rs10521253

Variant names:

• chr17-14074847-A-G
• rs10521253
• NM_001303.4:c.177+391A>G

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001303.4(COX10):​c.177+391A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.068 in 152,310 control chromosomes in the GnomAD database, including 395 homozygotes. 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: 𝑓 0.068 (395 hom., cov: 33)
• Consequence: COX10 NM_001303.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.993
• Publications: 5 publications found

Genes affected

COX10 (HGNC:2260): (cytochrome c oxidase assembly factor heme A:farnesyltransferase COX10) Cytochrome c oxidase (COX), the terminal component of the mitochondrial respiratory chain, catalyzes the electron transfer from reduced cytochrome c to oxygen. This component is a heteromeric complex consisting of 3 catalytic subunits encoded by mitochondrial genes and multiple structural subunits encoded by nuclear genes. The mitochondrially-encoded subunits function in electron transfer, and the nuclear-encoded subunits may function in the regulation and assembly of the complex. This nuclear gene encodes heme A:farnesyltransferase, which is not a structural subunit but required for the expression of functional COX and functions in the maturation of the heme A prosthetic group of COX. This protein is predicted to contain 7-9 transmembrane domains localized in the mitochondrial inner membrane. A gene mutation, which results in the substitution of a lysine for an asparagine (N204K), is identified to be responsible for cytochrome c oxidase deficiency. In addition, this gene is disrupted in patients with CMT1A (Charcot-Marie-Tooth type 1A) duplication and with HNPP (hereditary neuropathy with liability to pressure palsies) deletion. [provided by RefSeq, Jul 2008]

COX10 Gene-Disease associations (from GenCC):

• mitochondrial complex IV deficiency, nuclear type 3

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
• mitochondrial disease

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• Leigh syndrome

  Inheritance: AR Classification: MODERATE Submitted by: ClinGen
• cytochrome-c oxidase deficiency disease

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.67).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.0726 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
COX10	NM_001303.4	c.177+391A>G		intron_variant	Intron 2 of 6	ENST00000261643.8	NP_001294.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
COX10	ENST00000261643.8	c.177+391A>G		intron_variant	Intron 2 of 6	1	NM_001303.4	ENSP00000261643.3

Frequencies

GnomAD3 genomes AF: 0.0680 AC: 10347 AN: 152192 Hom.: 395 Cov.: 33

Gnomad AFR AF: 0.0627

Gnomad AMI AF: 0.0822

Gnomad AMR AF: 0.0623

Gnomad ASJ AF: 0.0646

Gnomad EAS AF: 0.00578

Gnomad SAS AF: 0.0397

Gnomad FIN AF: 0.0977

Gnomad MID AF: 0.0506

Gnomad NFE AF: 0.0743

Gnomad OTH AF: 0.0827

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0680 AC: 10352 AN: 152310 Hom.: 395 Cov.: 33 AF XY: 0.0681 AC XY: 5070 AN XY: 74472

African (AFR) AF: 0.0627 AC: 2605 AN: 41572

American (AMR) AF: 0.0622 AC: 951 AN: 15290

Ashkenazi Jewish (ASJ) AF: 0.0646 AC: 224 AN: 3470

East Asian (EAS) AF: 0.00579 AC: 30 AN: 5182

South Asian (SAS) AF: 0.0393 AC: 190 AN: 4834

European-Finnish (FIN) AF: 0.0977 AC: 1036 AN: 10604

Middle Eastern (MID) AF: 0.0510 AC: 15 AN: 294

European-Non Finnish (NFE) AF: 0.0743 AC: 5053 AN: 68038

Other (OTH) AF: 0.0818 AC: 173 AN: 2114

Alfa AF: 0.0697 Hom.: 208

Bravo AF: 0.0663

Asia WGS AF: 0.0380 AC: 134 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.67
CADD	Benign	12
DANN	Benign	0.87
PhyloP100		0.99
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs10521253; hg19: chr17-13978164;