rs886037782

Variant names:

• chr6-42964882-C-A
• rs886037782
• NM_000287.4:c.2714G>T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3 PP5

The NM_000287.4(PEX6):​c.2714G>T​(p.Cys905Phe) variant causes a missense change. The variant allele was found at a frequency of 0.0000116 in 1,461,868 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000012 (0 hom.)
• Consequence: PEX6 NM_000287.4 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1 U:1
• Conservation: PhyloP100: 5.52

Genes affected

PEX6 (HGNC:8859): (peroxisomal biogenesis factor 6) This gene encodes a member of the AAA (ATPases associated with diverse cellular activities) family of ATPases. This member is a predominantly cytoplasmic protein, which plays a direct role in peroxisomal protein import and is required for PTS1 (peroxisomal targeting signal 1, a C-terminal tripeptide of the sequence ser-lys-leu) receptor activity. Mutations in this gene cause peroxisome biogenesis disorders of complementation group 4 and complementation group 6. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2015]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.826
• PP5: Variant 6-42964882-C-A is Pathogenic according to our data. Variant chr6-42964882-C-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 224322.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=1, Pathogenic=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PEX6	NM_000287.4	c.2714G>T	p.Cys905Phe	missense_variant	Exon 16 of 17	ENST00000304611.13	NP_000278.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PEX6	ENST00000304611.13	c.2714G>T	p.Cys905Phe	missense_variant	Exon 16 of 17	1	NM_000287.4	ENSP00000303511.8
PEX6	ENST00000244546	c.*250G>T		3_prime_UTR_variant	Exon 14 of 15	1		ENSP00000244546.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.0000116 AC: 17 AN: 1461868 Hom.: 0 Cov.: 34 AF XY: 0.00000825 AC XY: 6 AN XY: 727234

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000144

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1 Uncertain:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Heimler syndrome 2 Pathogenic:1

Oct 01, 2015

Leeds Amelogenesis Imperfecta Research Group, University of Leeds

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: research

Newly identified -

not specified Uncertain:1

Oct 18, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: PEX6 c.2714G>T (p.Cys905Phe) results in a non-conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant was absent in 251476 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.2714G>T has been reported in the presumed compound heterozygous state in the literature in at least 1 individual affected with clinical features of Zellweger Syndrome (example, Smith_2016). These data do not allow any conclusion about variant significance. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publication has been ascertained in the context of this evaluation (PMID: 27302843). ClinVar contains an entry for this variant (Variation ID: 224322). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.36
BayesDel_addAF	Pathogenic	0.44	D
BayesDel_noAF	Pathogenic	0.39
CADD	Pathogenic	30
DANN	Uncertain	0.99
DEOGEN2	Benign	0.41	T
Eigen	Pathogenic	0.72
Eigen_PC	Pathogenic	0.70
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.82	T
M_CAP	Pathogenic	0.32	D
MetaRNN	Pathogenic	0.83	D
MetaSVM	Pathogenic	0.83	D
MutationAssessor	Pathogenic	2.9	M
PrimateAI	Uncertain	0.66	T
PROVEAN	Pathogenic	-9.6	D
REVEL	Pathogenic	0.70
Sift	Uncertain	0.010	D
Sift4G	Uncertain	0.0070	D
Polyphen		0.99	D
Vest4		0.85
MutPred		0.35		Loss of helix (P = 0.1706);
MVP		0.97
MPC		0.79
ClinPred		1.0	D
GERP RS		5.6
Varity_R		0.90
gMVP		0.75

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.10		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: rs886037782; hg19: chr6-42932620;