chr20-58995718-C-G

Position:

• chr20-58995718-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001336.4(CTSZ):​c.843G>C​(p.Lys281Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,154 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
• Consequence: CTSZ NM_001336.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0700

Genes affected

CTSZ (HGNC:2547): (cathepsin Z) The protein encoded by this gene is a lysosomal cysteine proteinase and member of the peptidase C1 family. It exhibits both carboxy-monopeptidase and carboxy-dipeptidase activities. The encoded protein has also been known as cathepsin X and cathepsin P. This gene is expressed ubiquitously in cancer cell lines and primary tumors and, like other members of this family, may be involved in tumorigenesis. [provided by RefSeq, Oct 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CTSZ	NM_001336.4	c.843G>C	p.Lys281Asn	missense_variant	6/6	ENST00000217131.6	NP_001327.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CTSZ	ENST00000217131.6	c.843G>C	p.Lys281Asn	missense_variant	6/6	1	NM_001336.4	ENSP00000217131	P1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152154 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.0000942

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 31

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152154 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74322

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.0000942

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.45
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.43
CADD	Benign	19
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.67	D
Eigen	Benign	0.15
Eigen_PC	Benign	0.0015
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Uncertain	0.93	D
M_CAP	Benign	0.018	T
MetaRNN	Uncertain	0.64	D
MetaSVM	Benign	-0.78	T
MutationAssessor	Benign	1.6	L
MutationTaster	Benign	1.0	D
PrimateAI	Benign	0.46	T
PROVEAN	Uncertain	-3.7	D
REVEL	Benign	0.23
Sift	Uncertain	0.010	D
Sift4G	Uncertain	0.015	D
Polyphen		1.0	D
Vest4		0.52
MutPred		0.54		Loss of ubiquitination at K281 (P = 0.0148);
MVP		0.72
MPC		0.38
ClinPred		0.95	D
GERP RS		3.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.66
gMVP		0.89

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: rs6064734; hg19: chr20-57570773;