This is a prospective, single-arm study to investigate the efficacy and safety of the combination of fixed low-dose eltrombopag plus recombinant human thrombopoietin (rhTPO) as treatment for corticosteroid-resistant or relapsed immune thrombocytopenia (ITP) patients during the COVID-19 pandemic.

This is a single-center, prospective, controlled study with one eltrombopag treatment group and 2 control groups, one on standard steroid treatment, and another one untreated.

The aim of the study is to determine the effect of Thrombopoietin Receptor (MPL) agonists on shear-induced platelet activation.

Patients with inherited thrombocytopenias often require platelet transfusions to raise their platelet count before surgery or other invasive procedures; moreover, subjects with clinically significant spontaneous bleeding may benefit from an enduring improvement of thrombocytopenia. The hypothesis that thrombopoietin-mimetics can increase platelet count in inherited thrombocytopenias is appealing, but evidence is scarce. We conducted a prospective, phase II clinical trial to investigate the efficacy of the oral thrombopoietin-mimetic eltrombopag in different forms of inherited thrombocytopenia. We enrolled 24 patients affected by MYH9-related disease, ANKRD26-related thrombocytopenia, X-linked thrombocytopenia/ Wiskott-Aldrich syndrome, monoallelic Bernard-Soulier syndrome, or ITGB3-related thrombocytopenia. The average pre-treatment platelet count was 40.4 ×109/L. Patients received a 3- to 6-week course of eltrombopag in a dose-escalated manner. Of 23 patients evaluable for response, 11 (47.8%) achieved a major response (platelet count >100 ×109/L), ten (43.5%) had a minor response (platelet count at least twice the baseline value), and two patients (8.7%) did not respond. The average increase of platelet count compared to baseline was 64.5 ×109/L (P<0.001). Four patients with clinically significant spontaneous bleeding entered a program of long-term eltrombopag administration (16 additional weeks): all of them obtained remission of mucosal hemorrhages, with the remission persisting throughout the treatment period. Treatment was globally well tolerated: five patients reported mild adverse events and one patient a moderate adverse event. In conclusion, eltrombopag was safe and effective in increasing platelet count and reducing bleeding symptoms in different forms of inherited thrombocytopenia. Despite these encouraging results, caution is recommended when using thrombopoietinmimetics in inherited thrombocytopenias predisposing to leukemia. ClinicalTrials.gov identifier: NCT02422394.

This will be a double-blind, placebo-control, randomized clinical trial conducted in the Department of Hematology, DMCH for one year. This study will help to establish the role of eltrombopag as a first-line therapy in newly diagnosed ITP. Newly diagnosed ITP patients will be selected after meeting inclusion and exclusion criteria, they will be thoroughly informed about the study, used drugs, randomization, risks, benefits, and follow-up. If they agree to participate, their consent will be taken and they will be enrolled in the study. A detailed history and clinical exam will be done. Primary investigation will be - CBC PBF, RBS, ANA, TSH, Anti H. pyloriIgG, Anti-HCV, APTT, and BMS (if indicated). The main outcome variable will be platelet count and number of spontaneous bleeding. Total sample size would be 100 (50 in each group). Enrolled patients would be divided into two groups (1:1) by block randomization. One group will get Eltrombopag\& Prednisolone and other group will get Eltrombopag\& Placebo. Researchers or any one related to the study in DMCH, patients \& their attendants, no one will know which patient will get placebo or eltrombopag. Only a respectable third party will know the information. A patient would be followed up on 1st, 2nd and 4th week of starting therapy. Patients would be evaluated in every follow up by history, physical examination and investigation. History of any spontaneous bleeding event, any discomfort or new symptoms science last follow up will be noted. General examination will be performed in every follow-up. CBC, RBS, ALT, AST, creatinine will be done in every follow-up. Data will be collected on a pre-designed case record form and will be collected through face-to-face interviews, physical examination, and laboratory reports. After data collection data will be edited, cleaned, and prepared for analysis at the end of the study. The statistical analysis will be conducted using SPSS version 25 statistical software. The results of the study will be published in national and international journals.

Thrombopoietin receptor analogs (TPO-RAs) are indicated for splenectomized immune thrombocytopenia refractory to corticosteroids or immunoglobulins, intravenous, or as second-line therapy when splenectomy is contraindicated. Herein, we report a case of left transverse and superior sagittal sinus thrombophlebitis in a 49-year-old woman with chronic immune thrombocytopenia who received 10 days of eltrombopag treatment. Etiologic assessment ruled out acquired thrombophilia and antiphospholipid syndrome. Pharmacovigilance investigation confirmed causality between eltrombopag and the cerebral events, necessitating the definitive discontinuation of the drug. The patient was treated with anticoagulants and anticonvulsants. This evolution was marked by clinical recovery and significant radiological improvement of the thrombotic event. Cerebral venous thrombophlebitis within TPO-RA treatment remains rare, and without codified recommendations, a strict assessment of patients at risk of thrombotic events remains necessary prior to TPO-RA initiation.

Treatment with chimeric antigen receptor-T cell (CAR-T) is successful in patients who have not responded to chemotherapy or bone marrow transplantation but it may provoke side effects and long-term complications. Early and specific side effects include cytokine release syndrome and neurological toxicity. In addition, there are also late side effects. The most prominent of which is bone marrow damage and lack of recovery of blood counts after treatment.

In this study, patients with prolong aplasia after CAR-T will recieve eltrombopag to enahnce bone marrow recovery.

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We monitored platelet activation by means of P-selectin and platelet monocyte aggregates (PMA) and platelet function by whole blood multiple electrode aggregometry and platelet adhesion under high shear in chronic immune thrombocytopenia patients to define changes in platelet activation during treatment with eltrombopag. Overall, platelet activation and function normalized with increasing platelet counts. However, P-selectin, which was already elevated before treatment, and PMA increased further transiently during the first weeks. The increases in P-selectin and in PMA indicate ongoing platelet activation during the early period of treatment.

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BACKGROUND:

Eltrombopag (EPAG), an oral thrombopoietin receptor agonist (TPO-RA), has been proven to improve the hematologic response without increasing toxic effects as a first-line therapy combined with standard immunosuppressive treatment (IST) in adults with severe aplastic anemia (SAA). Nevertheless, the clinical evidence on the efficacy of EPAG in children with acquired aplastic anemia is limited and controversial.

METHODS:

We performed a single-center, retrospective study to analyze the clinical outcomes of fifteen patients aged ≤18 years with newly diagnosed acquired SAA who received first-line IST and EPAG (EPAG group) compared with those of forty-five patients who received IST alone (IST group) by propensity score matching (PSM).

RESULTS:

There was no difference in the overall response (OR) rate between the EPAG group and IST group (53.3% vs. 46.7% at 3 months, P = 0.655; 66.7% vs. 57.8% at 6 months, P = 0.543), but the complete response (CR) rate was statistically significant (20.0% vs. 4.4% at 3 months, P = 0.094; 46.7% vs. 13.3% at 6 months, P = 0.012). The median time to achieve a hematological response in the EPAG and IST groups was 105 days and 184 days, respectively. No difference was observed in the event-free survival (EFS) or overall survival (OS) rates.

CONCLUSION:

Adding EPAG to standard IST as the first-line treatment for children with acquired SAA improved the rapidity of hematological response and the CR rate but did not improve the OR or EFS rates.