12-112472968-C-A

Position:

• chr12-112472968-C-A

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 7P and 1B. PM1 PM2 PM5 PP2 BP4

The NM_002834.5(PTPN11):​c.781C>A​(p.Leu261Ile) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,460,606 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L261F) has been classified as Pathogenic.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: PTPN11 NM_002834.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.74

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 Likely_pathogenic. Variant got 6 ACMG points.

• PM1: In a domain Tyrosine-protein phosphatase (size 270) in uniprot entity PTN11_HUMAN there are 52 pathogenic changes around while only 2 benign (96%) 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 chr12-112472968-C-T is described in Lovd as [Pathogenic].
• 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). The gene has 131 curated pathogenic missense variants (we use a threshold of 10). The gene has 13 curated benign missense variants. GenCC has associacion of the 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.
• BP4: Computational evidence support a benign effect (MetaRNN=0.34381473).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PTPN11	NM_002834.5	c.781C>A	p.Leu261Ile	missense_variant	7/16	ENST00000351677.7	NP_002825.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PTPN11	ENST00000351677.7	c.781C>A	p.Leu261Ile	missense_variant	7/16	1	NM_002834.5	ENSP00000340944.3
PTPN11	ENST00000635625.1	c.781C>A	p.Leu261Ile	missense_variant	7/15	5		ENSP00000489597.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1460606 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 726690

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.00e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.55
CardioboostCm	Uncertain	0.17
BayesDel_addAF	Pathogenic	0.20	D
BayesDel_noAF	Uncertain	0.050
CADD	Benign	23
DANN	Benign	0.97
DEOGEN2	Benign	0.32	.;.;T
Eigen	Benign	0.076
Eigen_PC	Uncertain	0.26
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.95	D;D;D
M_CAP	Pathogenic	0.36	D
MetaRNN	Benign	0.34	T;T;T
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Benign	1.3	L;L;L
PrimateAI	Pathogenic	0.88	D
PROVEAN	Benign	-0.49	N;N;.
REVEL	Uncertain	0.52
Sift	Benign	0.48	T;T;.
Sift4G	Benign	0.40	T;T;T
Polyphen		0.0080	B;B;.
Vest4		0.54
MutPred		0.28		Gain of MoRF binding (P = 0.1014);Gain of MoRF binding (P = 0.1014);Gain of MoRF binding (P = 0.1014);
MVP		0.86
MPC		1.3
ClinPred		0.49	T
GERP RS		5.7
Varity_R		0.90
gMVP		0.18

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs397507525; hg19: chr12-112910772;