chr3-100748398-A-G
Variant summary
Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.
The NM_006070.6(TFG):c.1070A>G(p.Tyr357Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000805 in 1,614,018 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Consequence
NM_006070.6 missense
Scores
Clinical Significance
Conservation
Publications
- hereditary motor and sensory neuropathy, Okinawa typeInheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
- hereditary spastic paraplegia 57Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
- autosomal dominant Charcot-Marie-Tooth disease type 2 due to TFG mutationInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Uncertain_significance. The variant received 0 ACMG points.
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
| Selected | Gene | Transcript | Tags | HGVSc | HGVSp | Effect | Exon Rank | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| TFG | NM_006070.6 | MANE Select | c.1070A>G | p.Tyr357Cys | missense | Exon 8 of 8 | NP_006061.2 | ||
| TFG | NM_001007565.2 | c.1070A>G | p.Tyr357Cys | missense | Exon 8 of 8 | NP_001007566.1 | |||
| TFG | NM_001195478.2 | c.1070A>G | p.Tyr357Cys | missense | Exon 8 of 8 | NP_001182407.1 |
Ensembl Transcripts
| Selected | Gene | Transcript | Tags | HGVSc | HGVSp | Effect | Exon Rank | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| TFG | ENST00000240851.9 | TSL:1 MANE Select | c.1070A>G | p.Tyr357Cys | missense | Exon 8 of 8 | ENSP00000240851.4 | ||
| TFG | ENST00000476228.5 | TSL:1 | c.1058A>G | p.Tyr353Cys | missense | Exon 8 of 8 | ENSP00000417952.1 | ||
| TFG | ENST00000615993.2 | TSL:1 | c.*256A>G | 3_prime_UTR | Exon 9 of 9 | ENSP00000479269.2 |
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152182Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.00000398 AC: 1AN: 251120 AF XY: 0.00 show subpopulations
GnomAD4 exome AF: 0.00000752 AC: 11AN: 1461836Hom.: 0 Cov.: 33 AF XY: 0.00000825 AC XY: 6AN XY: 727216 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152182Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1AN XY: 74354 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Hereditary motor and sensory neuropathy, Okinawa type;C3714897:Hereditary spastic paraplegia 57 Uncertain:1
This sequence change replaces tyrosine with cysteine at codon 357 of the TFG protein (p.Tyr357Cys). The tyrosine residue is highly conserved and there is a large physicochemical difference between tyrosine and cysteine. This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with a TFG-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C25"). In summary, this variant is a novel missense change with uncertain impact on protein function. It has been classified as a Variant of Uncertain Significance.
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at