Genetic Variant PITPNM2:p.Ala1335Thr (chr12-122986074-C-T) – ACMG Classification: Benign (-10 pts)

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_020845.3(PITPNM2):c.4003G>A(p.Ala1335Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000391 in 1,432,036 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000036 ( 0 hom. )

Consequence

PITPNM2
NM_020845.3 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.200

Variant links:

Genes affected

PITPNM2 (HGNC:21044): (phosphatidylinositol transfer protein membrane associated 2) PITPNM2 belongs to a family of membrane-associated phosphatidylinositol transfer domain-containing proteins that share homology with the Drosophila retinal degeneration B (rdgB) protein (Ocaka et al., 2005 [PubMed 15627748]).[supplied by OMIM, Mar 2008]

PITPNM2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.026560396).

BP6

Variant 12-122986074-C-T is Benign according to our data. Variant chr12-122986074-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 3418837.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAd4 at 10 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PITPNM2	NM_020845.3 link	c.4003G>A	p.Ala1335Thr	missense_variant	Exon 26 of 26	ENST00000320201.10	NP_065896.1	Q9BZ72-1Q9UF51

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PITPNM2	ENST00000320201.10 link	c.4003G>A	p.Ala1335Thr	missense_variant	Exon 26 of 26	5	NM_020845.3	ENSP00000322218.4		Q9BZ72-1
PITPNM2	ENST00000280562.9 link	c.3985G>A	p.Ala1329Thr	missense_variant	Exon 25 of 25	5		ENSP00000280562.5		Q9BZ72-2

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152224

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000359

AC:

AN:

1279812

Hom.:

Cov.:

AF XY:

0.0000399

AC XY:

AN XY:

626306

show subpopulations

Gnomad4 AFR exome

AF:

0.0000799

Gnomad4 AMR exome

AF:

0.0000540

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000415

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000657

AC:

AN:

152224

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74370

show subpopulations

Gnomad4 AFR

AF:

0.000169

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000142

Hom.:

Bravo

AF:

0.0000567

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Benign:1

Oct 07, 2024

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.065

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.68

CADD

Benign

4.5

DANN

Benign

0.97

DEOGEN2

Benign

0.053

T;.;T

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.064

LIST_S2

Benign

0.73

.;T;T

M_CAP

Benign

0.0099

MetaRNN

Benign

0.027

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.69

N;.;N

PrimateAI

Uncertain

0.56

PROVEAN

Benign

-0.41

N;N;N

REVEL

Benign

0.033

Sift

Benign

0.42

T;T;T

Sift4G

Benign

0.11

T;T;T

Polyphen

0.0020

B;B;B

Vest4

0.045

MutPred

0.24

Gain of catalytic residue at W1332 (P = 0);.;Gain of catalytic residue at W1332 (P = 0);

MVP

0.082

MPC

0.95

ClinPred

0.21

GERP RS

-2.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.034

gMVP

0.19

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over