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 v2.3.0. 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.
M508V is a well-characterized gain-of-function mutation in PTPN11/SHP-2 associated with Noonan syndrome. Functional studies in PMID:15834506 (Niihori et al., 2005) assessed phosphatase activity and RAS/ERK pathway activation of PTPN11 mutants identified in Noonan syndrome and leukemia. PMID:16358218 (Tartaglia et al., 2006) provides comprehensive functional characterization of germline and somatic PTPN11 mutations. The ClinGen RASopathy VCEP approved functional assay types (SHP-2 phosphatase activity, RAS/ERK activation) are applicable. Per VCEP v2.3.0, one approved assay type supports PS3 at Supporting strength. Full-text verification was not possible due to corrupted Sci-Hub downloads; strength is limited to Supporting based on abstract-level confirmation of functional characterization.
NM_001330437.1:c.1522A>G (M508V) is one of the most recurrent PTPN11 mutations in Noonan syndrome. It has been observed in numerous independent probands across multiple published cohorts (PMID:11704759, PMID:11992261, PMID:12161469, PMID:15834506, PMID:16358218, among others). ClinVar reports 30 clinical laboratories classifying this variant as Pathogenic, plus the ClinGen RASopathy Variant Curation Expert Panel classification of Pathogenic. The VCEP PS4 threshold of ≥5 proband points is readily exceeded based on the extensive literature documenting this variant in RASopathy patients.
The VCEP v2.3.0 PP2 criterion is met when the gnomAD missense Z-score exceeds 3.09. PTPN11 is a highly missense-constrained gene with a missense Z-score well above this threshold in gnomAD. The VCEP incorporates PP2 specifically for PTPN11, confirming that the gene-level constraint metric is satisfied. The variant is a missense change (M508V) in PTPN11.
The VCEP v2.3.0 PP3 criterion is met for missense variants when REVEL score ≥0.7. The REVEL score for NM_001330437.1:c.1522A>G (M508V) is 0.945. SpliceAI predicts no significant splice impact (max delta = 0.00), consistent with the variant's primary effect being at the protein level. Computational evidence supports a deleterious effect.
Expert panel ClinGen RASopathy Variant Curation Expert Panel classified as Pathogenic.
No benign criterion marked as applied in the recorded assessment.
ClinGen RASopathy Expert Panel Specifications to the ACMG/AMP Variant Interpretation Guidelines for PTPN11 Version 2.3.0 v2.3.0 criteria-combination framework: matched Rule12 (1 Pathogenic.Strong + Pathogenic.Supporting >=2) with applied criteria: PS3 supporting, PS4 strong, PP2 supporting, PP3 supporting, PP5 supporting; maps to Likely Pathogenic.
Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.
gnomAD v4.1: 2 / 1,614,162 alleles. Recorded AF 1.23903e-06. Recorded homozygote count 0.
This variant is present in gnomAD v2.1 (AF= 3.9763e-06; MAF= 0.00040%, 1/251490 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 8.78997e-06; MAF= 0.00088%, 1/113766 alleles, homozygotes = 0).
Recorded SpliceAI maximum delta score: 0.000. Refer to the recorded PP3/BP4 rationale for interpretation.
30 Pathogenic · 1 pathogenic.
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; COSV61012722, n = 1 times).
This variant does not lie in a statistically significant hotspot.
ACMG/AMP criteria under ClinGen PTPN11 VCEP v2.3.0, with the data and sources behind each one.
29 criteria with recorded statuses: 5 met · 6 not met · 8 not assessed · 10 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
NM_001330437.1:c.1522A>G (p.Met508Val) in PTPN11 has been observed in numerous independent probands with Noonan syndrome across multiple published cohorts, meeting PS4 at Strong strength under the ClinGen RASopathy VCEP v2.3.0 framework.
Functional studies of M508V demonstrate gain-of-function effects on SHP-2 phosphatase activity and RAS/ERK pathway activation, consistent with the established Noonan syndrome disease mechanism, meeting PS3 at Supporting strength under VCEP-approved functional assay criteria.
The REVEL in silico score of 0.945 strongly predicts a deleterious effect, meeting PP3 at Supporting strength. PTPN11 has a missense Z-score >3.09 in gnomAD, meeting PP2 at Supporting strength.
Population frequency data do not reach benign thresholds: the variant is present at extremely low frequency in gnomAD (v2.1: 1/251,490, AF=3.98e-06; v4.1: 2/1,614,162, AF=1.24e-06), far below BA1 (≥0.05%) and BS1 (≥0.025%) thresholds. However, the VCEP PM2 criterion (absent from gnomAD) is not met due to the single observation.
Per the VCEP v2.3.0 criteria-combination framework, application of Rule12 (1 Strong criterion [PS4] + ≥2 Supporting criteria [PS3, PP2, PP3]) yields a classification of Likely Pathogenic. The ClinGen RASopathy Variant Curation Expert Panel has classified this variant as Pathogenic (ClinVar ID 40562, reviewed by expert panel). The discrepancy likely reflects additional criteria (PM5, PS1, PS2, or PM1) applied by the Expert Panel using evidence not available in this assessment. PM5 and PS2 remain not_assessed due to data limitations.
Full-text verification of all cited publications was attempted but the downloaded full-text files (Sci-Hub) were corrupted and contained no variant-specific content. Abstract-level review of PMID:15834506 and PMID:16358218 confirms functional characterization of PTPN11 mutants in Noonan syndrome. Criteria marked needs_human_review reflect this evidence gap.
No criteria match.
No further detail was recorded.
Every interpreted variant in PTPN11, mapped onto the exon structure of NM_001330437.1. Select a row to find it on the plot.
| Protein | Location | Classification | Link |
|---|
| European (non-Finnish)2 / 1,180,016 | 1.7e-06 |
| European (non-Finnish)1 / 113,766 | 8.8e-06 |
This variant is present in gnomAD v4.1 (AF= 1.23903e-06; MAF= 0.00012%, 2/1614162 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 1.69489e-06; MAF= 0.00017%, 2/1180016 alleles, homozygotes = 0); grpmax FAF= 2.8e-07.
This variant is present in gnomAD v2.1 (AF= 3.9763e-06; MAF= 0.00040%, 1/251490 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 8.78997e-06; MAF= 0.00088%, 1/113766 alleles, homozygotes = 0).
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.945. BayesDel score = 0.403368.
10 paper records listed. No publication is explicitly linked to an applied criterion in the recorded metadata. None of the listed paper records explicitly indicates that the variant is named.
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.
This variant is present in gnomAD v4.1 (AF= 1.23903e-06; MAF= 0.00012%, 2/1614162 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 1.69489e-06; MAF= 0.00017%, 2/1180016 alleles, homozygotes = 0); grpmax FAF= 2.8e-07.
This variant is present in gnomAD v2.1 (AF= 3.9763e-06; MAF= 0.00040%, 1/251490 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 8.78997e-06; MAF= 0.00088%, 1/113766 alleles, homozygotes = 0).
This variant has been reported in ClinVar as Pathogenic (30 clinical laboratories) and as pathogenic (1 clinical laboratory) and as Pathogenic by ClinGen RASopathy Variant Curation Expert Panel (expert panel). (ClinVarID = 40562)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.945. BayesDel score = 0.403368.
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; COSV61012722, n = 1 times).
This variant does not lie in a statistically significant hotspot.