rs770428240

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 1P and 2B. PP2BP4_Moderate

The NM_005373.3(MPL):c.1460C>T(p.Thr487Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000296 in 1,552,682 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. T487T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00017 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

MPL
NM_005373.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.59

Publications

2 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 Gene-Disease associations (from GenCC):

thrombocythemia 2
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics, ClinGen
congenital amegakaryocytic thrombocytopenia
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics
congenital amegakaryocytic thrombocytopenia 1
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
familial thrombocytosis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
hereditary isolated aplastic anemia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

MPL links:

ENSG00000287113 (HGNC:):

ENSG00000287113 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 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=0.07221386).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005373.3. 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
	MPL	NM_005373.3	MANE Select	c.1460C>T	p.Thr487Ile	missense	Exon 9 of 12	NP_005364.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
MPL	ENST00000372470.9	TSL:1 MANE Select	c.1460C>T	p.Thr487Ile	missense	Exon 9 of 12	ENSP00000361548.3
MPL	ENST00000413998.7	TSL:1	c.1439C>T	p.Thr480Ile	missense	Exon 9 of 12	ENSP00000414004.3
MPL	ENST00000638732.1	TSL:1	n.1460C>T		non_coding_transcript_exon	Exon 9 of 10

Frequencies

GnomAD3 genomes

AF:

0.000171

AC:

AN:

152162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000579

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.0000580

AC:

AN:

155242

AF XY:

0.0000238

show subpopulations

Gnomad AFR exome

AF:

0.000835

Gnomad AMR exome

AF:

0.0000783

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000143

AC:

AN:

1400406

Hom.:

Cov.:

AF XY:

0.0000145

AC XY:

AN XY:

691944

show subpopulations

African (AFR)

AF:

0.000406

AC:

AN:

31990

American (AMR)

AF:

0.0000815

AC:

AN:

36808

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25202

East Asian (EAS)

AF:

0.00

AC:

AN:

36412

South Asian (SAS)

AF:

0.00

AC:

AN:

79706

European-Finnish (FIN)

AF:

0.00

AC:

AN:

42948

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5336

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1083770

Other (OTH)

AF:

0.0000687

AC:

AN:

58234

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.510

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:

0.000171

AC:

AN:

152276

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74446

show subpopulations

African (AFR)

AF:

0.000577

AC:

AN:

41574

American (AMR)

AF:

0.0000653

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5148

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68004

Other (OTH)

AF:

0.000473

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.535

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:

0.0000868

Hom.:

Bravo

AF:

0.000193

ExAC

AF:

0.0000270

AC:

ClinVar

ClinVar submissions as Germline

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Essential thrombocythemia;C1327915:Congenital amegakaryocytic thrombocytopenia (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.29

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.48

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.30

Eigen

Benign

-0.72

Eigen_PC

Benign

-0.67

FATHMM_MKL

Benign

0.21

LIST_S2

Benign

0.67

M_CAP

Uncertain

0.15

MetaRNN

Benign

0.072

MetaSVM

Benign

-0.79

MutationAssessor

Benign

0.0

PhyloP100

2.6

PrimateAI

Uncertain

0.66

PROVEAN

Benign

-1.4

REVEL

Benign

0.25

Sift

Benign

0.045

Sift4G

Benign

0.095

Polyphen

0.0010

Vest4

0.11

MVP

0.66

MPC

0.20

ClinPred

0.082

GERP RS

3.8

PromoterAI

0.17

Neutral

(source)

Varity_R

0.14

gMVP

0.30

Mutation Taster

=89/11

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over