8-124539210-C-T

Position:

• chr8-124539210-C-T

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_Strong BP6_Very_Strong BP7 BS2

The NM_005005.3(NDUFB9):​c.24C>T​(p.Pro8=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00254 in 1,614,228 control chromosomes in the GnomAD database, including 8 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0025 (3 hom., cov: 33)
  • Exomes 𝑓: 0.0025 (5 hom.)
• Consequence: NDUFB9 NM_005005.3 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: -0.549

Genes affected

NDUFB9 (HGNC:7704): (NADH:ubiquinone oxidoreductase subunit B9) The protein encoded by this gene is a subunit of the mitochondrial oxidative phosphorylation complex I (nicotinamide adenine dinucleotide: ubiquinone oxidoreductase). Complex I is localized to the inner mitochondrial membrane and functions to dehydrogenate nicotinamide adenine dinucleotide and to shuttle electrons to coenzyme Q. Complex I deficiency is the most common defect found in oxidative phosphorylation disorders and results in a range of conditions, including lethal neonatal disease, hypertrophic cardiomyopathy, liver disease, and adult-onset neurodegenerative disorders. Pseudogenes of this gene are found on chromosomes five, seven and eight. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2015]

TATDN1 (HGNC:24220): (TatD DNase domain containing 1) Predicted to enable 3'-5'-exodeoxyribonuclease activity. Predicted to be involved in DNA metabolic process and nucleic acid phosphodiester bond hydrolysis. Located in nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Benign. Variant got -17 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.56).
• BP6: Variant 8-124539210-C-T is Benign according to our data. Variant chr8-124539210-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 138472.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-0.549 with no splicing effect.
• BS2: High Homozygotes in GnomAd4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NDUFB9	NM_005005.3	c.24C>T	p.Pro8=	synonymous_variant	1/4	ENST00000276689.8	NP_004996.1
NDUFB9	NM_001311168.2	c.24C>T	p.Pro8=	synonymous_variant	1/4		NP_001298097.1
NDUFB9	NM_001278645.2	c.-110C>T		5_prime_UTR_variant	1/4		NP_001265574.1
NDUFB9	NM_001278646.2	c.-104C>T		5_prime_UTR_variant	1/4		NP_001265575.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NDUFB9	ENST00000276689.8	c.24C>T	p.Pro8=	synonymous_variant	1/4	1	NM_005005.3	ENSP00000276689	P1

Frequencies

GnomAD3 genomes AF: 0.00248 AC: 377 AN: 152244 Hom.: 3 Cov.: 33

Gnomad AFR AF: 0.00251

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00569

Gnomad ASJ AF: 0.00288

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.000471

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.00241

Gnomad OTH AF: 0.00287

GnomAD3 exomes AF: 0.00199 AC: 500 AN: 251332 Hom.: 0 AF XY: 0.00197 AC XY: 268 AN XY: 135898

Gnomad AFR exome AF: 0.00296

Gnomad AMR exome AF: 0.00309

Gnomad ASJ exome AF: 0.00327

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.000831

Gnomad NFE exome AF: 0.00242

Gnomad OTH exome AF: 0.00310

GnomAD4 exome AF: 0.00255 AC: 3722 AN: 1461868 Hom.: 5 Cov.: 32 AF XY: 0.00246 AC XY: 1790 AN XY: 727236

Gnomad4 AFR exome AF: 0.00323

Gnomad4 AMR exome AF: 0.00300

Gnomad4 ASJ exome AF: 0.00283

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.000374

Gnomad4 NFE exome AF: 0.00289

Gnomad4 OTH exome AF: 0.00283

GnomAD4 genome AF: 0.00247 AC: 377 AN: 152360 Hom.: 3 Cov.: 33 AF XY: 0.00216 AC XY: 161 AN XY: 74510

Gnomad4 AFR AF: 0.00250

Gnomad4 AMR AF: 0.00568

Gnomad4 ASJ AF: 0.00288

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.000471

Gnomad4 NFE AF: 0.00241

Gnomad4 OTH AF: 0.00284

Alfa AF: 0.00215 Hom.: 0

Bravo AF: 0.00301

EpiCase AF: 0.00256

EpiControl AF: 0.00273

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:3

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 08, 2024	- -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Apr 01, 2024	NDUFB9: BP4, BP7, BS2 -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

not specified Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Apr 25, 2014

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Mitochondrial complex 1 deficiency, nuclear type 24 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Jan 17, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.56
CADD	Benign	8.1
DANN	Benign	0.86

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: rs147044660; hg19: chr8-125551451;