1-230099285-G-A

Variant names:

• chr1-230099285-G-A
• rs12726525
• NM_004481.5:c.126+31879G>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_004481.5(GALNT2):​c.126+31879G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.282 in 152,092 control chromosomes in the GnomAD database, including 6,070 homozygotes. 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 0.28 (6070 hom., cov: 32)
• Consequence: GALNT2 NM_004481.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.992
• Publications: 3 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: Labcorp Genetics (formerly Invitae), Ambry Genetics, ClinGen

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.95).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.325 is higher than 0.05.

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GALNT2	NM_004481.5	MANE Select	c.126+31879G>A		intron	N/A	NP_004472.1	A0A1L7NY50
	GALNT2	NM_001291866.2		c.12+41207G>A		intron	N/A	NP_001278795.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GALNT2	ENST00000366672.5	TSL:1 MANE Select	c.126+31879G>A		intron	N/A	ENSP00000355632.4	Q10471-1
	GALNT2	ENST00000935982.1		c.126+31879G>A		intron	N/A	ENSP00000606041.1
	GALNT2	ENST00000950855.1		c.126+31879G>A		intron	N/A	ENSP00000620914.1

Frequencies

GnomAD3 genomes AF: 0.282 AC: 42856 AN: 151974 Hom.: 6066 Cov.: 32

Gnomad AFR AF: 0.330

Gnomad AMI AF: 0.441

Gnomad AMR AF: 0.220

Gnomad ASJ AF: 0.286

Gnomad EAS AF: 0.270

Gnomad SAS AF: 0.190

Gnomad FIN AF: 0.240

Gnomad MID AF: 0.222

Gnomad NFE AF: 0.280

Gnomad OTH AF: 0.250

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

GnomAD4 genome AF: 0.282 AC: 42883 AN: 152092 Hom.: 6070 Cov.: 32 AF XY: 0.277 AC XY: 20609 AN XY: 74364

African (AFR) AF: 0.329 AC: 13662 AN: 41482

American (AMR) AF: 0.220 AC: 3367 AN: 15288

Ashkenazi Jewish (ASJ) AF: 0.286 AC: 991 AN: 3470

East Asian (EAS) AF: 0.270 AC: 1395 AN: 5176

South Asian (SAS) AF: 0.190 AC: 916 AN: 4826

European-Finnish (FIN) AF: 0.240 AC: 2540 AN: 10580

Middle Eastern (MID) AF: 0.218 AC: 64 AN: 294

European-Non Finnish (NFE) AF: 0.280 AC: 19019 AN: 67960

Other (OTH) AF: 0.251 AC: 529 AN: 2108

Alfa AF: 0.186 Hom.: 475

Bravo AF: 0.284

Asia WGS AF: 0.228 AC: 791 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.95
CADD	Benign	0.45
DANN	Benign	0.49
PhyloP100		-0.99
Mutation Taster		=100/0	polymorphism (auto)

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: rs12726525; hg19: chr1-230235032; COSMIC: COSV64193730;