rs149959295

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001994.3(F13B):​c.1979G>T​(p.Arg660Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000373 in 1,610,274 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R660K) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)
Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

F13B
NM_001994.3 missense

Scores

1
3
15

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.291

Publications

0 publications found
Variant links:
Genes affected
F13B (HGNC:3534): (coagulation factor XIII B chain) This gene encodes coagulation factor XIII B subunit. Coagulation factor XIII is the last zymogen to become activated in the blood coagulation cascade. Plasma factor XIII is a heterotetramer composed of 2 A subunits and 2 B subunits. The A subunits have catalytic function, and the B subunits do not have enzymatic activity and may serve as a plasma carrier molecules. Platelet factor XIII is comprised only of 2 A subunits, which are identical to those of plasma origin. Upon activation by the cleavage of the activation peptide by thrombin and in the presence of calcium ion, the plasma factor XIII dissociates its B subunits and yields the same active enzyme, factor XIIIa, as platelet factor XIII. This enzyme acts as a transglutaminase to catalyze the formation of gamma-glutamyl-epsilon-lysine crosslinking between fibrin molecules, thus stabilizing the fibrin clot. Factor XIII deficiency is classified into two categories: type I deficiency, characterized by the lack of both the A and B subunits; and type II deficiency, characterized by the lack of the A subunit alone. These defects can result in a lifelong bleeding tendency, defective wound healing, and habitual abortion. [provided by RefSeq, Jul 2008]
F13B Gene-Disease associations (from GenCC):
  • factor XIII, b subunit, deficiency of
    Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Ambry Genetics
  • congenital factor XIII deficiency
    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 0 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.109707445).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
F13BNM_001994.3 linkc.1979G>T p.Arg660Ile missense_variant Exon 12 of 12 ENST00000367412.2 NP_001985.2 P05160

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
F13BENST00000367412.2 linkc.1979G>T p.Arg660Ile missense_variant Exon 12 of 12 1 NM_001994.3 ENSP00000356382.2 P05160
F13BENST00000649282.1 linkc.734G>T p.Arg245Ile missense_variant Exon 5 of 5 ENSP00000497116.1 A0A3B3IS66

Frequencies

GnomAD3 genomes
AF:
0.0000132
AC:
2
AN:
151948
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000483
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000120
AC:
3
AN:
250822
AF XY:
0.0000148
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000265
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000274
AC:
4
AN:
1458326
Hom.:
0
Cov.:
28
AF XY:
0.00000413
AC XY:
3
AN XY:
725604
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33390
American (AMR)
AF:
0.00
AC:
0
AN:
44680
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26036
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39480
South Asian (SAS)
AF:
0.00
AC:
0
AN:
85864
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53274
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5758
European-Non Finnish (NFE)
AF:
0.00000360
AC:
4
AN:
1109602
Other (OTH)
AF:
0.00
AC:
0
AN:
60242
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.463
Heterozygous variant carriers
0
1
1
2
2
3
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:
0.0000132
AC:
2
AN:
151948
Hom.:
0
Cov.:
33
AF XY:
0.0000135
AC XY:
1
AN XY:
74196
show subpopulations
African (AFR)
AF:
0.0000483
AC:
2
AN:
41396
American (AMR)
AF:
0.00
AC:
0
AN:
15254
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5202
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4830
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10564
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
314
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
67918
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.575
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.0000113
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.00000824
AC:
1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.13
BayesDel_addAF
Benign
-0.065
T
BayesDel_noAF
Benign
-0.27
CADD
Benign
11
DANN
Benign
0.96
DEOGEN2
Benign
0.26
.;T
Eigen
Benign
-0.96
Eigen_PC
Benign
-0.99
FATHMM_MKL
Benign
0.19
N
LIST_S2
Benign
0.63
T;T
M_CAP
Uncertain
0.17
D
MetaRNN
Benign
0.11
T;T
MetaSVM
Benign
-0.52
T
MutationAssessor
Uncertain
2.1
.;M
PhyloP100
0.29
PrimateAI
Benign
0.34
T
PROVEAN
Benign
-1.1
.;N
REVEL
Benign
0.18
Sift
Uncertain
0.0070
.;D
Sift4G
Pathogenic
0.0
.;D
Polyphen
0.0010
.;B
Vest4
0.25
MVP
0.74
MPC
0.53
ClinPred
0.31
T
GERP RS
2.4
Varity_R
0.12
gMVP
0.31
Mutation Taster
=95/5
polymorphism

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: rs149959295; hg19: chr1-197008515; API