2-69400519-C-T

Position:

• chr2-69400519-C-T

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PS1_Moderate PM1 PM2 PP3_Strong PP5_Moderate

The NM_001002755.4(NFU1):​c.565G>A​(p.Gly189Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★). Another nucleotide change resulting in same amino acid change has been previously reported as Likely pathogenicin UniProt.

• Frequency: Genomes: not found (cov: 32)
• Consequence: NFU1 NM_001002755.4 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:3
• Conservation: PhyloP100: 7.38

Genes affected

NFU1 (HGNC:16287): (NFU1 iron-sulfur cluster scaffold) This gene encodes a protein that is localized to mitochondria and plays a critical role in iron-sulfur cluster biogenesis. The encoded protein assembles and transfers 4Fe-4S clusters to target apoproteins including succinate dehydrogenase and lipoic acid synthase. Mutations in this gene are a cause of multiple mitochondrial dysfunctions syndrome-1, and pseudogenes of this gene are located on the short arms of chromosomes 1 and 3. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Dec 2011]

ACMG classification

Verdict is Pathogenic. Variant got 12 ACMG points.

• PS1: Transcript NM_001002755.4 (NFU1) is affected with MISSENSE_VARIANT having same AA change as one Pathogenic present in UniProt
• PM1: In a mutagenesis_site Alters protein structure. Increases likelihood of existing as monomer. Decreases ability to receive a Fe/S clusters from donor proteins. Decreases delivery rates of [2Fe-2S] cluster to target proteins. (size 0) in uniprot entity NFU1_HUMAN
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.987
• PP5: Variant 2-69400519-C-T is Pathogenic according to our data. Variant chr2-69400519-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 1285476.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NFU1	NM_001002755.4	c.565G>A	p.Gly189Arg	missense_variant	7/8	ENST00000410022.7	NP_001002755.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NFU1	ENST00000410022.7	c.565G>A	p.Gly189Arg	missense_variant	7/8	1	NM_001002755.4	ENSP00000387219	A1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, single submitter

Submissions by phenotype

Multiple mitochondrial dysfunctions syndrome 1 Pathogenic:2

Likely pathogenic, criteria provided, single submitter	clinical testing	Institute of Human Genetics, University of Leipzig Medical Center	Dec 02, 2020	Criteria applied: PS3_MOD,PS4_MOD,PM1,PM2_SUP,PM3_SUP,PP3 -
Pathogenic, no assertion criteria provided	literature only	OMIM	Sep 09, 2024	- -

SPASTIC PARAPLEGIA 93, AUTOSOMAL RECESSIVE Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Sep 09, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.48	D
BayesDel_noAF	Pathogenic	0.46
CADD	Pathogenic	33
DANN	Pathogenic	1.0
DEOGEN2	Pathogenic	0.84	D;.;.;.;D;D
Eigen	Pathogenic	1.1
Eigen_PC	Pathogenic	0.97
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Pathogenic	0.99	D;D;D;.;D;D
M_CAP	Pathogenic	0.67	D
MetaRNN	Pathogenic	0.99	D;D;D;D;D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Pathogenic	4.5	H;.;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Pathogenic	0.87	D
PROVEAN	Pathogenic	-7.9	D;D;D;D;D;D
REVEL	Pathogenic	0.97
Sift	Pathogenic	0.0	D;D;D;D;D;D
Sift4G	Pathogenic	0.0	D;D;D;D;.;D
Polyphen		1.0	D;.;D;.;.;.
Vest4		0.99
MutPred		0.90		Gain of solvent accessibility (P = 0.0037);.;.;.;.;.;
MVP		0.97
MPC		0.68
ClinPred		1.0	D
GERP RS		5.2
Varity_R		0.92
gMVP		0.93

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-69627651;