21-42903385-C-T

Variant names:

• chr21-42903385-C-T
• NM_021075.4:c.373C>T

Variant summary

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

The NM_021075.4(NDUFV3):​c.373C>T​(p.Pro125Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,894 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: NDUFV3 NM_021075.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.44

Genes affected

NDUFV3 (HGNC:7719): (NADH:ubiquinone oxidoreductase subunit V3) The protein encoded by this gene is one of at least forty-one subunits that make up the NADH-ubiquinone oxidoreductase complex. This complex is part of the mitochondrial respiratory chain and serves to catalyze the rotenone-sensitive oxidation of NADH and the reduction of ubiquinone. The encoded protein is one of three proteins found in the flavoprotein fraction of the complex. The specific function of the encoded protein is unknown. Two transcript variants encoding different isoforms have been found for this gene. [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
NDUFV3	NM_021075.4	c.373C>T	p.Pro125Ser	missense_variant	Exon 3 of 4	ENST00000354250.7	NP_066553.3
NDUFV3	XM_011529586.3	c.373C>T	p.Pro125Ser	missense_variant	Exon 3 of 5		XP_011527888.1
NDUFV3	NM_001001503.2	c.170-5479C>T		intron_variant	Intron 2 of 2		NP_001001503.1
NDUFV3	XM_017028359.2	c.170-3455C>T		intron_variant	Intron 2 of 3		XP_016883848.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NDUFV3	ENST00000354250.7	c.373C>T	p.Pro125Ser	missense_variant	Exon 3 of 4	1	NM_021075.4	ENSP00000346196.2
NDUFV3	ENST00000340344.4	c.170-5479C>T		intron_variant	Intron 2 of 2	1		ENSP00000342895.3
NDUFV3	ENST00000460259.1	n.896C>T		non_coding_transcript_exon_variant	Exon 5 of 6	2
NDUFV3	ENST00000460740.1	n.265C>T		non_coding_transcript_exon_variant	Exon 2 of 2	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461894 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727248

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: 0.00

Gnomad4 OTH exome AF: 0.0000331

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jan 20, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.373C>T (p.P125S) alteration is located in exon 3 (coding exon 3) of the NDUFV3 gene. This alteration results from a C to T substitution at nucleotide position 373, causing the proline (P) at amino acid position 125 to be replaced by a serine (S). 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
BayesDel_addAF	Benign	-0.027	T
BayesDel_noAF	Benign	-0.28
CADD	Pathogenic	28
DANN	Pathogenic	1.0
Eigen	Pathogenic	0.80
Eigen_PC	Pathogenic	0.79
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.79	T
M_CAP	Benign	0.033	D
MetaRNN	Uncertain	0.74	D
MetaSVM	Benign	-0.61	T
PrimateAI	Benign	0.41	T
PROVEAN	Pathogenic	-6.9	D
REVEL	Uncertain	0.35
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.60
MutPred		0.40		Gain of helix (P = 0.0225);
MVP		0.61
MPC		0.47
ClinPred		1.0	D
GERP RS		5.8
gMVP		0.23

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.30		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.30		Position offset: 26

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: chr21-44323495;