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Recombinant human thrombopoietin promotes platelet recovery in DCAG-treated patients with intermediate-high-risk MDS/hypoproliferative AML
Chen X, Wang Y, Zang Y, Wei Z, Zhang W, Wei X, Luo G, Chen L, Zhang Y, Xu Z
Medicine. 2023;102(13):e33373
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Abstract
BACKGROUND This study aimed to explore the effects of recombinant human thrombopoietin (rhTPO) on platelet recovery in decitabine, cytarabine, aclarubicin, and G-CSF (DCAG)-treated patients with intermediate-high-risk myelodysplastic syndrome/hypo proliferative acute myeloid leukemia. METHODS Recruited patients were at a ratio of 1:1 into 2 groups: the rhTPO group (DCAG + rhTPO) and control group (DCAG). The primary endpoint was the time for platelets to recover to ≥ 20 × 109/L. The secondary endpoints were the time for platelets to recover to ≥ 30 × 109/L and ≥ 50 × 109/L, overall survival (OS), and progression-free survival (PFS). RESULTS The time required for platelet recovery to ≥ 20 × 109/L, ≥30 × 109/L, and ≥ 50 × 109/L in the rhTPO group was significantly shorter (6.5 ± 2.2 vs 8.4 ± 3.1 days, 9.0 ± 2.7 vs 12.2 ± 3.9 days, 12.4 ± 4.7 vs 15.5 ± 9.3 days, respectively; all P < .05 vs controls). The amount of platelet transfusion in the rhTPO group was smaller (4.4 ± 3.1 vs 6.1 ± 4.0 U, P = .047 vs controls). The bleeding score was lower (P = .045 vs controls). The OS and PFS were significantly different (P = .009 and P = .004). The multivariable analysis showed that age, karyotype, and time for PLT recovery to ≥ 20 × 109/L were independently associated with OS. Adverse events were similar. CONCLUSIONS This study suggests that rhTPO leads to a faster platelet recovery after DCAG treatment, reduces the risk of bleeding, reduces the number of platelet transfusions, and prolongs the OS and PFS.
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Long-term Safety and Efficacy of Eltrombopag for Advanced Myelodysplastic Syndromes or Acute Myeloid Leukemia and Severe Thrombocytopenia: Results of the ASPIRE Extension Study
Mittelman M, Platzbecker U, Grosicki S, Lawniczek T, Zhu Z, Selleslag D
Acta haematologica. 2023
Abstract
ASPIRE, a three-part, international, phase II trial (ClinicalTrials.gov identifier: NCT01440374), investigated eltrombopag efficacy and safety in patients with advanced myelodysplastic syndrome or acute myeloid leukemia, and grade 4 thrombocytopenia (<25 × 109 platelets/L). Approximately 30-65% of patients in this open-label extension phase experienced clinically relevant thrombocytopenic events; no conclusions could be made regarding long-term efficacy (non-randomized design, no placebo control), and survival rates may simply reflect advanced disease. Long-term safety was consistent with the double-blind phase and contrasted with earlier SUPPORT study findings in higher-risk patients, suggesting that eltrombopag may have a role in treating thrombocytopenia in patients with low-/intermediate-risk myelodysplastic syndrome.
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Symptom burden and quality of life in patients with high-risk essential thrombocythaemia and polycythaemia vera receiving hydroxyurea or pegylated interferon alfa-2a: a post-hoc analysis of the MPN-RC 111 and 112 trials
Mazza, G. L., Mead-Harvey, C., Mascarenhas, J., Yacoub, A., Kosiorek, H. E., Hoffman, R., Dueck, A. C., Mesa, R. A.
