Genetic Variant GALNT12:p.Arg297Pro (chr9-98831930-G-C) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_024642.5(GALNT12):c.890G>C(p.Arg297Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R297W) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Consequence

GALNT12
NM_024642.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.35

Publications

1 publications found

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 Gene-Disease associations (from GenCC):

colorectal cancer, susceptibility to, 1
Inheritance: AD Classification: LIMITED Submitted by: ClinGen, Ambry Genetics, Labcorp Genetics (formerly Invitae)

GALNT12 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.849

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024642.5. 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
	GALNT12	NM_024642.5	MANE Select	c.890G>C	p.Arg297Pro	missense	Exon 4 of 10	NP_078918.3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
GALNT12	ENST00000375011.4	TSL:1 MANE Select	c.890G>C	p.Arg297Pro	missense	Exon 4 of 10	ENSP00000364150.3
GALNT12	ENST00000610463.1	TSL:4	n.*321G>C		non_coding_transcript_exon	Exon 3 of 4	ENSP00000477657.1
GALNT12	ENST00000610463.1	TSL:4	n.*321G>C		3_prime_UTR	Exon 3 of 4	ENSP00000477657.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251154

AF XY:

0.00000737

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Colorectal cancer, susceptibility to, 1

Uncertain:1

Jul 29, 2023

Baylor Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.68

BayesDel_addAF

Benign

-0.065

BayesDel_noAF

Benign

-0.16

CADD

Benign

(source)

DANN

Benign

0.96

DEOGEN2

Benign

0.21

Eigen

Benign

-0.34

Eigen_PC

Benign

-0.56

FATHMM_MKL

Benign

0.61

LIST_S2

Benign

0.57

M_CAP

Benign

0.043

MetaRNN

Pathogenic

0.85

MetaSVM

Benign

-0.79

MutationAssessor

Pathogenic

3.0

PhyloP100

1.4

PrimateAI

Benign

0.28

PROVEAN

Pathogenic

-5.1

REVEL

Benign

0.23

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0070

Polyphen

0.98

Vest4

0.62

MutPred

0.66

Loss of phosphorylation at S300 (P = 0.1024)

MVP

0.67

MPC

0.68

ClinPred

0.93

GERP RS

-1.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.84

gMVP

0.90

Mutation Taster

=58/42

polymorphism

(source)

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

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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

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over