PTPN22 p.Lys750Lys

Variant names:

• chr1-113829591-C-C
• NM_015967.8:c.

Your query was ambiguous. Multiple possible variants found:

• chr1-113829592--
• chr1-113829592-C-T

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PVS1_Moderate PM2

The NM_015967.8(PTPN22):​c. variant causes a splice donor, intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PTPN22 NM_015967.8 splice_donor, intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.95
• Publications: 0 publications found

Genes affected

PTPN22 (HGNC:9652): (protein tyrosine phosphatase non-receptor type 22) This gene encodes of member of the non-receptor class 4 subfamily of the protein-tyrosine phosphatase family. The encoded protein is a lymphoid-specific intracellular phosphatase that associates with the molecular adapter protein CBL and may be involved in regulating CBL function in the T-cell receptor signaling pathway. Mutations in this gene may be associated with a range of autoimmune disorders including Type 1 Diabetes, rheumatoid arthritis, systemic lupus erythematosus and Graves' disease. Alternatively spliced transcript variants encoding distinct isoforms have been described. [provided by RefSeq, Mar 2009]

AP4B1-AS1 (HGNC:44114): (AP4B1 antisense RNA 1)

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.047854785 fraction of the gene. Cryptic splice site detected, with MaxEntScore 9.1, offset of 0 (no position change), new splice context is: aagGTaaag. 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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015967.8. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PTPN22	NM_015967.8	MANE Select	c.		splice_donor intron	N/A	NP_057051.4
	PTPN22	NM_001308297.2		c.		splice_donor intron	N/A	NP_001295226.2	F5H2S8
	PTPN22	NM_001193431.3		c.		splice_donor intron	N/A	NP_001180360.2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PTPN22	ENST00000359785.10	TSL:1 MANE Select	c.		splice_donor intron	N/A	ENSP00000352833.5	A0A0B4J1S7
	PTPN22	ENST00000420377.6	TSL:1	c.		splice_donor intron	N/A	ENSP00000388229.2	E9PMT0
	PTPN22	ENST00000538253.5	TSL:1	c.		splice_donor intron	N/A	ENSP00000439372.2	F5H2S8

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 27

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		1.9

Splicing

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr1-114372213;