Genetic Variant CIBAR2:p.Arg158Gly (chr16-85105392-G-C) – ACMG Classification: Likely_pathogenic (6 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_198491.3(CIBAR2):c.472C>G(p.Arg158Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,198 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. R158C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Consequence

CIBAR2
NM_198491.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.25

Publications

0 publications found

Variant links:

Genes affected

CIBAR2 (HGNC:24781): (CBY1 interacting BAR domain containing 2) Predicted to be involved in cilium assembly. Predicted to be located in centriole and cytoplasm. Predicted to be active in ciliary basal body and ciliary transition zone. [provided by Alliance of Genome Resources, Apr 2022]

CIBAR2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.971

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CIBAR2	NM_198491.3 link	c.472C>G	p.Arg158Gly	missense_variant	Exon 6 of 9	ENST00000539556.6	NP_940893.1	Q6ZTR7A0A1X7SC74
CIBAR2	NM_001366920.1 link	c.472C>G	p.Arg158Gly	missense_variant	Exon 6 of 9		NP_001353849.1
CIBAR2	XM_011523063.2 link	c.472C>G	p.Arg158Gly	missense_variant	Exon 6 of 10		XP_011521365.1	Q6ZTR7A0A1X7SC74
CIBAR2	XM_017023198.2 link	c.472C>G	p.Arg158Gly	missense_variant	Exon 6 of 10		XP_016878687.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CIBAR2	ENST00000539556.6 link	c.472C>G	p.Arg158Gly	missense_variant	Exon 6 of 9	5	NM_198491.3	ENSP00000443411.1		A0A1X7SC74
CIBAR2	ENST00000618669.3 link	c.187C>G	p.Arg63Gly	missense_variant	Exon 4 of 7	5		ENSP00000478373.1		A0A087WU51

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152198

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:

0.00

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

Cov.:

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152198

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74366

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

41440

American (AMR)

AF:

0.00

AC:

AN:

15284

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5204

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68032

Other (OTH)

AF:

0.00

AC:

AN:

2090

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.225

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Pathogenic

0.28

BayesDel_noAF

Pathogenic

0.17

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.29

.;T

Eigen

Uncertain

0.62

Eigen_PC

Uncertain

0.53

FATHMM_MKL

Uncertain

0.83

LIST_S2

Benign

0.71

T;T

M_CAP

Benign

0.073

MetaRNN

Pathogenic

0.97

D;D

MetaSVM

Uncertain

-0.16

MutationAssessor

Pathogenic

3.2

.;M

PhyloP100

3.3

PrimateAI

Benign

0.23

PROVEAN

Pathogenic

-6.0

D;.

REVEL

Uncertain

0.49

Sift

Uncertain

0.0010

D;.

Sift4G

Uncertain

0.0040

D;D

Polyphen

1.0

.;D

Vest4

0.65

MutPred

0.83

Loss of MoRF binding (P = 0.0189);Loss of MoRF binding (P = 0.0189);

MVP

0.52

MPC

0.28

ClinPred

0.99

GERP RS

5.1

Varity_R

0.60

gMVP

0.34

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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over