rs751874783

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 4P and 4B. PP3_StrongBS2

The NM_024642.5(GALNT12):ā€‹c.691T>Cā€‹(p.Cys231Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000272 in 1,581,786 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (ā˜…ā˜…).

Frequency

Genomes: š‘“ 0.000039 ( 0 hom., cov: 32)
Exomes š‘“: 0.000026 ( 0 hom. )

Consequence

GALNT12
NM_024642.5 missense

Scores

12
6
1

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 8.01
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PP3
MetaRNN computational evidence supports a deleterious effect, 0.942
BS2
High AC in GnomAd4 at 6 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
GALNT12NM_024642.5 linkuse as main transcriptc.691T>C p.Cys231Arg missense_variant 3/10 ENST00000375011.4 NP_078918.3 Q8IXK2-1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
GALNT12ENST00000375011.4 linkuse as main transcriptc.691T>C p.Cys231Arg missense_variant 3/101 NM_024642.5 ENSP00000364150.3 Q8IXK2-1
GALNT12ENST00000610463.1 linkuse as main transcriptn.*122T>C non_coding_transcript_exon_variant 2/44 ENSP00000477657.1 A0A087WT76
GALNT12ENST00000610463.1 linkuse as main transcriptn.*122T>C 3_prime_UTR_variant 2/44 ENSP00000477657.1 A0A087WT76

Frequencies

GnomAD3 genomes
AF:
0.0000394
AC:
6
AN:
152186
Hom.:
0
Cov.:
32
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:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000882
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000259
AC:
5
AN:
193186
Hom.:
0
AF XY:
0.0000289
AC XY:
3
AN XY:
103640
show subpopulations
Gnomad AFR exome
AF:
0.0000876
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000485
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000259
AC:
37
AN:
1429600
Hom.:
0
Cov.:
31
AF XY:
0.0000254
AC XY:
18
AN XY:
708180
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000263
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000310
Gnomad4 OTH exome
AF:
0.0000338
GnomAD4 genome
AF:
0.0000394
AC:
6
AN:
152186
Hom.:
0
Cov.:
32
AF XY:
0.0000135
AC XY:
1
AN XY:
74342
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:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000882
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000283
Hom.:
0
Bravo
AF:
0.0000189
ExAC
AF:
0.00000833
AC:
1

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsJan 13, 2024The p.C231R variant (also known as c.691T>C), located in coding exon 3 of the GALNT12 gene, results from a T to C substitution at nucleotide position 691. The cysteine at codon 231 is replaced by arginine, an amino acid with highly dissimilar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. The evidence for this gene-disease relationship is limited; therefore, the clinical significance of this alteration is unclear. -
not provided Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpMay 19, 2023In 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. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. 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) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on GALNT12 protein function. ClinVar contains an entry for this variant (Variation ID: 410592). This variant has not been reported in the literature in individuals affected with GALNT12-related conditions. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This sequence change replaces cysteine, which is neutral and slightly polar, with arginine, which is basic and polar, at codon 231 of the GALNT12 protein (p.Cys231Arg). -
Colorectal cancer, susceptibility to, 1 Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingBaylor GeneticsJan 22, 2024- -
GALNT12-related disorder Uncertain:1
Uncertain significance, no assertion criteria providedclinical testingPreventionGenetics, part of Exact SciencesMar 13, 2024The GALNT12 c.691T>C variant is predicted to result in the amino acid substitution p.Cys231Arg. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.0051% of alleles in individuals of European (Non-Finnish) descent in gnomAD, and it is interpreted as a variant of uncertain significance in ClinVar (https://www.ncbi.nlm.nih.gov/clinvar/variation/410592/). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
1.0
BayesDel_addAF
Pathogenic
0.37
D
BayesDel_noAF
Pathogenic
0.29
CADD
Pathogenic
32
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.44
T
Eigen
Pathogenic
0.99
Eigen_PC
Pathogenic
0.92
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Uncertain
0.97
D
M_CAP
Uncertain
0.15
D
MetaRNN
Pathogenic
0.94
D
MetaSVM
Uncertain
0.29
D
MutationAssessor
Pathogenic
4.1
H
PrimateAI
Uncertain
0.77
T
PROVEAN
Pathogenic
-11
D
REVEL
Pathogenic
0.77
Sift
Pathogenic
0.0
D
Sift4G
Pathogenic
0.0010
D
Polyphen
1.0
D
Vest4
0.99
MutPred
0.74
Loss of helix (P = 0.3949);
MVP
0.94
MPC
0.85
ClinPred
1.0
D
GERP RS
5.9
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
1.0
gMVP
0.92

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.

Other links and lift over

dbSNP: rs751874783; hg19: chr9-101589183; API