NM_014256.4:c.187G>C

Variant names:

• chr19-17807994-G-C
• NM_014256.4:c.187G>C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_014256.4(B3GNT3):​c.187G>C​(p.Ala63Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 25)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: B3GNT3 NM_014256.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.48

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]

ACMG classification

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=0.11794242).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
B3GNT3	NM_014256.4	c.187G>C	p.Ala63Pro	missense_variant	Exon 2 of 3	ENST00000318683.7	NP_055071.2
B3GNT3	XM_011527626.3	c.187G>C	p.Ala63Pro	missense_variant	Exon 2 of 3		XP_011525928.1
B3GNT3	XM_047438042.1	c.187G>C	p.Ala63Pro	missense_variant	Exon 2 of 3		XP_047293998.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
B3GNT3	ENST00000318683.7	c.187G>C	p.Ala63Pro	missense_variant	Exon 2 of 3	1	NM_014256.4	ENSP00000321874.5
B3GNT3	ENST00000595387.1	c.187G>C	p.Ala63Pro	missense_variant	Exon 2 of 3	1		ENSP00000472638.1
B3GNT3	ENST00000599265.5	c.187G>C	p.Ala63Pro	missense_variant	Exon 2 of 3	3		ENSP00000471733.1
B3GNT3	ENST00000600777.1	c.187G>C	p.Ala63Pro	missense_variant	Exon 2 of 2	3		ENSP00000468914.1

Frequencies

GnomAD3 genomes Cov.: 25

GnomAD4 exome Data not reliable, filtered out with message: AC0;AS_VQSR AF: 0.00 AC: 0 AN: 1195082 Hom.: 0 Cov.: 55 AF XY: 0.00 AC XY: 0 AN XY: 592970

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 25

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.076
BayesDel_addAF	Benign	-0.25	T
BayesDel_noAF	Benign	-0.60
CADD	Benign	12
DANN	Benign	0.96
DEOGEN2	Benign	0.022	T;T;T;T
Eigen	Benign	-0.83
Eigen_PC	Benign	-0.83
FATHMM_MKL	Benign	0.63	D
LIST_S2	Benign	0.53	T;.;T;T
M_CAP	Benign	0.042	D
MetaRNN	Benign	0.12	T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.6	.;L;.;L
PrimateAI	Benign	0.43	T
PROVEAN	Benign	-2.1	.;N;.;.
REVEL	Benign	0.058
Sift	Benign	0.27	.;T;.;.
Sift4G	Benign	0.20	T;T;T;T
Polyphen		0.019	.;B;.;B
Vest4		0.086, 0.081
MutPred		0.28		Loss of sheet (P = 0.0181);Loss of sheet (P = 0.0181);Loss of sheet (P = 0.0181);Loss of sheet (P = 0.0181);
MVP		0.25
MPC		0.92
ClinPred		0.079	T
GERP RS		-0.0064
Varity_R		0.15
gMVP		0.60

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-17918803;