2-206123624-A-G

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_005006.7(NDUFS1):c.*561T>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00141 in 152,712 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0014 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0025 ( 0 hom. )

Consequence

NDUFS1
NM_005006.7 3_prime_UTR

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:2

Conservation

PhyloP100: 0.0800

Variant links:

Genes affected

NDUFS1 (HGNC:7707): (NADH:ubiquinone oxidoreductase core subunit S1) The protein encoded by this gene belongs to the complex I 75 kDa subunit family. Mammalian complex I is composed of 45 different subunits. It locates at the mitochondrial inner membrane. This protein has NADH dehydrogenase activity and oxidoreductase activity. It transfers electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone. This protein is the largest subunit of complex I and it is a component of the iron-sulfur (IP) fragment of the enzyme. It may form part of the active site crevice where NADH is oxidized. Mutations in this gene are associated with complex I deficiency. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2011]

NDUFS1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.9).

BS1

Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.00141 (215/152316) while in subpopulation AMR AF= 0.00431 (66/15296). AF 95% confidence interval is 0.00348. There are 0 homozygotes in gnomad4. There are 91 alleles in male gnomad4 subpopulation. Median coverage is 32. 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
NDUFS1	NM_005006.7 linkuse as main transcript	c.*561T>C		3_prime_UTR_variant	19/19	ENST00000233190.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NDUFS1	ENST00000233190.11 linkuse as main transcript	c.*561T>C		3_prime_UTR_variant	19/19	1	NM_005006.7	P1	P28331-1

Frequencies

GnomAD3 genomes

AF:

0.00141

AC:

215

AN:

152198

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000506

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00432

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.000188

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00166

Gnomad OTH

AF:

0.00574

GnomAD4 exome

AF:

0.00253

AC:

AN:

396

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

256

show subpopulations

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:

0.00307

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00141

AC:

215

AN:

152316

Hom.:

Cov.:

AF XY:

0.00122

AC XY:

AN XY:

74492

show subpopulations

Gnomad4 AFR

AF:

0.000505

Gnomad4 AMR

AF:

0.00431

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.000188

Gnomad4 NFE

AF:

0.00166

Gnomad4 OTH

AF:

0.00568

Alfa

AF:

0.00160

Hom.:

Bravo

AF:

0.00196

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Mitochondrial complex I deficiency, nuclear type 1

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Leigh syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.90

Cadd

Benign

1.4

Dann

Benign

0.69

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over