Genetic Variant INPP4B:p.Gln732His (chr4-142112622-C-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_001101669.3(INPP4B):c.2196G>C(p.Gln732His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,460,982 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: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

INPP4B
NM_001101669.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.563

Publications

0 publications found

Variant links:

Genes affected

INPP4B (HGNC:6075): (inositol polyphosphate-4-phosphatase type II B) INPP4B encodes the inositol polyphosphate 4-phosphatase type II, one of the enzymes involved in phosphatidylinositol signaling pathways. This enzyme removes the phosphate group at position 4 of the inositol ring from inositol 3,4-bisphosphate. There is limited data to suggest that the human type II enzyme is subject to alternative splicing, as has been established for the type I enzyme. [provided by RefSeq, Jul 2008]

INPP4B 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=0.19959986).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
INPP4B	NM_001101669.3 link	c.2196G>C	p.Gln732His	missense_variant	Exon 22 of 26	ENST00000262992.9	NP_001095139.1	O15327-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
INPP4B	ENST00000262992.9 link	c.2196G>C	p.Gln732His	missense_variant	Exon 22 of 26	5	NM_001101669.3	ENSP00000262992.4		O15327-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1460982

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726846

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33412

American (AMR)

AF:

0.00

AC:

AN:

44660

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26108

East Asian (EAS)

AF:

0.00

AC:

AN:

39630

South Asian (SAS)

AF:

0.00

AC:

AN:

86224

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53408

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5752

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111454

Other (OTH)

AF:

0.00

AC:

AN:

60334

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

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:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 13, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.2196G>C (p.Q732H) alteration is located in exon 23 (coding exon 19) of the INPP4B gene. This alteration results from a G to C substitution at nucleotide position 2196, causing the glutamine (Q) at amino acid position 732 to be replaced by a histidine (H). 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

0.15

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.53

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.23

T;T;T;T;T;.;T

Eigen

Benign

-0.18

Eigen_PC

Benign

-0.054

FATHMM_MKL

Uncertain

0.90

LIST_S2

Uncertain

0.93

.;D;.;D;D;D;D

M_CAP

Benign

0.010

MetaRNN

Benign

0.20

T;T;T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.34

N;N;N;.;.;.;.

PhyloP100

0.56

PrimateAI

Benign

0.37

PROVEAN

Benign

-2.1

N;N;N;N;N;N;N

REVEL

Benign

0.032

Sift

Uncertain

0.0010

D;D;D;D;D;D;D

Sift4G

Uncertain

0.0040

D;D;D;D;.;.;D

Polyphen

0.35

B;B;B;.;.;.;.

Vest4

0.31

MutPred

0.32

Loss of catalytic residue at Q732 (P = 0.1106);Loss of catalytic residue at Q732 (P = 0.1106);Loss of catalytic residue at Q732 (P = 0.1106);Loss of catalytic residue at Q732 (P = 0.1106);.;Loss of catalytic residue at Q732 (P = 0.1106);.;

MVP

0.13

MPC

0.39

ClinPred

0.85

GERP RS

4.0

Varity_R

0.19

gMVP

0.42

Mutation Taster

=81/19

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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over