4-41257616-CC-AT

Variant names:

• chr4-41257616-CC-AT
• NM_004181.5:c.53_54delCCinsAT
• UCHL1 p.Ser18Tyr

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_004181.5(UCHL1):​c.53_54delCCinsAT​(p.Ser18Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. The variant is present in control chromosomes in GnomAd MNV project. The variant allele was found at a frequency of 0.0000127 in 2 alleles, including 0 homozygotes. 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 Benign in ClinVar.

• Frequency: GnomAD MNV: 𝑓 0.000013 Genomes: not found (cov: 33)
• Consequence: UCHL1 NM_004181.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.06
• Publications: 0 publications found

Genes affected

UCHL1 (HGNC:12513): (ubiquitin C-terminal hydrolase L1) The protein encoded by this gene belongs to the peptidase C12 family. This enzyme is a thiol protease that hydrolyzes a peptide bond at the C-terminal glycine of ubiquitin. This gene is specifically expressed in the neurons and in cells of the diffuse neuroendocrine system. Mutations in this gene may be associated with Parkinson disease.[provided by RefSeq, Sep 2009]

UCHL1 Gene-Disease associations (from GenCC):

• hereditary spastic paraplegia

  Inheritance: AD, AR Classification: DEFINITIVE, MODERATE Submitted by: ClinGen
• spastic paraplegia 79A, autosomal dominant, with ataxia

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• early-onset progressive neurodegeneration-blindness-ataxia-spasticity syndrome

  Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae)
• Parkinson disease 5, autosomal dominant, susceptibility to

  Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004181.5. 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
	UCHL1	NM_004181.5	MANE Select	c.53_54delCCinsAT	p.Ser18Tyr	missense	N/A	NP_004172.2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	UCHL1	ENST00000284440.9	TSL:1 MANE Select	c.53_54delCCinsAT	p.Ser18Tyr	missense	N/A	ENSP00000284440.4	P09936-1
	UCHL1	ENST00000512788.1	TSL:3	c.53_54delCCinsAT	p.Ser18Tyr	missense	N/A	ENSP00000423623.1	D6R956
	UCHL1	ENST00000503431.5	TSL:3	c.53_54delCCinsAT	p.Ser18Tyr	missense	N/A	ENSP00000422542.1	P09936-1

Frequencies

GnomAD3 genomes Cov.: 33

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

GnomAD4 genome Cov.: 33

GnomAD MNV AF: 0.0000127 AC: 2 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		1.1

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: chr4-41259633;