chr8-24951167-C-T

Variant names:

• chr8-24951167-C-T
• rs8077
• NM_006158.5:c.*1643G>A

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_006158.5(NEFL):​c.*1643G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0817 in 152,208 control chromosomes in the GnomAD database, including 675 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.082 (675 hom., cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: NEFL NM_006158.5 3_prime_UTR
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -1.10
• Publications: 6 publications found

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 Gene-Disease associations (from GenCC):

• Charcot-Marie-Tooth disease

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• Charcot-Marie-Tooth disease type 2

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• Charcot-Marie-Tooth disease type 1F

  Inheritance: AR, AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
• Charcot-Marie-Tooth disease type 2E

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Charcot-Marie-Tooth disease type 2B5

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.85).
• BP6: Variant 8-24951167-C-T is Benign according to our data. Variant chr8-24951167-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 362617.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.115 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NEFL	NM_006158.5	c.*1643G>A		3_prime_UTR_variant	Exon 4 of 4	ENST00000610854.2	NP_006149.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NEFL	ENST00000610854.2	c.*1643G>A		3_prime_UTR_variant	Exon 4 of 4	1	NM_006158.5	ENSP00000482169.2

Frequencies

GnomAD3 genomes AF: 0.0817 AC: 12432 AN: 152090 Hom.: 675 Cov.: 32

Gnomad AFR AF: 0.118

Gnomad AMI AF: 0.0164

Gnomad AMR AF: 0.0794

Gnomad ASJ AF: 0.0818

Gnomad EAS AF: 0.000385

Gnomad SAS AF: 0.0617

Gnomad FIN AF: 0.0173

Gnomad MID AF: 0.152

Gnomad NFE AF: 0.0776

Gnomad OTH AF: 0.105

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 236 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 156

African (AFR) AC: 0 AN: 0

American (AMR) AC: 0 AN: 0

Ashkenazi Jewish (ASJ) AC: 0 AN: 0

East Asian (EAS) AC: 0 AN: 0

South Asian (SAS) AC: 0 AN: 0

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 228

Middle Eastern (MID) AC: 0 AN: 0

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 2

Other (OTH) AF: 0.00 AC: 0 AN: 6

GnomAD4 genome AF: 0.0817 AC: 12437 AN: 152208 Hom.: 675 Cov.: 32 AF XY: 0.0787 AC XY: 5860 AN XY: 74438

African (AFR) AF: 0.118 AC: 4903 AN: 41506

American (AMR) AF: 0.0792 AC: 1211 AN: 15300

Ashkenazi Jewish (ASJ) AF: 0.0818 AC: 284 AN: 3472

East Asian (EAS) AF: 0.000386 AC: 2 AN: 5182

South Asian (SAS) AF: 0.0622 AC: 300 AN: 4824

European-Finnish (FIN) AF: 0.0173 AC: 184 AN: 10612

Middle Eastern (MID) AF: 0.156 AC: 46 AN: 294

European-Non Finnish (NFE) AF: 0.0776 AC: 5274 AN: 67996

Other (OTH) AF: 0.103 AC: 218 AN: 2110

Alfa AF: 0.0788 Hom.: 69

Bravo AF: 0.0884

Asia WGS AF: 0.0300 AC: 103 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:1

-

Breakthrough Genomics, Breakthrough Genomics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Charcot-Marie-Tooth disease, type I Benign:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.85
CADD	Benign	0.068
DANN	Benign	0.40
PhyloP100		-1.1

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

Other links and lift over

dbSNP: rs8077; hg19: chr8-24808680;