chr9-98831878-G-A

Variant names:

• chr9-98831878-G-A
• rs748104709
• NM_024642.5:c.838G>A

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2

The NM_024642.5(GALNT12):​c.838G>A​(p.Asp280Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000607 in 1,614,010 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. D280G) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000053 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000062 (0 hom.)
• Consequence: GALNT12 NM_024642.5 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:3
• Conservation: PhyloP100: 8.15
• Publications: 2 publications found

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)

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BS2: High AC in GnomAd4 at 8 AD gene.

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.838G>A	p.Asp280Asn	missense	Exon 4 of 10	NP_078918.3

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GALNT12	ENST00000375011.4	TSL:1 MANE Select	c.838G>A	p.Asp280Asn	missense	Exon 4 of 10	ENSP00000364150.3
	GALNT12	ENST00000969913.1		c.838G>A	p.Asp280Asn	missense	Exon 4 of 11	ENSP00000639972.1
	GALNT12	ENST00000969912.1		c.838G>A	p.Asp280Asn	missense	Exon 4 of 11	ENSP00000639971.1

Frequencies

GnomAD3 genomes AF: 0.0000526 AC: 8 AN: 152156 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000483

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000735

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000716 AC: 18 AN: 251278 AF XY: 0.0000810

Gnomad AFR exome AF: 0.0000616

Gnomad AMR exome AF: 0.0000868

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000109

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000704

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000616 AC: 90 AN: 1461854 Hom.: 0 Cov.: 32 AF XY: 0.0000743 AC XY: 54 AN XY: 727228

African (AFR) AF: 0.000119 AC: 4 AN: 33480

American (AMR) AF: 0.0000671 AC: 3 AN: 44718

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39700

South Asian (SAS) AF: 0.000151 AC: 13 AN: 86244

European-Finnish (FIN) AF: 0.0000187 AC: 1 AN: 53414

Middle Eastern (MID) AF: 0.000173 AC: 1 AN: 5768

European-Non Finnish (NFE) AF: 0.0000594 AC: 66 AN: 1112002

Other (OTH) AF: 0.0000166 AC: 1 AN: 60394

GnomAD4 genome AF: 0.0000526 AC: 8 AN: 152156 Hom.: 0 Cov.: 32 AF XY: 0.0000404 AC XY: 3 AN XY: 74328

African (AFR) AF: 0.0000483 AC: 2 AN: 41444

American (AMR) AF: 0.00 AC: 0 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.000193 AC: 1 AN: 5174

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10614

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000735 AC: 5 AN: 68020

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.0000920 Hom.: 0

Bravo AF: 0.0000604

ExAC AF: 0.0000576 AC: 7

EpiCase AF: 0.000109

EpiControl AF: 0.000178

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Colorectal cancer, susceptibility to, 1 (1)
-	1	-	not provided (1)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.43
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.31
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.20	T
Eigen	Uncertain	0.34
Eigen_PC	Uncertain	0.47
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.89	D
M_CAP	Benign	0.022	T
MetaRNN	Uncertain	0.58	D
MetaSVM	Benign	-0.99	T
MutationAssessor	Benign	0.71	N
PhyloP100		8.1
PrimateAI	Uncertain	0.63	T
PROVEAN	Uncertain	-2.8	D
REVEL	Benign	0.15
Sift	Benign	0.16	T
Sift4G	Benign	0.16	T
Polyphen		0.69	P
Vest4		0.62
MVP		0.73
MPC		0.26
ClinPred		0.25	T
GERP RS		5.7
Varity_R		0.72
gMVP		0.80
Mutation Taster		=17/83	disease causing

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

Other links and lift over

dbSNP: rs748104709; hg19: chr9-101594160; COSMIC: COSV100899135;