1-2405321-C-T

Variant names:

• chr1-2405321-C-T
• rs557941413
• NM_002617.4:c.*445G>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BS1 BS2

The NM_002617.4(PEX10):​c.*445G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00151 in 330,406 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.00035 (1 hom., cov: 34)
  • Exomes 𝑓: 0.0025 (4 hom.)
• Consequence: PEX10 NM_002617.4 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.726
• Publications: 0 publications found

Genes affected

PEX10 (HGNC:8851): (peroxisomal biogenesis factor 10) This gene encodes a protein involved in import of peroxisomal matrix proteins. This protein localizes to the peroxisomal membrane. Mutations in this gene result in phenotypes within the Zellweger spectrum of peroxisomal biogenesis disorders, ranging from neonatal adrenoleukodystrophy to Zellweger syndrome. Alternative splicing results in two transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]

RER1 (HGNC:30309): (retention in endoplasmic reticulum sorting receptor 1) The protein encoded by this gene is a multi-pass membrane protein that is localized to the golgi apparatus. It is involved in the retention of endoplasmic reticulum (ER) membrane proteins in the ER and retrieval of ER membrane proteins from the early Golgi compartment to facilitate gamma-secretase complex assembly. [provided by RefSeq, Oct 2009]

ACMG classification

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

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.94).
• BS1: Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.000355 (54/152318) while in subpopulation SAS AF = 0.011 (53/4828). AF 95% confidence interval is 0.00862. There are 1 homozygotes in GnomAd4. There are 40 alleles in the male GnomAd4 subpopulation. Median coverage is 34. This position passed quality control check.
• BS2: High Homozygotes in GnomAdExome4 at 4 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PEX10	NM_002617.4	c.*445G>A		3_prime_UTR_variant	Exon 6 of 6	ENST00000447513.7	NP_002608.1
RER1	NM_007033.5	c.*2197C>T		3_prime_UTR_variant	Exon 7 of 7	ENST00000605895.6	NP_008964.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PEX10	ENST00000447513.7	c.*445G>A		3_prime_UTR_variant	Exon 6 of 6	1	NM_002617.4	ENSP00000407922.2
RER1	ENST00000605895.6	c.*2197C>T		3_prime_UTR_variant	Exon 7 of 7	1	NM_007033.5	ENSP00000475168.1

Frequencies

GnomAD3 genomes AF: 0.000355 AC: 54 AN: 152200 Hom.: 1 Cov.: 34

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: 0.0110

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00250 AC: 445 AN: 178088 Hom.: 4 Cov.: 0 AF XY: 0.00359 AC XY: 350 AN XY: 97406

African (AFR) AF: 0.00 AC: 0 AN: 4724

American (AMR) AF: 0.00 AC: 0 AN: 7510

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 4178

East Asian (EAS) AF: 0.00 AC: 0 AN: 6774

South Asian (SAS) AF: 0.0120 AC: 431 AN: 36026

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 7666

Middle Eastern (MID) AF: 0.00161 AC: 1 AN: 620

European-Non Finnish (NFE) AF: 0.0000294 AC: 3 AN: 101986

Other (OTH) AF: 0.00116 AC: 10 AN: 8604

GnomAD4 genome AF: 0.000355 AC: 54 AN: 152318 Hom.: 1 Cov.: 34 AF XY: 0.000537 AC XY: 40 AN XY: 74486

African (AFR) AF: 0.00 AC: 0 AN: 41578

American (AMR) AF: 0.00 AC: 0 AN: 15302

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5178

South Asian (SAS) AF: 0.0110 AC: 53 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10620

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68020

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000680

Asia WGS AF: 0.00491 AC: 17 AN: 3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Peroxisome biogenesis disorder 6A (Zellweger) Uncertain:1

Jan 22, 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. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.94
CADD	Benign	1.3
DANN	Benign	0.63
PhyloP100		-0.73
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0
Mutation Taster		=100/0	polymorphism

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

Other links and lift over

dbSNP: rs557941413; hg19: chr1-2336760;