rs60822373

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_000574.5(CD55):​c.679G>C​(p.Ala227Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00108 in 1,611,430 control chromosomes in the GnomAD database, including 18 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0055 ( 8 hom., cov: 32)
Exomes 𝑓: 0.00062 ( 10 hom. )

Consequence

CD55
NM_000574.5 missense

Scores

18

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 0.116

Publications

10 publications found
Variant links:
Genes affected
CD55 (HGNC:2665): (CD55 molecule (Cromer blood group)) This gene encodes a glycoprotein involved in the regulation of the complement cascade. Binding of the encoded protein to complement proteins accelerates their decay, thereby disrupting the cascade and preventing damage to host cells. Antigens present on this protein constitute the Cromer blood group system (CROM). Alternative splicing results in multiple transcript variants. The predominant transcript variant encodes a membrane-bound protein, but alternatively spliced transcripts may produce soluble proteins. [provided by RefSeq, Jul 2014]
CD55 Gene-Disease associations (from GenCC):
  • protein-losing enteropathy
    Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.0067967772).
BP6
Variant 1-207331122-G-C is Benign according to our data. Variant chr1-207331122-G-C is described in ClinVar as Benign. ClinVar VariationId is 1164353.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BS1
Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0055 (837/152158) while in subpopulation AFR AF = 0.0183 (760/41488). AF 95% confidence interval is 0.0172. There are 8 homozygotes in GnomAd4. There are 413 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
BS2
High Homozygotes in GnomAd4 at 8 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CD55NM_000574.5 linkc.679G>C p.Ala227Pro missense_variant Exon 6 of 10 ENST00000367064.9 NP_000565.1 P08174-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CD55ENST00000367064.9 linkc.679G>C p.Ala227Pro missense_variant Exon 6 of 10 1 NM_000574.5 ENSP00000356031.4 P08174-1

Frequencies

GnomAD3 genomes
AF:
0.00545
AC:
828
AN:
152040
Hom.:
7
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0181
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00321
Gnomad ASJ
AF:
0.00202
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000207
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00316
Gnomad NFE
AF:
0.000103
Gnomad OTH
AF:
0.00621
GnomAD2 exomes
AF:
0.00164
AC:
411
AN:
250250
AF XY:
0.00112
show subpopulations
Gnomad AFR exome
AF:
0.0192
Gnomad AMR exome
AF:
0.00158
Gnomad ASJ exome
AF:
0.00239
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000115
Gnomad OTH exome
AF:
0.000984
GnomAD4 exome
AF:
0.000624
AC:
911
AN:
1459272
Hom.:
10
Cov.:
30
AF XY:
0.000565
AC XY:
410
AN XY:
725838
show subpopulations
African (AFR)
AF:
0.0184
AC:
614
AN:
33410
American (AMR)
AF:
0.00171
AC:
76
AN:
44482
Ashkenazi Jewish (ASJ)
AF:
0.00173
AC:
45
AN:
26062
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39644
South Asian (SAS)
AF:
0.0000467
AC:
4
AN:
85718
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53352
Middle Eastern (MID)
AF:
0.00504
AC:
29
AN:
5758
European-Non Finnish (NFE)
AF:
0.0000504
AC:
56
AN:
1110546
Other (OTH)
AF:
0.00144
AC:
87
AN:
60300
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.462
Heterozygous variant carriers
0
41
82
123
164
205
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
30
60
90
120
150
<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:
0.00550
AC:
837
AN:
152158
Hom.:
8
Cov.:
32
AF XY:
0.00555
AC XY:
413
AN XY:
74394
show subpopulations
African (AFR)
AF:
0.0183
AC:
760
AN:
41488
American (AMR)
AF:
0.00320
AC:
49
AN:
15296
Ashkenazi Jewish (ASJ)
AF:
0.00202
AC:
7
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5184
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4822
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10568
Middle Eastern (MID)
AF:
0.00340
AC:
1
AN:
294
European-Non Finnish (NFE)
AF:
0.000103
AC:
7
AN:
68008
Other (OTH)
AF:
0.00614
AC:
13
AN:
2116
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.501
Heterozygous variant carriers
0
39
77
116
154
193
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
Variant carriers
0
10
20
30
40
50
<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:
0.000471
Hom.:
1
Bravo
AF:
0.00629
TwinsUK
AF:
0.00
AC:
0
ALSPAC
AF:
0.000259
AC:
1
ESP6500AA
AF:
0.0195
AC:
86
ESP6500EA
AF:
0.000349
AC:
3
ExAC
AF:
0.00204
AC:
248
Asia WGS
AF:
0.00260
AC:
10
AN:
3478

ClinVar

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

Submissions by phenotype

not provided Benign:2
-
Breakthrough Genomics, Breakthrough Genomics
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:not provided

- -

Jan 11, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.080
BayesDel_addAF
Benign
-0.48
T
BayesDel_noAF
Benign
-0.45
CADD
Benign
17
DANN
Benign
0.72
DEOGEN2
Benign
0.099
T;.;T;.;.;.;.
Eigen
Benign
-0.64
Eigen_PC
Benign
-0.70
FATHMM_MKL
Benign
0.064
N
LIST_S2
Benign
0.61
T;T;T;T;T;T;T
MetaRNN
Benign
0.0068
T;T;T;T;T;T;T
MetaSVM
Benign
-1.0
T
MutationAssessor
Benign
-1.3
N;.;.;N;N;.;N
PhyloP100
0.12
PrimateAI
Benign
0.24
T
PROVEAN
Benign
0.030
N;N;N;.;N;.;.
REVEL
Benign
0.12
Sift
Benign
0.17
T;T;T;.;T;.;.
Sift4G
Benign
0.22
T;T;T;.;T;T;.
Polyphen
1.0
D;B;D;.;B;.;.
Vest4
0.18
MVP
0.66
MPC
0.54
ClinPred
0.020
T
GERP RS
2.0
Varity_R
0.22
gMVP
0.56
Mutation Taster
=99/1
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.14
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: rs60822373; hg19: chr1-207504467; API