About PTPN11
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 likely pathogenic. Select a step to read what it means.
Likely pathogenic.A likely 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 PTPN11 VCEP v1.0. 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.
SHP2 G60V demonstrated increased basal phosphatase activity compared to wild-type SHP2 in a quantitative DiFMUP-based phosphatase assay (PMID:30375388). This assay type (SHP-2 Phosphatase Activity) is an approved functional assay for PTPN11 per the RASopathy VCEP supplemental material. The VCEP spreadsheet assigns PS3_Supporting strength for approved functional studies. G60V showed intermediate activation between F285S and S502P/E76K and conferred resistance to allosteric inhibition by SHP099 in cellular assays, consistent with a gain-of-function mechanism.
Gly60 is located in the N-SH2 domain of SHP2, a critical functional domain that forms the autoinhibitory interface with the PTP domain. Multiple pathogenic missense changes have been reported at this residue (G60A, G60C, G60V), and disruption of Gly60 destabilizes the autoinhibited conformation, leading to constitutive phosphatase activation. The N-SH2 domain is a well-established critical functional domain in SHP2.
NM_002834.4:c.179G>T is completely absent from gnomAD v2.1 (exomes), gnomAD v4.1 (exomes), and gnomAD-Canada v1.0 (genomes), meeting the VCEP requirement of complete absence from all population databases.
A different missense change at the same residue, Gly60Ala (c.179G>C, p.Gly60Ala), has been previously reported as a pathogenic variant in Noonan syndrome (PMID:11992261). Both G60A and G60V are non-conservative substitutions at a glycine residue critical to the autoinhibitory interface. Under the RASopathy VCEP, one established pathogenic missense at the same residue qualifies for PM5 at moderate strength.
The RASopathy VCEP explicitly states that PP2 is applicable to all RASopathy genes described and curated in the specification. PTPN11 is a RASopathy gene, and c.179G>T is a missense variant in a gene where missense variants are a common mechanism of disease.
Multiple lines of computational evidence support a deleterious effect: REVEL score of 0.931 (strongly deleterious) and BayesDel score of 0.596 (deleterious). Both in silico predictors independently suggest a damaging effect on the gene product. SpliceAI predicts no significant splice impact (max delta score 0.05), indicating the effect is at the protein level.
No benign criterion marked as applied in the recorded assessment.
ClinGen RASopathy Expert Panel Specifications to the ACMG/AMP Variant Interpretation Guidelines Version 1.0 v1.0 lacked a usable explicit final combination framework, so generic ACMG/AMP 2015 final-combination rules were applied as fallback; applied criteria: PS3 supporting, PM1 moderate, PM2 moderate, PM5 moderate, PP2 supporting, PP3 supporting; combination = 3 moderate + 3 supporting, which maps to Likely 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: 0.050. Refer to the recorded PP3/BP4 rationale for interpretation.
9 Pathogenic · 2 Likely pathogenic. ClinVar API review status: criteria provided, multiple submitters, no conflicts.
OncoKB did not identify variant-specific reviewed functional evidence for this variant; gene-level curated context is available for reviewer follow-up. PTPN11, a protein tyrosine phosphatase, is altered in various solid and hematologic malignancies.
This variant has previously been reported in somatic cancers (COSMIC; COSV61005028, n = 64 times).
This variant does not lie in a statistically significant hotspot.
ACMG/AMP criteria under ClinGen PTPN11 VCEP v1.0, with the data and sources behind each one.
29 criteria with recorded statuses: 6 met · 13 not met · 0 not assessed · 10 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
NM_002834.4:c.179G>T (p.Gly60Val) in PTPN11 is a missense variant in the N-SH2 domain, a critical functional domain that regulates SHP2 autoinhibition.
This variant is completely absent from gnomAD v2.1, v4.1, and gnomAD-Canada population databases (PM2).
Functional studies demonstrate that SHP2 G60V exhibits increased basal phosphatase activity compared to wild-type, consistent with a gain-of-function mechanism in RASopathies (PS3_Supporting).
The variant is located at a residue (Gly60) within the N-SH2 domain where multiple pathogenic missense changes have been reported (PM1).
A different pathogenic missense change at the same residue, Gly60Ala (c.179G>C), has been reported in Noonan syndrome (PM5).
Multiple in silico predictors support a deleterious effect: REVEL score 0.931 and BayesDel score 0.596 (PP3).
PP2 is applicable per the RASopathy VCEP specification for all curated RASopathy genes (PP2).
This variant has been reported in ClinVar as Pathogenic by 9 clinical laboratories and Likely pathogenic by 2 clinical laboratories (ClinVar variation ID 55797).
No criteria match.
Every interpreted variant in PTPN11, mapped onto the exon structure of NM_002834.4. 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 no significant splice impact for this variant (max delta score = 0.05). REVEL score = 0.931. BayesDel score = 0.596115.
10 paper records listed. 3 cited in the classification.
179GrC — 2 — Gly60Ala — N-SH2
Location Table 3; Discussion
Gly60 and Asp61 hydrogen-bond Cys459 of the PTP catalytic cleft, stabilizing the closed inactive conformation of the phosphatase
Location Discussion
the basal activity of the SHP2 variants investigated here increases from SHP2 WT < SHP2 F285S < SHP2 G60V < SHP2 S502P < SHP2 E76K
Location Results, SHP2 oncoprotein sensitivity to allosteric modulators; Fig. 3b; Fig. 6b; Methods, Quantification of basal SHP2 phosphatase activity
Context In vitro phosphatase assay using purified recombinant SHP2 proteins with DiFMUP substrate; cellular pErk assay in PTPN11-null U2OS cells expressing SHP2 G60V
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 (9 clinical laboratories) and as Likely pathogenic (2 clinical laboratories). (ClinVarID = 55797)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.05). REVEL score = 0.931. BayesDel score = 0.596115.
OncoKB did not identify variant-specific reviewed functional evidence for this variant; gene-level curated context is available for reviewer follow-up. PTPN11, a protein tyrosine phosphatase, is altered in various solid and hematologic malignancies.
This variant does not lie in a statistically significant hotspot. This variant has previously been reported in somatic cancers (COSMIC; COSV61005028, n = 64 times).
This variant does not lie in a statistically significant hotspot.