3-100713746-A-T

Variant names:

• chr3-100713746-A-T
• rs377136610
• NM_006070.6:c.61A>T

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_006070.6(TFG):​c.61A>T​(p.Ile21Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,459,162 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I21V) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: TFG NM_006070.6 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 8.66
• Publications: 1 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: Orphanet, Labcorp Genetics (formerly Invitae)
• hereditary spastic paraplegia 57

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
• 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 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.811

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.61A>T	p.Ile21Phe	missense	Exon 2 of 8	NP_006061.2
	TFG	NM_001007565.2		c.61A>T	p.Ile21Phe	missense	Exon 2 of 8	NP_001007566.1	Q92734-1
	TFG	NM_001195478.2		c.61A>T	p.Ile21Phe	missense	Exon 2 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.61A>T	p.Ile21Phe	missense	Exon 2 of 8	ENSP00000240851.4	Q92734-1
	TFG	ENST00000476228.5	TSL:1	c.61A>T	p.Ile21Phe	missense	Exon 2 of 8	ENSP00000417952.1	Q92734-2
	TFG	ENST00000615993.2	TSL:1	c.61A>T	p.Ile21Phe	missense	Exon 2 of 9	ENSP00000479269.2	Q92734-4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000399 AC: 1 AN: 250748 AF XY: 0.00000738

Gnomad AFR exome AF: 0.0000616

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1459162 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 725874

African (AFR) AF: 0.0000299 AC: 1 AN: 33438

American (AMR) AF: 0.00 AC: 0 AN: 44630

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26028

East Asian (EAS) AF: 0.00 AC: 0 AN: 39662

South Asian (SAS) AF: 0.00 AC: 0 AN: 85786

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53300

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1110310

Other (OTH) AF: 0.00 AC: 0 AN: 60244

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000113

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Hereditary motor and sensory neuropathy, Okinawa type;C3714897:Hereditary spastic paraplegia 57 (1)
-	1	-	Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.19	D
BayesDel_noAF	Pathogenic	0.21
CADD	Pathogenic	28
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.59	D
Eigen	Pathogenic	0.91
Eigen_PC	Pathogenic	0.88
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.96	D
M_CAP	Benign	0.054	D
MetaRNN	Pathogenic	0.81	D
MetaSVM	Benign	-0.29	T
MutationAssessor	Pathogenic	2.9	M
PhyloP100		8.7
PrimateAI	Pathogenic	0.86	D
PROVEAN	Uncertain	-3.5	D
REVEL	Pathogenic	0.70
Sift	Uncertain	0.0020	D
Sift4G	Uncertain	0.0030	D
Polyphen		1.0	D
Vest4		0.86
MutPred		0.59		Gain of catalytic residue at Q16 (P = 0.0787)
MVP		0.75
MPC		1.5
ClinPred		0.94	D
GERP RS		5.9
Varity_R		0.69
gMVP		0.74
Mutation Taster		=18/82	disease causing

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: rs377136610; hg19: chr3-100432590;