9-128819033-G-C

Variant names:

• chr9-128819033-G-C
• NM_004435.2:c.349G>C

Variant summary

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

The NM_004435.2(ENDOG):​c.349G>C​(p.Glu117Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000372 in 1,343,996 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000037 (0 hom.)
• Consequence: ENDOG NM_004435.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.33

Genes affected

ENDOG (HGNC:3346): (endonuclease G) The protein encoded by this gene is a nuclear encoded endonuclease that is localized in the mitochondrion. The encoded protein is widely distributed among animals and cleaves DNA at GC tracts. This protein is capable of generating the RNA primers required by DNA polymerase gamma to initiate replication of mitochondrial DNA. [provided by RefSeq, Jul 2008]

ACMG classification

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
ENDOG	NM_004435.2	c.349G>C	p.Glu117Gln	missense_variant	Exon 1 of 3	ENST00000372642.5	NP_004426.2
ENDOG	XM_011518347.3	c.349G>C	p.Glu117Gln	missense_variant	Exon 1 of 4		XP_011516649.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ENDOG	ENST00000372642.5	c.349G>C	p.Glu117Gln	missense_variant	Exon 1 of 3	1	NM_004435.2	ENSP00000361725.4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000372 AC: 5 AN: 1343996 Hom.: 0 Cov.: 33 AF XY: 0.00000302 AC XY: 2 AN XY: 662098

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 0.00000471

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Dec 22, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.349G>C (p.E117Q) alteration is located in exon 1 (coding exon 1) of the ENDOG gene. This alteration results from a G to C substitution at nucleotide position 349, causing the glutamic acid (E) at amino acid position 117 to be replaced by a glutamine (Q). 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	0.34
BayesDel_addAF	Uncertain	0.094	D
BayesDel_noAF	Benign	-0.10
CADD	Pathogenic	30
DANN	Uncertain	1.0
DEOGEN2	Benign	0.20	T
Eigen	Uncertain	0.58
Eigen_PC	Uncertain	0.52
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.94	D
M_CAP	Pathogenic	0.87	D
MetaRNN	Uncertain	0.56	D
MetaSVM	Uncertain	-0.22	T
MutationAssessor	Uncertain	2.7	M
PrimateAI	Pathogenic	0.93	D
PROVEAN	Benign	-1.4	N
REVEL	Uncertain	0.36
Sift	Benign	0.20	T
Sift4G	Benign	0.12	T
Polyphen		0.95	P
Vest4		0.39
MutPred		0.51		Loss of stability (P = 0.1679);
MVP		0.84
MPC		1.0
ClinPred		0.98	D
GERP RS		4.1
Varity_R		0.49
gMVP		0.54

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr9-131581312;