rs780265931

Positions:

chr2-231276775-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP5_Moderate

The NM_001352754.2(ARMC9):c.1474G>A(p.Gly492Arg) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000124 in 1,613,852 control chromosomes in the GnomAD database, with no homozygous occurrence. 2/2 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

ARMC9
NM_001352754.2 missense, splice_region

Scores

Splicing: ADA: 1.000

Clinical Significance

Likely pathogenic criteria provided, single submitter P:5

Conservation

PhyloP100: 4.43

Variant links:

Genes affected

ARMC9 (HGNC:20730): (armadillo repeat containing 9) Predicted to be involved in cilium assembly and positive regulation of smoothened signaling pathway. Located in centriole and ciliary basal body. Implicated in Joubert syndrome 30. [provided by Alliance of Genome Resources, Apr 2022]

ARMC9 links:

ARMC9 (HGNC:):

ARMC9 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 2-231276775-G-A is Pathogenic according to our data. Variant chr2-231276775-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 427935.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr2-231276775-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ARMC9	NM_001352754.2 linkuse as main transcript	c.1474G>A	p.Gly492Arg	missense_variant, splice_region_variant	15/25	ENST00000611582.5	NP_001339683.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ARMC9	ENST00000611582.5 linkuse as main transcript	c.1474G>A	p.Gly492Arg	missense_variant, splice_region_variant	15/25	5	NM_001352754.2	ENSP00000484804.1		Q7Z3E5-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152196

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

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251010

Hom.:

AF XY:

0.00000737

AC XY:

AN XY:

135634

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000882

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461656

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727124

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152196

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74362

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:5

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

ARMC9-related Joubert syndrome

Pathogenic:1

Pathogenic, no assertion criteria provided

research

UW Hindbrain Malformation Research Program, University of Washington

May 01, 2017

- -

Joubert syndrome 30

Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Aug 16, 2017

- -

Dandy-Walker syndrome

Pathogenic:1

Likely pathogenic, no assertion criteria provided

research

University of Washington Center for Mendelian Genomics, University of Washington

- -

not provided

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Apr 07, 2022

Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. ClinVar contains an entry for this variant (Variation ID: 427935). This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 492 of the ARMC9 protein (p.Gly492Arg). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with Joubert syndrome (PMID: 28625504). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. -

Familial aplasia of the vermis

Pathogenic:1

Likely pathogenic, no assertion criteria provided

research

University of Washington Center for Mendelian Genomics, University of Washington

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.30

BayesDel_noAF

Pathogenic

0.19

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.58

.;D;D;T

Eigen

Uncertain

0.65

Eigen_PC

Uncertain

0.56

FATHMM_MKL

Uncertain

0.96

LIST_S2

Pathogenic

0.99

D;D;.;D

M_CAP

Benign

0.063

MetaRNN

Uncertain

0.73

D;D;D;D

MetaSVM

Benign

-0.44

MutationAssessor

Uncertain

2.7

.;M;M;.

PrimateAI

Uncertain

0.62

PROVEAN

Pathogenic

-6.1

D;.;.;D

REVEL

Uncertain

0.37

Sift

Pathogenic

0.0

D;.;.;D

Sift4G

Uncertain

0.0020

D;D;D;D

Polyphen

1.0

.;D;D;.

Vest4

0.54

MutPred

0.40

Gain of solvent accessibility (P = 0.006);Gain of solvent accessibility (P = 0.006);Gain of solvent accessibility (P = 0.006);.;

MVP

0.82

MPC

0.90

ClinPred

0.99

GERP RS

4.2

Varity_R

0.45

gMVP

0.85

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

SpliceAI score (max)

0.95

Details are displayed if max score is > 0.2

DS_DL_spliceai

0.95

Position offset: 0

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over