chr9-83707612-G-A

Position:

• chr9-83707612-G-A

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_Moderate BS2

The NM_013438.5(UBQLN1):​c.68C>T​(p.Ala23Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000486 in 1,439,900 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000049 (0 hom.)
• Consequence: UBQLN1 NM_013438.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.47

Genes affected

UBQLN1 (HGNC:12508): (ubiquilin 1) This gene encodes an ubiquitin-like protein (ubiquilin) that shares a high degree of similarity with related products in yeast, rat and frog. Ubiquilins contain an N-terminal ubiquitin-like domain and a C-terminal ubiquitin-associated domain. They physically associate with both proteasomes and ubiquitin ligases, and thus are thought to functionally link the ubiquitination machinery to the proteasome to affect in vivo protein degradation. This ubiquilin has also been shown to modulate accumulation of presenilin proteins, and it is found in lesions associated with Alzheimer's and Parkinson's disease. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

UBQLN1-AS1 (HGNC:55518): (UBQLN1 antisense RNA 1)

ACMG classification

Verdict is Likely_benign. Variant got -6 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.1302326).
• BS2: High AC in GnomAdExome4 at 7 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
UBQLN1	NM_013438.5	c.68C>T	p.Ala23Val	missense_variant	1/11	ENST00000376395.9
UBQLN1	NM_053067.3	c.68C>T	p.Ala23Val	missense_variant	1/10
UBQLN1	XM_005251948.4	c.68C>T	p.Ala23Val	missense_variant	1/8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
UBQLN1	ENST00000376395.9	c.68C>T	p.Ala23Val	missense_variant	1/11	1	NM_013438.5	P3
UBQLN1	ENST00000257468.11	c.68C>T	p.Ala23Val	missense_variant	1/10	1		A1
UBQLN1-AS1	ENST00000524818.1	n.19G>A		non_coding_transcript_exon_variant	1/2	2
UBQLN1	ENST00000529923.1			upstream_gene_variant		2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000486 AC: 7 AN: 1439900 Hom.: 0 Cov.: 31 AF XY: 0.00000560 AC XY: 4 AN XY: 714668

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: 0.0000358

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000272

Gnomad4 OTH exome AF: 0.0000168

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000378

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

Aug 11, 2022

The c.68C>T (p.A23V) alteration is located in exon 1 (coding exon 1) of the UBQLN1 gene. This alteration results from a C to T substitution at nucleotide position 68, causing the alanine (A) at amino acid position 23 to be replaced by a valine (V). 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	Benign	0.12
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.43
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Benign	0.17	T;.
Eigen	Benign	-0.38
Eigen_PC	Benign	-0.24
FATHMM_MKL	Benign	0.29	N
LIST_S2	Benign	0.82	T;T
M_CAP	Benign	0.049	D
MetaRNN	Benign	0.13	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.6	L;L
MutationTaster	Benign	1.0	N;N
PrimateAI	Uncertain	0.77	T
PROVEAN	Benign	-0.10	N;N
REVEL	Benign	0.050
Sift	Benign	0.22	T;T
Sift4G	Benign	0.28	T;T
Polyphen		0.011	B;B
Vest4		0.14
MutPred		0.18		Loss of glycosylation at P26 (P = 0.0765);Loss of glycosylation at P26 (P = 0.0765);
MVP		0.47
MPC		0.48
ClinPred		0.14	T
GERP RS		2.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.078
gMVP		0.35

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: rs980064213; hg19: chr9-86322527;