chr20-31639092-A-C

Variant names:

• chr20-31639092-A-C
• rs762669070
• NM_032609.3:c.75A>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_032609.3(COX4I2):​c.75A>C​(p.Glu25Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000197 in 152,136 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: 𝑓 0.000020 (0 hom., cov: 31)
• Consequence: COX4I2 NM_032609.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.48
• Publications: 0 publications found

Genes affected

COX4I2 (HGNC:16232): (cytochrome c oxidase subunit 4I2) Cytochrome c oxidase (COX), the terminal enzyme of the mitochondrial respiratory chain, catalyzes the electron transfer from reduced cytochrome c to oxygen. It 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 be involved in the regulation and assembly of the complex. This nuclear gene encodes isoform 2 of subunit IV. Isoform 1 of subunit IV is encoded by a different gene, however, the two genes show a similar structural organization. Subunit IV is the largest nuclear encoded subunit which plays a pivotal role in COX regulation. [provided by RefSeq, Jul 2008]

COX4I2 Gene-Disease associations (from GenCC):

• pancreatic insufficiency-anemia-hyperostosis syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• mitochondrial disease

  Inheritance: AR Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.09605336).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_032609.3. 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
	COX4I2	NM_032609.3	MANE Select	c.75A>C	p.Glu25Asp	missense	Exon 2 of 5	NP_115998.2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	COX4I2	ENST00000376075.4	TSL:1 MANE Select	c.75A>C	p.Glu25Asp	missense	Exon 2 of 5	ENSP00000365243.3	Q96KJ9
	COX4I2	ENST00000948152.1		c.75A>C	p.Glu25Asp	missense	Exon 2 of 6	ENSP00000618211.1
	COX4I2	ENST00000890503.1		c.75A>C	p.Glu25Asp	missense	Exon 2 of 5	ENSP00000560562.1

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152136 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.0000724

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

GnomAD2 exomes AF: 0.00000410 AC: 1 AN: 243752 AF XY: 0.00000760

Gnomad AFR exome AF: 0.0000650

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 32

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152136 Hom.: 0 Cov.: 31 AF XY: 0.0000269 AC XY: 2 AN XY: 74306

African (AFR) AF: 0.0000724 AC: 3 AN: 41424

American (AMR) AF: 0.00 AC: 0 AN: 15282

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5188

South Asian (SAS) AF: 0.00 AC: 0 AN: 4818

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68010

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000227

ExAC AF: 0.00000824 AC: 1

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.087
BayesDel_addAF	Benign	-0.31	T
BayesDel_noAF	Benign	-0.50
CADD	Benign	15
DANN	Benign	0.50
DEOGEN2	Benign	0.0049	T
Eigen	Benign	-0.55
Eigen_PC	Benign	-0.48
FATHMM_MKL	Uncertain	0.76	D
LIST_S2	Benign	0.41	T
M_CAP	Benign	0.015	T
MetaRNN	Benign	0.096	T
MetaSVM	Benign	-0.99	T
MutationAssessor	Benign	0.34	N
PhyloP100		3.5
PrimateAI	Benign	0.34	T
PROVEAN	Benign	-0.64	N
REVEL	Benign	0.071
Sift	Benign	0.63	T
Sift4G	Benign	0.62	T
Polyphen		0.14	B
Vest4		0.11
MutPred		0.18		Loss of sheet (P = 0.0817)
MVP		0.81
MPC		0.13
ClinPred		0.074	T
GERP RS		2.9
Varity_R		0.079
gMVP		0.23
Mutation Taster		=97/3	polymorphism

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: rs762669070; hg19: chr20-30226895;