rs150004498

Variant names:

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 1P and 12B. PP2BP4_StrongBP6_Very_Strong

The NM_005373.3(MPL):c.1666G>T(p.Val556Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000138 in 1,614,158 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00023 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00013 ( 1 hom. )

Consequence

MPL
NM_005373.3 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts U:1B:3

Conservation

PhyloP100: 0.619

Publications

8 publications found

Variant links:

Genes affected

MPL (HGNC:7217): (MPL proto-oncogene, thrombopoietin receptor) In 1990 an oncogene, v-mpl, was identified from the murine myeloproliferative leukemia virus that was capable of immortalizing bone marrow hematopoietic cells from different lineages. In 1992 the human homologue, named, c-mpl, was cloned. Sequence data revealed that c-mpl encoded a protein that was homologous with members of the hematopoietic receptor superfamily. Presence of anti-sense oligodeoxynucleotides of c-mpl inhibited megakaryocyte colony formation. The ligand for c-mpl, thrombopoietin, was cloned in 1994. Thrombopoietin was shown to be the major regulator of megakaryocytopoiesis and platelet formation. The protein encoded by the c-mpl gene, CD110, is a 635 amino acid transmembrane domain, with two extracellular cytokine receptor domains and two intracellular cytokine receptor box motifs . TPO-R deficient mice were severely thrombocytopenic, emphasizing the important role of CD110 and thrombopoietin in megakaryocyte and platelet formation. Upon binding of thrombopoietin CD110 is dimerized and the JAK family of non-receptor tyrosine kinases, as well as the STAT family, the MAPK family, the adaptor protein Shc and the receptors themselves become tyrosine phosphorylated. [provided by RefSeq, Jul 2008]

MPL links:

CDC20-DT (HGNC:55681): (CDC20 divergent transcript)

CDC20-DT links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -11 ACMG points.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 25 curated pathogenic missense variants (we use a threshold of 10). The gene has 7 curated benign missense variants. Gene score misZ: 0.39478 (below the threshold of 3.09). Trascript score misZ: 1.6963 (below the threshold of 3.09). GenCC associations: The gene is linked to hereditary isolated aplastic anemia, congenital amegakaryocytic thrombocytopenia, thrombocythemia 2, congenital amegakaryocytic thrombocytopenia 1, familial thrombocytosis.

BP4

Computational evidence support a benign effect (MetaRNN=0.05140245).

BP6

Variant 1-43352530-G-T is Benign according to our data. Variant chr1-43352530-G-T is described in ClinVar as Likely_benign. ClinVar VariationId is 297411.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MPL	NM_005373.3 link	c.1666G>T	p.Val556Phe	missense_variant	Exon 12 of 12	ENST00000372470.9	NP_005364.1	P40238-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MPL	ENST00000372470.9 link	c.1666G>T	p.Val556Phe	missense_variant	Exon 12 of 12	1	NM_005373.3	ENSP00000361548.3	P40238-1
MPL	ENST00000413998.7 link	c.1645G>T	p.Val549Phe	missense_variant	Exon 12 of 12	1		ENSP00000414004.3	Q5JUY5
MPL	ENST00000643351.1 link	c.322G>T	p.Val108Phe	missense_variant	Exon 4 of 4			ENSP00000495154.1	A0A2R8YE13
CDC20-DT	ENST00000743559.1 link	n.354-1070C>A		intron_variant	Intron 2 of 2

Frequencies

GnomAD3 genomes

AF:

0.000230

AC:

AN:

152146

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000471

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000426

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000243

AC:

AN:

251436

AF XY:

0.000250

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000831

Gnomad NFE exome

AF:

0.000361

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000128

AC:

187

AN:

1461894

Hom.:

Cov.:

AF XY:

0.000125

AC XY:

AN XY:

727248

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.0000224

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.000487

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000142

AC:

158

AN:

1112012

Other (OTH)

AF:

0.0000166

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000230

AC:

AN:

152264

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74442

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41544

American (AMR)

AF:

0.0000654

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.000471

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000426

AC:

AN:

68018

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.521

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000191

Hom.:

Bravo

AF:

0.000117

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000465

AC:

ExAC

AF:

0.000288

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.000119

ClinVar

Significance: Likely benign

Submissions summary: Uncertain:1Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Congenital amegakaryocytic thrombocytopenia 1

Uncertain:1

Jul 12, 2017

Counsyl

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -

Thrombocythemia 1

Benign:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Congenital amegakaryocytic thrombocytopenia

Benign:1

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Essential thrombocythemia;C1327915:Congenital amegakaryocytic thrombocytopenia

Benign:1

Nov 11, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.18

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.40

T;.

Eigen

Benign

-0.023

Eigen_PC

Benign

0.0043

FATHMM_MKL

Benign

0.47

LIST_S2

Benign

0.77

T;T

M_CAP

Uncertain

0.23

MetaRNN

Benign

0.051

T;T

MetaSVM

Uncertain

-0.16

MutationAssessor

Benign

2.0

M;.

PhyloP100

0.62

PrimateAI

Benign

0.47

PROVEAN

Benign

-0.54

N;.

REVEL

Uncertain

0.36

Sift

Uncertain

0.010

D;.

Sift4G

Uncertain

0.0080

D;.

Polyphen

0.20

B;.

Vest4

0.34

MVP

0.93

MPC

0.56

ClinPred

0.065

GERP RS

3.6

Varity_R

0.17

gMVP

0.28

Mutation Taster

=85/15

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over