6-32157917-C-G

Position:

chr6-32157917-C-G

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4BS2

The NM_005155.7(PPT2):c.703C>G(p.Gln235Glu) variant causes a missense change. The variant allele was found at a frequency of 0.0000168 in 1,609,372 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 0.000039 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

PPT2
NM_005155.7 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.02

Variant links:

Genes affected

PPT2 (HGNC:9326): (palmitoyl-protein thioesterase 2) This gene encodes a member of the palmitoyl-protein thioesterase family. The encoded glycosylated lysosomal protein has palmitoyl-CoA hydrolase activity in vitro, but does not hydrolyze palmitate from cysteine residues in proteins. Alternative splicing results in multiple transcript variants. Read-through transcription also exists between this gene and the downstream EGFL8 (EGF-like-domain, multiple 8) gene. [provided by RefSeq, Feb 2011]

PPT2 links:

PPT2-EGFL8 (HGNC:48343): (PPT2-EGFL8 readthrough (NMD candidate)) This locus represents naturally occurring read-through transcription between the neighboring PPT2 (palmitoyl-protein thioesterase 2) and EGFL8 (EGF-like-domain, multiple 8) genes located in the major histocompatibility complex class III region of chromosome 6. The read-through transcript is a candidate for nonsense-mediated mRNA decay (NMD), and is thus unlikely to produce a protein product. [provided by RefSeq, Feb 2011]

PPT2-EGFL8 links:

PPT2-EGFL8 (HGNC:):

PPT2-EGFL8 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.34523946).

BS2

High AC in GnomAd4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PPT2	NM_005155.7 linkuse as main transcript	c.703C>G	p.Gln235Glu	missense_variant	7/9	ENST00000324816.11	NP_005146.4	Q9UMR5-1A0A1U9X8D2
PPT2	NM_138717.3 linkuse as main transcript	c.721C>G	p.Gln241Glu	missense_variant	7/9		NP_619731.2	Q9UMR5-3
PPT2	NM_001204103.2 linkuse as main transcript	c.703C>G	p.Gln235Glu	missense_variant	7/9		NP_001191032.1	Q9UMR5-1A0A1U9X8D2
PPT2-EGFL8	NR_037861.1 linkuse as main transcript	n.1117C>G		non_coding_transcript_exon_variant	7/16

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PPT2	ENST00000324816.11 linkuse as main transcript	c.703C>G	p.Gln235Glu	missense_variant	7/9	1	NM_005155.7	ENSP00000320528.6		Q9UMR5-1
PPT2-EGFL8	ENST00000422437.5 linkuse as main transcript	n.703C>G		non_coding_transcript_exon_variant	7/21	5		ENSP00000457534.1

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152144

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:

0.00103

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000244

AC:

AN:

245590

Hom.:

AF XY:

0.0000374

AC XY:

AN XY:

133758

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000199

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000144

AC:

AN:

1457110

Hom.:

Cov.:

AF XY:

0.0000207

AC XY:

AN XY:

725068

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:

0.000221

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152262

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74436

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:

0.000473

Bravo

AF:

0.00000756

ExAC

AF:

0.0000254

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 17, 2022

The c.721C>G (p.Q241E) alteration is located in exon 7 (coding exon 7) of the PPT2 gene. This alteration results from a C to G substitution at nucleotide position 721, causing the glutamine (Q) at amino acid position 241 to be replaced by a glutamic acid (E). 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

0.12

BayesDel_addAF

Uncertain

0.15

BayesDel_noAF

Pathogenic

0.25

CADD

Uncertain

DANN

Uncertain

0.97

DEOGEN2

Uncertain

0.59

.;D;D;D;D;.

Eigen

Benign

-0.16

Eigen_PC

Benign

-0.051

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.93

D;.;D;.;.;D

M_CAP

Uncertain

0.14

MetaRNN

Benign

0.35

T;T;T;T;T;T

MetaSVM

Uncertain

0.21

MutationAssessor

Benign

1.7

.;L;L;L;L;.

PrimateAI

Uncertain

0.65

PROVEAN

Benign

-1.8

N;N;N;N;N;N

REVEL

Pathogenic

0.71

Sift

Benign

0.17

T;T;T;T;T;T

Sift4G

Benign

0.21

T;T;T;T;T;T

Polyphen

0.87

.;P;P;P;P;.

Vest4

0.50

MutPred

0.60

.;Gain of sheet (P = 0.1208);Gain of sheet (P = 0.1208);Gain of sheet (P = 0.1208);Gain of sheet (P = 0.1208);.;

MVP

0.82

MPC

1.1

ClinPred

0.31

GERP RS

4.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.50

gMVP

0.87

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