NM_005373.3:c.210G>A

Variant names:

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_005373.3(MPL):c.210G>A(p.Pro70Pro) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000833 in 1,613,632 control chromosomes in the GnomAD database, including 10 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0045 ( 6 hom., cov: 32)

Exomes 𝑓: 0.00045 ( 4 hom. )

Consequence

MPL
NM_005373.3 splice_region, synonymous

Scores

Splicing: ADA: 0.00001590

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: 0.154

Publications

3 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, Ambry Genetics, ClinGen, Labcorp Genetics (formerly Invitae)
congenital amegakaryocytic thrombocytopenia
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae)
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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.49).

BP6

Variant 1-43338229-G-A is Benign according to our data. Variant chr1-43338229-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 211522.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.154 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00447 (681/152226) while in subpopulation AFR AF = 0.0156 (647/41524). AF 95% confidence interval is 0.0146. There are 6 homozygotes in GnomAd4. There are 338 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 6 AD,AR gene

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.210G>A	p.Pro70Pro	splice_region synonymous	Exon 2 of 12	NP_005364.1	P40238-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MPL	ENST00000372470.9	TSL:1 MANE Select	c.210G>A	p.Pro70Pro	splice_region synonymous	Exon 2 of 12	ENSP00000361548.3	P40238-1
MPL	ENST00000413998.7	TSL:1	c.189G>A	p.Pro63Pro	splice_region synonymous	Exon 2 of 12	ENSP00000414004.3	Q5JUY5
MPL	ENST00000638732.1	TSL:1	n.210G>A		splice_region non_coding_transcript_exon	Exon 2 of 10

Frequencies

GnomAD3 genomes

AF:

0.00449

AC:

683

AN:

152108

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0157

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00157

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00335

GnomAD2 exomes

AF:

0.00104

AC:

261

AN:

250482

AF XY:

0.000760

show subpopulations

Gnomad AFR exome

AF:

0.0143

Gnomad AMR exome

AF:

0.000694

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.000491

GnomAD4 exome

AF:

0.000454

AC:

663

AN:

1461406

Hom.:

Cov.:

AF XY:

0.000413

AC XY:

300

AN XY:

727022

show subpopulations

African (AFR)

AF:

0.0160

AC:

535

AN:

33466

American (AMR)

AF:

0.000671

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86244

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53290

Middle Eastern (MID)

AF:

0.000912

AC:

AN:

5480

European-Non Finnish (NFE)

AF:

0.0000261

AC:

AN:

1111998

Other (OTH)

AF:

0.00103

AC:

AN:

60370

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.472

Heterozygous variant carriers

128

170

213

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<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:

0.00447

AC:

681

AN:

152226

Hom.:

Cov.:

AF XY:

0.00454

AC XY:

338

AN XY:

74422

show subpopulations

African (AFR)

AF:

0.0156

AC:

647

AN:

41524

American (AMR)

AF:

0.00157

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5170

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68012

Other (OTH)

AF:

0.00331

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

Heterozygous variant carriers

123

154

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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:

0.00334

Hom.:

Bravo

AF:

0.00521

Asia WGS

AF:

0.00115

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

not specified (2)

Congenital amegakaryocytic thrombocytopenia (1)

Congenital amegakaryocytic thrombocytopenia 1 (1)

Essential thrombocythemia;C1327915:Congenital amegakaryocytic thrombocytopenia (1)

Thrombocythemia 1 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.49

CADD

Benign

9.8

(source)

DANN

Benign

0.75

PhyloP100

0.15

PromoterAI

0.035

Neutral

(source)

Mutation Taster

=89/11

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000016

dbscSNV1_RF

Benign

0.0

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

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