3-100748334-C-T
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_006070.6(TFG):c.1006C>T(p.Pro336Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000223 in 1,613,964 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_006070.6 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 0 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152134Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000159 AC: 4AN: 251132Hom.: 0 AF XY: 0.00000737 AC XY: 1AN XY: 135708
GnomAD4 exome AF: 0.0000239 AC: 35AN: 1461830Hom.: 0 Cov.: 33 AF XY: 0.0000248 AC XY: 18AN XY: 727210
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152134Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74308
ClinVar
Submissions by phenotype
Inborn genetic diseases Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Aug 23, 2021 | The c.1006C>T (p.P336S) alteration is located in exon 8 (coding exon 7) of the TFG gene. This alteration results from a C to T substitution at nucleotide position 1006, causing the proline (P) at amino acid position 336 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Feb 26, 2016 | The P336S variant has not been published as a pathogenic variant, nor has it been reported as a benign variant to our knowledge. It was not observed with any significant frequency in approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project. The P336S variant is a non-conservative amino acid substitution, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties. This substitution occurs at a position that is conserved in mammals. However, in silico analysis is inconsistent in its predictions as to whether or not the variant is damaging to the protein structure/function. Therefore, based on the currently available information, it is unclear whether this variant is a pathogenic variant or a rare benign variant. - |
Hereditary motor and sensory neuropathy, Okinawa type;C3714897:Hereditary spastic paraplegia 57 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Oct 01, 2023 | This sequence change replaces proline, which is neutral and non-polar, with serine, which is neutral and polar, at codon 336 of the TFG protein (p.Pro336Ser). This variant is present in population databases (rs371681149, gnomAD 0.004%). This variant has not been reported in the literature in individuals affected with TFG-related conditions. ClinVar contains an entry for this variant (Variation ID: 234835). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt TFG protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, 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