The Lancet. Haematology. 2022;9(1):e38-e48
Abstract
BACKGROUND Patients with essential thrombocythaemia or polycythaemia vera have several symptoms that can worsen their quality of life. We aimed to assess how symptom burden changes over time with cytoreductive therapy. METHODS We performed a post-hoc analysis of data from MPN-RC 111-a single-arm, open-label, phase 2, multicentre trial at 17 hospitals and cancer centres in Italy and the USA, evaluating the clinical-haematological response to pegylated interferon alfa-2a in patients who were resistant or intolerant to hydroxyurea (NCT01259817)-and MPN-RC 112-a randomised, open-label, phase 3, multicentre trial at 25 hospitals and cancer centres in France, Germany, Israel, Italy, the UK, and the USA, comparing the clinical-haematological response to pegylated interferon alfa-2a versus hydroxyurea in therapy-naive patients with either high-risk essential thrombocythaemia or polycythaemia vera (NCT01258856). Patients completed the Myeloproliferative Neoplasm Symptom Assessment Form (MPN-SAF) and the European Organisation for the Research and Treatment of Cancer Core Quality of Life Questionnaire through 12 months after initiation of treatment as secondary endpoints. In this post-hoc analysis, we examined the association of symptom burden with the clinical-haematological response at 12 months and the effect of baseline symptom burden (ie, high burden [total symptom score ≥20] vs low burden [total symptom score <20]) on subsequent changes in symptoms, estimated via mixed models. A clinically significant improvement in symptom burden was defined as 50% or greater improvement in the MPN-SAF total symptom score from baseline to 12 months in patients with a total symptom score greater than zero at baseline. FINDINGS 135 patients were enrolled in MPN-RC 111 between Feb 15, 2012, and Dec 23, 2015, and 168 were enrolled in MPN-RC 112 between Sept 24, 2011, and June 30, 2016. For this analysis, we included data from 114 patients from MPN-RC 111 (64 [56%] with essential thrombocythaemia and 50 [44%] with polycythaemia vera; 56 [49%] were female, and 100 [91%] of 110 were white) and 166 patients from MPN-RC 112 (79 [48%] with essential thrombocythaemia and 87 [52%] with polycythaemia vera; 68 [41%] were female, and 145 [93%] of 156 were white). At 12 months, a clinically significant improvement in symptom burden was reported by 12 (32%) of 38 complete responders and seven (20%) of 35 partial responders treated with pegylated interferon alfa-2a in MPN-RC 111; five (19%) of 27 complete responders and six (18%) of 34 partial responders treated with pegylated interferon alfa-2a in MPN-112; and eight (27%) of 30 complete responders and six (22%) of 27 partial responders treated with hydroxyurea in MPN-112. More complete and partial responders reported a clinically significant improvement than did non-responders (44 [22%] of 191 complete and partial responders vs four [5%] of 76 non-responders; Fisher's exact p=0·0003). Symptom burden improved between 3 and 12 months in patients with high baseline symptom burden, both those treated with pegylated interferon alfa-2a (mean total symptom score change -10·2, 95% CI -13·2 to -7·2) and those treated with hydroxyurea (-6·8, -11·2 to -2·4). However, symptom burden worsened between 3 and 12 months in patients with low baseline symptom burden (patients treated with pegylated interferon alfa-2a: mean total symptom score change 3·2, 95% CI 0·9 to 5·4; patients treated with hydroxyurea: 3·4, 0·6 to 6·2). INTERPRETATION Results can inform treatment decisions, including treatment timing and goals in managing essential thrombocythaemia and polycythaemia vera, because measuring symptom burden from the patient perspective is crucial to understanding treatment efficacy and tolerability. FUNDING US National Cancer Institute of the National Institutes of Health, and Roche Genentech.
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Prophylactic tranexamic acid in patients with hematologic malignancy: a placebo controlled, randomized clinical trial
Gernsheimer TB, Brown SP, Triulzi DJ, Key NS, El Kassar N, Herren H, Poston JN, Boyiadzis M, Reeves BN, Selukar S, et al
Blood. 2022
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Abstract
Evidence of effectiveness of prophylactic use of tranexamic acid (TXA) in thrombocytopenia is lacking. To determine whether TXA safely reduces bleeding incidence in patients undergoing treatment for hematologic malignancies, a randomized double blind clinical trial was conducted June 2016 through June 2020. Of 3120 screened adults 356 patients were eligible and enrolled, and 337 patients (mean age, 53.9; 141 (41.8%) women), randomized to 1,300mg TXA orally or 1,000mg TXA intravenously (n=168) versus placebo (n=169) thrice daily for maximum 30 days. 330 patients were activated when their platelet counts fell below 30,000/µl; 279 (83%) had complete outcome ascertainment. WHO grade 2 or higher bleeding was observed in the 30 days following activation in 50.3% (73/145) and 54.2% (78/144) of patients in the TXA and placebo groups, adjusted odds ratio: 0.83 (95%CI:0.50,1.34; p=0.44). There was no statistically significant difference in mean number of platelet transfusions (0.1;95%CI:-1.9,2.0), mean days alive without grade 2 or higher bleeding (0.8;95%CI:-0.4,2.0), thrombotic events (6/163 (3.7%) TXA, 9/163 (5.5%) placebo), or deaths due to serious bleeding. Most common adverse events were: diarrhea [(116/164 (70.7%) TXA and 114/163 (69.9%) placebo)]; febrile neutropenia [111/164 (67.7%) TXA, 105/163 (64.4%) placebo]; fatigue [106/164 (64.6%) TXA, 109/163 (66.9%) placebo]; and nausea [104/164 (63.4%) TXA, 97/163 (59.5%) placebo]. Among patients with hematologic malignancy undergoing chemotherapy or hematopoietic stem cell transplantation, prophylactic treatment with tranexamic acid compared with placebo did not significantly reduce the risk of WHO grade 2 or higher bleeding. Trial Registration: Clinicaltrials.gov Identifier: NCT02578901.
