17-3640207-A-T
Variant summary
Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1PM2PP5_Moderate
The NM_004937.3(CTNS):c.1A>T(p.Met1?) variant causes a start lost change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★).
Frequency
Genomes: not found (cov: 33)
Consequence
CTNS
NM_004937.3 start_lost
NM_004937.3 start_lost
Scores
5
5
6
Clinical Significance
Conservation
PhyloP100: 4.24
Genes affected
CTNS (HGNC:2518): (cystinosin, lysosomal cystine transporter) This gene encodes a seven-transmembrane domain protein that functions to transport cystine out of lysosomes. Its activity is driven by the H+ electrochemical gradient of the lysosomal membrane. Mutations in this gene cause cystinosis, a lysosomal storage disorder. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2009]
Genome browser will be placed here
ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 12 ACMG points.
PVS1
?
Start lost variant, no new inframe start found.
PM2
?
Very rare variant in population databases, with high coverage;
PP5
?
Variant 17-3640207-A-T is Pathogenic according to our data. Variant chr17-3640207-A-T is described in ClinVar as [Pathogenic]. Clinvar id is 1391189.Status of the report is criteria_provided_single_submitter, 1 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
CTNS | NM_004937.3 | c.1A>T | p.Met1? | start_lost | 3/12 | ENST00000046640.9 | |
LOC105371493 | XR_007065579.1 | n.2150-1122T>A | intron_variant, non_coding_transcript_variant |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
CTNS | ENST00000046640.9 | c.1A>T | p.Met1? | start_lost | 3/12 | 1 | NM_004937.3 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD3 genomes
?
Cov.:
33
GnomAD4 exome Cov.: 30
GnomAD4 exome
Cov.:
30
GnomAD4 genome ? Cov.: 33
GnomAD4 genome
?
Cov.:
33
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Juvenile nephropathic cystinosis;C0950123:Inborn genetic diseases;C2931013:Ocular cystinosis Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Mar 18, 2023 | This sequence change affects the initiator methionine of the CTNS mRNA. The next in-frame methionine is located at codon 148. For these reasons, this variant has been classified as Pathogenic. This variant disrupts the p.Ser139 amino acid residue in CTNS. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 10556299, 15128704, 18178779, 19863563, 31074291). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. Experimental studies have shown that disruption of the initiator codon affects CTNS function (PMID: 15128704). Algorithms developed to predict the effect of variants on protein structure and function are not available or were not evaluated for this variant. ClinVar contains an entry for this variant (Variation ID: 1391189). Disruption of the initiator codon has been observed in individual(s) with clinical features of cystinosis (PMID: 12442267, 19863563, 28793998). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. This variant is not present in population databases (gnomAD no frequency). - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Benign
Dann
Benign
DEOGEN2
Uncertain
T;.;.;.;.
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
D;D;D;D;D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D;D;D;D;D
MetaSVM
Uncertain
D
MutationTaster
Benign
D;D;D;D;D
PROVEAN
Benign
N;N;N;N;.
REVEL
Uncertain
Sift
Pathogenic
D;D;D;D;.
Sift4G
Benign
T;T;D;D;T
Polyphen
B;B;.;.;.
Vest4
MutPred
Loss of disorder (P = 0.0982);Loss of disorder (P = 0.0982);Loss of disorder (P = 0.0982);Loss of disorder (P = 0.0982);Loss of disorder (P = 0.0982);
MVP
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
Publications
No publications associated with this variant yet.