6-96897795-C-G

Position:

• chr6-96897795-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2 PP3_Moderate PP5

The NM_014165.4(NDUFAF4):​c.7G>C​(p.Ala3Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,818 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 Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: NDUFAF4 NM_014165.4 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:2 U:1
• Conservation: PhyloP100: 1.97

Genes affected

NDUFAF4 (HGNC:21034): (NADH:ubiquinone oxidoreductase complex assembly factor 4) NADH:ubiquinone oxidoreductase (complex I) catalyzes the transfer of electrons from NADH to ubiquinone (coenzyme Q) in the first step of the mitochondrial respiratory chain, resulting in the translocation of protons across the inner mitochondrial membrane. This gene encodes a complex I assembly factor. Mutations in this gene are a cause of mitochondrial complex I deficiency. [provided by RefSeq, Oct 2009]

NDUFAF4 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.905
• PP5: Variant 6-96897795-C-G is Pathogenic according to our data. Variant chr6-96897795-C-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 499267.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=1, Likely_pathogenic=1}. Variant chr6-96897795-C-G is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NDUFAF4	NM_014165.4	c.7G>C	p.Ala3Pro	missense_variant	1/3	ENST00000316149.8	NP_054884.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NDUFAF4	ENST00000316149.8	c.7G>C	p.Ala3Pro	missense_variant	1/3	1	NM_014165.4	ENSP00000358272.4
NDUFAF4	ENST00000489477.1	n.80G>C		non_coding_transcript_exon_variant	1/4	3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461818 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727216

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: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:2 Uncertain:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Mitochondrial complex 1 deficiency, nuclear type 15 Pathogenic:2

Likely pathogenic, criteria provided, single submitter	curation	SIB Swiss Institute of Bioinformatics	Jan 25, 2019	This variant is interpreted as a Likely pathogenic for Mitochondrial complex I deficiency, nuclear type 15, autosomal recessive. The following ACMG Tag(s) were applied: PM2 : Absent from controls (or at extremely low frequency if recessive) in Exome Sequencing Project, 1000 Genomes Project, or Exome Aggregation Consortium. PS3 : Well-established functional studies show a deleterious effect (PMID:28853723). -
Pathogenic, no assertion criteria provided	literature only	OMIM	Jan 22, 2019	- -

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

Jan 03, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.35
BayesDel_addAF	Pathogenic	0.21	D
BayesDel_noAF	Uncertain	0.070
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.72	D
Eigen	Uncertain	0.25
Eigen_PC	Benign	0.089
FATHMM_MKL	Benign	0.41	N
LIST_S2	Benign	0.46	T
M_CAP	Uncertain	0.14	D
MetaRNN	Pathogenic	0.90	D
MetaSVM	Uncertain	0.055	D
MutationAssessor	Pathogenic	3.0	M
PrimateAI	Uncertain	0.53	T
PROVEAN	Uncertain	-2.4	N
REVEL	Uncertain	0.61
Sift	Uncertain	0.016	D
Sift4G	Uncertain	0.033	D
Polyphen		0.99	D
Vest4		0.59
MutPred		0.73		Gain of relative solvent accessibility (P = 0.0215);
MVP		0.78
MPC		0.97
ClinPred		0.93	D
GERP RS		4.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.83
gMVP		0.41

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: rs1554197721; hg19: chr6-97345671;