ENST00000266095.9:c.44C>T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBS1_Supporting

The ENST00000266095.9(PISD):c.44C>T(p.Ala15Val) variant causes a missense change. The variant allele was found at a frequency of 0.000124 in 1,592,184 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. A15A) has been classified as Benign.

Frequency

Genomes: 𝑓 0.00019 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00012 ( 0 hom. )

Consequence

PISD
ENST00000266095.9 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.89

Publications

2 publications found

Variant links:

Genes affected

PISD (HGNC:8999): (phosphatidylserine decarboxylase) The protein encoded by this gene catalyzes the conversion of phosphatidylserine to phosphatidylethanolamine in the inner mitochondrial membrane. The encoded protein is active in phospholipid metabolism and interorganelle trafficking of phosphatidylserine. [provided by RefSeq, May 2016]

PISD Gene-Disease associations (from GenCC):

Liberfarb syndrome
Inheritance: AR Classification: STRONG, MODERATE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Franklin by Genoox, G2P

PISD links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.026309818).

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.00019 (29/152320) while in subpopulation AMR AF = 0.00137 (21/15312). AF 95% confidence interval is 0.000918. There are 0 homozygotes in GnomAd4. There are 23 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000266095.9. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
PISD	NM_001326411.2	MANE Select	c.322-3887C>T		intron	N/A	NP_001313340.1
PISD	NM_001326415.2		c.44C>T	p.Ala15Val	missense	Exon 3 of 9	NP_001313344.1
PISD	NM_001326416.2		c.44C>T	p.Ala15Val	missense	Exon 5 of 11	NP_001313345.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
PISD	ENST00000266095.9	TSL:1	c.44C>T	p.Ala15Val	missense	Exon 3 of 9	ENSP00000266095.5
PISD	ENST00000439502.7	TSL:1 MANE Select	c.322-3887C>T		intron	N/A	ENSP00000391739.2
PISD	ENST00000460723.5	TSL:1	n.329-3887C>T		intron	N/A

Frequencies

GnomAD3 genomes

AF:

0.000191

AC:

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00137

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000222

AC:

AN:

212132

AF XY:

0.000253

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00103

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000610

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000648

Gnomad OTH exome

AF:

0.000935

GnomAD4 exome

AF:

0.000117

AC:

168

AN:

1439864

Hom.:

Cov.:

AF XY:

0.000125

AC XY:

AN XY:

714166

show subpopulations

African (AFR)

AF:

0.0000301

AC:

AN:

33194

American (AMR)

AF:

0.000931

AC:

AN:

41884

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25626

East Asian (EAS)

AF:

0.0000258

AC:

AN:

38772

South Asian (SAS)

AF:

0.000302

AC:

AN:

82876

European-Finnish (FIN)

AF:

0.0000196

AC:

AN:

50892

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5746

European-Non Finnish (NFE)

AF:

0.0000763

AC:

AN:

1101388

Other (OTH)

AF:

0.000286

AC:

AN:

59486

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.469

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000190

AC:

AN:

152320

Hom.:

Cov.:

AF XY:

0.000309

AC XY:

AN XY:

74480

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41560

American (AMR)

AF:

0.00137

AC:

AN:

15312

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.000207

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68026

Other (OTH)

AF:

0.000473

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.513

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000217

Hom.:

Bravo

AF:

0.000208

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.0000998

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Aug 02, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.44C>T (p.A15V) alteration is located in exon 3 (coding exon 1) of the PISD gene. This alteration results from a C to T substitution at nucleotide position 44, causing the alanine (A) at amino acid position 15 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.45

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.013

Eigen

Benign

-0.55

Eigen_PC

Benign

-0.45

FATHMM_MKL

Benign

0.66

LIST_S2

Benign

0.72

M_CAP

Benign

0.010

MetaRNN

Benign

0.026

MetaSVM

Benign

-1.1

PhyloP100

4.9

PrimateAI

Uncertain

0.67

PROVEAN

Benign

-0.070

REVEL

Benign

0.047

Sift

Benign

0.11

Sift4G

Benign

0.26

Polyphen

0.0

Vest4

0.23

MVP

0.043

MPC

0.30

ClinPred

0.029

GERP RS

3.9

Mutation Taster

=99/1

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over