Genetic Variant CPLANE2:p.Asn232Ile (chr1-16232130-T-A) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_030907.4(CPLANE2):c.695A>T(p.Asn232Ile) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,220 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. N232S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

CPLANE2
NM_030907.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 5.65

Publications

0 publications found

Variant links:

Genes affected

CPLANE2 (HGNC:28127): (ciliogenesis and planar polarity effector complex subunit 2) Predicted to enable GTP binding activity and GTPase activity. Predicted to be involved in cellular protein localization; cilium assembly; and regulation of vesicle-mediated transport. Predicted to be located in ciliary basal body. [provided by Alliance of Genome Resources, Apr 2022]

CPLANE2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.88

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_030907.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CPLANE2	NM_030907.4	MANE Select	c.695A>T	p.Asn232Ile	missense	Exon 5 of 5	NP_112169.2	Q9BU20

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CPLANE2	ENST00000375599.8	TSL:1 MANE Select	c.695A>T	p.Asn232Ile	missense	Exon 5 of 5	ENSP00000364749.2	Q9BU20
CPLANE2	ENST00000945441.1		c.794A>T	p.Asn265Ile	missense	Exon 5 of 5	ENSP00000615500.1
CPLANE2	ENST00000434014.1	TSL:5	c.*151A>T		downstream_gene	N/A	ENSP00000406390.1	H0Y6L8

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000400

AC:

AN:

250262

AF XY:

0.00

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461220

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726966

show subpopulations

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

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52792

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111986

Other (OTH)

AF:

0.00

AC:

AN:

60390

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.325

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.83

BayesDel_addAF

Uncertain

0.11

BayesDel_noAF

Uncertain

0.020

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.25

Eigen

Uncertain

0.49

Eigen_PC

Uncertain

0.48

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.85

M_CAP

Uncertain

0.19

MetaRNN

Pathogenic

0.88

MetaSVM

Benign

-0.45

PhyloP100

5.6

PrimateAI

Uncertain

0.63

PROVEAN

Pathogenic

-5.1

REVEL

Uncertain

0.46

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0010

Polyphen

1.0

Vest4

0.79

MutPred

0.66

Loss of sheet (P = 0.0228)

MVP

0.55

MPC

0.53

ClinPred

0.99

GERP RS

5.5

Varity_R

0.81

gMVP

0.95

Mutation Taster

=55/45

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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over