3-49022497-G-A

Position:

• chr3-49022497-G-A

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_199069.2(NDUFAF3):​c.229G>A​(p.Gly77Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic 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: NDUFAF3 NM_199069.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 9.38

Genes affected

NDUFAF3 (HGNC:29918): (NADH:ubiquinone oxidoreductase complex assembly factor 3) This gene encodes a mitochondrial complex I assembly protein that interacts with complex I subunits. Mutations in this gene cause mitochondrial complex I deficiency, a fatal neonatal disorder of the oxidative phosphorylation system. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Jul 2009]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.977

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NDUFAF3	NM_199069.2	c.229G>A	p.Gly77Ser	missense_variant	2/5	ENST00000326925.11	NP_951032.1
NDUFAF3	NM_199070.2	c.58G>A	p.Gly20Ser	missense_variant	2/5		NP_951033.1
NDUFAF3	NM_199073.2	c.58G>A	p.Gly20Ser	missense_variant	2/5		NP_951047.1
NDUFAF3	NM_199074.2	c.58G>A	p.Gly20Ser	missense_variant	2/5		NP_951056.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NDUFAF3	ENST00000326925.11	c.229G>A	p.Gly77Ser	missense_variant	2/5	1	NM_199069.2	ENSP00000323076	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000401 AC: 1 AN: 249132 Hom.: 0 AF XY: 0.00000739 AC XY: 1 AN XY: 135286

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000892

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.75
BayesDel_addAF	Uncertain	0.15	D
BayesDel_noAF	Uncertain	-0.020
CADD	Pathogenic	30
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.59	.;D;.;.
Eigen	Uncertain	0.63
Eigen_PC	Uncertain	0.51
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Uncertain	0.93	.;D;.;D
M_CAP	Pathogenic	0.45	D
MetaRNN	Pathogenic	0.98	D;D;D;D
MetaSVM	Uncertain	0.43	D
MutationAssessor	Pathogenic	3.0	.;M;.;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.68	T
PROVEAN	Pathogenic	-5.5	D;D;D;D
REVEL	Pathogenic	0.65
Sift	Pathogenic	0.0	D;D;D;D
Sift4G	Pathogenic	0.0	D;D;D;D
Polyphen		1.0	.;D;.;.
Vest4		0.91
MutPred		0.86		.;Loss of methylation at R74 (P = 0.1014);.;.;
MVP		0.89
MPC		1.4
ClinPred		1.0	D
GERP RS		4.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.88
gMVP		0.84

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

Other links and lift over

dbSNP: rs121918134; hg19: chr3-49059930;