5-53560667-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BS1_Supporting

The NM_002495.4(NDUFS4):c.5C>A(p.Ala2Glu) variant causes a missense change. The variant allele was found at a frequency of 0.000302 in 1,614,212 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: 𝑓 0.00021 (0 hom., cov: 33)
  • Exomes 𝑓: 0.00031 (0 hom.)
• Consequence: NDUFS4 NM_002495.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:3
• Conservation: PhyloP100: 3.73

Genes affected

NDUFS4 (HGNC:7711): (NADH:ubiquinone oxidoreductase subunit S4) This gene encodes an nuclear-encoded accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (complex I, or NADH:ubiquinone oxidoreductase). Complex I removes electrons from NADH and passes them to the electron acceptor ubiquinone. Mutations in this gene can cause mitochondrial complex I deficiencies such as Leigh syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2015]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00021 (32/152326) while in subpopulation NFE AF= 0.000397 (27/68034). AF 95% confidence interval is 0.00028. There are 0 homozygotes in gnomad4. There are 17 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NDUFS4	NM_002495.4	c.5C>A	p.Ala2Glu	missense_variant	1/5	ENST00000296684.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NDUFS4	ENST00000296684.10	c.5C>A	p.Ala2Glu	missense_variant	1/5	1	NM_002495.4	P1

Frequencies

GnomAD3 genomes AF: 0.000210 AC: 32 AN: 152208 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000482

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000654

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.000188

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000397

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000143 AC: 36 AN: 251460 Hom.: 0 AF XY: 0.000140 AC XY: 19 AN XY: 135898

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000173

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: 0.000255

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.000312 AC: 456 AN: 1461886 Hom.: 0 Cov.: 30 AF XY: 0.000308 AC XY: 224 AN XY: 727246

Gnomad4 AFR exome AF: 0.0000597

Gnomad4 AMR exome AF: 0.000112

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.0000374

Gnomad4 NFE exome AF: 0.000378

Gnomad4 OTH exome AF: 0.000447

GnomAD4 genome AF: 0.000210 AC: 32 AN: 152326 Hom.: 0 Cov.: 33 AF XY: 0.000228 AC XY: 17 AN XY: 74494

Gnomad4 AFR AF: 0.0000481

Gnomad4 AMR AF: 0.0000654

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.000188

Gnomad4 NFE AF: 0.000397

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000153 Hom.: 0

Bravo AF: 0.000174

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000349 AC: 3

ExAC AF: 0.000115 AC: 14

EpiCase AF: 0.000327

EpiControl AF: 0.000296

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Mitochondrial complex I deficiency, nuclear type 1 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Leigh syndrome Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Feb 02, 2022

In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.30
BayesDel_addAF	Uncertain	0.16	D
BayesDel_noAF	Pathogenic	0.32
Cadd	Pathogenic	29
Dann	Uncertain	1.0
DEOGEN2	Benign	0.15	T
Eigen	Pathogenic	0.72
Eigen_PC	Pathogenic	0.70
FATHMM_MKL	Uncertain	0.88	D
LIST_S2	Benign	0.73	T
M_CAP	Uncertain	0.16	D
MetaRNN	Uncertain	0.66	D
MetaSVM	Uncertain	0.025	D
MutationAssessor	Uncertain	2.1	M
MutationTaster	Benign	0.60	D
PrimateAI	Uncertain	0.72	T
PROVEAN	Benign	-1.2	N
REVEL	Benign	0.22
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.015	D
Polyphen		1.0	D
Vest4		0.61
MVP		0.71
MPC		0.21
ClinPred		0.31	T
GERP RS		5.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.0
Varity_R		0.77
gMVP		0.57

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: rs148595893; hg19: chr5-52856497;