chr11-63988355-A-G

Position:

• chr11-63988355-A-G

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4 BS2

The NM_017670.3(OTUB1):​c.77A>G​(p.Tyr26Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000121 in 1,401,776 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Y26S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000012 (0 hom.)
• Consequence: OTUB1 NM_017670.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.13

Genes affected

OTUB1 (HGNC:23077): (OTU deubiquitinase, ubiquitin aldehyde binding 1) The product of this gene is a member of the OTU (ovarian tumor) superfamily of predicted cysteine proteases. The encoded protein is a highly specific ubiquitin iso-peptidase, and cleaves ubiquitin from branched poly-ubiquitin chains but not from ubiquitinated substrates. It interacts with another ubiquitin protease and an E3 ubiquitin ligase that inhibits cytokine gene transcription in the immune system. It is proposed to function in specific ubiquitin-dependent pathways, possibly by providing an editing function for polyubiquitin chain growth. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -5 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.30223295).
• BS2: High AC in GnomAdExome4 at 17 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
OTUB1	NM_017670.3	c.77A>G	p.Tyr26Cys	missense_variant	2/7	ENST00000538426.6
OTUB1	NR_003089.2	n.96A>G		non_coding_transcript_exon_variant	2/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
OTUB1	ENST00000538426.6	c.77A>G	p.Tyr26Cys	missense_variant	2/7	1	NM_017670.3	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.0000121 AC: 17 AN: 1401776 Hom.: 0 Cov.: 30 AF XY: 0.0000145 AC XY: 10 AN XY: 691590

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: 0.0000126

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000148

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 22, 2021

The c.77A>G (p.Y26C) alteration is located in exon 2 (coding exon 2) of the OTUB1 gene. This alteration results from a A to G substitution at nucleotide position 77, causing the tyrosine (Y) at amino acid position 26 to be replaced by a cysteine (C). 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	0.84
BayesDel_addAF	Uncertain	0.12	D
BayesDel_noAF	Uncertain	-0.070
CADD	Pathogenic	28
DANN	Benign	0.96
DEOGEN2	Benign	0.030	T;.;T;T;T;.
Eigen	Benign	0.14
Eigen_PC	Uncertain	0.23
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Uncertain	0.96	D;D;D;.;D;D
M_CAP	Benign	0.018	T
MetaRNN	Benign	0.30	T;T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.9	.;.;.;L;L;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;N
PrimateAI	Pathogenic	0.90	D
PROVEAN	Uncertain	-2.5	.;N;N;N;N;D
REVEL	Uncertain	0.55
Sift	Uncertain	0.0010	.;D;D;T;T;D
Sift4G	Benign	0.17	T;D;T;T;T;T
Polyphen		0.0050, 0.96	.;B;.;D;D;.
Vest4		0.70
MutPred		0.58		Gain of disorder (P = 0.0373);Gain of disorder (P = 0.0373);Gain of disorder (P = 0.0373);Gain of disorder (P = 0.0373);Gain of disorder (P = 0.0373);Gain of disorder (P = 0.0373);
MVP		0.53
MPC		2.2
ClinPred		0.86	D
GERP RS		4.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.35
gMVP		0.95

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

Other links and lift over

dbSNP: rs146537845; hg19: chr11-63755827;