Variant rs149724959 details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1PS1_ModeratePM2

The NM_000144.5(FXN):c.2del(p.Met1?) variant causes a frameshift, start lost change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000369 in 1,356,038 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000037 ( 0 hom. )

Consequence

FXN
NM_000144.5 frameshift, start_lost

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.25

Variant links:

Genes affected

FXN (HGNC:3951): (frataxin) This nuclear gene encodes a mitochondrial protein which belongs to the FRATAXIN family. The protein functions in regulating mitochondrial iron transport and respiration. The expansion of intronic trinucleotide repeat GAA from 8-33 repeats to >90 repeats results in Friedreich ataxia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2016]

FXN links:

(HGNC:):

links:

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 12 ACMG points.

PVS1

Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 25 pathogenic variants in the truncated region.

PS1

Another start lost variant in NM_000144.5 (FXN) was described as [Pathogenic] in ClinVar as 3983

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FXN	NM_000144.5 linkuse as main transcript	c.2del	p.Met1?	frameshift_variant, start_lost	1/5	ENST00000484259.3
FXN	NM_181425.3 linkuse as main transcript	c.2del	p.Met1?	frameshift_variant, start_lost	1/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FXN	ENST00000484259.3 linkuse as main transcript	c.2del	p.Met1?	frameshift_variant, start_lost	1/5	3	NM_000144.5	P1	Q16595-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000369

AC:

AN:

1356038

Hom.:

Cov.:

AF XY:

0.00000150

AC XY:

AN XY:

668624

show subpopulations

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000375

Gnomad4 OTH exome

AF:

0.0000177

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

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

Computational scores

Splicing

Publications

LitVar

Other links and lift over