chr15-75505734-G-C

Position:

• chr15-75505734-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_002833.4(PTPN9):​c.909C>G​(p.Ile303Met) variant causes a missense change involving the alteration of a non-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 Uncertain significance (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: PTPN9 NM_002833.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.333

Genes affected

PTPN9 (HGNC:9661): (protein tyrosine phosphatase non-receptor type 9) 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 an N-terminal domain that shares a significant similarity with yeast SEC14, which is a protein that has phosphatidylinositol transfer activity and is required for protein secretion through the Golgi complex in yeast. This PTP was found to be activated by polyphosphoinositide, and is thought to be involved in signaling events regulating phagocytosis. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.818

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PTPN9	NM_002833.4	c.909C>G	p.Ile303Met	missense_variant	7/13	ENST00000618819.5	NP_002824.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PTPN9	ENST00000618819.5	c.909C>G	p.Ile303Met	missense_variant	7/13	1	NM_002833.4	ENSP00000482732	P1
PTPN9	ENST00000564970.1	n.83C>G		non_coding_transcript_exon_variant	1/3	5

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 09, 2023

The c.909C>G (p.I303M) alteration is located in exon 7 (coding exon 7) of the PTPN9 gene. This alteration results from a C to G substitution at nucleotide position 909, causing the isoleucine (I) at amino acid position 303 to be replaced by a methionine (M). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.46
BayesDel_addAF	Uncertain	0.14	D
BayesDel_noAF	Uncertain	-0.040
CADD	Benign	18
DANN	Uncertain	0.99
DEOGEN2	Benign	0.20	T;.
Eigen	Benign	-0.089
Eigen_PC	Benign	-0.25
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Uncertain	0.94	D;D
M_CAP	Benign	0.018	T
MetaRNN	Pathogenic	0.82	D;D
MetaSVM	Benign	-0.82	T
MutationAssessor	Uncertain	2.4	M;.
MutationTaster	Benign	0.99	D
PrimateAI	Uncertain	0.69	T
REVEL	Uncertain	0.31
Sift4G	Uncertain	0.015	D;D
Polyphen		0.99	D;.
Vest4		0.75
MutPred		0.57		Gain of disorder (P = 0.055);.;
MVP		0.73
MPC		1.1
ClinPred		0.92	D
GERP RS		-6.3
Varity_R		0.58
gMVP		0.63

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr15-75798075;