rs779935583

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001206999.2(CIT):​c.6137G>T​(p.Gly2046Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000134 in 1,497,314 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)
Exomes 𝑓: 7.4e-7 ( 0 hom. )

Consequence

CIT
NM_001206999.2 missense

Scores

9
10

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.25

Publications

1 publications found
Variant links:
Genes affected
CIT (HGNC:1985): (citron rho-interacting serine/threonine kinase) This gene encodes a serine/threonine-protein kinase that functions in cell division. Together with the kinesin KIF14, this protein localizes to the central spindle and midbody, and functions to promote efficient cytokinesis. This protein is involved in central nervous system development. Polymorphisms in this gene are associated with bipolar disorder and risk for schizophrenia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2011]
CIT Gene-Disease associations (from GenCC):
  • microcephaly 17, primary, autosomal recessive
    Inheritance: AR Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
  • autosomal recessive primary microcephaly
    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 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CITNM_001206999.2 linkc.6137G>T p.Gly2046Val missense_variant Exon 47 of 48 ENST00000392521.7 NP_001193928.1 O14578-4

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CITENST00000392521.7 linkc.6137G>T p.Gly2046Val missense_variant Exon 47 of 48 1 NM_001206999.2 ENSP00000376306.2 O14578-4

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152196
Hom.:
0
Cov.:
31
show subpopulations
Gnomad AFR
AF:
0.0000241
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:
0.00000658
AC:
1
AN:
152014
AF XY:
0.00
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000585
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
7.43e-7
AC:
1
AN:
1345118
Hom.:
0
Cov.:
31
AF XY:
0.00000151
AC XY:
1
AN XY:
660758
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
27994
American (AMR)
AF:
0.0000377
AC:
1
AN:
26558
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
20740
East Asian (EAS)
AF:
0.00
AC:
0
AN:
35424
South Asian (SAS)
AF:
0.00
AC:
0
AN:
67582
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
40608
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5318
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1065178
Other (OTH)
AF:
0.00
AC:
0
AN:
55716
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
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152196
Hom.:
0
Cov.:
31
AF XY:
0.00
AC XY:
0
AN XY:
74346
show subpopulations
African (AFR)
AF:
0.0000241
AC:
1
AN:
41460
American (AMR)
AF:
0.00
AC:
0
AN:
15286
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5170
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4836
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10624
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68026
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
Alfa
AF:
0.0000712
Hom.:
0
Bravo
AF:
0.0000151

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Uncertain:1
Aug 15, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces glycine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 2046 of the CIT protein (p.Gly2046Val). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with CIT-related conditions. 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: "Benign"; Align-GVGD: "Class C0"). 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
Benign
0.10
BayesDel_addAF
Uncertain
0.068
T
BayesDel_noAF
Benign
-0.14
CADD
Uncertain
23
DANN
Uncertain
0.99
DEOGEN2
Benign
0.29
.;T
Eigen
Benign
0.17
Eigen_PC
Uncertain
0.33
FATHMM_MKL
Uncertain
0.96
D
LIST_S2
Uncertain
0.92
D;D
M_CAP
Benign
0.021
T
MetaRNN
Uncertain
0.50
D;D
MetaSVM
Benign
-0.77
T
MutationAssessor
Benign
0.69
.;N
PhyloP100
5.3
PrimateAI
Uncertain
0.71
T
PROVEAN
Benign
-1.2
N;N
REVEL
Benign
0.18
Sift
Uncertain
0.014
D;D
Sift4G
Uncertain
0.027
D;D
Polyphen
0.28
.;B
Vest4
0.77
MutPred
0.23
.;Loss of methylation at R2003 (P = 0.0642);
MVP
0.77
MPC
0.90
ClinPred
0.62
D
GERP RS
5.4
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.23
gMVP
0.19
Mutation Taster
=93/7
polymorphism

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: rs779935583; hg19: chr12-120128005; API