2-167869577-AT-A
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Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2
The NM_020981.4(B3GALT1):c.543del(p.Phe181LeufsTer2) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (no stars).
Frequency
Genomes: not found (cov: 32)
Consequence
B3GALT1
NM_020981.4 frameshift
NM_020981.4 frameshift
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 7.99
Genes affected
B3GALT1 (HGNC:916): (beta-1,3-galactosyltransferase 1) This gene is a member of the beta-1,3-galactosyltransferase (beta3GalT) gene family. This family encodes type II membrane-bound glycoproteins with diverse enzymatic functions using different donor substrates (UDP-galactose and UDP-N-acetylglucosamine) and different acceptor sugars (N-acetylglucosamine, galactose, N-acetylgalactosamine). The beta3GalT genes are distantly related to the Drosophila Brainiac gene and have the protein coding sequence contained in a single exon. The beta3GalT proteins also contain conserved sequences not found in the beta4GalT or alpha3GalT proteins. The carbohydrate chains synthesized by these enzymes are designated as type 1, whereas beta4GalT enzymes synthesize type 2 carbohydrate chains. The ratio of type 1:type 2 chains changes during embryogenesis. By sequence similarity, the beta3GalT genes fall into at least two groups: beta3GalT4 and 4 other beta3GalT genes (beta3GalT1-3, beta3GalT5). This gene is expressed exclusively in the brain. The encoded protein shows strict donor substrate specificity for UDP-galactose. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 2 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
|---|---|---|---|---|---|---|---|
| B3GALT1 | NM_020981.4 | c.543del | p.Phe181LeufsTer2 | frameshift_variant | 5/5 | ENST00000392690.4 | |
| B3GALT1-AS1 | NR_131227.1 | n.328+162del | intron_variant, non_coding_transcript_variant |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| B3GALT1 | ENST00000392690.4 | c.543del | p.Phe181LeufsTer2 | frameshift_variant | 5/5 | NM_020981.4 | P1 | ||
| B3GALT1-AS1 | ENST00000430546.2 | n.362+162del | intron_variant, non_coding_transcript_variant | 3 |
Frequencies
GnomAD3 genomes
GnomAD3 genomes
Cov.:
32
GnomAD4 exome Cov.: 31
GnomAD4 exome
Cov.:
31
GnomAD4 genome
GnomAD4 genome
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: no assertion criteria provided
LINK: link
Submissions by phenotype
Malignant tumor of prostate Uncertain:1
| Uncertain significance, no assertion criteria provided | literature only | Science for Life laboratory, Karolinska Institutet | - | - - |
Computational scores
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Name
Calibrated prediction
Score
Prediction
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at