PICO Summary
Population
Patients who were thrombocytopenic due to primary bone marrow disorders or chemotherapy, immunotherapy, and/or radiation therapy (n= 337).
Intervention
Tranexamic acid (TXA) orally or intravenously (n= 168).
Comparison
Placebo (n= 169).
Outcome
The primary outcome of WHO grade 2 or higher bleeding during the first 30 days after activation was observed for 73 out of 145 (50.3%) and 78 out of 144 (54.2%) patients in the TXA and placebo groups, respectively. There was no statistically significant difference in mean number of platelet transfusions (0.1), mean days alive without grade 2 or higher bleeding (0.8), thrombotic events (6/163 (3.7%) TXA, 9/163 (5.5%) placebo), or deaths due to serious bleeding.
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Oral eltrombopag versus subcutaneous recombinant human thrombopoietin for promoting platelet engraftment after allogeneic stem cell transplantation: A PROSPECTIVE, NON-INFERIORITY, RANDOMIZED CONTROLLED TRIAL
Wen B, Zhang X, Chen S, Fan J, Yang S, Cai Y, Wang P, Zhang Q, Gu Q, Du X
Hematological oncology. 2022
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Abstract
Delayed platelet engraftment (DPE) is associated with poor survival and increased transplantation-related mortality after allogeneic haematopoietic stem cell transplantation (allo-HSCT). Therefore, treatments are needed to improve platelet engraftment and prevent DPE. We performed a phase 3, non-inferior, randomized controlled study of eltrombopag or recombinant human thrombopoietin (rhTPO) to promot platelet engraftment after allo-HSCT. Candidates for allo-HSCT were randomly assigned to receive oral eltrombopag (50mg daily) or subcutaneous rhTPO (15000U daily ) from the first-day post-transplantation. The primary endpoint was the cumulative numbers of platelet engraftment (platelet recovery ≥ 20 × 10(9) /L, without transfusion, for seven consecutive days) on day 60 after transplantation. We performed intention-to-treat analyses with a non-inferior margin of -15%. A total of 92 participants underwent randomization. 44 and 48 patients were randomized to the eltrombopag and rhTPO groups, respectively. The median duration of follow-up was 360 days (range: 12-960 days). The cumulative incidence of platelet engraftment on day 60 after transplantation in eltrombopag group was 86.4% (38/44) compared with 85.4% (41/48) in the rhTPO group (absolute risk difference [ARD] 1%, one-sided lower limit of 95% confidence interval [CI] -13.28%, P(non-inferirioty) =0.014). The rate of DPE in the eltrombopag group was 6.8% (3/44) compared with 12.5% (6/ 48) in the rhTPO group (ARD -5.7%, one-sided higher limit of 95% CI 6.28%, P(non-inferirioty) =0.063). Approximately, 3/4 of non-haematologic adverse events were not observed in the eltrombopag group but three patients (3/48, 6%) experienecd them in the rhTPO group. In addtion, platelet transfusions unite from day 0 to day 21, or from day 22 to day 60, progression-free survival, overall survival were not significantly different between both groups. Eltrombopag was non-inferior to rhTPO in promoting platelet engraftment post allo-HSCT for patients with haematological malignancy. Oral eltrombopag was more convenient for patients than subcutaneous rhTPO (NCT03515096). This article is protected by copyright. All rights reserved.
