rs778357599
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2
The NM_001365999.1(SZT2):c.9481G>A(p.Asp3161Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,886 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. D3161A) has been classified as Uncertain significance.
Frequency
Consequence
NM_001365999.1 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 2 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
SZT2 | NM_001365999.1 | c.9481G>A | p.Asp3161Asn | missense_variant | Exon 68 of 72 | ENST00000634258.3 | NP_001352928.1 | |
SZT2 | NM_015284.4 | c.9310G>A | p.Asp3104Asn | missense_variant | Exon 67 of 71 | NP_056099.3 | ||
SZT2-AS1 | NR_046744.1 | n.586C>T | non_coding_transcript_exon_variant | Exon 2 of 2 |
Ensembl
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD4 exome AF: 0.00000137 AC: 2AN: 1461886Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1AN XY: 727244
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
not provided Uncertain:1
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. This sequence change replaces aspartic acid with asparagine at codon 3104 of the SZT2 protein (p.Asp3104Asn). The aspartic acid residue is highly conserved and there is a small physicochemical difference between aspartic acid and asparagine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with SZT2-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: "Probably Damaging"; Align-GVGD: "Class C0"). -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at