1-10474992-A-G

Position:

• chr1-10474992-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_004565.3(PEX14):​c.26A>G​(p.Gln9Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q9L) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: PEX14 NM_004565.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.02

Genes affected

PEX14 (HGNC:8856): (peroxisomal biogenesis factor 14) This gene encodes an essential component of the peroxisomal import machinery. The protein is integrated into peroxisome membranes with its C-terminus exposed to the cytosol, and interacts with the cytosolic receptor for proteins containing a PTS1 peroxisomal targeting signal. The protein also functions as a transcriptional corepressor and interacts with a histone deacetylase. A mutation in this gene results in one form of Zellweger syndrome. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.10065985).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PEX14	NM_004565.3	c.26A>G	p.Gln9Arg	missense_variant	1/9	ENST00000356607.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PEX14	ENST00000356607.9	c.26A>G	p.Gln9Arg	missense_variant	1/9	1	NM_004565.3	P1
PEX14	ENST00000491661.2	c.11A>G	p.Gln4Arg	missense_variant	1/6	2
PEX14	ENST00000472851.1	n.293+2412A>G		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Peroxisome biogenesis disorder, complementation group K Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 02, 2021

This variant has not been reported in the literature in individuals affected with PEX14-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces glutamine, which is neutral and polar, with arginine, which is basic and polar, at codon 9 of the PEX14 protein (p.Gln9Arg). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Not Available"; Align-GVGD: "Class C0"). 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. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.48
CADD	Benign	19
DANN	Benign	0.95
DEOGEN2	Benign	0.33	T;T
Eigen	Benign	-0.40
Eigen_PC	Benign	-0.24
FATHMM_MKL	Benign	0.24	N
LIST_S2	Benign	0.62	T;T
M_CAP	Benign	0.010	T
MetaRNN	Benign	0.10	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.69	N;.
MutationTaster	Benign	1.0	D;N
PrimateAI	Benign	0.44	T
PROVEAN	Benign	-0.75	N;.
REVEL	Benign	0.13
Sift	Benign	0.056	T;.
Sift4G	Benign	0.60	T;T
Polyphen		0.023	B;.
Vest4		0.29
MutPred		0.049		Gain of glycosylation at P10 (P = 0.1516);.;
MVP		0.44
MPC		0.45
ClinPred		0.26	T
GERP RS		2.3
Varity_R		0.22
gMVP		0.24

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

Other links and lift over

dbSNP: rs201979629; hg19: chr1-10535049;