9-98826883-A-T

Variant names:

Variant summary

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

The NM_024642.5(GALNT12):c.673A>T(p.Thr225Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000344 in 1,589,620 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00019 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00036 ( 3 hom. )

Consequence

GALNT12
NM_024642.5 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 9.32

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.028920978).

BP6

Variant 9-98826883-A-T is Benign according to our data. Variant chr9-98826883-A-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 416214.We mark this variant Likely_benign, oryginal submissions are: {Benign=1, Uncertain_significance=1}.

BS2

High AC in GnomAd4 at 29 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GALNT12	NM_024642.5 link	c.673A>T	p.Thr225Ser	missense_variant	Exon 3 of 10	ENST00000375011.4	NP_078918.3	Q8IXK2-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
GALNT12	ENST00000375011.4 link	c.673A>T	p.Thr225Ser	missense_variant	Exon 3 of 10	1	NM_024642.5	ENSP00000364150.3	Q8IXK2-1
GALNT12	ENST00000610463.1 link	n.*104A>T		non_coding_transcript_exon_variant	Exon 2 of 4	4		ENSP00000477657.1	A0A087WT76
GALNT12	ENST00000610463.1 link	n.*104A>T		3_prime_UTR_variant	Exon 2 of 4	4		ENSP00000477657.1	A0A087WT76

Frequencies

GnomAD3 genomes

AF:

0.000191

AC:

AN:

152114

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00601

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000636

AC:

130

AN:

204560

Hom.:

AF XY:

0.000990

AC XY:

109

AN XY:

110086

show subpopulations

Gnomad AFR exome

AF:

0.0000818

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00479

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000113

Gnomad OTH exome

AF:

0.000385

GnomAD4 exome

AF:

0.000360

AC:

518

AN:

1437388

Hom.:

Cov.:

AF XY:

0.000509

AC XY:

363

AN XY:

712754

show subpopulations

Gnomad4 AFR exome

AF:

0.0000303

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000259

Gnomad4 SAS exome

AF:

0.00575

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000100

Gnomad4 OTH exome

AF:

0.000488

GnomAD4 genome

AF:

0.000190

AC:

AN:

152232

Hom.:

Cov.:

AF XY:

0.000296

AC XY:

AN XY:

74426

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00602

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000416

ExAC

AF:

0.000654

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Benign:2

Department of Pathology and Laboratory Medicine, Sinai Health System

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

The GALNT12 p.Thr225Ser variant was not identified in the literature nor was it identified in Cosmic or LOVD 3.0. The variant was identified in dbSNP (ID: rs531023279) and ClinVar (classified as benign by Invitae and as uncertain significance by Ambry Genetics). The variant was identified in control databases in 131 of 235946 chromosomes at a frequency of 0.0005552 increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Database March 6, 2019, v2.1.1). The variant was observed in the following populations: South Asian in 126 of 26292 chromosomes (freq: 0.004792), Other in 3 of 6288 chromosomes (freq: 0.000477), African in 1 of 20938 chromosomes (freq: 0.000048) and European (non-Finnish) in 1 of 104262 chromosomes (freq: 0.00001), but was not observed in the Latino, Ashkenazi Jewish, East Asian, or European (Finnish) populations. The p.Thr225 residue is not conserved in mammals and computational analyses (PolyPhen-2, SIFT, AlignGVGD, BLOSUM, MutationTaster) provide inconsistent predictions regarding the impact to the protein; this information is not very predictive of pathogenicity. The variant occurs outside of the splicing consensus sequence and in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer) do not predict a difference in splicing. In summary, based on the above information the clinical significance of this variant cannot be determined with certainty at this time although we would lean towards a more benign role for this variant. This variant is classified as likely benign. -

Nov 04, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified

Uncertain:1

May 24, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.T225S variant (also known as c.673A>T), located in coding exon 3 of the GALNT12 gene, results from an A to T substitution at nucleotide position 673. The threonine at codon 225 is replaced by serine, an amino acid with similar properties. Based on data from gnomAD, the frequency for this variant is above the maximum credible frequency for a disease-causing variant in this gene based on internally established thresholds (Karczewski et al. Nature. 2020 May;581(7809):434-443; Whiffin et al. Genet Med. 2017 10;19:1151-1158). This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. The evidence for this gene-disease relationship is limited; therefore, the clinical significance of this alteration is unclear. -

GALNT12-related disorder

Benign:1

Sep 11, 2020

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

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). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.62

BayesDel_addAF

Benign

-0.10

BayesDel_noAF

Uncertain

0.080

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.21

Eigen

Pathogenic

0.80

Eigen_PC

Pathogenic

0.76

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.93

M_CAP

Benign

0.037

MetaRNN

Benign

0.029

MetaSVM

Uncertain

-0.20

MutationAssessor

Pathogenic

3.1

PrimateAI

Uncertain

0.62

PROVEAN

Uncertain

-3.8

REVEL

Uncertain

0.56

Sift

Uncertain

0.028

Sift4G

Uncertain

0.012

Polyphen

0.98

Vest4

0.90

MutPred

0.56

Gain of methylation at R220 (P = 0.1496);

MVP

0.86

MPC

0.60

ClinPred

0.22

GERP RS

6.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.79

gMVP

0.63

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

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