rs768012717

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PP3_Moderate

The NM_006371.5(CRTAP):​c.143A>G​(p.Tyr48Cys) variant causes a missense change. The variant allele was found at a frequency of 0.00000565 in 1,592,862 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 (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Y48F) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 34)
Exomes 𝑓: 0.0000056 ( 0 hom. )

Consequence

CRTAP
NM_006371.5 missense

Scores

12
6

Clinical Significance

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

Conservation

PhyloP100: 6.97

Publications

1 publications found
Variant links:
Genes affected
CRTAP (HGNC:2379): (cartilage associated protein) The protein encoded by this gene is similar to the chicken and mouse CRTAP genes. The encoded protein is a scaffolding protein that may influence the activity of at least one member of the cytohesin/ARNO family in response to specific cellular stimuli. Defects in this gene are associated with osteogenesis imperfecta, a connective tissue disorder characterized by bone fragility and low bone mass. [provided by RefSeq, Jul 2008]
CRTAP Gene-Disease associations (from GenCC):
  • osteogenesis imperfecta type 7
    Inheritance: AR Classification: STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
  • osteogenesis imperfecta type 2
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • osteogenesis imperfecta type 3
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • osteogenesis imperfecta type 4
    Inheritance: AD 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 2 ACMG points.

PP3
MetaRNN computational evidence supports a deleterious effect, 0.925

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006371.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CRTAP
NM_006371.5
MANE Select
c.143A>Gp.Tyr48Cys
missense
Exon 1 of 7NP_006362.1O75718
CRTAP
NM_001393363.1
c.143A>Gp.Tyr48Cys
missense
Exon 1 of 6NP_001380292.1
CRTAP
NM_001393364.1
c.143A>Gp.Tyr48Cys
missense
Exon 1 of 6NP_001380293.1C9JP16

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CRTAP
ENST00000320954.11
TSL:1 MANE Select
c.143A>Gp.Tyr48Cys
missense
Exon 1 of 7ENSP00000323696.5O75718
CRTAP
ENST00000946650.1
c.143A>Gp.Tyr48Cys
missense
Exon 1 of 7ENSP00000616709.1
CRTAP
ENST00000946648.1
c.143A>Gp.Tyr48Cys
missense
Exon 1 of 7ENSP00000616707.1

Frequencies

GnomAD3 genomes
AF:
0.00000658
AC:
1
AN:
152034
Hom.:
0
Cov.:
34
show subpopulations
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:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000147
Gnomad OTH
AF:
0.00
GnomAD4 exome
AF:
0.00000555
AC:
8
AN:
1440828
Hom.:
0
Cov.:
32
AF XY:
0.00000419
AC XY:
3
AN XY:
716550
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
32414
American (AMR)
AF:
0.00
AC:
0
AN:
43872
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25754
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39110
South Asian (SAS)
AF:
0.00
AC:
0
AN:
84348
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
42008
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5636
European-Non Finnish (NFE)
AF:
0.00000722
AC:
8
AN:
1107872
Other (OTH)
AF:
0.00
AC:
0
AN:
59814
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.494
Heterozygous variant carriers
0
1
2
3
4
5
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
AF:
0.00000658
AC:
1
AN:
152034
Hom.:
0
Cov.:
34
AF XY:
0.0000135
AC XY:
1
AN XY:
74284
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41420
American (AMR)
AF:
0.00
AC:
0
AN:
15272
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5166
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4830
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10598
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
312
European-Non Finnish (NFE)
AF:
0.0000147
AC:
1
AN:
67962
Other (OTH)
AF:
0.00
AC:
0
AN:
2094
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome 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
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.00000756

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
2
-
Osteogenesis imperfecta type 7 (2)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.93
BayesDel_addAF
Pathogenic
0.43
D
BayesDel_noAF
Pathogenic
0.37
CADD
Pathogenic
32
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.79
D
Eigen
Uncertain
0.56
Eigen_PC
Uncertain
0.44
FATHMM_MKL
Uncertain
0.94
D
LIST_S2
Pathogenic
0.99
D
M_CAP
Pathogenic
0.82
D
MetaRNN
Pathogenic
0.92
D
MetaSVM
Uncertain
0.30
D
MutationAssessor
Pathogenic
3.2
M
PhyloP100
7.0
PrimateAI
Pathogenic
0.85
D
PROVEAN
Pathogenic
-5.7
D
REVEL
Pathogenic
0.84
Sift
Pathogenic
0.0
D
Sift4G
Pathogenic
0.0010
D
Polyphen
1.0
D
Vest4
0.95
MutPred
0.61
Gain of glycosylation at Y48 (P = 0.0116)
MVP
0.94
MPC
0.62
ClinPred
1.0
D
GERP RS
3.2
PromoterAI
-0.17
Neutral
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.89
gMVP
0.92
Mutation Taster
=37/63
disease causing

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

Other links and lift over

dbSNP: rs768012717; hg19: chr3-33155712; API