chr9-136429827-G-A

Position:

• chr9-136429827-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_019892.6(INPP5E):​c.1803-20C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00101 in 1,610,946 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.00054 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0011 (3 hom.)
• Consequence: INPP5E NM_019892.6 intron
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -0.477

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]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.94).
• BP6: Variant 9-136429827-G-A is Benign according to our data. Variant chr9-136429827-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 261201.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population nfe. gnomad4_exome allele frequency = 0.00106 (1552/1459088) while in subpopulation NFE AF= 0.00129 (1429/1111002). AF 95% confidence interval is 0.00123. There are 3 homozygotes in gnomad4_exome. There are 717 alleles in male gnomad4_exome subpopulation. Median coverage is 33. This position pass quality control queck.
• BS2: High Homozygotes in GnomAdExome4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
INPP5E	NM_019892.6	c.1803-20C>T		intron_variant		ENST00000371712.4
INPP5E	NM_001318502.2	c.1800-20C>T		intron_variant
INPP5E	XM_017014926.2	c.1803-67C>T		intron_variant
INPP5E	XM_047423603.1	c.1800-67C>T		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
INPP5E	ENST00000371712.4	c.1803-20C>T		intron_variant		1	NM_019892.6	P1
INPP5E	ENST00000676019.1	c.1701-20C>T		intron_variant

Frequencies

GnomAD3 genomes AF: 0.000540 AC: 82 AN: 151740 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000242

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000262

Gnomad ASJ AF: 0.000577

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000972

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000402 AC: 100 AN: 249046 Hom.: 0 AF XY: 0.000348 AC XY: 47 AN XY: 134956

Gnomad AFR exome AF: 0.000125

Gnomad AMR exome AF: 0.000203

Gnomad ASJ exome AF: 0.0000999

Gnomad EAS exome AF: 0.0000545

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000774

Gnomad OTH exome AF: 0.000329

GnomAD4 exome AF: 0.00106 AC: 1552 AN: 1459088 Hom.: 3 Cov.: 33 AF XY: 0.000988 AC XY: 717 AN XY: 725884

Gnomad4 AFR exome AF: 0.000180

Gnomad4 AMR exome AF: 0.000224

Gnomad4 ASJ exome AF: 0.000153

Gnomad4 EAS exome AF: 0.0000504

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00129

Gnomad4 OTH exome AF: 0.00168

GnomAD4 genome AF: 0.000540 AC: 82 AN: 151858 Hom.: 0 Cov.: 32 AF XY: 0.000431 AC XY: 32 AN XY: 74226

Gnomad4 AFR AF: 0.000241

Gnomad4 AMR AF: 0.000262

Gnomad4 ASJ AF: 0.000577

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000972

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000990 Hom.: 0

Bravo AF: 0.000593

ClinVar

Significance: Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:2

Likely benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Aug 23, 2017	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Familial aplasia of the vermis Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jan 09, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.94
CADD	Benign	0.068
DANN	Benign	0.49

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs190316580; hg19: chr9-139324279;