rs145988230

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 1P and 13B. PP2BP4_StrongBP6BS1BS2

The NM_001166114.2(PNPLA6):c.2359G>A(p.Val787Met) variant causes a missense change. The variant allele was found at a frequency of 0.00217 in 1,614,138 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0016 ( 1 hom., cov: 32)

Exomes 𝑓: 0.0022 ( 3 hom. )

Consequence

PNPLA6
NM_001166114.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:9

Conservation

PhyloP100: 4.71

Publications

7 publications found

Variant links:

Genes affected

PNPLA6 (HGNC:16268): (patatin like phospholipase domain containing 6) This gene encodes a phospholipase that deacetylates intracellular phosphatidylcholine to produce glycerophosphocholine. It is thought to function in neurite outgrowth and process elongation during neuronal differentiation. The protein is anchored to the cytoplasmic face of the endoplasmic reticulum in both neurons and non-neuronal cells. Mutations in this gene result in autosomal recessive spastic paraplegia, and the protein is the target for neurodegeneration induced by organophosphorus compounds and chemical warfare agents. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2009]

PNPLA6 Gene-Disease associations (from GenCC):

ataxia-hypogonadism-choroidal dystrophy syndrome
Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: G2P, Orphanet
PNPLA6-related spastic paraplegia with or without ataxia
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
retinal dystrophy-ataxia-pituitary hormone abnormality-hypogonadism syndrome
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
hereditary spastic paraplegia 39
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
cerebellar ataxia-hypogonadism syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Laurence-Moon syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
trichomegaly-retina pigmentary degeneration-dwarfism syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

PNPLA6 links:

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ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -12 ACMG points.

PP2

Missense variant in the PNPLA6 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 29 curated pathogenic missense variants (we use a threshold of 10). The gene has 7 curated benign missense variants. Gene score misZ: 4.3547 (above the threshold of 3.09). Trascript score misZ: 3.5139 (above the threshold of 3.09). GenCC associations: The gene is linked to retinal dystrophy-ataxia-pituitary hormone abnormality-hypogonadism syndrome, cerebellar ataxia-hypogonadism syndrome, PNPLA6-related spastic paraplegia with or without ataxia, ataxia-hypogonadism-choroidal dystrophy syndrome, trichomegaly-retina pigmentary degeneration-dwarfism syndrome, hereditary spastic paraplegia 39, Laurence-Moon syndrome.

BP4

Computational evidence support a benign effect (MetaRNN=0.008301556).

BP6

Variant 19-7553973-G-A is Benign according to our data. Variant chr19-7553973-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 425159.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.00158 (240/152270) while in subpopulation NFE AF = 0.00281 (191/68020). AF 95% confidence interval is 0.00248. There are 1 homozygotes in GnomAd4. There are 100 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PNPLA6	NM_001166114.2 link	c.2359G>A	p.Val787Met	missense_variant	Exon 19 of 32	ENST00000600737.6	NP_001159586.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PNPLA6	ENST00000600737.6 link	c.2359G>A	p.Val787Met	missense_variant	Exon 19 of 32	1	NM_001166114.2	ENSP00000473211.1

Frequencies

GnomAD3 genomes

AF:

0.00158

AC:

240

AN:

152152

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000555

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000720

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00186

Gnomad FIN

AF:

0.000377

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00281

Gnomad OTH

AF:

0.000956

GnomAD2 exomes

AF:

0.00175

AC:

440

AN:

251372

AF XY:

0.00174

show subpopulations

Gnomad AFR exome

AF:

0.000615

Gnomad AMR exome

AF:

0.000983

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000832

Gnomad NFE exome

AF:

0.00279

Gnomad OTH exome

AF:

0.00244

GnomAD4 exome

AF:

0.00223

AC:

3267

AN:

1461868

Hom.:

Cov.:

AF XY:

0.00228

AC XY:

1657

AN XY:

727236

show subpopulations

African (AFR)

AF:

0.000299

AC:

AN:

33480

American (AMR)

AF:

0.000961

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00172

AC:

148

AN:

86258

European-Finnish (FIN)

AF:

0.000974

AC:

AN:

53398

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00260

AC:

2895

AN:

1112008

Other (OTH)

AF:

0.00197

AC:

119

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.472

Heterozygous variant carriers

183

366

550

733

916

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

108

216

324

432

540

<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:

0.00158

AC:

240

AN:

152270

Hom.:

Cov.:

AF XY:

0.00134

AC XY:

100

AN XY:

74456

show subpopulations

African (AFR)

AF:

0.000554

AC:

AN:

41548

American (AMR)

AF:

0.000719

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00186

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.000377

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00281

AC:

191

AN:

68020

Other (OTH)

AF:

0.000946

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

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:

0.00234

Hom.:

Bravo

AF:

0.00156

TwinsUK

AF:

0.00216

AC:

ALSPAC

AF:

0.00208

AC:

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.00279

AC:

ExAC

AF:

0.00185

AC:

224

Asia WGS

AF:

0.00115

AC:

AN:

3478

EpiCase

AF:

0.00256

EpiControl

AF:

0.00249

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:9

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Hereditary spastic paraplegia 39

Uncertain:1Benign:4

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Oct 09, 2014

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Feb 02, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

May 05, 2017

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Uncertain:1Benign:3

Jan 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

PNPLA6: BP4 -

May 03, 2021

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is associated with the following publications: (PMID: 30564185) -

Clinical Genetics, Academic Medical Center

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Jun 18, 2020

Mayo Clinic Laboratories, Mayo Clinic

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Hereditary spastic paraplegia

Uncertain:1

Feb 01, 2018

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Benign:1

Apr 05, 2021

Athena Diagnostics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

PNPLA6-related disorder

Benign:1

Dec 29, 2022

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.097

BayesDel_addAF

Benign

-0.64

BayesDel_noAF

Benign

-0.69

CADD

Benign

(source)

DANN

Uncertain

0.98

Eigen

Benign

-0.52

Eigen_PC

Benign

-0.40

FATHMM_MKL

Uncertain

0.78

LIST_S2

Uncertain

0.88

.;D;D;D;D

M_CAP

Benign

0.017

MetaRNN

Benign

0.0083

T;T;T;T;T

MetaSVM

Benign

-0.98

PhyloP100

4.7

PrimateAI

Benign

0.40

PROVEAN

Benign

-0.47

N;N;N;N;.

REVEL

Benign

0.092

Sift

Benign

0.13

T;T;T;T;.

Sift4G

Benign

0.077

T;T;T;T;T

Polyphen

0.061

B;.;.;B;.

Vest4

0.092

MVP

0.29

MPC

0.93

ClinPred

0.020

GERP RS

0.20

Varity_R

0.035

gMVP

0.65

Mutation Taster

=87/13

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over