NM_006070.6:c.256C>T

Variant names:

• chr3-100720046-C-T
• NM_006070.6:c.256C>T
• TFG p.Leu86Leu

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_006070.6(TFG):​c.256C>T​(p.Leu86Leu) variant causes a synonymous change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. L86L) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: TFG NM_006070.6 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.78
• Publications: 0 publications found

Genes affected

TFG (HGNC:11758): (trafficking from ER to golgi regulator) There are several documented fusion oncoproteins encoded partially by this gene. This gene also participates in several oncogenic rearrangements resulting in anaplastic lymphoma and mixoid chondrosarcoma, and may play a role in the NF-kappaB pathway. Multiple transcript variants have been found for this gene. [provided by RefSeq, Sep 2010]

TFG Gene-Disease associations (from GenCC):

• hereditary motor and sensory neuropathy, Okinawa type

  Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, PanelApp Australia
• hereditary spastic paraplegia 57

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, PanelApp Australia
• autosomal dominant Charcot-Marie-Tooth disease type 2 due to TFG mutation

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.24).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006070.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TFG	NM_006070.6	MANE Select	c.256C>T	p.Leu86Leu	synonymous	Exon 3 of 8	NP_006061.2
	TFG	NM_001007565.2		c.256C>T	p.Leu86Leu	synonymous	Exon 3 of 8	NP_001007566.1	Q92734-1
	TFG	NM_001195478.2		c.256C>T	p.Leu86Leu	synonymous	Exon 3 of 8	NP_001182407.1	Q92734-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TFG	ENST00000240851.9	TSL:1 MANE Select	c.256C>T	p.Leu86Leu	synonymous	Exon 3 of 8	ENSP00000240851.4	Q92734-1
	TFG	ENST00000476228.5	TSL:1	c.256C>T	p.Leu86Leu	synonymous	Exon 3 of 8	ENSP00000417952.1	Q92734-2
	TFG	ENST00000615993.2	TSL:1	c.256C>T	p.Leu86Leu	synonymous	Exon 3 of 9	ENSP00000479269.2	Q92734-4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 25

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.24
CADD	Benign	10
DANN	Benign	0.79
PhyloP100		3.8

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr3-100438890;