Genetic Variant CTSD:p.Arg403Lys (chr11-1753534-C-T) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_001909.5(CTSD):c.1208G>A(p.Arg403Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,742 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R403T) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

CTSD
NM_001909.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.47

Publications

0 publications found

Variant links:

Genes affected

CTSD (HGNC:2529): (cathepsin D) This gene encodes a member of the A1 family of peptidases. The encoded preproprotein is proteolytically processed to generate multiple protein products. These products include the cathepsin D light and heavy chains, which heterodimerize to form the mature enzyme. This enzyme exhibits pepsin-like activity and plays a role in protein turnover and in the proteolytic activation of hormones and growth factors. Mutations in this gene play a causal role in neuronal ceroid lipofuscinosis-10 and may be involved in the pathogenesis of several other diseases, including breast cancer and possibly Alzheimer's disease. [provided by RefSeq, Nov 2015]

CTSD Gene-Disease associations (from GenCC):

neuronal ceroid lipofuscinosis
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
neuronal ceroid lipofuscinosis 10
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, G2P, Genomics England PanelApp

CTSD links:

ENSG00000250644 (HGNC:):

ENSG00000250644 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CTSD	NM_001909.5 link	c.1208G>A	p.Arg403Lys	missense_variant	Exon 9 of 9	ENST00000236671.7	NP_001900.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CTSD	ENST00000236671.7 link	c.1208G>A	p.Arg403Lys	missense_variant	Exon 9 of 9	1	NM_001909.5	ENSP00000236671.2
ENSG00000250644	ENST00000636615.1 link	c.1071+269G>A		intron_variant	Intron 8 of 9	5		ENSP00000490014.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460742

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726718

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26128

East Asian (EAS)

AF:

0.00

AC:

AN:

39692

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52426

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111902

Other (OTH)

AF:

0.00

AC:

AN:

60372

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.24

BayesDel_addAF

Benign

-0.077

BayesDel_noAF

Benign

-0.35

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.45

T;T;.;T;.;T;.

Eigen

Benign

-0.15

Eigen_PC

Benign

-0.33

FATHMM_MKL

Benign

0.24

LIST_S2

Uncertain

0.92

D;D;D;D;D;D;D

M_CAP

Uncertain

0.087

MetaRNN

Benign

0.41

T;T;T;T;T;T;T

MetaSVM

Benign

-0.56

MutationAssessor

Pathogenic

3.0

M;.;.;.;.;.;.

PhyloP100

2.5

PrimateAI

Uncertain

0.48

PROVEAN

Benign

-1.9

N;.;.;.;.;.;N

REVEL

Benign

0.17

Sift

Uncertain

0.014

D;.;.;.;.;.;D

Sift4G

Uncertain

0.026

D;.;.;.;.;.;D

Polyphen

0.69

P;.;.;.;.;.;.

Vest4

0.37

MutPred

0.63

Gain of ubiquitination at R403 (P = 0.0337);.;.;.;.;.;.;

MVP

0.62

MPC

1.2

ClinPred

0.73

GERP RS

1.7

PromoterAI

-0.013

Neutral

(source)

Varity_R

0.64

gMVP

0.80

Mutation Taster

=77/23

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.81

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.81

Position offset: -1

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over