Genetic Variant SPPL3:p.Ile272Val (chr12-120767553-T-C) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_139015.5(SPPL3):c.814A>G(p.Ile272Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000576 in 1,614,238 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000060 ( 3 hom. )

Consequence

SPPL3
NM_139015.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.58

Variant links:

Genes affected

SPPL3 (HGNC:30424): (signal peptide peptidase like 3) Enables aspartic endopeptidase activity, intramembrane cleaving and protein homodimerization activity. Involved in several processes, including T cell receptor signaling pathway; positive regulation of calcineurin-NFAT signaling cascade; and positive regulation of protein dephosphorylation. Located in Golgi-associated vesicle membrane; plasma membrane; and rough endoplasmic reticulum. Is integral component of cytoplasmic side of endoplasmic reticulum membrane and integral component of lumenal side of endoplasmic reticulum membrane. [provided by Alliance of Genome Resources, Apr 2022]

SPPL3 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.253201).

BS2

High Homozygotes in GnomAdExome4 at 3 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SPPL3	NM_139015.5 link	c.814A>G	p.Ile272Val	missense_variant	Exon 9 of 11	ENST00000353487.7	NP_620584.2	Q8TCT6-2Q9UG23
SPPL3	XM_011537925.3 link	c.814A>G	p.Ile272Val	missense_variant	Exon 9 of 11		XP_011536227.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SPPL3	ENST00000353487.7 link	c.814A>G	p.Ile272Val	missense_variant	Exon 9 of 11	1	NM_139015.5	ENSP00000288680.4	Q8TCT6-2
SPPL3	ENST00000545209.1 link	n.348A>G		non_coding_transcript_exon_variant	Exon 2 of 4	1
SPPL3	ENST00000392495.7 link	n.1390A>G		non_coding_transcript_exon_variant	Exon 3 of 5	2

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152230

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00104

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000127

AC:

AN:

251408

Hom.:

AF XY:

0.000169

AC XY:

AN XY:

135882

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000980

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000602

AC:

AN:

1461890

Hom.:

Cov.:

AF XY:

0.0000853

AC XY:

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000951

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152348

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74486

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00104

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ExAC

AF:

0.0000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 01, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.814A>G (p.I272V) alteration is located in exon 9 (coding exon 9) of the SPPL3 gene. This alteration results from a A to G substitution at nucleotide position 814, causing the isoleucine (I) at amino acid position 272 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 v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.23

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.19

CADD

Uncertain

DANN

Uncertain

1.0

Eigen

Uncertain

0.28

Eigen_PC

Uncertain

0.42

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.94

M_CAP

Benign

0.013

MetaRNN

Benign

0.25

MetaSVM

Benign

-1.0

PrimateAI

Pathogenic

0.83

PROVEAN

Benign

-0.64

REVEL

Benign

0.12

Sift

Benign

0.29

Sift4G

Benign

0.12

Vest4

0.80

MVP

0.20

MPC

1.5

ClinPred

0.10

GERP RS

5.7

Varity_R

0.092

gMVP

0.77

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