rs58907919

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 2P and 16B. PM1BP4_StrongBP6_Very_StrongBS1

The NM_006158.5(NEFL):c.227T>C(p.Val76Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000261 in 1,611,162 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V76E) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00026 ( 0 hom. )

Consequence

NEFL
NM_006158.5 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5O:1

Conservation

PhyloP100: 1.21

Variant links:

Genes affected

NEFL (HGNC:7739): (neurofilament light chain) Neurofilaments are type IV intermediate filament heteropolymers composed of light, medium, and heavy chains. Neurofilaments comprise the axoskeleton and they functionally maintain the neuronal caliber. They may also play a role in intracellular transport to axons and dendrites. This gene encodes the light chain neurofilament protein. Mutations in this gene cause Charcot-Marie-Tooth disease types 1F (CMT1F) and 2E (CMT2E), disorders of the peripheral nervous system that are characterized by distinct neuropathies. A pseudogene has been identified on chromosome Y. [provided by RefSeq, Oct 2008]

NEFL links:

(HGNC:):

links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

PM1

In a region_of_interest Head (size 90) in uniprot entity NFL_HUMAN there are 25 pathogenic changes around while only 5 benign (83%) in NM_006158.5

BP4

Computational evidence support a benign effect (MetaRNN=0.00952068).

BP6

Variant 8-24956289-A-G is Benign according to our data. Variant chr8-24956289-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 66686.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr8-24956289-A-G is described in Lovd as [Benign]. Variant chr8-24956289-A-G is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000256 (39/152232) while in subpopulation EAS AF= 0.00718 (37/5150). AF 95% confidence interval is 0.00536. There are 0 homozygotes in gnomad4. There are 23 alleles in male gnomad4 subpopulation. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NEFL	NM_006158.5 linkuse as main transcript	c.227T>C	p.Val76Ala	missense_variant	1/4	ENST00000610854.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
NEFL	ENST00000610854.2 linkuse as main transcript	c.227T>C	p.Val76Ala	missense_variant	1/4	1	NM_006158.5	P1
	ENST00000607735.2 linkuse as main transcript	n.349A>G		non_coding_transcript_exon_variant	1/1
NEFL	ENST00000615973.1 linkuse as main transcript	n.433T>C		non_coding_transcript_exon_variant	1/1

Frequencies

GnomAD3 genomes

AF:

0.000256

AC:

AN:

152114

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00717

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000711

AC:

172

AN:

241940

Hom.:

AF XY:

0.000692

AC XY:

AN XY:

131466

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00866

Gnomad SAS exome

AF:

0.000508

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000273

Gnomad OTH exome

AF:

0.000169

GnomAD4 exome

AF:

0.000261

AC:

381

AN:

1458930

Hom.:

Cov.:

AF XY:

0.000254

AC XY:

184

AN XY:

725338

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00843

Gnomad4 SAS exome

AF:

0.000409

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.000166

GnomAD4 genome

AF:

0.000256

AC:

AN:

152232

Hom.:

Cov.:

AF XY:

0.000309

AC XY:

AN XY:

74428

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000653

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00718

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000854

Hom.:

Bravo

AF:

0.000283

ExAC

AF:

0.000735

AC:

Asia WGS

AF:

0.00173

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:1

Likely benign, no assertion criteria provided

literature only

Inherited Neuropathy Consortium

- -

Charcot-Marie-Tooth disease

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Molecular Genetics Laboratory, London Health Sciences Centre

- -

Charcot-Marie-Tooth disease type 1F

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Charcot-Marie-Tooth disease type 2E

Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Jan 17, 2024

- -

NEFL-related condition

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Apr 08, 2019

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

not provided

Other:1

not provided, no classification provided

literature only

Epithelial Biology; Institute of Medical Biology, Singapore

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.35

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.20

Cadd

Uncertain

Dann

Benign

0.90

DEOGEN2

Uncertain

0.43

T;.;T

FATHMM_MKL

Benign

0.37

LIST_S2

Benign

0.78

T;T;T

MetaRNN

Benign

0.0095

T;T;T

PrimateAI

Uncertain

0.53

Sift4G

Benign

0.46

T;.;T

Polyphen

0.030

B;.;.

Vest4

0.099

MVP

0.52

GERP RS

5.3

Varity_R

0.16

gMVP

0.55

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

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over