chr5-37125401-T-C

Variant names:

• chr5-37125401-T-C
• rs1014698599
• NM_001384732.1:c.8801A>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001384732.1(CPLANE1):​c.8801A>G​(p.His2934Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Failed GnomAD Quality Control
• Consequence: CPLANE1 NM_001384732.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -1.39
• Publications: 0 publications found

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]

CPLANE1 Gene-Disease associations (from GenCC):

• Joubert syndrome 17

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, ClinGen, G2P, Illumina, Labcorp Genetics (formerly Invitae)
• orofaciodigital syndrome type 6

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, G2P
• Joubert syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.047095984).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001384732.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CPLANE1	NM_001384732.1	MANE Select	c.8801A>G	p.His2934Arg	missense	Exon 47 of 53	NP_001371661.1
	CPLANE1	NM_023073.4		c.8639A>G	p.His2880Arg	missense	Exon 46 of 52	NP_075561.3

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CPLANE1	ENST00000651892.2	MANE Select	c.8801A>G	p.His2934Arg	missense	Exon 47 of 53	ENSP00000498265.2
	CPLANE1	ENST00000514429.5	TSL:1	c.5837A>G	p.His1946Arg	missense	Exon 31 of 37	ENSP00000424223.1
	CPLANE1	ENST00000509849.5	TSL:1	n.*143A>G		non_coding_transcript_exon	Exon 31 of 37	ENSP00000426337.1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152252 Hom.: 0 Cov.: 32

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: 0.00

Gnomad OTH AF: 0.000478

GnomAD4 exome Cov.: 30

GnomAD4 genome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000657 AC: 1 AN: 152252 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74394

African (AFR) AF: 0.00 AC: 0 AN: 41466

American (AMR) AF: 0.00 AC: 0 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5204

South Asian (SAS) AF: 0.00 AC: 0 AN: 4838

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10626

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68044

Other (OTH) AF: 0.000478 AC: 1 AN: 2090

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Jul 06, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces histidine, which is basic and polar, with arginine, which is basic and polar, at codon 2880 of the C5orf42 protein (p.His2880Arg). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with C5orf42-related conditions. ClinVar contains an entry for this variant (Variation ID: 571945). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt C5orf42 protein function. 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 v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.074
BayesDel_addAF	Benign	-0.37	T
BayesDel_noAF	Benign	-0.77
CADD	Benign	0.16
DANN	Benign	0.56
DEOGEN2	Benign	0.025	T
Eigen	Benign	-1.2
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.013	N
LIST_S2	Benign	0.51	T
M_CAP	Benign	0.0025	T
MetaRNN	Benign	0.047	T
MetaSVM	Benign	-1.0	T
PhyloP100		-1.4
PROVEAN	Benign	-1.3	N
REVEL	Benign	0.022
Sift	Benign	0.65	T
Sift4G	Benign	0.26	T
Vest4		0.10
MVP		0.11
MPC		0.15
ClinPred		0.024	T
GERP RS		-2.8
Varity_R		0.035
gMVP		0.062
Mutation Taster		=96/4	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

Other links and lift over

dbSNP: rs1014698599; hg19: chr5-37125503;