rs769772100
Variant summary
Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PM2PP3_ModeratePP5_Very_Strong
The NM_004813.4(PEX16):c.859C>T(p.Arg287Cys) variant causes a missense change. The variant allele was found at a frequency of 0.00000682 in 1,613,640 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 13/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).
Frequency
Consequence
NM_004813.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 12 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
PEX16 | ENST00000378750.10 | c.859C>T | p.Arg287Cys | missense_variant | Exon 9 of 11 | 1 | NM_004813.4 | ENSP00000368024.5 | ||
PEX16 | ENST00000241041.7 | c.859C>T | p.Arg287Cys | missense_variant | Exon 9 of 11 | 1 | ENSP00000241041.3 | |||
PEX16 | ENST00000532681.5 | c.574C>T | p.Arg192Cys | missense_variant | Exon 9 of 11 | 3 | ENSP00000434654.1 | |||
PEX16 | ENST00000533151.5 | c.547C>T | p.Arg183Cys | missense_variant, splice_region_variant | Exon 6 of 6 | 3 | ENSP00000433045.1 |
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152206Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.0000120 AC: 3AN: 250094Hom.: 0 AF XY: 0.0000148 AC XY: 2AN XY: 135460
GnomAD4 exome AF: 0.00000616 AC: 9AN: 1461434Hom.: 0 Cov.: 37 AF XY: 0.0000110 AC XY: 8AN XY: 727060
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152206Hom.: 0 Cov.: 33 AF XY: 0.0000269 AC XY: 2AN XY: 74364
ClinVar
Submissions by phenotype
Peroxisome biogenesis disorder Pathogenic:2
This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 287 of the PEX16 protein (p.Arg287Cys). This variant is present in population databases (rs769772100, gnomAD 0.004%). This missense change has been observed in individual(s) with clinical features of peroxisome biogenesis disorder (PMID: 30078639). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 561075). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt PEX16 protein function with a positive predictive value of 80%. This variant disrupts the p.Arg287 amino acid residue in PEX16. Other variant(s) that disrupt this residue have been observed in individuals with PEX16-related conditions (PMID: 31227335), which suggests that this may be a clinically significant amino acid residue. For these reasons, this variant has been classified as Pathogenic. -
Variant summary: PEX16 c.859C>T (p.Arg287Cys) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 1.2e-05 in 250094 control chromosomes.. c.859C>T has been reported in the literature in three siblings from the same family who were affected with Peroxisome Biogenesis Disorders, Zellweger Syndrome Spectrum (e.g., Al-Shamsi_2016, Zaabi_2019). These data indicate that the variant is very likely to be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 27391121, 30078639). ClinVar contains an entry for this variant (Variation ID: 561075). Based on the evidence outlined above, the variant was classified as pathogenic. -
not provided Pathogenic:2
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Peroxisome biogenesis disorder 8B Pathogenic:1Uncertain:1
Likely pathogenicity based on finding it once in our laboratory homozygous in an 8-year-old male with adrenoleukodystrophy -
PP1,PM2,PM3(strong),PM5 -
Peroxisome biogenesis disorder 8A (Zellweger) Pathogenic:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at