Genetic Variant INPP5A:p.Asp138Gly (chr10-132697858-A-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_005539.5(INPP5A):c.413A>G(p.Asp138Gly) variant causes a missense change. The variant allele was found at a frequency of 0.00000205 in 1,461,706 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

INPP5A
NM_005539.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.68

Publications

0 publications found

Variant links:

Genes affected

INPP5A (HGNC:6076): (inositol polyphosphate-5-phosphatase A) The protein encoded by this gene is a membrane-associated type I 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. [provided by RefSeq, Jul 2008]

INPP5A links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.21902856).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
INPP5A	NM_005539.5 link	c.413A>G	p.Asp138Gly	missense_variant	Exon 6 of 16	ENST00000368594.8	NP_005530.3	Q14642

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
INPP5A	ENST00000368594.8 link	c.413A>G	p.Asp138Gly	missense_variant	Exon 6 of 16	1	NM_005539.5	ENSP00000357583.3		Q14642

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1461706

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727152

show subpopulations

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

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44714

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86240

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53396

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000270

AC:

AN:

1111890

Other (OTH)

AF:

0.00

AC:

AN:

60388

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.013624), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.392

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 22, 2022

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.413A>G (p.D138G) alteration is located in exon 6 (coding exon 6) of the INPP5A gene. This alteration results from a A to G substitution at nucleotide position 413, causing the aspartic acid (D) at amino acid position 138 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.23

BayesDel_addAF

Uncertain

0.026

BayesDel_noAF

Benign

-0.20

CADD

Benign

(source)

DANN

Benign

0.18

DEOGEN2

Benign

0.15

T;T;.

Eigen

Benign

-0.15

Eigen_PC

Benign

-0.026

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.94

D;D;D

M_CAP

Benign

0.012

MetaRNN

Benign

0.22

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.66

N;.;.

PhyloP100

6.7

PrimateAI

Uncertain

0.69

PROVEAN

Benign

1.7

N;N;N

REVEL

Benign

0.26

Sift

Benign

1.0

T;T;T

Sift4G

Benign

1.0

T;T;T

Polyphen

0.14

B;D;.

Vest4

0.51

MutPred

0.54

Loss of ubiquitination at K133 (P = 0.0517);Loss of ubiquitination at K133 (P = 0.0517);.;

MVP

0.36

MPC

1.7

ClinPred

0.82

GERP RS

5.1

Varity_R

0.22

gMVP

0.64

Mutation Taster

=55/45

polymorphism

(source)

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

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10-132697858-A-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over