Variant 11-11271152-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_198516.3(GALNT18):c.1816G>A(p.Ala606Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000548 in 1,459,066 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

GALNT18
NM_198516.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.936

Variant links:

Genes affected

GALNT18 (HGNC:30488): (polypeptide N-acetylgalactosaminyltransferase 18) Enables polypeptide N-acetylgalactosaminyltransferase activity. Involved in protein O-linked glycosylation. Predicted to be located in Golgi membrane. Predicted to be integral component of membrane. Predicted to be active in Golgi apparatus. [provided by Alliance of Genome Resources, Apr 2022]

GALNT18 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.068684846).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GALNT18	NM_198516.3 linkuse as main transcript	c.1816G>A	p.Ala606Thr	missense_variant	11/11	ENST00000227756.5	NP_940918.2	Q6P9A2-1Q58A54
GALNT18	NM_001363464.2 linkuse as main transcript	c.1630G>A	p.Ala544Thr	missense_variant	10/10		NP_001350393.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GALNT18	ENST00000227756.5 linkuse as main transcript	c.1816G>A	p.Ala606Thr	missense_variant	11/11	1	NM_198516.3	ENSP00000227756.4		Q6P9A2-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250908

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135620

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000882

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000548

AC:

AN:

1459066

Hom.:

Cov.:

AF XY:

0.00000689

AC XY:

AN XY:

725270

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000451

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000756

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 27, 2022

The c.1816G>A (p.A606T) alteration is located in exon 11 (coding exon 11) of the GALNT18 gene. This alteration results from a G to A substitution at nucleotide position 1816, causing the alanine (A) at amino acid position 606 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.063

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.57

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.025

Eigen

Benign

-0.76

Eigen_PC

Benign

-0.62

FATHMM_MKL

Benign

0.57

LIST_S2

Benign

0.77

M_CAP

Benign

0.015

MetaRNN

Benign

0.069

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.69

PrimateAI

Benign

0.31

PROVEAN

Benign

-0.67

REVEL

Benign

0.053

Sift

Benign

0.090

Sift4G

Uncertain

0.036

Polyphen

0.012

Vest4

0.041

MutPred

0.12

Gain of relative solvent accessibility (P = 0.09);

MVP

0.27

MPC

0.32

ClinPred

0.070

GERP RS

1.3

Varity_R

0.057

gMVP

0.18

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