chr8-24953558-C-T

Variant names:

• chr8-24953558-C-T
• rs543609297
• NM_006158.5:c.1407G>A

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_Strong BP6_Very_Strong BP7 BS1 BS2

The NM_006158.5(NEFL):​c.1407G>A​(p.Glu469Glu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00129 in 1,613,870 control chromosomes in the GnomAD database, including 24 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0071 (13 hom., cov: 33)
  • Exomes 𝑓: 0.00068 (11 hom.)
• Consequence: NEFL NM_006158.5 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7
• Conservation: PhyloP100: -1.04
• Publications: 1 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]

MIR6841 (HGNC:50070): (microRNA 6841) microRNAs (miRNAs) are short (20-24 nt) non-coding RNAs that are involved in post-transcriptional regulation of gene expression in multicellular organisms by affecting both the stability and translation of mRNAs. miRNAs are transcribed by RNA polymerase II as part of capped and polyadenylated primary transcripts (pri-miRNAs) that can be either protein-coding or non-coding. The primary transcript is cleaved by the Drosha ribonuclease III enzyme to produce an approximately 70-nt stem-loop precursor miRNA (pre-miRNA), which is further cleaved by the cytoplasmic Dicer ribonuclease to generate the mature miRNA and antisense miRNA star (miRNA*) products. The mature miRNA is incorporated into a RNA-induced silencing complex (RISC), which recognizes target mRNAs through imperfect base pairing with the miRNA and most commonly results in translational inhibition or destabilization of the target mRNA. The RefSeq represents the predicted microRNA stem-loop. [provided by RefSeq, Sep 2009]

ACMG classification

Our verdict: Benign. The variant received -21 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.68).
• BP6: Variant 8-24953558-C-T is Benign according to our data. Variant chr8-24953558-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 215429.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-1.04 with no splicing effect.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00711 (1083/152286) while in subpopulation AFR AF = 0.025 (1039/41540). AF 95% confidence interval is 0.0237. There are 13 homozygotes in GnomAd4. There are 499 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.
• BS2: High Homozygotes in GnomAd4 at 13 AR,AD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006158.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NEFL	NM_006158.5	MANE Select	c.1407G>A	p.Glu469Glu	synonymous	Exon 3 of 4	NP_006149.2
	MIR6841	NR_106900.1		n.*238G>A		downstream_gene	N/A

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NEFL	ENST00000610854.2	TSL:1 MANE Select	c.1407G>A	p.Glu469Glu	synonymous	Exon 3 of 4	ENSP00000482169.2
	MIR6841	ENST00000637129.1	TSL:6	n.*238G>A		downstream_gene	N/A

Frequencies

GnomAD3 genomes AF: 0.00713 AC: 1085 AN: 152168 Hom.: 13 Cov.: 33

Gnomad AFR AF: 0.0251

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00249

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.00191

GnomAD2 exomes AF: 0.00172 AC: 427 AN: 248622 AF XY: 0.00122

Gnomad AFR exome AF: 0.0254

Gnomad AMR exome AF: 0.000754

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000266

Gnomad OTH exome AF: 0.000497

GnomAD4 exome AF: 0.000681 AC: 995 AN: 1461584 Hom.: 11 Cov.: 32 AF XY: 0.000589 AC XY: 428 AN XY: 727060

African (AFR) AF: 0.0254 AC: 850 AN: 33480

American (AMR) AF: 0.000850 AC: 38 AN: 44706

Ashkenazi Jewish (ASJ) AF: 0.0000383 AC: 1 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86228

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53396

Middle Eastern (MID) AF: 0.000520 AC: 3 AN: 5766

European-Non Finnish (NFE) AF: 0.0000126 AC: 14 AN: 1111808

Other (OTH) AF: 0.00144 AC: 87 AN: 60368

GnomAD4 genome AF: 0.00711 AC: 1083 AN: 152286 Hom.: 13 Cov.: 33 AF XY: 0.00670 AC XY: 499 AN XY: 74472

African (AFR) AF: 0.0250 AC: 1039 AN: 41540

American (AMR) AF: 0.00248 AC: 38 AN: 15296

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5174

South Asian (SAS) AF: 0.00 AC: 0 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10628

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68030

Other (OTH) AF: 0.00189 AC: 4 AN: 2116

Alfa AF: 0.00337 Hom.: 4

Bravo AF: 0.00827

Asia WGS AF: 0.000866 AC: 3 AN: 3478

ClinVar

ClinVar submissions as Germline

Significance: Benign/Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	2	not specified (2)
-	-	1	Charcot-Marie-Tooth disease (1)
-	-	1	Charcot-Marie-Tooth disease type 1F (1)
-	-	1	Charcot-Marie-Tooth disease type 2E (1)
-	-	1	Inborn genetic diseases (1)
-	-	1	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.68
CADD	Benign	2.5
DANN	Benign	0.75
PhyloP100		-1.0

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: rs543609297; hg19: chr8-24811072;