Genetic Variant CIT:p.Arg2034Trp (chr12-119690237-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_001206999.2(CIT):c.6100C>T(p.Arg2034Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000582 in 1,547,418 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: 0.0000057 ( 0 hom. )

Consequence

CIT
NM_001206999.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.43

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

CIT links:

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
CIT	NM_001206999.2 link	c.6100C>T	p.Arg2034Trp	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
CIT	ENST00000392521.7 link	c.6100C>T	p.Arg2034Trp	missense_variant	Exon 47 of 48	1	NM_001206999.2	ENSP00000376306.2		O14578-4

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152194

Hom.:

Cov.:

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:

0.000194

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:

0.0000106

AC:

AN:

188030

AF XY:

0.00000945

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:

0.0000217

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000573

AC:

AN:

1395224

Hom.:

Cov.:

AF XY:

0.00000723

AC XY:

AN XY:

692000

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

29976

American (AMR)

AF:

0.00

AC:

AN:

31980

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

23662

East Asian (EAS)

AF:

0.00

AC:

AN:

37280

South Asian (SAS)

AF:

0.00

AC:

AN:

78348

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40338

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5542

European-Non Finnish (NFE)

AF:

0.00000734

AC:

AN:

1090188

Other (OTH)

AF:

0.00

AC:

AN:

57910

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.431

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152194

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74344

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41458

American (AMR)

AF:

0.00

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000194

AC:

AN:

5166

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68032

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000381

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Jul 26, 2022

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.6100C>T (p.R2034W) alteration is located in exon 47 (coding exon 46) of the CIT gene. This alteration results from a C to T substitution at nucleotide position 6100, causing the arginine (R) at amino acid position 2034 to be replaced by a tryptophan (W). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.79

BayesDel_addAF

Uncertain

0.15

BayesDel_noAF

Uncertain

-0.030

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.37

.;T

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.62

FATHMM_MKL

Uncertain

0.88

LIST_S2

Pathogenic

0.99

D;D

M_CAP

Benign

0.074

MetaRNN

Uncertain

0.63

D;D

MetaSVM

Uncertain

-0.089

MutationAssessor

Benign

0.90

.;L

PhyloP100

3.4

PrimateAI

Pathogenic

0.85

PROVEAN

Benign

-1.9

N;N

REVEL

Uncertain

0.46

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0010

D;D

Polyphen

1.0

.;D

Vest4

0.67

MVP

0.70

MPC

1.7

ClinPred

0.71

GERP RS

4.5

Varity_R

0.32

gMVP

0.45

Mutation Taster

=79/21

polymorphism

(source)

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

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chr12-119690237-G-A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over