rs756199

Positions:

• chr1-184033740-A-C
• chr1-184033740-A-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_015101.4(COLGALT2):​c.263+3355T>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: COLGALT2 NM_015101.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.764

Genes affected

COLGALT2 (HGNC:16790): (collagen beta(1-O)galactosyltransferase 2) Predicted to enable procollagen galactosyltransferase activity. Predicted to be involved in collagen fibril organization. Predicted to be located in endoplasmic reticulum lumen. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
COLGALT2	NM_015101.4	c.263+3355T>G		intron_variant		ENST00000361927.9	NP_055916.1
COLGALT2	NM_001303420.2	c.263+3355T>G		intron_variant			NP_001290349.1
COLGALT2	NM_001303421.2	c.-98+3841T>G		intron_variant			NP_001290350.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
COLGALT2	ENST00000361927.9	c.263+3355T>G		intron_variant		1	NM_015101.4	ENSP00000354960	P1
COLGALT2	ENST00000649786.1	c.263+3355T>G		intron_variant				ENSP00000497601

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	5.9
DANN	Benign	0.80

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs756199; hg19: chr1-184002874;