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rhTPO combined with chemotherapy and G-CSF for autologous peripheral blood stem cells in patients with refractory/relapsed non-Hodgkin's lymphoma
Zhu J, Hao SG, Hu J, Zhuang JL, Wang C, Bai HT
Cancer management and research. 2019;11:8371-8377
Abstract
Objective: The mobilization and collection of sufficient autologous peripheral blood stem cells (APBSCs) are important for the fast and sustained reconstruction of hematopoietic function after autologous transplantation. This study aims to evaluate the mobilization effect and safety of thrombopoietin (TPO) combined with chemotherapy + G-CSF for APBSCs in patients with refractory/relapsed non-Hodgkin's lymphoma. Methods: A total of 78 patients were included in the present study. After receiving mobilization chemotherapy, all patients were randomly divided into two groups: TPO group (n=40), patients were given subcutaneous injection of rhTPO + G-CSF, and control group (n=38), patients were given subcutaneous injection of G-CSF. The primary endpoint was the total number of obtained CD34+ cells. The secondary endpoints were the mononuclear cell count, the proportion of target and minimum mobilization, the engraftment time of neutrophils and platelets after APBSCT, the number of platelet and red blood cell infusions, the incidence of infectious fever and fever duration, and TPO-related side effects in patients. Results: TPO participation significantly increased the total CD34+ cell count. A higher proportion of patients in the TPO group achieved the minimum and target CD34+ cells, when compared to the control group. TPO-related adverse events were not observed in either of these groups. In addition, there were no significant differences in engraftment time, the number of platelet and red blood cell transfusions, the incidence of infectious fever, and fever duration between these two groups. Conclusion: TPO combined with chemotherapy + G-CSF can safely and effectively enhance the mobilization effect for APBSCs in patients with refractory/relapsed non-Hodgkin's lymphoma.
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Recombinant human thrombopoietin (rh-TPO) for the prevention of severe thrombocytopenia induced by high-dose cytarabine: a prospective, randomized, self-controlled study
Wang, Z., Fang, X., Huang, H., Hong, H., Li, X., Guo, C., Fu, X., Zhang, M., Lam, S. T., Li, S., et al
Leukemia & Lymphoma. 2018;59(12):2821-2828
Abstract
The aim of this randomized phase II study was to investigate the optimal timing of the administration of thrombopoietin to prevent cytarabine-induced thrombocytopenia. Fifty-two patients who were scheduled for high-dose cytarabine treatment were randomly assigned to receive either the standard prophylactic mode (starting thrombopoietin, 15,000 units/day on days 2-11) or the pre-chemo mode (starting thrombopoietin, 15,000 units/day on days -4, -2, and 2-9) during the first cycle of chemotherapy with a switch to the other mode in the second cycle. The thrombocytopenia rate in the standard mode and the pre-chemo mode were PLT < 50 × 10(9)/L, 67.3% versus 46.2% (p = .001); and PLT < 25 × 10(9)/L, 48.1% versus 26.9% (p = .001). The platelet transfusion rate was reduced in pre-chemo mode, with 7 patients requiring 10 units of platelets, whereas 13 patients required 24 units in standard mode (p = .038). Grade III/IV thrombopoietin-related toxicity was not observed. The prophylactic use of thrombopoietin was effective and safe. Trial registration: ChiCTR-OPB-15007591.
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Eltrombopag for advanced myelodysplastic syndromes or acute myeloid leukaemia and severe thrombocytopenia (ASPIRE): a randomised, placebo-controlled, phase 2 trial
Mittelman M, Platzbecker U, Afanasyev B, Grosicki S, Wong RSM, Anagnostopoulos A, Brenner B, Denzlinger C, Rossi G, Nagler A, et al
The Lancet. Haematology. 2017;5((1):):e34-e43. e34
Abstract
BACKGROUND Thrombocytopenia is a life-threatening complication in patients with advanced myelodysplastic syndromes (MDS) and acute myeloid leukaemia (AML). In this study (ASPIRE), we aimed to assess eltrombopag, an oral thrombopoietin receptor agonist, for thrombocytopenia (grade 4) treatment in adult patients with advanced MDS or AML. METHODS ASPIRE consisted of an open-label, double-blind phase for 8 weeks and a randomised, double-blind phase (parts 1 and 2, reported here) for 12 weeks, and an open-label extension (part 3). Eligible patients were men and women aged 18 years or older, with intermediate-2 or high-risk MDS or AML, with bone marrow blasts of 50% or less, and had either grade 4 thrombocytopenia due to bone marrow insufficiency (platelet counts <25 x 10(9) per L) or grade 4 thrombocytopenia before platelet transfusion, with 25 x 10(9) platelets per L or greater after transfusion. Additionally, eligible patients had at