rs281874681
Variant summary
Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM1PM2PP3PP5_Moderate
The NM_033380.3(COL4A5):c.1856C>T(p.Pro619Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P619S) has been classified as Uncertain significance.
Frequency
Genomes: not found (cov: 23)
Consequence
COL4A5
NM_033380.3 missense
NM_033380.3 missense
Scores
1
5
10
Clinical Significance
Conservation
PhyloP100: 2.39
Genes affected
COL4A5 (HGNC:2207): (collagen type IV alpha 5 chain) This gene encodes one of the six subunits of type IV collagen, the major structural component of basement membranes. Mutations in this gene are associated with X-linked Alport syndrome, also known as hereditary nephritis. Like the other members of the type IV collagen gene family, this gene is organized in a head-to-head conformation with another type IV collagen gene so that each gene pair shares a common promoter. Alternatively spliced transcript variants have been identified for this gene. [provided by RefSeq, Aug 2010]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 7 ACMG points.
PM1
?
In a compositionally_biased_region Pro residues (size 22) in uniprot entity CO4A5_HUMAN there are 17 pathogenic changes around while only 6 benign (74%) in NM_033380.3
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
PP5
?
Variant X-108598778-C-T is Pathogenic according to our data. Variant chrX-108598778-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 2138696.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chrX-108598778-C-T is described in Lovd as [Likely_pathogenic]. Variant chrX-108598778-C-T is described in Lovd as [Pathogenic].
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
COL4A5 | NM_033380.3 | c.1856C>T | p.Pro619Leu | missense_variant | 25/53 | ENST00000328300.11 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
COL4A5 | ENST00000328300.11 | c.1856C>T | p.Pro619Leu | missense_variant | 25/53 | 1 | NM_033380.3 | ||
COL4A5 | ENST00000483338.1 | c.680C>T | p.Pro227Leu | missense_variant | 9/20 | 1 | |||
COL4A5 | ENST00000361603.7 | c.1856C>T | p.Pro619Leu | missense_variant | 25/51 | 2 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 23
GnomAD3 genomes
?
Cov.:
23
GnomAD4 exome Cov.: 30
GnomAD4 exome
Cov.:
30
GnomAD4 genome ? Cov.: 23
GnomAD4 genome
?
Cov.:
23
ClinVar
Significance: Likely pathogenic
Submissions summary: Pathogenic:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not provided Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Invitae | Feb 14, 2023 | This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 619 of the COL4A5 protein (p.Pro619Leu). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individuals with Alport syndrome (PMID: 11462238, 17660027, 19728970). It has also been observed to segregate with disease in related individuals. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt COL4A5 protein function. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Uncertain
D
BayesDel_noAF
Benign
Cadd
Uncertain
Dann
Benign
FATHMM_MKL
Benign
D
LIST_S2
Uncertain
D;D;D
M_CAP
Pathogenic
D
MetaRNN
Uncertain
T;T;T
MetaSVM
Benign
T
MutationAssessor
Benign
L;L;.
MutationTaster
Benign
D;D
PrimateAI
Benign
T
PROVEAN
Uncertain
D;N;.
REVEL
Uncertain
Sift
Benign
T;T;.
Sift4G
Benign
T;T;.
Polyphen
0.0080, 0.0030
.;B;B
Vest4
MutPred
Loss of glycosylation at P623 (P = 0.2517);Loss of glycosylation at P623 (P = 0.2517);.;
MVP
MPC
ClinPred
T
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
DS_AG_spliceai
Position offset: 30
Find out detailed SpliceAI scores and Pangolin per-transcript scores at