Genetic Variant INPP5E:c.1549+23A>C (chr9-136431801-T-G) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_019892.6(INPP5E):c.1549+23A>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000172 in 640,372 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000023 ( 0 hom., cov: 4)

Exomes 𝑓: 0.00017 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

INPP5E
NM_019892.6 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -2.60

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: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.94).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
INPP5E	NM_019892.6 link	c.1549+23A>C		intron_variant	Intron 7 of 9	ENST00000371712.4	NP_063945.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
INPP5E	ENST00000371712.4 link	c.1549+23A>C		intron_variant	Intron 7 of 9	1	NM_019892.6	ENSP00000360777.3
INPP5E	ENST00000676019.1 link	c.1447+23A>C		intron_variant	Intron 7 of 9			ENSP00000501984.1

Frequencies

GnomAD3 genomes

AF:

0.0000229

AC:

AN:

43590

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:

0.0000461

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.000172

AC:

110

AN:

640372

Hom.:

Cov.:

AF XY:

0.000155

AC XY:

AN XY:

323186

show subpopulations

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

African (AFR)

AF:

0.000127

AC:

AN:

15708

American (AMR)

AF:

0.000207

AC:

AN:

19360

Ashkenazi Jewish (ASJ)

AF:

0.000794

AC:

AN:

10078

East Asian (EAS)

AF:

0.000701

AC:

AN:

15696

South Asian (SAS)

AF:

0.0000375

AC:

AN:

53402

European-Finnish (FIN)

AF:

0.000718

AC:

AN:

19496

Middle Eastern (MID)

AF:

0.000426

AC:

AN:

2348

European-Non Finnish (NFE)

AF:

0.000134

AC:

AN:

478730

Other (OTH)

AF:

0.000157

AC:

AN:

25554

⚠️ 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: 0.293

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

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000229

AC:

AN:

43604

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

20746

show subpopulations

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

African (AFR)

AF:

0.00

AC:

AN:

10630

American (AMR)

AF:

0.00

AC:

AN:

4538

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

1024

East Asian (EAS)

AF:

0.00

AC:

AN:

1428

South Asian (SAS)

AF:

0.00

AC:

AN:

1022

European-Finnish (FIN)

AF:

0.00

AC:

AN:

2386

Middle Eastern (MID)

AF:

0.00

AC:

AN:

European-Non Finnish (NFE)

AF:

0.0000461

AC:

AN:

21702

Other (OTH)

AF:

0.00

AC:

AN:

560

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 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: 0.275

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.94

CADD

Benign

1.5

(source)

DANN

Benign

0.18

PhyloP100

-2.6

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over