least one of the following within the screening period of 4 weeks: platelet transfusion, symptomatic bleeding, or platelet count of less than 10 x 10(9) per L. During part 1, patients received eltrombopag, and dose-escalation criteria for part 2 were determined. In part 2, we randomly allocated patients 2:1 using an interactive voice-response system to eltrombopag or placebo, stratified by baseline platelet count (<10 x 10(9) platelets per L vs ≥10 x 10(9) platelets per L) and disease (MDS vs AML). In parts 1 and 2, patients received supportive standard of care and initiated eltrombopag or placebo at 100 mg per day (50 mg per day for patients of east-Asian heritage) to a maximum of 300 mg per day (150 mg per day for patients of east-Asian heritage). The part 2 primary objective was assessed by a composite primary endpoint of clinically relevant thrombocytopenic events (CRTE) during weeks 5-12, defined as one of the following events, either alone or in combination: grade 3 or worse haemorrhagic adverse events; platelet counts of less than 10 x 10(9) per L; or platelet transfusions. Efficacy analyses were based on intention to treat; clinically meaningful efficacy was defined as 30% absolute difference between groups. This trial is registered with ClinicalTrials.gov, number NCT01440374. FINDINGS In part 1, 17 patients received eltrombopag and 11 patients completed treatment; four experienced significantly increased platelet counts, and ten had reduced platelet transfusion requirements. In part 2 we randomly allocated 145 patients to receive supportive care plus eltrombopag (n=98) or placebo (n=47); similar proportions had MDS (50 [51%] patients to eltrombopag, 22 (47%) patients to placebo) or AML (48 [49%] patients to eltrombopag, 25 [53%] patients to placebo). Average weekly CRTE proportions from weeks 5-12 were significantly lower with eltrombopag (54% [95% CI 43-64]) than with placebo (69% [57-80], odds ratio [OR] 0.20, 95% CI 0.05-0.87; p=0.032) although the difference between treatment groups was less than 30%. The most common grade 3 and grade 4 adverse events were fatigue (six [6%] in the eltrombopag group and one [2%] in the placebo group), hypokalaemia (six [6%] and two [4%]), pneumonia (five [5%] and five [11%]), and febrile neutropenia (five [5%] and six [13%]). Serious adverse events were reported in 56 (58%) eltrombopag-treated patients and 32 (68%) placebo-treated patients. Seven eltrombopag recipients and two placebo recipients had serious adverse events that were suspected to be study drug-related (eltrombopag: acute kidney injury, arterial thrombosis, bone pain, diarrhoea, myocardial infarction, pyrexia, retinal vein occlusion, n=1 each; placebo: vomiting, white blood cell count increased, n=1 each). Two eltrombopag recipients (arterial thrombosis n=1; myocardial infarction n=1) and no placebo recipients experienced fatal serious adverse events suspected to be study drug-related. INTERPRETATION No new safety concerns were noted with eltrombopag and the trial met the primary objective of a reduction in CRTEs; eltrombopag might be a treatment option for thrombocy
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Randomized, double-blind, placebo-controlled, multicenter study evaluating epoetin alfa versus placebo in anemic patients with IPSS Low- Int1 risk MDS
Fenaux P, Santini V, Aloe Spiriti MA, Giagounidis A, Schlag R, Radinoff A, L Gercheva-Kyuchukova L, Anagnostopoulos A, E Oliva E, Symeonidis A, et al
Haematologica. 2016;101((s1)):71.. p248.
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10.
Low-dose fludarabine with or without darbepoetin alfa in patients with chronic lymphocytic leukemia and comorbidity: primary results of the CLL9 trial of the German CLL Study Group
Goede V, Busch R, Bahlo J, Chataline V, Kremers S, Muller L, Reschke D, Schlag R, Schmidt B, Vehling-Kaiser U, et al
Leukemia & Lymphoma. 2016;57((3)):596-603.
Abstract
This study was planned as a phase 3 trial to investigate low-dose fludarabine with or without darbepoetin alfa in older patients with previously untreated or treated chronic lymphocytic leukemia (CLL) and comorbidity. Due to slow recruitment, the study was terminated prematurely after accrual of 97 patients who, on average, were 74 years old and had a cumulative illness rating scale (CIRS) total score of 5. We report toxicity and efficacy of the study treatment. Grade 3-5 neutropenia and infection were observed in 25% and 10% of patients, respectively. Response was seen in 73% (5% complete remissions). Median event-free and overall survival was 12.2 and 44.8 months, respectively. No differences in outcome were found for patients treated with versus without darbepoetin alfa. In subjects with progressive/recurrent CLL during or after study treatment, overall survival was similar for patients receiving chemotherapy versus chemoimmunotherapy as salvage treatment.