12-4654857-C-A

Variant names:

• chr12-4654857-C-A
• rs71579253
• NM_005002.5:c.253C>A

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_005002.5(NDUFA9):​c.253C>A​(p.Arg85Arg) variant causes a synonymous change. The variant allele was found at a frequency of 0.000000684 in 1,461,542 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: NDUFA9 NM_005002.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.90
• Publications: 0 publications found

Genes affected

NDUFA9 (HGNC:7693): (NADH:ubiquinone oxidoreductase subunit A9) The encoded protein is a subunit of the hydrophobic protein fraction of the NADH:ubiquinone oxidoreductase (complex I), the first enzyme complex in the electron transport chain located in the inner mitochondrial membrane. A pseudogene has been identified on chromosome 12. [provided by RefSeq, May 2010]

NDUFA9 Gene-Disease associations (from GenCC):

• Leigh syndrome

  Inheritance: AR Classification: MODERATE, LIMITED Submitted by: ClinGen, G2P
• Leigh syndrome with leukodystrophy

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• mitochondrial complex I deficiency, nuclear type 26

  Inheritance: AR Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

ENSG00000255639 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.12).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NDUFA9	NM_005002.5	c.253C>A	p.Arg85Arg	synonymous_variant	Exon 3 of 11	ENST00000266544.10	NP_004993.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NDUFA9	ENST00000266544.10	c.253C>A	p.Arg85Arg	synonymous_variant	Exon 3 of 11	1	NM_005002.5	ENSP00000266544.5
ENSG00000255639	ENST00000648836.1	c.253C>A	p.Arg85Arg	synonymous_variant	Exon 3 of 15			ENSP00000497305.1
ENSG00000272921	ENST00000536588.1	n.*253C>A		non_coding_transcript_exon_variant	Exon 4 of 7	3		ENSP00000445121.1
ENSG00000272921	ENST00000536588.1	n.*253C>A		3_prime_UTR_variant	Exon 4 of 7	3		ENSP00000445121.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461542 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727080

African (AFR) AF: 0.00 AC: 0 AN: 33458

American (AMR) AF: 0.00 AC: 0 AN: 44682

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26126

East Asian (EAS) AF: 0.00 AC: 0 AN: 39696

South Asian (SAS) AF: 0.00 AC: 0 AN: 86206

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53414

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5752

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111820

Other (OTH) AF: 0.00 AC: 0 AN: 60388

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.12
CADD	Benign	12
DANN	Benign	0.79
PhyloP100		5.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs71579253; hg19: chr12-4764023;