chr16-681811-G-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4_StrongBS1_Supporting

The NM_005861.4(STUB1):c.543G>T(p.Gln181His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000437 in 1,603,210 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00030 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000017 ( 0 hom. )

Consequence

STUB1
NM_005861.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.15

Variant links:

Genes affected

STUB1 (HGNC:11427): (STIP1 homology and U-box containing protein 1) This gene encodes a protein containing tetratricopeptide repeat and a U-box that functions as a ubiquitin ligase/cochaperone. The encoded protein binds to and ubiquitinates shock cognate 71 kDa protein (Hspa8) and DNA polymerase beta (Polb), among other targets. Mutations in this gene cause spinocerebellar ataxia, autosomal recessive 16. Alternative splicing results in multiple transcript variants. There is a pseudogene for this gene on chromosome 2. [provided by RefSeq, Jun 2014]

STUB1 links:

JMJD8 (HGNC:14148): (jumonji domain containing 8) Involved in several processes, including positive regulation of I-kappaB kinase/NF-kappaB signaling; positive regulation of sprouting angiogenesis; and regulation of glycolytic process. Located in endoplasmic reticulum lumen and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

JMJD8 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.038938373).

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000302 (46/152366) while in subpopulation AFR AF= 0.00108 (45/41592). AF 95% confidence interval is 0.000831. There are 0 homozygotes in gnomad4. There are 18 alleles in male gnomad4 subpopulation. Median coverage is 34. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
STUB1	NM_005861.4 link	c.543G>T	p.Gln181His	missense_variant	Exon 4 of 7	ENST00000219548.9	NP_005852.2
JMJD8	NM_001005920.4 link	c.*983C>A		3_prime_UTR_variant	Exon 9 of 9	ENST00000609261.6	NP_001005920.3	Q96S16-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
STUB1	ENST00000219548.9 link	c.543G>T	p.Gln181His	missense_variant	Exon 4 of 7	1	NM_005861.4	ENSP00000219548.4		Q9UNE7-1
JMJD8	ENST00000609261 link	c.*983C>A		3_prime_UTR_variant	Exon 9 of 9	1	NM_001005920.4	ENSP00000477481.1		Q96S16-1

Frequencies

GnomAD3 genomes

AF:

0.000302

AC:

AN:

152248

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00109

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000528

AC:

AN:

246304

Hom.:

AF XY:

0.0000150

AC XY:

AN XY:

133632

show subpopulations

Gnomad AFR exome

AF:

0.000813

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:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000165

AC:

AN:

1450844

Hom.:

Cov.:

AF XY:

0.0000125

AC XY:

AN XY:

719938

show subpopulations

Gnomad4 AFR exome

AF:

0.000660

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:

0.0000334

GnomAD4 genome

AF:

0.000302

AC:

AN:

152366

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

AN XY:

74504

show subpopulations

Gnomad4 AFR

AF:

0.00108

Gnomad4 AMR

AF:

0.0000653

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000231

Hom.:

Bravo

AF:

0.000389

ESP6500AA

AF:

0.00136

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000907

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

May 09, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces glutamine, which is neutral and polar, with histidine, which is basic and polar, at codon 181 of the STUB1 protein (p.Gln181His). This variant is present in population databases (rs144127842, gnomAD 0.09%). This variant has not been reported in the literature in individuals affected with STUB1-related conditions. ClinVar contains an entry for this variant (Variation ID: 2045145). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt STUB1 protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.098

BayesDel_addAF

Benign

-0.40

BayesDel_noAF

Benign

-0.41

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.52

.;D;.;.

Eigen

Benign

-0.090

Eigen_PC

Benign

0.017

FATHMM_MKL

Uncertain

0.91

LIST_S2

Benign

0.77

.;T;T;T

M_CAP

Benign

0.011

MetaRNN

Benign

0.039

T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.4

.;L;.;.

PrimateAI

Benign

0.46

PROVEAN

Benign

-1.2

N;N;N;N

REVEL

Benign

0.096

Sift

Uncertain

0.026

D;D;D;D

Sift4G

Benign

0.099

T;T;D;T

Polyphen

0.60

.;P;.;.

Vest4

0.44

MutPred

0.16

.;Loss of stability (P = 0.257);.;.;

MVP

0.39

MPC

0.064

ClinPred

0.052

GERP RS

4.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.18

gMVP

0.29

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