chr7-92518165-GTTGATCAACCCAAA-TTGC

Variant names:

• chr7-92518165-GTTGATCAACCCAAA-TTGC
• rs62653598
• NM_000466.3:c.434_448delTTTGGGTTGATCAACinsGCAA

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1 PP5_Moderate

The NM_000466.3(PEX1):​c.434_448delTTTGGGTTGATCAACinsGCAA​(p.Val145GlyfsTer24) variant causes a frameshift, missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type DEL_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. Variant has been reported in ClinVar as Pathogenic (★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PEX1 NM_000466.3 frameshift, missense
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 7.94
• Publications: 0 publications found

Genes affected

PEX1 (HGNC:8850): (peroxisomal biogenesis factor 1) This gene encodes a member of the AAA ATPase family, a large group of ATPases associated with diverse cellular activities. This protein is cytoplasmic but is often anchored to a peroxisomal membrane where it forms a heteromeric complex and plays a role in the import of proteins into peroxisomes and peroxisome biogenesis. Mutations in this gene have been associated with complementation group 1 peroxisomal disorders such as neonatal adrenoleukodystrophy, infantile Refsum disease, and Zellweger syndrome. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Sep 2013]

PEX1 Gene-Disease associations (from GenCC):

• peroxisome biogenesis disorder

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• peroxisome biogenesis disorder 1A (Zellweger)

  Inheritance: AR Classification: DEFINITIVE Submitted by: Myriad Women’s Health, Ambry Genetics
• Heimler syndrome 1

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: PanelApp Australia, G2P, Ambry Genetics
• peroxisome biogenesis disorder 1B

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
• Zellweger spectrum disorders

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000244055 (HGNC:):

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PP5: Variant 7-92518165-GTTGATCAACCCAAA-TTGC is Pathogenic according to our data. Variant chr7-92518165-GTTGATCAACCCAAA-TTGC is described in ClinVar as Pathogenic. ClinVar VariationId is 3594947.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PEX1	NM_000466.3	c.434_448delTTTGGGTTGATCAACinsGCAA	p.Val145GlyfsTer24	frameshift_variant, missense_variant	Exon 4 of 24	ENST00000248633.9	NP_000457.1
PEX1	NM_001282677.2	c.434_448delTTTGGGTTGATCAACinsGCAA	p.Val145GlyfsTer24	frameshift_variant, missense_variant	Exon 4 of 23		NP_001269606.1
PEX1	XM_047420472.1	c.434_448delTTTGGGTTGATCAACinsGCAA	p.Val145GlyfsTer24	frameshift_variant, missense_variant	Exon 4 of 23		XP_047276428.1
PEX1	NM_001282678.2	c.-191_-177delTTTGGGTTGATCAACinsGCAA		5_prime_UTR_variant	Exon 4 of 24		NP_001269607.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PEX1	ENST00000248633.9	c.434_448delTTTGGGTTGATCAACinsGCAA	p.Val145GlyfsTer24	frameshift_variant, missense_variant	Exon 4 of 24	1	NM_000466.3	ENSP00000248633.4

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Peroxisome biogenesis disorder 1B;C4551980:Heimler syndrome 1;C4721541:Peroxisome biogenesis disorder 1A (Zellweger) Pathogenic:1

Jun 11, 2024

Fulgent Genetics, Fulgent Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		7.9
Mutation Taster		=1/199	disease causing (fs/PTC)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs62653598; hg19: chr7-92147479;