12-6956138-CCAGTTGACCA-C

Position:

• chr12-6956138-CCAGTTGACCA-C

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PVS1_Moderate PM2 PP3

The NM_002831.6(PTPN6):​c.845_854del​(p.Phe282SerfsTer3) variant causes a splice acceptor, coding sequence, intron change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (no stars).

• Frequency: Genomes: not found (cov: 33)
• Consequence: PTPN6 NM_002831.6 splice_acceptor, coding_sequence, intron
• Clinical Significance: Uncertain significance no assertion criteria provided U:1
• Conservation: PhyloP100: 9.72

Genes affected

PTPN6 (HGNC:9658): (protein tyrosine phosphatase non-receptor type 6) 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. N-terminal part of this PTP contains two tandem Src homolog (SH2) domains, which act as protein phospho-tyrosine binding domains, and mediate the interaction of this PTP with its substrates. This PTP is expressed primarily in hematopoietic cells, and functions as an important regulator of multiple signaling pathways in hematopoietic cells. This PTP has been shown to interact with, and dephosphorylate a wide spectrum of phospho-proteins involved in hematopoietic cell signaling. Multiple alternatively spliced variants of this gene, which encode distinct isoforms, have been reported. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.044183444 fraction of the gene. Cryptic splice site detected, with MaxEntScore 6.6, offset of 0 (no position change), new splice context is: tcctctccgcccactcccAGccg. Cryptic site results in inframe change. If cryptic site found is not functional and variant results in exon loss, it results in frameshift change.
• PM2: Very rare variant in population databases, with high coverage
• PP3: No computational evidence supports a deleterious effect, but strongly conserved according to phyloP

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PTPN6	NM_002831.6	c.845_854del	p.Phe282SerfsTer3	splice_acceptor_variant, coding_sequence_variant, intron_variant	8/16	ENST00000318974.14

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PTPN6	ENST00000318974.14	c.845_854del	p.Phe282SerfsTer3	splice_acceptor_variant, coding_sequence_variant, intron_variant	8/16	1	NM_002831.6	P1
PTPN6	ENST00000399448.5	c.851_860del	p.Phe284SerfsTer3	splice_acceptor_variant, coding_sequence_variant, intron_variant	8/16	1
PTPN6	ENST00000456013.5	c.845_854del	p.Phe282SerfsTer3	splice_acceptor_variant, coding_sequence_variant, intron_variant	8/16	1
PTPN6	ENST00000416215.6	n.1253_1262del		splice_acceptor_variant, non_coding_transcript_exon_variant, intron_variant	7/15	2

Frequencies

GnomAD3 genomes Cov.: 33

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

Submissions by phenotype

Neurodevelopmental abnormality Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Department of Genetics, Rouen University Hospital, Normandy Center for Genomic and Personalized Medicine

Apr 03, 2020

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Computational scores

Source: dbNSFP v4.3

Splicing

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: chr12-7065301;