Genetic Variant GALNT2:p.Gly38Gly (chr1-230067394-C-A) – ACMG Classification: Likely_benign (-1 pts)

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP7

The NM_004481.5(GALNT2):c.114C>A(p.Gly38Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000906 in 1,103,894 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. Synonymous variant affecting the same amino acid position (i.e. G38G) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 9.1e-7 ( 0 hom. )

Consequence

GALNT2
NM_004481.5 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.61

Publications

0 publications found

Variant links:

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

GALNT2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.37).

BP7

Synonymous conserved (PhyloP=1.61 with no splicing effect.

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

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
GALNT2	NM_004481.5	MANE Select	c.114C>A	p.Gly38Gly	synonymous	Exon 1 of 16	NP_004472.1	A0A1L7NY50
GALNT2	NM_001291866.2		c.12+9316C>A		intron	N/A	NP_001278795.1
GALNT2	NR_120373.2		n.157C>A		non_coding_transcript_exon	Exon 1 of 2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
GALNT2	ENST00000366672.5	TSL:1 MANE Select	c.114C>A	p.Gly38Gly	synonymous	Exon 1 of 16	ENSP00000355632.4	Q10471-1
GALNT2	ENST00000935982.1		c.114C>A	p.Gly38Gly	synonymous	Exon 1 of 16	ENSP00000606041.1
GALNT2	ENST00000950855.1		c.114C>A	p.Gly38Gly	synonymous	Exon 1 of 16	ENSP00000620914.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

9.06e-7

AC:

AN:

1103894

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

534330

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

21894

American (AMR)

AF:

0.00

AC:

AN:

9150

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

14038

East Asian (EAS)

AF:

0.00

AC:

AN:

23522

South Asian (SAS)

AF:

0.00

AC:

AN:

32072

European-Finnish (FIN)

AF:

0.00

AC:

AN:

32016

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3404

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

925304

Other (OTH)

AF:

0.0000235

AC:

AN:

42494

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.37

CADD

Benign

(source)

DANN

Benign

0.64

PhyloP100

1.6

PromoterAI

-0.026

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.3

Mutation Taster

=100/0

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over