Variant chr19-17808106-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_014256.4(B3GNT3):c.299C>T(p.Pro100Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000167 in 1,613,904 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 30)

Exomes 𝑓: 0.000017 ( 1 hom. )

Consequence

B3GNT3
NM_014256.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.111

Variant links:

Genes affected

B3GNT3 (HGNC:13528): (UDP-GlcNAc:betaGal beta-1,3-N-acetylglucosaminyltransferase 3) This gene encodes a member of the beta-1,3-N-acetylglucosaminyltransferase family. This enzyme is a type II transmembrane protein and contains a signal anchor that is not cleaved. It prefers the substrates of lacto-N-tetraose and lacto-N-neotetraose, and is involved in the biosynthesis of poly-N-acetyllactosamine chains and the biosynthesis of the backbone structure of dimeric sialyl Lewis a. It plays dominant roles in L-selectin ligand biosynthesis, lymphocyte homing and lymphocyte trafficking. [provided by RefSeq, Jul 2008]

B3GNT3 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.01774329).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
B3GNT3	NM_014256.4 link	c.299C>T	p.Pro100Leu	missense_variant	2/3	ENST00000318683.7	NP_055071.2	Q9Y2A9
B3GNT3	XM_011527626.3 link	c.299C>T	p.Pro100Leu	missense_variant	2/3		XP_011525928.1	Q9Y2A9
B3GNT3	XM_047438042.1 link	c.299C>T	p.Pro100Leu	missense_variant	2/3		XP_047293998.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
B3GNT3	ENST00000318683.7 link	c.299C>T	p.Pro100Leu	missense_variant	2/3	1	NM_014256.4	ENSP00000321874.5	Q9Y2A9
B3GNT3	ENST00000595387.1 link	c.299C>T	p.Pro100Leu	missense_variant	2/3	1		ENSP00000472638.1	Q9Y2A9
B3GNT3	ENST00000599265.5 link	c.299C>T	p.Pro100Leu	missense_variant	2/3	3		ENSP00000471733.1	M0R199
B3GNT3	ENST00000600777.1 link	c.299C>T	p.Pro100Leu	missense_variant	2/2	3		ENSP00000468914.1	M0QX58

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152132

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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

GnomAD3 exomes

AF:

0.0000919

AC:

AN:

250378

Hom.:

AF XY:

0.0000738

AC XY:

AN XY:

135576

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000666

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000171

AC:

AN:

1461654

Hom.:

Cov.:

AF XY:

0.0000151

AC XY:

AN XY:

727132

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000537

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:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152250

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74432

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000189

ExAC

AF:

0.000107

AC:

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

Oct 25, 2024

The c.299C>T (p.P100L) alteration is located in exon 2 (coding exon 1) of the B3GNT3 gene. This alteration results from a C to T substitution at nucleotide position 299, causing the proline (P) at amino acid position 100 to be replaced by a leucine (L). 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

0.076

BayesDel_addAF

Benign

-0.55

BayesDel_noAF

Benign

-0.66

CADD

Benign

0.24

DANN

Benign

0.66

DEOGEN2

Benign

0.025

T;T;T;T

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.089

LIST_S2

Benign

0.56

T;.;T;T

M_CAP

Benign

0.0084

MetaRNN

Benign

0.018

T;T;T;T

MetaSVM

Benign

-0.96

MutationAssessor

Benign

-0.90

.;N;.;N

PrimateAI

Benign

0.38

PROVEAN

Benign

-1.4

.;N;.;.

REVEL

Benign

0.031

Sift

Benign

0.35

.;T;.;.

Sift4G

Benign

0.17

T;T;T;T

Polyphen

0.042

.;B;.;B

Vest4

0.045, 0.047

MVP

0.27

MPC

0.71

ClinPred

0.030

GERP RS

-1.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.024

gMVP

0.45

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