chrX-56565362-CCC-AGT

Variant names:

• chrX-56565362-CCC-AGT
• NM_013444.4:c.1489_1491delCCCinsAGT
• UBQLN2 p.Pro497Ser

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PS1 PM5

The NM_013444.4(UBQLN2):​c.1489_1491delCCCinsAGT​(p.Pro497Ser) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type MNV, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Pathogenic in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P497H) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 23)
• Consequence: UBQLN2 NM_013444.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.79
• Publications: 0 publications found

Genes affected

UBQLN2 (HGNC:12509): (ubiquilin 2) This gene encodes an ubiquitin-like protein (ubiquilin) that shares high degree of similarity with related products in yeast, rat and frog. Ubiquilins contain a 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 bind the ATPase domain of the Hsp70-like Stch protein. [provided by RefSeq, Oct 2009]

UBQLN2 Gene-Disease associations (from GenCC):

• amyotrophic lateral sclerosis type 15

  Inheritance: XL Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Genomics England PanelApp, ClinGen, Labcorp Genetics (formerly Invitae)
• amyotrophic lateral sclerosis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PS1: Transcript NM_013444.4 (UBQLN2) is affected with MISSENSE_VARIANT having same AA change as one Pathogenic present in ClinVar.
• PM5: Other missense variant is known to change same aminoacid residue: Variant chrX-56565363-C-A is described in ClinVar as Pathogenic. ClinVar VariationId is 29950.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_013444.4. 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
	UBQLN2	NM_013444.4	MANE Select	c.1489_1491delCCCinsAGT	p.Pro497Ser	missense	N/A	NP_038472.2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	UBQLN2	ENST00000338222.7	TSL:6 MANE Select	c.1489_1491delCCCinsAGT	p.Pro497Ser	missense	N/A	ENSP00000345195.5	Q9UHD9

Frequencies

GnomAD3 genomes Cov.: 23

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 23

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		3.8

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chrX-56591795;