chr17-35577445-T-A

Variant names:

• chr17-35577445-T-A
• rs28936698
• NM_000286.3:c.273A>T

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM2 PP3_Strong PP5

The NM_000286.3(PEX12):​c.273A>T​(p.Arg91Ser) 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 pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R91T) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PEX12 NM_000286.3 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: -0.363
• Publications: 2 publications found

Genes affected

PEX12 (HGNC:8854): (peroxisomal biogenesis factor 12) This gene belongs to the peroxin-12 family. Peroxins (PEXs) are proteins that are essential for the assembly of functional peroxisomes. The peroxisome biogenesis disorders (PBDs) are a group of genetically heterogeneous autosomal recessive, lethal diseases characterized by multiple defects in peroxisome function. The peroxisomal biogenesis disorders are a heterogeneous group with at least 14 complementation groups and with more than 1 phenotype being observed in cases falling into particular complementation groups. Although the clinical features of PBD patients vary, cells from all PBD patients exhibit a defect in the import of one or more classes of peroxisomal matrix proteins into the organelle. Defects in this gene are a cause of Zellweger syndrome (ZWS). [provided by RefSeq, Oct 2008]

PEX12 Gene-Disease associations (from GenCC):

• peroxisome biogenesis disorder

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• peroxisome biogenesis disorder 3A (Zellweger)

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Myriad Women’s Health, Labcorp Genetics (formerly Invitae), G2P
• peroxisome biogenesis disorder type 3B

  Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
• Zellweger spectrum disorders

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.979
• PP5: Variant 17-35577445-T-A is Pathogenic according to our data. Variant chr17-35577445-T-A is described in ClinVar as [Pathogenic]. Clinvar id is 7778.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PEX12	NM_000286.3	c.273A>T	p.Arg91Ser	missense_variant	Exon 2 of 3	ENST00000225873.9	NP_000277.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PEX12	ENST00000225873.9	c.273A>T	p.Arg91Ser	missense_variant	Exon 2 of 3	1	NM_000286.3	ENSP00000225873.3
PEX12	ENST00000586663.2	n.273A>T		non_coding_transcript_exon_variant	Exon 2 of 3	1		ENSP00000466894.2
PEX12	ENST00000585380.1	c.273A>T	p.Arg91Ser	missense_variant	Exon 3 of 3	4		ENSP00000466280.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Peroxisomal biogenesis disorder 3b Pathogenic:1

Feb 01, 2004

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.38	D
BayesDel_noAF	Pathogenic	0.31
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.68	D;D;D
Eigen	Benign	-0.10
Eigen_PC	Benign	-0.30
FATHMM_MKL	Benign	0.34	N
LIST_S2	Uncertain	0.91	.;D;D
M_CAP	Uncertain	0.22	D
MetaRNN	Pathogenic	0.98	D;D;D
MetaSVM	Uncertain	-0.022	T
MutationAssessor	Uncertain	2.7	M;M;.
PhyloP100		-0.36
PrimateAI	Uncertain	0.63	T
PROVEAN	Pathogenic	-5.8	D;.;.
REVEL	Pathogenic	0.70
Sift	Uncertain	0.0020	D;.;.
Sift4G	Pathogenic	0.0	D;D;D
Polyphen		1.0	D;D;.
Vest4		0.98
MutPred		0.95		Gain of ubiquitination at K90 (P = 0.0338);Gain of ubiquitination at K90 (P = 0.0338);Gain of ubiquitination at K90 (P = 0.0338);
MVP		0.81
MPC		0.78
ClinPred		1.0	D
GERP RS		-3.7
Varity_R		0.96
gMVP		0.92
Mutation Taster		=4/96	disease causing (ClinVar)

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: rs28936698; hg19: chr17-33904464;