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March 26, 2014Hematology ReportsOpen Access

Serum Thrombopoietin and cMpl Expression in Thrombocytopenia of Different Etiologies

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Key result

Thrombocytopenic states are linked to ~264% higher serum thrombopoietin and increased platelet cMpl expression versus controls.

  • P<0.001
  • n=75

Why the study?

The relationship between thrombopoietin and its receptor cMpl in thrombocytopenic conditions has not been entirely clarified.

Population

43 patients with thrombocytopenia due to ITP, bone marrow hypoplasia, MDS, and familial thrombocytopenia

Comparison

Patients with normal platelet count and patients with thrombocytosis due to essential thrombocythemia

Design

Observational study

Authors

FVFabrizio VianelloSVSilvia VettoreFTFabiana Tezza

Discussion

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Overview

No immediate change to thrombocytopenia management; leaves open TPO/cMpl axis as therapeutic target in ITP and MDS.

Study Design

Type

Observational (n=75)

Multicenter

No

Structured PICO

P
Population
75 participants, including 43 patients with thrombocytopenia of various etiologies, 12 with essential thrombocythemia, and 15 healthy controls, evaluated for serum thrombopoietin and cMpl expression.
C
Comparator
Patients with a normal platelet count and patients with thrombocytosis due to essential thrombocythemia (ET)
O
Outcome
TPO and cMpl expression in platelets and megakaryocytessurrogate

Main Result

Absolute Event Rate: 160% vs 44%

p-value: p=<0.001

Thrombocytopenic states are associated with increased platelet cMpl expression and generally higher TPO levels compared to healthy controls.

Limitations

  • Small sample size in patient subgroups
  • Inability to directly quantitate platelet production and turnover
  • Heterogeneity of megakaryocytes in MDS patients

Cite This Study

Vianello et al. (2014) conducted an observational in Thrombocytopenia of different etiologies (n=75). Thrombocytopenic conditions (e.g., ITP, MDS, bone marrow hypoplasia) vs. Healthy controls was evaluated on Serum thrombopoietin (TPO) levels (pg/mL) in ITP patients vs controls (p=<0.001). Thrombocytopenic states including ITP, MDS, and bone marrow hypoplasia were associated with significantly increased serum thrombopoietin levels and platelet cMpl expression compared to healthy controls.

synapsesocial.com/papers/6aae4b26e342aff438f21beehttps://doi.org/10.4081/hr.2014.4996
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Internalization of the thrombopoietin receptor is regulated by 2 cytoplasmic motifs2003 · 56 citations
  2. 2Impaired Expression of the Thrombopoietin Receptor by Platelets from Patients with Polycythemia Vera1998 · 313 citations
  3. 3The biogenesis of platelets from megakaryocyte proplatelets2005 · 594 citations
  4. 4Eltrombopag and Improved Hematopoiesis in Refractory Aplastic Anemia2012 · 553 citations
  5. 5Ultrastructural study shows morphologic features of apoptosis and para-apoptosis in megakaryocytes from patients with idiopathic thrombocytopenic purpura2003 · 296 citations