	ENST00000919063.1		c.855G>C	p.Arg285Arg	synonymous	Exon 9 of 18	ENSP00000589122.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.32
CADD	Benign	7.9
DANN	Benign	0.71
PhyloP100		0.97

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr5-41805769;