NM_019892.6:c.1732G>A

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 3P and 2B. PM1PP2BP4_Moderate

The NM_019892.6(INPP5E):c.1732G>A(p.Gly578Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000161 in 1,554,234 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

INPP5E
NM_019892.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 1.31

Publications

0 publications found

Variant links:

Genes affected

INPP5E (HGNC:21474): (inositol polyphosphate-5-phosphatase E) The protein encoded by this gene is an inositol 1,4,5-trisphosphate (InsP3) 5-phosphatase. InsP3 5-phosphatases hydrolyze Ins(1,4,5)P3, which mobilizes intracellular calcium and acts as a second messenger mediating cell responses to various stimulation. Studies of the mouse counterpart suggest that this protein may hydrolyze phosphatidylinositol 3,4,5-trisphosphate and phosphatidylinositol 3,5-bisphosphate on the cytoplasmic Golgi membrane and thereby regulate Golgi-vesicular trafficking. Mutations in this gene cause Joubert syndrome; a clinically and genetically heterogenous group of disorders characterized by midbrain-hindbrain malformation and various associated ciliopathies that include retinal dystrophy, nephronophthisis, liver fibrosis and polydactyly. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jan 2016]

INPP5E Gene-Disease associations (from GenCC):

Joubert syndrome 1
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, ClinGen, Labcorp Genetics (formerly Invitae), G2P
MORM syndrome
Inheritance: AR Classification: DEFINITIVE, MODERATE, SUPPORTIVE, LIMITED Submitted by: Ambry Genetics, G2P, Genomics England PanelApp, ClinGen, Orphanet
COACH syndrome 1
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Joubert syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Joubert syndrome with ocular defect
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

INPP5E links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM1

In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 6 uncertain in NM_019892.6

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 31 curated pathogenic missense variants (we use a threshold of 10). The gene has 6 curated benign missense variants. Gene score misZ: 0.50742 (below the threshold of 3.09). Trascript score misZ: -1.9401 (below the threshold of 3.09). GenCC associations: The gene is linked to Joubert syndrome with ocular defect, MORM syndrome, Joubert syndrome 1, Joubert syndrome, COACH syndrome 1.

BP4

Computational evidence support a benign effect (MetaRNN=0.1813876).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
INPP5E	NM_019892.6 link	c.1732G>A	p.Gly578Arg	missense_variant	Exon 9 of 10	ENST00000371712.4	NP_063945.2	Q9NRR6-1
INPP5E	NM_001318502.2 link	c.1729G>A	p.Gly577Arg	missense_variant	Exon 9 of 10		NP_001305431.1	Q9NRR6
INPP5E	XM_017014926.2 link	c.1732G>A	p.Gly578Arg	missense_variant	Exon 9 of 10		XP_016870415.1
INPP5E	XM_047423603.1 link	c.1729G>A	p.Gly577Arg	missense_variant	Exon 9 of 10		XP_047279559.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
INPP5E	ENST00000371712.4 link	c.1732G>A	p.Gly578Arg	missense_variant	Exon 9 of 10	1	NM_019892.6	ENSP00000360777.3	Q9NRR6-1
INPP5E	ENST00000676019.1 link	c.1630G>A	p.Gly544Arg	missense_variant	Exon 9 of 10			ENSP00000501984.1	Q9NRR6-2
INPP5E	ENST00000674693.1 link	n.249G>A		non_coding_transcript_exon_variant	Exon 2 of 2

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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:

0.00

GnomAD2 exomes

AF:

0.0000623

AC:

AN:

160526

AF XY:

0.0000473

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000321

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:

0.000222

GnomAD4 exome

AF:

0.0000150

AC:

AN:

1401928

Hom.:

Cov.:

AF XY:

0.0000145

AC XY:

AN XY:

691664

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31898

American (AMR)

AF:

0.000279

AC:

AN:

35810

Ashkenazi Jewish (ASJ)

AF:

0.0000397

AC:

AN:

25184

East Asian (EAS)

AF:

0.00

AC:

AN:

36380

South Asian (SAS)

AF:

0.0000378

AC:

AN:

79408

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49326

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5698

European-Non Finnish (NFE)

AF:

0.00000648

AC:

AN:

1080070

Other (OTH)

AF:

0.00

AC:

AN:

58154

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.451

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152306

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74462

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41568

American (AMR)

AF:

0.000261

AC:

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68018

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.513

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000189

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 30, 2014

Genetic Services Laboratory, University of Chicago

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

INPP5E-related disorder

Uncertain:1

May 29, 2024

PreventionGenetics, part of Exact Sciences

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

The INPP5E c.1732G>A variant is predicted to result in the amino acid substitution p.Gly578Arg. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.035% of alleles in individuals of Latino descent in gnomAD. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Inborn genetic diseases

Uncertain:1

Apr 11, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1732G>A (p.G578R) alteration is located in exon 9 (coding exon 9) of the INPP5E gene. This alteration results from a G to A substitution at nucleotide position 1732, causing the glycine (G) at amino acid position 578 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Joubert syndrome

Uncertain:1

Oct 13, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 578 of the INPP5E protein (p.Gly578Arg). This variant is present in population databases (rs559636009, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with INPP5E-related conditions. ClinVar contains an entry for this variant (Variation ID: 211184). 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) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on INPP5E 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. -

not provided

Uncertain:1

Apr 17, 2023

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 23386033) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.34

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.22

Eigen

Benign

-0.56

Eigen_PC

Benign

-0.58

FATHMM_MKL

Benign

0.067

LIST_S2

Uncertain

0.89

M_CAP

Uncertain

0.13

MetaRNN

Benign

0.18

MetaSVM

Benign

-0.88

MutationAssessor

Benign

0.42

PhyloP100

1.3

PrimateAI

Benign

0.39

PROVEAN

Benign

-1.6

REVEL

Benign

0.18

Sift

Benign

0.063

Sift4G

Benign

0.53

Polyphen

0.53

Vest4

0.31

MutPred

0.46

Gain of MoRF binding (P = 0.0245);

MVP

0.76

MPC

0.42

ClinPred

0.043

GERP RS

3.6

Varity_R

0.12

gMVP

0.56

Mutation Taster

=95/5

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.12

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

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over