NM_005154.5:c.802T>G

Variant names:

• chr15-50471748-T-G
• rs61751062
• NM_005154.5:c.802T>G
• USP8 p.Leu268Val

Variant summary

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

The NM_005154.5(USP8):​c.802T>G​(p.Leu268Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. L268I) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: USP8 NM_005154.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.84
• Publications: 0 publications found

Genes affected

USP8 (HGNC:12631): (ubiquitin specific peptidase 8) This gene encodes a protein that belongs to the ubiquitin-specific processing protease family of proteins. The encoded protein is thought to regulate the morphology of the endosome by ubiquitination of proteins on this organelle and is involved in cargo sorting and membrane trafficking at the early endosome stage. This protein is required for the cell to enter the S phase of the cell cycle and also functions as a positive regulator in the Hedgehog signaling pathway in development. Pseudogenes of this gene are present on chromosomes 2 and 6. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Sep 2013]

USP8 Gene-Disease associations (from GenCC):

• autosomal recessive spastic paraplegia type 59

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• complex neurodevelopmental disorder

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
• genetic developmental and epileptic encephalopathy

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
• hereditary spastic paraplegia

  Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.28224117).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005154.5. 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
	USP8	NM_005154.5	MANE Select	c.802T>G	p.Leu268Val	missense	Exon 8 of 20	NP_005145.3
	USP8	NM_001128610.3		c.802T>G	p.Leu268Val	missense	Exon 8 of 20	NP_001122082.1	P40818-1
	USP8	NM_001283049.2		c.571T>G	p.Leu191Val	missense	Exon 6 of 17	NP_001269978.1	P40818-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	USP8	ENST00000307179.9	TSL:1 MANE Select	c.802T>G	p.Leu268Val	missense	Exon 8 of 20	ENSP00000302239.4	P40818-1
	USP8	ENST00000396444.7	TSL:1	c.802T>G	p.Leu268Val	missense	Exon 8 of 20	ENSP00000379721.3	P40818-1
	USP8	ENST00000559329.5	TSL:1	n.802T>G		non_coding_transcript_exon	Exon 9 of 12	ENSP00000454003.1	A0A075B720

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Hereditary spastic paraplegia (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	0.0089	T
BayesDel_noAF	Benign	-0.22
CADD	Benign	19
DANN	Uncertain	1.0
DEOGEN2	Benign	0.11	T
Eigen	Uncertain	0.58
Eigen_PC	Uncertain	0.55
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.86	D
M_CAP	Benign	0.018	T
MetaRNN	Benign	0.28	T
MetaSVM	Benign	-0.93	T
MutationAssessor	Uncertain	2.5	M
PhyloP100		2.8
PrimateAI	Uncertain	0.54	T
PROVEAN	Benign	-0.67	N
REVEL	Benign	0.18
Sift	Benign	0.20	T
Sift4G	Benign	0.59	T
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.24
gMVP		0.51

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

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

Other links and lift over

dbSNP: rs61751062;

hg19: chr15-50763945;