1-230160042-A-G

Variant names:

• chr1-230160042-A-G
• rs10127775
• NM_004481.5:c.127-18176A>G

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_Strong BS1

The NM_004481.5(GALNT2):​c.127-18176A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000224 in 152,038 control chromosomes in the GnomAD database, with no homozygous occurrence. 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: 𝑓 0.00022 (0 hom., cov: 31)
• Consequence: GALNT2 NM_004481.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.123
• Publications: 28 publications found

Genes affected

GALNT2 (HGNC:4124): (polypeptide N-acetylgalactosaminyltransferase 2) This gene encodes a member of the glycosyltransferase 2 protein family. Members of this family initiate mucin-type O-glycoslation of peptides in the Golgi apparatus. The encoded protein may be involved in O-linked glycosylation of the immunoglobulin A1 hinge region. This gene may influence triglyceride levels, and may be involved Type 2 diabetes, as well as several types of cancer. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2014]

GALNT2 Gene-Disease associations (from GenCC):

• congenital disorder of glycosylation, type iit

  Inheritance: AR Classification: STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), PanelApp Australia, Ambry Genetics

ACMG classification

Our verdict: Benign. The variant received -8 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.93).
• BS1: Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.000224 (34/152038) while in subpopulation SAS AF = 0.00624 (30/4806). AF 95% confidence interval is 0.00449. There are 0 homozygotes in GnomAd4. There are 24 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004481.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GALNT2	NM_004481.5	MANE Select	c.127-18176A>G		intron	N/A	NP_004472.1
	GALNT2	NM_001291866.2		c.13-18176A>G		intron	N/A	NP_001278795.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GALNT2	ENST00000366672.5	TSL:1 MANE Select	c.127-18176A>G		intron	N/A	ENSP00000355632.4
	GALNT2	ENST00000935982.1		c.127-18176A>G		intron	N/A	ENSP00000606041.1
	GALNT2	ENST00000950855.1		c.127-18176A>G		intron	N/A	ENSP00000620914.1

Frequencies

GnomAD3 genomes AF: 0.000230 AC: 35 AN: 151918 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000387

Gnomad SAS AF: 0.00644

Gnomad FIN AF: 0.0000944

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.000479

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

GnomAD4 genome AF: 0.000224 AC: 34 AN: 152038 Hom.: 0 Cov.: 31 AF XY: 0.000323 AC XY: 24 AN XY: 74318

African (AFR) AF: 0.00 AC: 0 AN: 41456

American (AMR) AF: 0.00 AC: 0 AN: 15288

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.000387 AC: 2 AN: 5162

South Asian (SAS) AF: 0.00624 AC: 30 AN: 4806

European-Finnish (FIN) AF: 0.0000944 AC: 1 AN: 10590

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67954

Other (OTH) AF: 0.000474 AC: 1 AN: 2108

Alfa AF: 0.00 Hom.: 1380

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.93
CADD	Benign	5.5
DANN	Benign	0.64
PhyloP100		-0.12

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

Other links and lift over

dbSNP: rs10127775; hg19: chr1-230295789;