rs183981750

Positions:

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_024642.5(GALNT12):c.566A>G(p.Asn189Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00119 in 1,611,780 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00043 ( 1 hom., cov: 32)

Exomes 𝑓: 0.0013 ( 2 hom. )

Consequence

GALNT12
NM_024642.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:3O:1

Conservation

PhyloP100: 1.12

Variant links:

Genes affected

GALNT12 (HGNC:19877): (polypeptide N-acetylgalactosaminyltransferase 12) This gene encodes a member of a family of UDP-GalNAc:polypeptide N-acetylgalactosaminyltransferases, which catalyze the transfer of N-acetylgalactosamine (GalNAc) from UDP-GalNAc to a serine or threonine residue on a polypeptide acceptor in the initial step of O-linked protein glycosylation. Mutations in this gene are associated with an increased susceptibility to colorectal cancer.[provided by RefSeq, Mar 2011]

GALNT12 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.013543218).

BP6

Variant 9-98826776-A-G is Benign according to our data. Variant chr9-98826776-A-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 220845.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, not_provided=1, Uncertain_significance=1}.

BS2

High AC in GnomAd4 at 65 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GALNT12	NM_024642.5 linkuse as main transcript	c.566A>G	p.Asn189Ser	missense_variant	3/10	ENST00000375011.4	NP_078918.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GALNT12	ENST00000375011.4 linkuse as main transcript	c.566A>G	p.Asn189Ser	missense_variant	3/10	1	NM_024642.5	ENSP00000364150	P1	Q8IXK2-1
GALNT12	ENST00000610463.1 linkuse as main transcript	c.93A>G	p.Gln31=	synonymous_variant, NMD_transcript_variant	2/4	4		ENSP00000477657

Frequencies

GnomAD3 genomes

AF:

0.000427

AC:

AN:

152088

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000589

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000706

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000389

AC:

AN:

249590

Hom.:

AF XY:

0.000370

AC XY:

AN XY:

134956

show subpopulations

Gnomad AFR exome

AF:

0.000186

Gnomad AMR exome

AF:

0.000667

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000470

Gnomad NFE exome

AF:

0.000611

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.00127

AC:

1857

AN:

1459574

Hom.:

Cov.:

AF XY:

0.00124

AC XY:

901

AN XY:

726030

show subpopulations

Gnomad4 AFR exome

AF:

0.0000898

Gnomad4 AMR exome

AF:

0.000739

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000233

Gnomad4 FIN exome

AF:

0.0000563

Gnomad4 NFE exome

AF:

0.00160

Gnomad4 OTH exome

AF:

0.000697

GnomAD4 genome

AF:

0.000427

AC:

AN:

152206

Hom.:

Cov.:

AF XY:

0.000457

AC XY:

AN XY:

74410

show subpopulations

Gnomad4 AFR

AF:

0.000144

Gnomad4 AMR

AF:

0.000588

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000706

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000668

Hom.:

Bravo

AF:

0.000480

TwinsUK

AF:

0.00162

AC:

ALSPAC

AF:

0.00130

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000445

AC:

EpiCase

AF:

0.000654

EpiControl

AF:

0.000890

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:3Other:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 16, 2024	This sequence change replaces asparagine, which is neutral and polar, with serine, which is neutral and polar, at codon 189 of the GALNT12 protein (p.Asn189Ser). This variant is present in population databases (rs183981750, gnomAD 0.07%), and has an allele count higher than expected for a pathogenic variant. This variant has not been reported in the literature in individuals affected with GALNT12-related conditions. ClinVar contains an entry for this variant (Variation ID: 220845). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt GALNT12 protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Likely benign, criteria provided, single submitter	clinical testing	Quest Diagnostics Nichols Institute San Juan Capistrano	May 09, 2023	- -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 23, 2022

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

GALNT12-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jun 11, 2024

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Familial colorectal cancer

Other:1

not provided, no classification provided

phenotyping only

GenomeConnect, ClinGen

Variant interpreted as Uncertain significance and reported on 04-07-2021 by Lab or GTR ID 61756. GenomeConnect assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. GenomeConnect staff make no attempt to reinterpret the clinical significance of the variant. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.052

BayesDel_addAF

Benign

-0.57

BayesDel_noAF

Benign

-0.62

CADD

Benign

4.3

DANN

Benign

0.85

DEOGEN2

Benign

0.017

Eigen

Benign

-1.0

Eigen_PC

Benign

-0.99

FATHMM_MKL

Benign

0.25

LIST_S2

Benign

0.34

M_CAP

Benign

0.0060

MetaRNN

Benign

0.014

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.38

MutationTaster

Benign

1.0

PrimateAI

Benign

0.25

PROVEAN

Benign

-0.68

REVEL

Benign

0.057

Sift

Benign

0.086

Sift4G

Benign

0.30

Polyphen

0.030

Vest4

0.18

MVP

0.23

MPC

0.11

ClinPred

0.0028

GERP RS

-2.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.085

gMVP

0.16

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over