rs746114034

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PP3_Strong

The NM_001081.4(CUBN):​c.9555T>G​(p.Cys3185Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000103 in 1,461,816 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

CUBN
NM_001081.4 missense

Scores

7
6
6

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.0890

Publications

0 publications found
Variant links:
Genes affected
CUBN (HGNC:2548): (cubilin) Cubilin (CUBN) acts as a receptor for intrinsic factor-vitamin B12 complexes. The role of receptor is supported by the presence of 27 CUB domains. Cubulin is located within the epithelium of intestine and kidney. Mutations in CUBN may play a role in autosomal recessive megaloblastic anemia. [provided by RefSeq, Jul 2008]
CUBN Gene-Disease associations (from GenCC):
  • Imerslund-Grasbeck syndrome type 1
    Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Laboratory for Molecular Medicine
  • proteinuria, chronic benign
    Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
  • Imerslund-Grasbeck syndrome
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

PP3
MetaRNN computational evidence supports a deleterious effect, 0.982

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CUBNNM_001081.4 linkc.9555T>G p.Cys3185Trp missense_variant Exon 60 of 67 ENST00000377833.10 NP_001072.2 O60494
CUBNXM_011519709.3 linkc.5541T>G p.Cys1847Trp missense_variant Exon 34 of 41 XP_011518011.1
CUBNXM_011519710.3 linkc.5517T>G p.Cys1839Trp missense_variant Exon 34 of 41 XP_011518012.1
CUBNXM_011519711.4 linkc.5397T>G p.Cys1799Trp missense_variant Exon 33 of 40 XP_011518013.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CUBNENST00000377833.10 linkc.9555T>G p.Cys3185Trp missense_variant Exon 60 of 67 1 NM_001081.4 ENSP00000367064.4 O60494
CUBNENST00000649135.1 linkn.150T>G non_coding_transcript_exon_variant Exon 2 of 4

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD2 exomes
AF:
0.0000398
AC:
10
AN:
251294
AF XY:
0.00000736
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.000231
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000176
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000103
AC:
15
AN:
1461816
Hom.:
0
Cov.:
32
AF XY:
0.00000550
AC XY:
4
AN XY:
727206
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33478
American (AMR)
AF:
0.000224
AC:
10
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26134
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39696
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86254
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53412
Middle Eastern (MID)
AF:
0.000173
AC:
1
AN:
5768
European-Non Finnish (NFE)
AF:
0.00000180
AC:
2
AN:
1111960
Other (OTH)
AF:
0.0000331
AC:
2
AN:
60390
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.468
Heterozygous variant carriers
0
2
3
5
6
8
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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.:
32
Alfa
AF:
0.0000434
Hom.:
0
Bravo
AF:
0.0000189
ExAC
AF:
0.0000247
AC:
3

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Imerslund-Grasbeck syndrome type 1;C5394384:Proteinuria, chronic benign Uncertain:1
May 03, 2024
Fulgent Genetics, Fulgent Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Imerslund-Grasbeck syndrome Uncertain:1
Jul 11, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces cysteine, which is neutral and slightly polar, with tryptophan, which is neutral and slightly polar, at codon 3185 of the CUBN protein (p.Cys3185Trp). This variant is present in population databases (rs746114034, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with CUBN-related conditions. ClinVar contains an entry for this variant (Variation ID: 580610). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C15"). 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 available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.99
BayesDel_addAF
Uncertain
0.10
D
BayesDel_noAF
Pathogenic
0.20
CADD
Benign
20
DANN
Uncertain
0.99
DEOGEN2
Benign
0.41
T
Eigen
Benign
0.015
Eigen_PC
Benign
-0.30
FATHMM_MKL
Benign
0.079
N
LIST_S2
Benign
0.75
T
M_CAP
Uncertain
0.097
D
MetaRNN
Pathogenic
0.98
D
MetaSVM
Uncertain
0.29
D
MutationAssessor
Pathogenic
4.5
H
PhyloP100
0.089
PrimateAI
Uncertain
0.56
T
PROVEAN
Pathogenic
-11
D
REVEL
Uncertain
0.51
Sift
Pathogenic
0.0
D
Sift4G
Pathogenic
0.0
D
Polyphen
1.0
D
Vest4
0.94
MutPred
0.91
Gain of catalytic residue at L3183 (P = 0.0095);
MVP
0.83
MPC
0.52
ClinPred
1.0
D
GERP RS
-1.9
Varity_R
0.92
gMVP
0.98
Mutation Taster
=36/64
disease causing

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.15
Details are displayed if max score is > 0.2

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

Publications

Other links and lift over

dbSNP: rs746114034; hg19: chr10-16893342; API