rs140695185

Positions:

chr11-45914684-T-C

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_004813.4(PEX16):c.461A>G(p.Asp154Gly) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000669 in 1,613,782 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00025 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000048 ( 0 hom. )

Consequence

PEX16
NM_004813.4 missense, splice_region

Scores

Splicing: ADA: 0.0002515

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:7

Conservation

PhyloP100: 0.887

Variant links:

Genes affected

PEX16 (HGNC:8857): (peroxisomal biogenesis factor 16) The protein encoded by this gene is an integral peroxisomal membrane protein. An inactivating nonsense mutation localized to this gene was observed in a patient with Zellweger syndrome of the complementation group CGD/CG9. Expression of this gene product morphologically and biochemically restores the formation of new peroxisomes, suggesting a role in peroxisome organization and biogenesis. Alternative splicing has been observed for this gene and two variants have been described. [provided by RefSeq, Jul 2008]

PEX16 links:

PEX16 (HGNC:):

PEX16 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.028835416).

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000249 (38/152320) while in subpopulation AFR AF= 0.000722 (30/41564). AF 95% confidence interval is 0.000519. There are 0 homozygotes in gnomad4. There are 18 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PEX16	NM_004813.4 linkuse as main transcript	c.461A>G	p.Asp154Gly	missense_variant, splice_region_variant	6/11	ENST00000378750.10	NP_004804.2	Q9Y5Y5-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PEX16	ENST00000378750.10 linkuse as main transcript	c.461A>G	p.Asp154Gly	missense_variant, splice_region_variant	6/11	1	NM_004813.4	ENSP00000368024.5		Q9Y5Y5-1

Frequencies

GnomAD3 genomes

AF:

0.000237

AC:

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000676

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:

0.00633

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.000479

GnomAD3 exomes

AF:

0.0000637

AC:

AN:

251370

Hom.:

AF XY:

0.0000515

AC XY:

AN XY:

135860

show subpopulations

Gnomad AFR exome

AF:

0.000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000440

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000479

AC:

AN:

1461462

Hom.:

Cov.:

AF XY:

0.0000468

AC XY:

AN XY:

727052

show subpopulations

Gnomad4 AFR exome

AF:

0.00111

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000135

Gnomad4 OTH exome

AF:

0.000132

GnomAD4 genome

AF:

0.000249

AC:

AN:

152320

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

AN XY:

74482

show subpopulations

Gnomad4 AFR

AF:

0.000722

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:

0.0000294

Gnomad4 OTH

AF:

0.000474

Alfa

AF:

0.000587

Hom.:

Bravo

AF:

0.000329

ESP6500AA

AF:

0.00113

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000824

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	Sep 27, 2022	BP4 -
Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Mar 08, 2017	- -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 09, 2021

The c.461A>G (p.D154G) alteration is located in exon 6 (coding exon 6) of the PEX16 gene. This alteration results from a A to G substitution at nucleotide position 461, causing the aspartic acid (D) at amino acid position 154 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Peroxisome biogenesis disorder 8A (Zellweger);C3553960:Peroxisome biogenesis disorder 8B

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Oct 31, 2018

- -

Peroxisome biogenesis disorder

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 28, 2022

This sequence change replaces aspartic acid, which is acidic and polar, with glycine, which is neutral and non-polar, at codon 154 of the PEX16 protein (p.Asp154Gly). This variant is present in population databases (rs140695185, gnomAD 0.09%). This variant has not been reported in the literature in individuals affected with PEX16-related conditions. ClinVar contains an entry for this variant (Variation ID: 500755). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The glycine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

PEX16-related disorder

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Jul 18, 2023

The PEX16 c.461A>G variant is predicted to result in the amino acid substitution p.Asp154Gly. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.084% of alleles in individuals of African descent in gnomAD (http://gnomad.broadinstitute.org/variant/11-45936235-T-C), which may be too common to be an undocumented primary cause of disease. Although we suspect that this variant may be benign, at this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Peroxisome biogenesis disorder 8A (Zellweger)

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Baylor Genetics

May 08, 2018

This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.063

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.51

CADD

Benign

DANN

Uncertain

0.97

DEOGEN2

Benign

0.22

.;T;.;.;T

Eigen

Benign

-0.46

Eigen_PC

Benign

-0.30

FATHMM_MKL

Benign

0.69

LIST_S2

Benign

0.69

T;T;T;T;T

M_CAP

Benign

0.013

MetaRNN

Benign

0.029

T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.1

L;L;.;.;.

PrimateAI

Benign

0.39

PROVEAN

Uncertain

-2.9

D;D;D;N;D

REVEL

Benign

0.016

Sift

Benign

0.090

T;T;T;D;T

Sift4G

Benign

0.18

T;T;T;T;.

Polyphen

0.0030

B;B;.;.;.

Vest4

0.15

MVP

0.33

MPC

0.46

ClinPred

0.022

GERP RS

2.4

Varity_R

0.15

gMVP

0.41

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00025

dbscSNV1_RF

Benign

0.0

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