About PTEN
No gene-level summary was recorded for this case.
No variant summary was recorded for this case.
Five-step scale from benign to pathogenic. This variant is pathogenic. Select a step to read what it means.
Pathogenic.A pathogenic classification under the recorded framework.
Gene-level background from the recorded interpretation.
Words with a dotted underline have a short definition. Hover or tap them.No gene-level summary was recorded for this case.
The recorded framework is ClinGen PTEN VCEP v3.2.0. The criteria and strengths shown below come from the saved assessment; this page does not recalculate the classification.
The applied criteria and their strengths are shown as assessed under the stated framework.
NM_000314.8:c.106G>C encodes p.Gly36Arg (G36R). A different nucleotide substitution at the same codon, NM_000314.8:c.106G>A, also encoding p.Gly36Arg, is established as pathogenic: ClinVar 3-star expert panel classifies it as Likely Pathogenic (VCV000189400), and it has been reported in a Cowden syndrome proband with bilateral breast cancer (PMID:10772390) with demonstrated 90% loss of phosphatase activity. The VCEP PS1 rule is satisfied: same amino acid change as a previously established pathogenic variant regardless of nucleotide change.
The PTEN G36R variant has a cumulative fitness score (Cum_score) of -2.69 in the Mighell et al. 2018 (PMID:29706350) saturation mutagenesis functional assay (mmc2.xlsx Table S2), meeting the VCEP PS3_Moderate threshold of Cum_score <= -1.11. High_conf = True and the variant Pass SE Filter. This is a massively parallel phosphatase activity assay directly testing all possible PTEN missense variants. The damaging functional effect is corroborated by PMID:10772390 (90% loss of phosphatase activity for G36R from c.106G>A) and PMID:21828076 (G36R tested among PHTS-associated mutations in yeast in vivo model, showing loss of function).
NM_000314.8:c.106G>C is absent from all large population databases: gnomAD v2.1 (exomes), gnomAD v4.1 (exomes), and gnomAD-Canada v1.0 (HostSeq genomes). The VCEP PTEN PM2 rule applies at supporting strength when a variant is absent or present at <0.00001 (0.001%) allele frequency in gnomAD or another large sequenced population.
PTEN has a low rate of benign missense variation and missense variants are a common mechanism of disease in PTEN hamartoma tumor syndrome. NM_000314.8:c.106G>C is a missense variant in a gene meeting these criteria, satisfying the VCEP PTEN PP2 rule at supporting strength.
Multiple lines of in silico evidence support a deleterious effect. The REVEL score is 0.995, which exceeds the VCEP PTEN PP3 threshold of >0.7 for missense variants. The BayesDel score is 0.617, providing additional orthogonal support for a damaging prediction.
Expert panel Clingen PTEN Variant Curation Expert Panel, Clingen classified as Likely pathogenic.
No benign criterion marked as applied in the recorded assessment.
Richards et.al., 2015 - Combining rules v3.2.0 criteria-combination framework: matched Rule8 (1 Pathogenic.Strong + 1 Pathogenic.Moderate + Pathogenic.Supporting >=4) with applied criteria: PS1 strong, PS3 moderate, PM2 supporting, PP2 supporting, PP3 supporting, PP5 supporting; maps to Pathogenic.
Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.
gnomAD v4.1 allele counts were not recorded for this variant.
Absent from gnomAD v2.1.
Absent from gnomAD-Canada v1.0.
Recorded SpliceAI maximum delta score: 0.270. Refer to the recorded PP3/BP4 rationale for interpretation.
1 Pathogenic · 1 Uncertain significance. ClinVar API review status: reviewed by expert panel.
OncoKB identified variant-specific curated literature and context relevant to functional review; biological-effect context: Loss-of-function; curated oncogenicity label: Oncogenic.
This variant has previously been reported in somatic cancers (COSMIC; COSV100909550, n = 1 times).
This variant lies in a statistically significant hotspot.
