chr19-35907533-T-C

Variant names:

• chr19-35907533-T-C
• rs1057520133
• NM_003332.4:c.142A>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_003332.4(TYROBP):​c.142A>G​(p.Met48Val) 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 benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: TYROBP NM_003332.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.152
• Publications: 0 publications found

Genes affected

TYROBP (HGNC:12449): (transmembrane immune signaling adaptor TYROBP) This gene encodes a transmembrane signaling polypeptide which contains an immunoreceptor tyrosine-based activation motif (ITAM) in its cytoplasmic domain. The encoded protein may associate with the killer-cell inhibitory receptor (KIR) family of membrane glycoproteins and may act as an activating signal transduction element. This protein may bind zeta-chain (TCR) associated protein kinase 70kDa (ZAP-70) and spleen tyrosine kinase (SYK) and play a role in signal transduction, bone modeling, brain myelination, and inflammation. Mutations within this gene have been associated with polycystic lipomembranous osteodysplasia with sclerosing leukoencephalopathy (PLOSL), also known as Nasu-Hakola disease. Its putative receptor, triggering receptor expressed on myeloid cells 2 (TREM2), also causes PLOSL. Multiple alternative transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Mar 2010]

TYROBP Gene-Disease associations (from GenCC):

• polycystic lipomembranous osteodysplasia with sclerosing leukoencephalopathy 1

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Ambry Genetics, PanelApp Australia
• polycystic lipomembranous osteodysplasia with sclerosing leukoencephaly

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.17295745).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TYROBP	NM_003332.4	c.142A>G	p.Met48Val	missense_variant	Exon 3 of 5	ENST00000262629.9	NP_003323.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TYROBP	ENST00000262629.9	c.142A>G	p.Met48Val	missense_variant	Exon 3 of 5	1	NM_003332.4	ENSP00000262629.3

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 38

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Dec 29, 2016

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.074
BayesDel_addAF	Benign	-0.064	T
BayesDel_noAF	Benign	-0.33
CADD	Benign	11
DANN	Benign	0.64
DEOGEN2	Benign	0.0031	T;.;.;T;.
Eigen	Benign	-0.94
Eigen_PC	Benign	-0.82
FATHMM_MKL	Benign	0.35	N
LIST_S2	Benign	0.69	T;T;T;T;T
M_CAP	Benign	0.047	D
MetaRNN	Benign	0.17	T;T;T;T;T
MetaSVM	Benign	-0.91	T
MutationAssessor	Benign	0.0	.;.;.;N;N
PhyloP100		0.15
PrimateAI	Benign	0.43	T
PROVEAN	Benign	0.84	.;.;N;N;.
REVEL	Benign	0.15
Sift	Benign	0.31	.;.;T;T;.
Sift4G	Benign	0.19	T;T;T;T;T
Polyphen		0.0040	.;.;.;B;B
Vest4		0.27
MutPred		0.28		.;Gain of catalytic residue at M48 (P = 0.0942);.;Gain of catalytic residue at M48 (P = 0.0942);Gain of catalytic residue at M48 (P = 0.0942);
MVP		0.47
MPC		0.23
ClinPred		0.13	T
GERP RS		-0.97
Varity_R		0.10
gMVP		0.70
Mutation Taster		=93/7	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		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: rs1057520133; hg19: chr19-36398435;