rs121918458
Variant summary
Our verdict is Pathogenic. The variant received 19 ACMG points: 19P and 0B. PM1PM2PM5PP2PP3_StrongPP5_Very_Strong
The NM_002834.5(PTPN11):c.1504T>A(p.Ser502Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S502L) has been classified as Pathogenic.
Frequency
Consequence
NM_002834.5 missense
Scores
Clinical Significance
Conservation
Publications
- LEOPARD syndrome 1Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, PanelApp Australia, Genomics England PanelApp
- Noonan syndromeInheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
- Noonan syndrome 1Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, PanelApp Australia
- Noonan syndrome with multiple lentiginesInheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
- metachondromatosisInheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics
- cardiofaciocutaneous syndromeInheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
- Costello syndromeInheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
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ACMG classification
Our verdict: Pathogenic. The variant received 19 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| PTPN11 | NM_002834.5 | c.1504T>A | p.Ser502Thr | missense_variant | Exon 13 of 16 | ENST00000351677.7 | NP_002825.3 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| PTPN11 | ENST00000351677.7 | c.1504T>A | p.Ser502Thr | missense_variant | Exon 13 of 16 | 1 | NM_002834.5 | ENSP00000340944.3 | ||
| PTPN11 | ENST00000635625.1 | c.1516T>A | p.Ser506Thr | missense_variant | Exon 13 of 15 | 5 | ENSP00000489597.1 | |||
| PTPN11 | ENST00000635652.1 | c.517T>A | p.Ser173Thr | missense_variant | Exon 5 of 5 | 3 | ENSP00000489541.1 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD4 exome Cov.: 32
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Noonan syndrome 1 Pathogenic:4
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This variant was determined to be pathogenic according to ACMG Guidelines, 2015 [PMID:25741868]. -
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not provided Pathogenic:3
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Published functional studies demonstrate a significant increase in phosphatase activity compared wildtype (Niihori et al., 2005); Not observed in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Missense variants in this gene are often considered pathogenic (HGMD); This variant is associated with the following publications: (PMID: 16358218, 15240615, 27521173, 12739139, 34184824, 12325025, 24803665, 15834506, 21407260, 25862627, 19737548, 32164556) -
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Noonan syndrome;C0349639:Juvenile myelomonocytic leukemia Pathogenic:1
proposed classification - variant undergoing re-assessment, contact laboratory -
PTPN11-related disorder Pathogenic:1
The PTPN11 c.1504T>A variant is predicted to result in the amino acid substitution p.Ser502Thr. This variant has been reported in at least eight unrelated individuals with Noonan syndrome (Maheshwari et al. 2002. PubMed ID: 12325025; van Trier et al. 2016. PubMed ID: 27521173; Athota et al. 2020. PubMed ID: 32164556) and has been shown to be a de novo event in two cases (Maheshwari et al. 2002. PubMed ID: 12325025). Additionally, different amino acid substitutions (p.Ser502Ala, p.Ser502Leu) affecting the same amino acid have been reported as pathogenic (Kratz et al. 2005. PubMed ID: 15928039; Bertola et al. 2006. PubMed ID: 17020470). This variant has been interpreted as pathogenic by multiple clinical labs in the ClinVar database (https://www.ncbi.nlm.nih.gov/clinvar/variation/13332/). This variant has not been reported in a large population database (http://gnomad.broadinstitute.org), indicating this variant is rare. This variant is interpreted as pathogenic. -
Noonan syndrome Pathogenic:1
The p.Ser502Thr variant (rs121918458) has been reported in multiple patients diagnosed with Noonan syndrome (Niihori 2005, Tartaglia 2006, van Trier 2016, Yoshida 2004), and reported as a presumed de-novo variant (Joyce 2016, Kondoh 2003, Maheshwari 2002). The serine residue is located in the phospho-tyrosine phosphatase domain of PTPN11, and interacts with the N-SH2 domain to mediate regulatory inhibition (Hof 1998). Functional characterization of the p.Ser502Thr protein indicates increased catalytic activity of the phosphatase (Niihori 2005), consistent with the established disease mechanisms of Noonan syndrome. -
Cardiovascular phenotype Pathogenic:1
The c.1504T>A (p.S502T) alteration is located in exon 13 (coding exon 13) of the PTPN11 gene. This alteration results from a T to A substitution at nucleotide position 1504, causing the serine (S) at amino acid position 502 to be replaced by a threonine (T). for PTPN11-related RASopathy; however, it is unlikely to be causative of metachondromatosis. This variant was not reported in population-based cohorts in the Genome Aggregation Database (gnomAD). This variant has been reported in multiple individuals with features consistent with PTPN11-related RASopathy, including multiple cases of reported de novo occurrence (Maheshwari, 2002; Yoshida, 2004; Tartaglia, 2006; van Trier, 2015; Athota, 2020; Orlova, 2024). Two other alterations at the same codon, c.1505C>T (p.S502L) and c.1504T>G (p.S502A), have been reported in association with PTPN11-related RASopathy (Bertola, 2006; Joyce, 2016). This amino acid position is highly conserved in available vertebrate species. This alteration is predicted to be deleterious by in silico analysis. Based on the available evidence, this alteration is classified as pathogenic. -
Juvenile myelomonocytic leukemia;C0410530:Metachondromatosis;C4551484:LEOPARD syndrome 1;C4551602:Noonan syndrome 1 Pathogenic:1
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RASopathy Pathogenic:1
This sequence change replaces serine, which is neutral and polar, with threonine, which is neutral and polar, at codon 502 of the PTPN11 protein (p.Ser502Thr). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with Noonan syndrome (PMID: 12325025, 32164556). In at least one individual the variant was observed to be de novo. ClinVar contains an entry for this variant (Variation ID: 13332). Invitae Evidence Modeling incorporating data from in vitro experimental studies (internal data) indicates that this missense variant is expected to disrupt PTPN11 function with a positive predictive value of 95%. This variant disrupts the p.Ser502 amino acid residue in PTPN11. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 12325025, 15928039, 17020470, 18470943, 19020799, 27521173). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. For these reasons, this variant has been classified as Pathogenic. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at