12-112453317-G-A
Variant summary
Our verdict is Likely benign. The variant received -1 ACMG points: 3P and 4B. PP2PP3_ModerateBS2
The NM_002834.5(PTPN11):c.455G>A(p.Arg152His) variant causes a missense change. The variant allele was found at a frequency of 0.0000167 in 1,613,938 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R152C) has been classified as Uncertain significance.
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
Genome browser will be placed here
ACMG classification
Our verdict: Likely_benign. The variant received -1 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| PTPN11 | NM_002834.5 | c.455G>A | p.Arg152His | missense_variant | Exon 4 of 16 | ENST00000351677.7 | NP_002825.3 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000197 AC: 3AN: 152116Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000159 AC: 4AN: 251346 AF XY: 0.0000147 show subpopulations
GnomAD4 exome AF: 0.0000164 AC: 24AN: 1461822Hom.: 0 Cov.: 31 AF XY: 0.0000193 AC XY: 14AN XY: 727208 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000197 AC: 3AN: 152116Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2AN XY: 74322 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Metachondromatosis Uncertain:1
- -
not provided Uncertain:1
Reported as a paternally inherited variant in an individual with dilated cardiomyopathy and dysmorphic features; however a different genetic etiology was identified for the cardiomyopathy in that individual (PMID: 29517769); Observed in an individual with a reported clinical diagnosis of Noonan syndrome who had PTPN11 gene sequencing only; no additional clinical information was provided (PMID: 32164556); Reported as a VUS in a patient with hypospadias (PMID: 33468338); Observed as a germline variant in individuals with a history of cancer; the R152H variant was classified by the authors as a variant of uncertain significance (PMID: 29625052, 36451132); Reported as a somatic variant in B-precursor acute lymphoblastic leukemia (PMID: 16518851); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Missense variants in this gene are a common cause of disease and they are underrepresented in the general population; This variant is associated with the following publications: (PMID: 24728327, 29625052, 29493581, 32164556, 29517769, 36451132, 33468338, 16518851) -
Noonan syndrome Uncertain:1
- -
Juvenile myelomonocytic leukemia;C0410530:Metachondromatosis;C4551484:LEOPARD syndrome 1;C4551602:Noonan syndrome 1 Uncertain:1
- -
Cardiovascular phenotype Uncertain:1
The p.R152H variant (also known as c.455G>A), located in coding exon 4 of the PTPN11 gene, results from a G to A substitution at nucleotide position 455. The arginine at codon 152 is replaced by histidine, an amino acid with highly similar properties. This variant has been detected in an individual from a Noonan syndrome cohort; however, clinical details were not provided and gene analysis was limited to PTPN11 (Athota JP et al. BMC Med Genet, 2020 Mar;21:50). This variant co-occurred with a de novo TNNT2 mutation in an individual with pediatric onset dilated cardiomyopathy and dysmorphic features (Herkert JC et al. Genet Med, 2018 Nov;20:1374-1386). This amino acid position is well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
RASopathy Uncertain:1
This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 152 of the PTPN11 protein (p.Arg152His). This variant is present in population databases (rs397507521, gnomAD 0.004%). This missense change has been observed in individual(s) with Noonan syndrome (PMID: 32164556). ClinVar contains an entry for this variant (Variation ID: 40514). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt PTPN11 protein function with a positive predictive value of 95%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
not specified Other:1
- -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at