2-30910957-C-T

Variant names:

• chr2-30910957-C-T
• rs202186542
• NM_024572.4:c.1603G>A

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_024572.4(GALNT14):​c.1603G>A​(p.Val535Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000062 in 1,613,762 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V535F) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: GALNT14 NM_024572.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.773
• Publications: 4 publications found

Genes affected

GALNT14 (HGNC:22946): (polypeptide N-acetylgalactosaminyltransferase 14) This gene encodes a Golgi protein which is a member of the polypeptide N-acetylgalactosaminyltransferase (ppGalNAc-Ts) protein family. These enzymes catalyze the transfer of N-acetyl-D-galactosamine (GalNAc) to the hydroxyl groups on serines and threonines in target peptides. The encoded protein has been shown to transfer GalNAc to large proteins like mucins. Alterations in this gene may play a role in cancer progression and response to chemotherapy. [provided by RefSeq, Jun 2016]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.08464801).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024572.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GALNT14	NM_024572.4	MANE Select	c.1603G>A	p.Val535Ile	missense	Exon 15 of 15	NP_078848.2	Q96FL9-1
	GALNT14	NM_001253826.2		c.1618G>A	p.Val540Ile	missense	Exon 16 of 16	NP_001240755.1	Q96FL9-3
	GALNT14	NM_001253827.2		c.1543G>A	p.Val515Ile	missense	Exon 17 of 17	NP_001240756.1	Q96FL9-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GALNT14	ENST00000349752.10	TSL:1 MANE Select	c.1603G>A	p.Val535Ile	missense	Exon 15 of 15	ENSP00000288988.6	Q96FL9-1
	GALNT14	ENST00000324589.9	TSL:2	c.1618G>A	p.Val540Ile	missense	Exon 16 of 16	ENSP00000314500.5	Q96FL9-3
	GALNT14	ENST00000406653.5	TSL:2	c.1543G>A	p.Val515Ile	missense	Exon 17 of 17	ENSP00000385435.1	Q96FL9-4

Frequencies

GnomAD3 genomes AF: 0.00000658 AC: 1 AN: 151880 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000242

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: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000796 AC: 2 AN: 251412 AF XY: 0.0000147

Gnomad AFR exome AF: 0.000123

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1461882 Hom.: 0 Cov.: 30 AF XY: 0.0000110 AC XY: 8 AN XY: 727242

African (AFR) AF: 0.0000597 AC: 2 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000464 AC: 4 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53412

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1112008

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome AF: 0.00000658 AC: 1 AN: 151880 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74158

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.0000242 AC: 1 AN: 41342

American (AMR) AF: 0.00 AC: 0 AN: 15238

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5150

South Asian (SAS) AF: 0.00 AC: 0 AN: 4774

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10604

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

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67992

Other (OTH) AF: 0.00 AC: 0 AN: 2082

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000227

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.068
BayesDel_addAF	Benign	-0.38	T
BayesDel_noAF	Benign	-0.54
CADD	Benign	8.7
DANN	Benign	0.54
DEOGEN2	Benign	0.0058	T
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.049	N
LIST_S2	Benign	0.78	T
M_CAP	Benign	0.0041	T
MetaRNN	Benign	0.085	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.63	N
PhyloP100		0.77
PrimateAI	Benign	0.31	T
PROVEAN	Benign	-0.33	N
REVEL	Benign	0.017
Sift	Benign	0.65	T
Sift4G	Benign	0.73	T
Polyphen		0.0030	B
Vest4		0.054
MutPred		0.31		Gain of methylation at K531 (P = 0.1195)
MVP		0.16
MPC		0.19
ClinPred		0.013	T
GERP RS		-0.39
Varity_R		0.030
gMVP		0.16
Mutation Taster		=99/1	polymorphism

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: rs202186542; hg19: chr2-31133823; COSMIC: COSV61111950;