Genetic Variant NM_001101669.3:c.2609A>C (chr4-142082064-T-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_001101669.3(INPP4B):c.2609A>C(p.Asp870Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000223 in 1,478,550 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

INPP4B
NM_001101669.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.67

Publications

1 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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.20437005).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
INPP4B	NM_001101669.3 link	c.2609A>C	p.Asp870Ala	missense_variant	Exon 25 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.2609A>C	p.Asp870Ala	missense_variant	Exon 25 of 26	5	NM_001101669.3	ENSP00000262992.4		O15327-1

Frequencies

GnomAD3 genomes

AF:

0.0000789

AC:

AN:

152108

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000655

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:

0.000478

GnomAD2 exomes

AF:

0.0000444

AC:

AN:

247674

AF XY:

0.0000597

show subpopulations

Gnomad AFR exome

AF:

0.0000619

Gnomad AMR exome

AF:

0.000210

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000178

Gnomad OTH exome

AF:

0.000167

GnomAD4 exome

AF:

0.0000158

AC:

AN:

1326324

Hom.:

Cov.:

AF XY:

0.0000231

AC XY:

AN XY:

648340

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32254

American (AMR)

AF:

0.000208

AC:

AN:

43172

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

23144

East Asian (EAS)

AF:

0.00

AC:

AN:

38228

South Asian (SAS)

AF:

0.00

AC:

AN:

62200

European-Finnish (FIN)

AF:

0.00

AC:

AN:

47134

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5216

European-Non Finnish (NFE)

AF:

0.00000979

AC:

AN:

1021642

Other (OTH)

AF:

0.0000375

AC:

AN:

53334

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.465

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000788

AC:

AN:

152226

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74422

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41560

American (AMR)

AF:

0.000654

AC:

AN:

15284

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4814

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10588

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68012

Other (OTH)

AF:

0.000473

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000225

Hom.:

Bravo

AF:

0.0000982

ExAC

AF:

0.0000412

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 14, 2021

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.2609A>C (p.D870A) alteration is located in exon 26 (coding exon 22) of the INPP4B gene. This alteration results from a A to C substitution at nucleotide position 2609, causing the aspartic acid (D) at amino acid position 870 to be replaced by an alanine (A). 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

Uncertain

0.53

BayesDel_addAF

Uncertain

0.029

BayesDel_noAF

Uncertain

0.080

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.53

D;D;D;T;T

Eigen

Uncertain

0.64

Eigen_PC

Pathogenic

0.68

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.95

.;D;.;D;D

M_CAP

Benign

0.030

MetaRNN

Benign

0.20

T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.7

L;L;L;.;.

PhyloP100

7.7

PrimateAI

Pathogenic

0.82

PROVEAN

Uncertain

-3.0

D;D;D;D;D

REVEL

Uncertain

0.33

Sift

Benign

0.051

T;T;T;D;D

Sift4G

Benign

0.14

T;T;T;T;.

Polyphen

1.0

D;D;D;.;.

Vest4

0.85

MVP

0.29

MPC

0.83

ClinPred

0.40

GERP RS

6.1

Varity_R

0.38

gMVP

0.74

Mutation Taster

=41/59

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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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NM_001101669.3:c.2609A>C

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