Variant 4-22747305-A-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 ENST00000508166.5(GBA3):c.296A>T(p.Tyr99Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000314 in 1,604,220 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00027 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00032 ( 1 hom. )

Consequence

GBA3
ENST00000508166.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.44

Variant links:

Genes affected

GBA3 (HGNC:19069): (glucosylceramidase beta 3 (gene/pseudogene)) The protein encoded by this gene is a cytosolic enzyme that can hydrolyze several types of glycosides. The enzyme has its highest activity at neutral pH and is predominantly expressed in human liver, kidney, intestine, and spleen. This gene is a polymorphic pseudogene, with the most common allele being the functional allele that encodes the full-length protein. Some individuals contain a single nucleotide polymorphism that results in a premature stop codon in the coding region, and therefore this allele is pseudogenic due to the failure to produce a functional full-length protein. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Apr 2022]

GBA3 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=0.18655312).

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	#exon/exons
GBA3	NR_102355.2 linkuse as main transcript	n.375A>T	non_coding_transcript_exon_variant	3/5
GBA3	NR_102357.2 linkuse as main transcript	n.297A>T	non_coding_transcript_exon_variant	3/5
GBA3	NR_102356.2 linkuse as main transcript	n.365+11097A>T	intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	Appris
GBA3	ENST00000508166.5 linkuse as main transcript	c.296A>T	p.Tyr99Phe	missense_variant	3/5	1	P5
GBA3	ENST00000503442.1 linkuse as main transcript	c.286+11097A>T		intron_variant		1	A2
GBA3	ENST00000511446.2 linkuse as main transcript	c.-218A>T		5_prime_UTR_variant	3/5	2	A2

Frequencies

GnomAD3 genomes

AF:

0.000269

AC:

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.000941

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000265

AC:

AN:

245056

Hom.:

AF XY:

0.000248

AC XY:

AN XY:

132952

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:

0.000715

Gnomad NFE exome

AF:

0.000430

Gnomad OTH exome

AF:

0.000338

GnomAD4 exome

AF:

0.000319

AC:

463

AN:

1452014

Hom.:

Cov.:

AF XY:

0.000302

AC XY:

218

AN XY:

720840

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000253

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000740

Gnomad4 NFE exome

AF:

0.000369

Gnomad4 OTH exome

AF:

0.000250

GnomAD4 genome

AF:

0.000269

AC:

AN:

152206

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

AN XY:

74356

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000941

Gnomad4 NFE

AF:

0.000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000157

Hom.:

Bravo

AF:

0.000189

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000123

AC:

ExAC

AF:

0.000273

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

Nov 08, 2022

The c.296A>T (p.Y99F) alteration is located in exon 3 (coding exon 3) of the GBA3 gene. This alteration results from a A to T substitution at nucleotide position 296, causing the tyrosine (Y) at amino acid position 99 to be replaced by a phenylalanine (F). 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

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.15

Cadd

Benign

Dann

Uncertain

0.98

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.96

MetaRNN

Benign

0.19

PrimateAI

Uncertain

0.58

Vest4

0.51

MVP

0.53

GERP RS

5.6

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