B3GALT6 p.Arg6Arg

Variant names:

• chr1-1232293-G-G
• ENST00000900948.1:c.

Your query was ambiguous. Multiple possible variants found:

• chr1-1232294--
• chr1-1232296-G-T
• chr1-1232296-G-C
• chr1-1232296-G-A
• chr1-1232294-C-A
• chr1-1232294-CGG-AGA

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The ENST00000900948.1(SDF4):​c. variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SDF4 ENST00000900948.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.01
• Publications: 0 publications found

Genes affected

SDF4 (HGNC:24188): (stromal cell derived factor 4) This gene encodes a stromal cell derived factor that is a member of the CREC protein family. The encoded protein contains six EF-hand motifs and calcium-binding motifs. This protein localizes to the Golgi lumen and may be involved in regulating calcium dependent cellular activities. [provided by RefSeq, Sep 2011]

B3GALT6 (HGNC:17978): (beta-1,3-galactosyltransferase 6) The enzyme encoded by this intronless gene is a beta-1,3-galactosyltransferase found in the medial Golgi apparatus, where it catalyzes the transfer of galactose from UDP-galactose to substrates containing a terminal beta-linked galactose moiety. The encoded enzyme has a particular affinity for galactose-beta-1,4-xylose found in the linker region of glycosamines. This enzyme is required for glycosaminoglycan synthesis. [provided by RefSeq, Jun 2013]

B3GALT6 Gene-Disease associations (from GenCC):

• B3GALT6-congenital disorder of glycosylation

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• Ehlers-Danlos syndrome, spondylodysplastic type, 2

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• spondyloepimetaphyseal dysplasia with joint laxity, type 1, with or without fractures

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• spondyloepimetaphyseal dysplasia with joint laxity

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000900948.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
There are no transcript annotations for this variant.

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SDF4	ENST00000900948.1		c.		intron	N/A	ENSP00000571007.1
	SDF4	ENST00000900949.1		c.		upstream_gene	N/A	ENSP00000571008.1
	SDF4	ENST00000921530.1		c.		upstream_gene	N/A	ENSP00000591589.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		2.0

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr1-1167673;