Genetic Variant PLSCR4:p.Ile219Thr (chr3-146196762-A-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_020353.3(PLSCR4):c.656T>C(p.Ile219Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000421 in 1,613,928 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000040 ( 0 hom. )

Consequence

PLSCR4
NM_020353.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.70

Variant links:

Genes affected

PLSCR4 (HGNC:16497): (phospholipid scramblase 4) Enables CD4 receptor binding activity and enzyme binding activity. Predicted to be involved in plasma membrane phospholipid scrambling. Predicted to act upstream of or within cellular response to lipopolysaccharide. Located in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

PLSCR4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PLSCR4	NM_020353.3 link	c.656T>C	p.Ile219Thr	missense_variant	Exon 7 of 9	ENST00000354952.7	NP_065086.2	Q9NRQ2-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PLSCR4	ENST00000354952.7 link	c.656T>C	p.Ile219Thr	missense_variant	Exon 7 of 9	1	NM_020353.3	ENSP00000347038.2		Q9NRQ2-1

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152156

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000837

AC:

AN:

250848

Hom.:

AF XY:

0.0000369

AC XY:

AN XY:

135632

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000493

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000404

AC:

AN:

1461654

Hom.:

Cov.:

AF XY:

0.0000275

AC XY:

AN XY:

727120

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.000381

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000297

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152274

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74454

show subpopulations

Gnomad4 AFR

AF:

0.000120

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000900

Hom.:

Bravo

AF:

0.0000831

ExAC

AF:

0.0000741

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 17, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.656T>C (p.I219T) alteration is located in exon 7 (coding exon 6) of the PLSCR4 gene. This alteration results from a T to C substitution at nucleotide position 656, causing the isoleucine (I) at amino acid position 219 to be replaced by a threonine (T). 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

-0.15

BayesDel_noAF

Benign

-0.12

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.17

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

Eigen

Uncertain

0.21

Eigen_PC

Benign

0.15

FATHMM_MKL

Uncertain

0.89

LIST_S2

Benign

0.84

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

M_CAP

Benign

0.038

MetaRNN

Uncertain

0.53

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

MetaSVM

Benign

-0.89

MutationAssessor

Pathogenic

3.1

M;.;.;M;M;.;.

PrimateAI

Benign

0.47

PROVEAN

Uncertain

-3.9

D;D;D;D;D;D;N

REVEL

Benign

0.26

Sift

Uncertain

0.0030

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

Sift4G

Uncertain

0.0080

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

Polyphen

1.0

D;B;.;D;D;.;.

Vest4

0.72

MutPred

0.81

Loss of stability (P = 0.0386);.;.;Loss of stability (P = 0.0386);Loss of stability (P = 0.0386);Loss of stability (P = 0.0386);.;

MVP

0.40

MPC

0.39

ClinPred

0.40

GERP RS

2.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.72

gMVP

0.72

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

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