18-7770952-A-G

Variant names:

• chr18-7770952-A-G
• rs1446083
• NM_001105244.2:c.74-3197A>G

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001105244.2(PTPRM):​c.74-3197A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0977 in 152,238 control chromosomes in the GnomAD database, including 2,189 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.098 (2189 hom., cov: 32)
• Consequence: PTPRM NM_001105244.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.891
• Publications: 0 publications found

Genes affected

PTPRM (HGNC:9675): (protein tyrosine phosphatase receptor type M) 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 possesses an extracellular region, a single transmembrane region, and two tandem catalytic domains, and thus represents a receptor-type PTP. The extracellular region contains a meprin-A5 antigen-PTP mu (MAM) domain, an Ig-like domain and four fibronectin type III-like repeats. This PTP has been shown to mediate cell-cell aggregation through the interaction with another molecule of this PTP on an adjacent cell. This PTP can interact with scaffolding protein RACK1/GNB2L1, which may be necessary for the downstream signaling in response to cell-cell adhesion. Alternative splicing results in multiple transcripts encoding distinct isoforms. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.67).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.312 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001105244.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PTPRM	NM_001105244.2	MANE Select	c.74-3197A>G		intron	N/A	NP_001098714.1
	PTPRM	NM_002845.4		c.74-3197A>G		intron	N/A	NP_002836.3

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PTPRM	ENST00000580170.6	TSL:1 MANE Select	c.74-3197A>G		intron	N/A	ENSP00000463325.1
	PTPRM	ENST00000332175.12	TSL:1	c.74-3197A>G		intron	N/A	ENSP00000331418.8
	PTPRM	ENST00000400053.8	TSL:5	c.-113-3197A>G		intron	N/A	ENSP00000382927.4

Frequencies

GnomAD3 genomes AF: 0.0975 AC: 14825 AN: 152120 Hom.: 2180 Cov.: 32

Gnomad AFR AF: 0.317

Gnomad AMI AF: 0.00658

Gnomad AMR AF: 0.0423

Gnomad ASJ AF: 0.0193

Gnomad EAS AF: 0.0957

Gnomad SAS AF: 0.00868

Gnomad FIN AF: 0.00716

Gnomad MID AF: 0.0253

Gnomad NFE AF: 0.00332

Gnomad OTH AF: 0.0765

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

GnomAD4 genome AF: 0.0977 AC: 14868 AN: 152238 Hom.: 2189 Cov.: 32 AF XY: 0.0957 AC XY: 7128 AN XY: 74454

African (AFR) AF: 0.317 AC: 13141 AN: 41494

American (AMR) AF: 0.0422 AC: 646 AN: 15294

Ashkenazi Jewish (ASJ) AF: 0.0193 AC: 67 AN: 3472

East Asian (EAS) AF: 0.0959 AC: 497 AN: 5182

South Asian (SAS) AF: 0.00828 AC: 40 AN: 4832

European-Finnish (FIN) AF: 0.00716 AC: 76 AN: 10610

Middle Eastern (MID) AF: 0.0272 AC: 8 AN: 294

European-Non Finnish (NFE) AF: 0.00332 AC: 226 AN: 68034

Other (OTH) AF: 0.0762 AC: 161 AN: 2114

Alfa AF: 0.0588 Hom.: 439

Bravo AF: 0.111

Asia WGS AF: 0.0650 AC: 225 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.67
CADD	Benign	13
DANN	Benign	0.86
PhyloP100		0.89
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs1446083; hg19: chr18-7770950;