rs147416429

Positions:

• chr5-37153973-G-A

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_001384732.1(CPLANE1):​c.8140C>T​(p.Arg2714Ter) variant causes a stop gained change. The variant allele was found at a frequency of 0.0000247 in 1,458,048 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000025 (0 hom.)
• Consequence: CPLANE1 NM_001384732.1 stop_gained
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:4 U:1
• Conservation: PhyloP100: 3.75

Genes affected

CPLANE1 (HGNC:25801): (ciliogenesis and planar polarity effector complex subunit 1) The protein encoded by this gene has putative coiled-coil domains and may be a transmembrane protein. Defects in this gene are a cause of Joubert syndrome (JBTS). [provided by RefSeq, May 2012]

ACMG classification

Verdict is Pathogenic. Variant got 18 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 5-37153973-G-A is Pathogenic according to our data. Variant chr5-37153973-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 217566.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr5-37153973-G-A is described in Lovd as [Pathogenic]. Variant chr5-37153973-G-A is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CPLANE1	NM_001384732.1	c.8140C>T	p.Arg2714Ter	stop_gained	42/53	ENST00000651892.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CPLANE1	ENST00000651892.2	c.8140C>T	p.Arg2714Ter	stop_gained	42/53		NM_001384732.1	A2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000200 AC: 5 AN: 249488 Hom.: 0 AF XY: 0.0000148 AC XY: 2 AN XY: 134794

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000109

Gnomad SAS 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: 0.0000247 AC: 36 AN: 1458048 Hom.: 0 Cov.: 31 AF XY: 0.0000248 AC XY: 18 AN XY: 724700

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.000177

Gnomad4 SAS exome AF: 0.0000117

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000243

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000119 Hom.: 0

Bravo AF: 0.00000756

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000116 AC: 1

ExAC AF: 0.0000330 AC: 4

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:4 Uncertain:1

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Joubert syndrome 17 Pathogenic:2 Uncertain:1

Pathogenic, no assertion criteria provided	clinical testing	Dr.Nikuei Genetic Center	-	- -
Uncertain significance, no assertion criteria provided	clinical testing	Neurology Department of Pediatrics, The Third Affiliated Hospital of Zhengzhou University	-	- -
Pathogenic, criteria provided, single submitter	research	UW Hindbrain Malformation Research Program, University of Washington	Feb 23, 2015	- -

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Sep 27, 2023

For these reasons, this variant has been classified as Pathogenic. ClinVar contains an entry for this variant (Variation ID: 217566). This variant is also known as C5ORF42 p.R2660X. This premature translational stop signal has been observed in individual(s) with Joubert syndrome (PMID: 22693042, 26092869, 33176815). This variant is present in population databases (rs147416429, gnomAD 0.01%). This sequence change creates a premature translational stop signal (p.Arg2660*) in the CPLANE1 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in CPLANE1 are known to be pathogenic (PMID: 24178751, 26092869). -

Orofaciodigital syndrome type 6 Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Baylor Genetics

Nov 18, 2019

This variant was determined to be pathogenic according to ACMG Guidelines, 2015 [PMID:25741868]. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.47	D
BayesDel_noAF	Pathogenic	0.29
CADD	Pathogenic	37
DANN	Uncertain	0.98
Eigen	Uncertain	0.37
Eigen_PC	Benign	0.10
FATHMM_MKL	Benign	0.38	N
MutationTaster	Benign	1.0	A;A;A
Vest4		0.12
GERP RS		5.2

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

LitVar

Other links and lift over

dbSNP: rs147416429; hg19: chr5-37154075; COSMIC: COSV99951041; COSMIC: COSV99951041;