19-19516255-T-C

Position:

• chr19-19516255-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_015965.7(NDUFA13):​c.17T>C​(p.Val6Ala) variant causes a missense change. The variant allele was found at a frequency of 0.00000205 in 1,461,696 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: NDUFA13 NM_015965.7 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.40

Genes affected

NDUFA13 (HGNC:17194): (NADH:ubiquinone oxidoreductase subunit A13) This gene encodes a subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), which functions in the transfer of electrons from NADH to the respiratory chain. The protein is required for complex I assembly and electron transfer activity. The protein binds the signal transducers and activators of transcription 3 (STAT3) transcription factor, and can function as a tumor suppressor. The human protein purified from mitochondria migrates at approximately 16 kDa. Transcripts originating from an upstream promoter and capable of expressing a protein with a longer N-terminus have been found, but their biological validity has not been determined. [provided by RefSeq, Oct 2009]

ENSG00000258674 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.799

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NDUFA13	NM_015965.7	c.17T>C	p.Val6Ala	missense_variant	1/5	ENST00000507754.9	NP_057049.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NDUFA13	ENST00000507754.9	c.17T>C	p.Val6Ala	missense_variant	1/5	1	NM_015965.7	ENSP00000423673.1
ENSG00000258674	ENST00000555938.1	c.17T>C	p.Val6Ala	missense_variant	1/7	2		ENSP00000452549.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461696 Hom.: 0 Cov.: 32 AF XY: 0.00000413 AC XY: 3 AN XY: 727144

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: 0.0000232

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 12, 2021

The c.17T>C (p.V6A) alteration is located in exon 1 (coding exon 1) of the NDUFA13 gene. This alteration results from a T to C substitution at nucleotide position 17, causing the valine (V) at amino acid position 6 to be replaced by an alanine (A). 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	Pathogenic	0.60
BayesDel_addAF	Pathogenic	0.25	D
BayesDel_noAF	Uncertain	0.13
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Benign	0.34	T;T;.;.
Eigen	Pathogenic	0.69
Eigen_PC	Pathogenic	0.67
FATHMM_MKL	Benign	0.59	D
LIST_S2	Benign	0.81	T;T;T;T
M_CAP	Uncertain	0.18	D
MetaRNN	Pathogenic	0.80	D;D;D;D
MetaSVM	Uncertain	-0.070	T
MutationAssessor	Pathogenic	3.3	M;.;.;.
PROVEAN	Uncertain	-2.5	N;.;.;N
REVEL	Pathogenic	0.65
Sift	Uncertain	0.0030	D;.;.;D
Sift4G	Benign	0.14	T;D;T;T
Polyphen		1.0	D;.;.;.
Vest4		0.65
MutPred		0.63		Loss of catalytic residue at V6 (P = 0.0054);Loss of catalytic residue at V6 (P = 0.0054);Loss of catalytic residue at V6 (P = 0.0054);Loss of catalytic residue at V6 (P = 0.0054);
MVP		0.95
MPC		0.50
ClinPred		0.99	D
GERP RS		5.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.75
gMVP		0.89

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: rs200873378; hg19: chr19-19627064;