LYFE Sciences · Project HERA
Variant Interpretation · Classification Report
Variant classification summary
NM_000314.8:c.-361C>T
PTEN
· NP_000305.3:p.?
· NM_000314.8
GRCh37: chr10:89623866 C>T
·
GRCh38: chr10:87864109 C>T
Gene:
PTEN
Transcript:
NM_000314.8
Final call
VUS
BS1 supporting
Variant details
Gene
PTEN
Transcript
NM_000314.8
Protein
NP_000305.3:p.?
gnomAD AF
1.2192742879438159e-05 (v4.1)
ClinVar
OncoKB
Classification rationale
Interpretation summary
Generated evidence synthesis
1
The PTEN NM_000314.8:c.-361C>T (NP_000305.3:p.?) variant has not been reported in ClinVar.
2
This variant is absent from gnomAD v2.1 but present in gnomAD v4.1 at 6/492096 alleles, with filtering allele frequency 6.24e-06; this is above the PTEN PM2 cutoff and within the PTEN BS1_supporting frequency range.
Final determination:
No criteria-combination rule matched the adjudicated criteria in the Richards et.al., 2015 - Combining rules v3.2.0 framework, so the variant remains a Variant of Uncertain Significance pending human review.
Criteria assessment
ACMG/AMP criteria review
Criteria shown when status is available
All criteria require review: For research and educational purposes only.
| Criterion | Status | Rationale | Evidence used |
|---|---|---|---|
| PVS1 | Not met | This 5'UTR variant does not fall into the PTEN PVS1 decision tree categories for nonsense, frameshift, canonical +/-1,2 splice, or exon-level loss-of-function variants, so PVS1 is not met. |
cspec
pvs1_gene_context
pvs1_variant_assessment
vcep_pvs1_decisiontree_pten
|
| PS1 | Not assessed | No previously established pathogenic variant causing the same amino acid change or an equivalent pathogenic splicing effect at this nucleotide was identified, so PS1 was not assessed. |
cspec
clinvar
|
| PS2 | Not assessed | No confirmed de novo occurrence in an affected individual was identified, so PS2 was not assessed. |
cspec
clinvar
|
| PS3 | Not assessed | No well-established functional study showing a damaging effect of this exact 5'UTR variant on PTEN splicing, transcript abundance, or gene function was identified, so PS3 was not assessed. |
cspec
vcep_mmc2
|
| PS4 | Not assessed | No enrichment data or counted affected probands meeting PTEN VCEP PS4 specifications were identified for this variant, so PS4 was not assessed. |
cspec
clinvar
|
| PM1 | N/A | This variant is in the 5'UTR and not in the PTEN catalytic motifs at residues 90-94, 123-130, or 166-168, so PM1 is not applicable. |
cspec
|
| PM2 | Not met | This variant is absent from gnomAD v2.1 but is present in gnomAD v4.1 at AF 1.21927e-05, with highest subpopulation AF 4.45315e-05, which is above the PTEN PM2 threshold of <0.00001 overall and <0.00002 within a subpopulation when multiple alleles are observed; therefore PM2 is not met. |
cspec
gnomad_v2
gnomad_v4
|
| PM3 | N/A | PM3 is not applicable in the PTEN VCEP framework. |
cspec
|
| PM4 | N/A | This variant does not cause an in-frame protein length change or stop-loss effect, so PM4 is not applicable. |
cspec
|
| PM5 | N/A | PTEN uses classic same-residue missense PM5 logic, and this variant is not missense-like, so PM5 is not applicable. |
cspec
pm5_candidates
|
| PM6 | Not assessed | No presumed de novo occurrence without parental confirmation was identified, so PM6 was not assessed. |
cspec
clinvar
|
| PP1 | Not assessed | No segregation data were identified for this variant, so PP1 was not assessed. |
cspec
clinvar
|
| PP2 | N/A | PP2 is a missense criterion, and this variant is a 5'UTR substitution, so PP2 is not applicable. |
cspec
|
| PP3 | Not assessed | The PTEN VCEP applies PP3 to concordant SpliceAI and VarSeak splicing predictions for synonymous or intronic variants, or to missense variants with REVEL >0.7. This 5'UTR variant is not missense, REVEL is unavailable, and no concordant PTEN VCEP splicing prediction result was available, so PP3 was not assessed. |
cspec
spliceai
|
| PP4 | N/A | PP4 is not applicable in the PTEN VCEP framework because phenotype specificity is incorporated into PS4. |
cspec
|
| PP5 | N/A | PP5 is not applicable in the PTEN VCEP framework. |
cspec
|
| BA1 | Not met | The gnomAD v4.1 filtering allele frequency for this variant is 6.24e-06, which is below the PTEN BA1 threshold of >0.00056, so BA1 is not met. |
cspec
gnomad_v4
|
| BS1 | Met | The gnomAD v4.1 filtering allele frequency is 6.24e-06, which falls within the PTEN BS1_Supporting range of 0.0000043 to 0.000043 and below the BS1 strong range of 0.000043 to 0.00056; therefore BS1 is met at supporting strength. |
cspec
gnomad_v4
|
| BS2 | Not met | No homozygous observation in a healthy or PTEN hamartoma tumor syndrome-unaffected individual was identified, so BS2 is not met. |
cspec
gnomad_v4
|
| BS3 | Not assessed | No well-established study showing no damaging effect of this exact 5'UTR variant on PTEN function or splicing was identified, so BS3 was not assessed. |
cspec
vcep_mmc2
|
| BS4 | Not assessed | No lack-of-segregation evidence was identified for this variant, so BS4 was not assessed. |
cspec
clinvar
|
| BP1 | N/A | BP1 is not applicable in the PTEN VCEP framework. |
cspec
|
| BP2 | Not assessed | No observation of this variant in trans with a pathogenic PTEN variant, or at least three cis/phase-unknown observations with different pathogenic PTEN variants, was identified, so BP2 was not assessed. |
cspec
clinvar
|
| BP3 | N/A | BP3 is not applicable in the PTEN VCEP framework. |
cspec
|
| BP4 | Not assessed | The PTEN VCEP applies BP4 to synonymous or intronic variants with concordant benign SpliceAI and VarSeak splicing predictions, or to missense variants with REVEL <0.5. This 5'UTR variant is not missense, REVEL is unavailable, and no concordant PTEN VCEP splicing prediction result was available, so BP4 was not assessed. |
cspec
spliceai
|
| BP5 | Not assessed | No alternate molecular diagnosis with non-overlapping phenotype was identified, so BP5 was not assessed. |
cspec
|
| BP6 | N/A | BP6 is not applicable in the PTEN VCEP framework. |
cspec
|
| BP7 | N/A | BP7 applies to synonymous or qualifying intronic variants, and this variant is a 5'UTR substitution, so BP7 is not applicable. |
cspec
|
Disclaimer:
The content and results provided by LYFE Sciences are for research and educational purposes only and must not be used as a substitute for professional medical judgment, diagnosis, or treatment. Always consult a qualified healthcare professional before making any clinical decisions.