14-64134072-T-C
Variant summary
Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP6BS1BS2
The NM_182914.3(SYNE2):c.14518T>C(p.Trp4840Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000489 in 1,614,030 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_182914.3 missense
Scores
Clinical Significance
Conservation
Publications
- male infertility with azoospermia or oligozoospermia due to single gene mutationInheritance: AR Classification: MODERATE Submitted by: King Faisal Specialist Hospital and Research Center
- familial medullary thyroid carcinomaInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- ovarian dysgenesis 8Inheritance: AD, Unknown Classification: LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
Genome browser will be placed here
ACMG classification
Our verdict: Benign. The variant received -9 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| SYNE2 | NM_182914.3 | c.14518T>C | p.Trp4840Arg | missense_variant | Exon 78 of 116 | ENST00000555002.6 | NP_878918.2 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| SYNE2 | ENST00000555002.6 | c.14518T>C | p.Trp4840Arg | missense_variant | Exon 78 of 116 | 1 | NM_182914.3 | ENSP00000450831.2 |
Frequencies
GnomAD3 genomes AF: 0.000138 AC: 21AN: 152180Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000677 AC: 17AN: 251238 AF XY: 0.0000663 show subpopulations
GnomAD4 exome AF: 0.0000397 AC: 58AN: 1461732Hom.: 0 Cov.: 32 AF XY: 0.0000413 AC XY: 30AN XY: 727170 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.000138 AC: 21AN: 152298Hom.: 0 Cov.: 32 AF XY: 0.000134 AC XY: 10AN XY: 74468 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Emery-Dreifuss muscular dystrophy 5, autosomal dominant Uncertain:1Benign:1
This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease.
This sequence change replaces tryptophan, which is neutral and slightly polar, with arginine, which is basic and polar, at codon 4840 of the SYNE2 protein (p.Trp4840Arg). This variant is present in population databases (rs148323208, gnomAD 0.06%), and has an allele count higher than expected for a pathogenic variant. This variant has not been reported in the literature in individuals affected with SYNE2-related conditions. ClinVar contains an entry for this variant (Variation ID: 569670). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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