Genetic Variant B3GNTL1:p.Phe327Ser (chr17-82946964-A-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001009905.3(B3GNTL1):c.980T>C(p.Phe327Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000447 in 1,567,162 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000042 ( 0 hom. )

Consequence

B3GNTL1
NM_001009905.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.23

Variant links:

Genes affected

B3GNTL1 (HGNC:21727): (UDP-GlcNAc:betaGal beta-1,3-N-acetylglucosaminyltransferase like 1) Predicted to enable glycosyltransferase activity. [provided by Alliance of Genome Resources, Apr 2022]

B3GNTL1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
B3GNTL1	NM_001009905.3 link	c.980T>C	p.Phe327Ser	missense_variant	Exon 12 of 13	ENST00000320865.4	NP_001009905.2	Q67FW5A0A024R8X6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
B3GNTL1	ENST00000320865.4 link	c.980T>C	p.Phe327Ser	missense_variant	Exon 12 of 13	1	NM_001009905.3	ENSP00000319979.4		Q67FW5

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152230

Hom.:

Cov.:

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:

0.000192

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:

0.0000226

AC:

AN:

176920

Hom.:

AF XY:

0.0000214

AC XY:

AN XY:

93622

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000225

Gnomad SAS exome

AF:

0.0000421

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000424

AC:

AN:

1414932

Hom.:

Cov.:

AF XY:

0.00000429

AC XY:

AN XY:

699266

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000107

Gnomad4 SAS exome

AF:

0.0000249

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152230

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74382

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000192

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ExAC

AF:

0.00000851

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 19, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1025T>C (p.F342S) alteration is located in exon 12 (coding exon 12) of the B3GNTL1 gene. This alteration results from a T to C substitution at nucleotide position 1025, causing the phenylalanine (F) at amino acid position 342 to be replaced by a serine (S). 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

Pathogenic

0.86

BayesDel_addAF

Uncertain

0.042

BayesDel_noAF

Uncertain

0.12

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.17

T;T

Eigen

Uncertain

0.55

Eigen_PC

Uncertain

0.46

FATHMM_MKL

Benign

0.76

LIST_S2

Uncertain

0.89

D;D

M_CAP

Benign

0.027

MetaRNN

Uncertain

0.64

D;D

MetaSVM

Benign

-0.37

MutationAssessor

Uncertain

2.7

.;M

PrimateAI

Uncertain

0.67

PROVEAN

Pathogenic

-6.0

.;D

REVEL

Benign

0.28

Sift

Uncertain

0.0010

.;D

Sift4G

Pathogenic

0.0010

D;D

Polyphen

1.0

.;D

Vest4

0.80

MutPred

0.45

.;Gain of disorder (P = 0.003);

MVP

0.73

MPC

0.68

ClinPred

0.92

GERP RS

4.0

Varity_R

0.76

gMVP

0.67

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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