ACMG/AMP criteria under ClinGen PTEN VCEP v3.2.0, with the data and sources behind each one.
29 criteria with recorded statuses: 6 met · 15 not met · 0 not assessed · 8 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
NM_000314.8:c.106G>C (p.Gly36Arg) is a missense variant in PTEN exon 2. It is absent from all large population databases (gnomAD v2.1, v4.1, gnomAD-Canada).
The same amino acid change (p.Gly36Arg) from a different nucleotide substitution (c.106G>A) is classified as Likely Pathogenic by the ClinGen PTEN Variant Curation Expert Panel in ClinVar (VCV000189400, 3-star review).
Saturation mutagenesis functional data from Mighell et al. 2018 (PMID:29706350) demonstrate a severe damaging effect: G36R cumulative fitness score is -2.69 (threshold for PS3_Moderate is <= -1.11).
Additional functional studies corroborate the damaging effect: PMID:10772390 demonstrated 90% loss of phosphatase activity for G36R, and PMID:21828076 confirmed loss of function in a yeast in vivo assay.
In silico predictions uniformly support pathogenicity: REVEL score 0.995 and BayesDel score 0.617.
Applying the ClinGen PTEN VCEP v3.2.0 combination rules: PS1 (strong) is met (same amino acid change as established pathogenic c.106G>A); PS3_Moderate is met (Mighell et al. Cum_score -2.69 <= -1.11); and multiple supporting criteria are met (PM2_Supporting, PP2, PP3, PP5). Per VCEP Rule 11, one strong criterion (PS1) plus one moderate criterion (PS3_Moderate) is sufficient for a Likely Pathogenic classification.
No criteria match.
No further detail was recorded.
No further detail was recorded.
No further detail was recorded.
No further detail was recorded.
Every interpreted variant in PTEN, mapped onto the exon structure of NM_000314.8. Select a row to find it on the plot.
| Protein | Location | Classification | Link |
|---|
Absent from gnomAD v4.1.
Absent from gnomAD v2.1.
Absent from gnomAD-Canada v1.0.
SpliceAI predicts possible splice impact for this variant (max delta score = 0.27). REVEL score = 0.995. BayesDel score = 0.616964.
7 paper records listed. 2 cited in the classification.
the recombinant mutant PTEN protein showed a 90% loss of its phosphatase activity
Location Results, Table 1 (MHS-65-1); Discussion paragraphs 1-2
Context In vitro phosphatase assay using recombinant PTEN protein
mutations A34D, M35R, G36R, N48K, H61D, Y68D, D92E, H93Y, P96Q, H123D, C124S, G129E, R130G, Y155C, G165E, G165V, S170R, L181P, V217N, P246L, R335L, V343E; L345V and F347L
Location Results, PHTS mutations section; Figure 6A; Supplementary Material Table S1
Context Yeast S. cerevisiae heterologous expression system; p110alpha-CAAX co-expression; GFP-Akt1 membrane localization readout
Screenshots represent source records captured during evidence collection. Select one to view the recorded source content.
The evidence statements recorded by the interpretation pipeline. They have not been reinterpreted by the page.
Absent from gnomAD v4.1.
Absent from gnomAD v2.1.
Absent from gnomAD-Canada v1.0.
This variant has been reported in ClinVar as Pathogenic (1 clinical laboratory) and as Uncertain significance (1 clinical laboratory) and as Likely pathogenic by Clingen PTEN Variant Curation Expert Panel, Clingen (expert panel). (ClinVarID = 189400)
SpliceAI predicts possible splice impact for this variant (max delta score = 0.27). REVEL score = 0.995. BayesDel score = 0.616964.
OncoKB identified variant-specific curated literature and context relevant to functional review; biological-effect context: Loss-of-function; curated oncogenicity label: Oncogenic.
This variant lies in a statistically significant hotspot. This variant has previously been reported in somatic cancers (COSMIC; COSV100909550, n = 1 times).
This variant lies in a statistically significant hotspot.