chr8-91070403-G-A

Variant names:

• chr8-91070403-G-A
• rs764539241
• NM_016023.5:c.19G>A

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 3P and 1B. PM2 PP2 BP4

The NM_016023.5(OTUD6B):​c.19G>A​(p.Glu7Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000689 in 1,452,102 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: OTUD6B NM_016023.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.28
• Publications: 0 publications found

Genes affected

OTUD6B (HGNC:24281): (OTU deubiquitinase 6B) This gene encodes a member of the ovarian tumor domain (OTU)-containing subfamily of deubiquitinating enzymes. Deubiquitinating enzymes are primarily involved in removing ubiquitin from proteins targeted for degradation. This protein may function as a negative regulator of the cell cycle in B cells. [provided by RefSeq, Nov 2013]

OTUD6B-AS1 (HGNC:50466): (OTUD6B antisense RNA 1 (head to head))

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 4 curated pathogenic missense variants (we use a threshold of 10). The gene has 0 curated benign missense variants. Gene score misZ: 0.29632 (below the threshold of 3.09). Trascript score misZ: -0.268 (below the threshold of 3.09). GenCC associations: The gene is linked to intellectual developmental disorder with dysmorphic facies, seizures, and distal limb anomalies.
• BP4: Computational evidence support a benign effect (MetaRNN=0.31296396).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_016023.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OTUD6B	NM_016023.5	MANE Select	c.19G>A	p.Glu7Lys	missense	Exon 1 of 7	NP_057107.4
	OTUD6B	NM_001416022.1		c.19G>A	p.Glu7Lys	missense	Exon 1 of 6	NP_001402951.1
	OTUD6B	NM_001286745.3		c.-425G>A		5_prime_UTR	Exon 1 of 8	NP_001273674.1	Q8N6M0-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OTUD6B	ENST00000404789.8	TSL:1 MANE Select	c.19G>A	p.Glu7Lys	missense	Exon 1 of 7	ENSP00000384190.4	Q8N6M0-1
	OTUD6B	ENST00000285420.8	TSL:1	c.109G>A	p.Glu37Lys	missense	Exon 1 of 7	ENSP00000285420.4	A0A087X0W9
	OTUD6B	ENST00000617869.4	TSL:1	c.109G>A	p.Glu37Lys	missense	Exon 1 of 7	ENSP00000483706.1	A0A087X0W9

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.89e-7 AC: 1 AN: 1452102 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 721222

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33320

American (AMR) AF: 0.00 AC: 0 AN: 42864

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25922

East Asian (EAS) AF: 0.00 AC: 0 AN: 39454

South Asian (SAS) AF: 0.0000118 AC: 1 AN: 84446

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52938

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5756

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1107288

Other (OTH) AF: 0.00 AC: 0 AN: 60114

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.099
BayesDel_addAF	Uncertain	0.16	D
BayesDel_noAF	Uncertain	-0.010
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.032	T
Eigen	Benign	0.17
Eigen_PC	Benign	0.20
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Benign	0.84	T
M_CAP	Uncertain	0.27	D
MetaRNN	Benign	0.31	T
MetaSVM	Uncertain	0.59	D
MutationAssessor	Benign	1.6	L
PhyloP100		3.3
PrimateAI	Benign	0.44	T
PROVEAN	Benign	-1.6	N
REVEL	Uncertain	0.37
Sift	Uncertain	0.0090	D
Sift4G	Benign	0.27	T
Polyphen		0.91	P
Vest4		0.31
MutPred		0.21		Gain of ubiquitination at E7 (P = 0.0022)
MVP		0.94
MPC		0.15
ClinPred		0.96	D
GERP RS		5.7
PromoterAI		-0.070	Neutral
Varity_R		0.29
gMVP		0.077
Mutation Taster		=91/9	polymorphism

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

Other links and lift over

dbSNP: rs764539241; hg19: chr8-92082631;