chr12-112488465-A-T

Position:

• chr12-112488465-A-T

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 11P and 1B. PM1 PM2 PM5 PP2 PP3_Strong BP6

The NM_002834.5(PTPN11):​c.1402A>T​(p.Thr468Ser) 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 Likely benign (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T468M) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PTPN11 NM_002834.5 missense
• Clinical Significance: Likely benign no assertion criteria provided B:1
• Conservation: PhyloP100: 8.95

Genes affected

PTPN11 (HGNC:9644): (protein tyrosine phosphatase non-receptor type 11) The protein encoded by this gene is a member of the protein tyrosine phosphatase (PTP) family. PTPs are known to be signaling molecules that regulate a variety of cellular processes including cell growth, differentiation, mitotic cycle, and oncogenic transformation. This PTP contains two tandem Src homology-2 domains, which function as phospho-tyrosine binding domains and mediate the interaction of this PTP with its substrates. This PTP is widely expressed in most tissues and plays a regulatory role in various cell signaling events that are important for a diversity of cell functions, such as mitogenic activation, metabolic control, transcription regulation, and cell migration. Mutations in this gene are a cause of Noonan syndrome as well as acute myeloid leukemia. [provided by RefSeq, Aug 2016]

ACMG classification

Verdict is Pathogenic. Variant got 10 ACMG points.

• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 7 uncertain in NM_002834.5
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr12-112488466-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 13331.Status of the report is reviewed_by_expert_panel, 3 stars.
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), PTPN11. . Gene score misZ 3.1293 (greater than the threshold 3.09). Trascript score misZ 4.9438 (greater than threshold 3.09). GenCC has associacion of gene with Noonan syndrome and Noonan-related syndrome, Noonan syndrome with multiple lentigines, metachondromatosis, Noonan syndrome 1, Noonan syndrome, cardiofaciocutaneous syndrome, LEOPARD syndrome 1, Costello syndrome.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.976
• BP6: Variant 12-112488465-A-T is Benign according to our data. Variant chr12-112488465-A-T is described in ClinVar as [Likely_benign]. Clinvar id is 981534.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PTPN11	NM_002834.5	c.1402A>T	p.Thr468Ser	missense_variant	12/16	ENST00000351677.7
PTPN11	NM_001330437.2	c.1414A>T	p.Thr472Ser	missense_variant	12/16
PTPN11	NM_001374625.1	c.1399A>T	p.Thr467Ser	missense_variant	12/16
PTPN11	XM_011538613.3	c.1411A>T	p.Thr471Ser	missense_variant	12/16

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PTPN11	ENST00000351677.7	c.1402A>T	p.Thr468Ser	missense_variant	12/16	1	NM_002834.5	A1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

Submissions by phenotype

Noonan syndrome Benign:1

Likely benign, no assertion criteria provided

clinical testing

Service de Génétique Moléculaire, Hôpital Robert Debré

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
CardioboostCm	Pathogenic	0.96
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.33
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.92	.;D;.
Eigen	Pathogenic	0.86
Eigen_PC	Pathogenic	0.79
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Benign	0.67	T;T;T
M_CAP	Pathogenic	0.79	D
MetaRNN	Pathogenic	0.98	D;D;D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Uncertain	2.7	.;M;.
MutationTaster	Benign	1.0	D
PrimateAI	Pathogenic	0.86	D
PROVEAN	Uncertain	-3.7	D;.;.
REVEL	Pathogenic	0.96
Sift	Uncertain	0.0030	D;.;.
Sift4G	Uncertain	0.0040	D;D;D
Polyphen		1.0	D;.;.
Vest4		0.86
MutPred		0.85		Loss of methylation at R465 (P = 0.3643);.;.;
MVP		0.95
MPC		1.8
ClinPred		0.98	D
GERP RS		5.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.88
gMVP		0.88

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr12-112926269;