chr12-109481675-C-T

Position:

• chr12-109481675-C-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_130466.4(UBE3B):​c.-89C>T variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0515 in 152,274 control chromosomes in the GnomAD database, including 283 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.051 (283 hom., cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: UBE3B NM_130466.4 5_prime_UTR
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: 0.0730

Genes affected

UBE3B (HGNC:13478): (ubiquitin protein ligase E3B) The modification of proteins with ubiquitin is an important cellular mechanism for targeting abnormal or short-lived proteins for degradation. Ubiquitination involves at least three classes of enzymes: E1 ubiquitin-activating enzymes, E2 ubiquitin-conjugating enzymes, and E3 ubiquitin-protein ligases. This gene encodes a member of the E3 ubiquitin-conjugating enzyme family which accepts ubiquitin from an E2 ubiquitin-conjugating enzyme and transfers the ubiquitin to the targeted substrates. A HECT (homology to E6-AP C-terminus) domain in the C-terminus of the longer isoform of this protein is the catalytic site of ubiquitin transfer and forms a complex with E2 conjugases. Shorter isoforms of this protein which lack the C-terminal HECT domain are therefore unlikely to bind E2 enzymes. Alternatively spliced transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2012]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BP6: Variant 12-109481675-C-T is Benign according to our data. Variant chr12-109481675-C-T is described in ClinVar as [Benign]. Clinvar id is 1235426.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.0612 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
UBE3B	NM_130466.4	c.-89C>T		5_prime_UTR_variant	2/28	ENST00000342494.8	NP_569733.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
UBE3B	ENST00000342494.8	c.-89C>T		5_prime_UTR_variant	2/28	1	NM_130466.4	ENSP00000340596	P1

Frequencies

GnomAD3 genomes AF: 0.0515 AC: 7830 AN: 152156 Hom.: 282 Cov.: 32

Gnomad AFR AF: 0.0396

Gnomad AMI AF: 0.0614

Gnomad AMR AF: 0.0307

Gnomad ASJ AF: 0.0723

Gnomad EAS AF: 0.000192

Gnomad SAS AF: 0.0108

Gnomad FIN AF: 0.0908

Gnomad MID AF: 0.0696

Gnomad NFE AF: 0.0628

Gnomad OTH AF: 0.0508

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 2 Hom.: 0 Cov.: 0 AC XY: 0 AN XY: 0

Gnomad4 FIN exome AF: 0.00

GnomAD4 genome AF: 0.0515 AC: 7842 AN: 152274 Hom.: 283 Cov.: 32 AF XY: 0.0510 AC XY: 3796 AN XY: 74450

Gnomad4 AFR AF: 0.0397

Gnomad4 AMR AF: 0.0307

Gnomad4 ASJ AF: 0.0723

Gnomad4 EAS AF: 0.000193

Gnomad4 SAS AF: 0.0110

Gnomad4 FIN AF: 0.0908

Gnomad4 NFE AF: 0.0628

Gnomad4 OTH AF: 0.0502

Alfa AF: 0.0481 Hom.: 99

Bravo AF: 0.0449

Asia WGS AF: 0.0100 AC: 35 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:2

Benign, criteria provided, single submitter	clinical testing	GeneDx	Jan 20, 2020	- -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	2.9
DANN	Benign	0.56
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.19		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

Other links and lift over

dbSNP: rs79330589; hg19: chr12-109919480;