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Hambardzumyan L, Grigoryan H, Badikyan M, Khachatryan H, Sargsyan N, Sulikhanyan A, Tamamyan G, Stebbing J. Disparities in the consensus for treatment of chemotherapy-induced thrombocytopenia. Ecancermedicalscience 2023; 17:1627. [PMID: 38414967 PMCID: PMC10898910 DOI: 10.3332/ecancer.2023.1627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Indexed: 02/29/2024] Open
Abstract
Introduction Chemotherapy-induced thrombocytopenia (CIT) is an arduous complication of chemotherapy to be dealt with, and there are many unmet needs in this field to be addressed on the global front. We have conducted this study to contribute to the understanding of existing knowledge gaps of CIT management and highlight the direction to focus future investigations. Methods This was an academic single-institution report on a cross-sectional study evaluating CIT management practices using platelet (PLT) transfusions by haematologists and oncologists in Armenia. Results Physicians' opinions differed significantly when it came to defining thrombocytopenia by PLT levels. 13.2% of those surveyed considered thrombocytopenia to be when PLT counts fall below 180 × 109/L, 42.1% defined thrombocytopenia to have a PLT threshold of 150 × 109/L, 15.8% and 21.0% specialists setting their thresholds at 140 × 109/L and 100 × 109/L, respectively.All physicians managed CIT by performing PLT transfusions for prophylactic purposes (i.e., when PLT count falls below a certain threshold) with none of them transfusing PLTs only on-demand to address active bleeding. 73.3% haematologists (adult), 57.1% medical oncologists, and 50% paediatricians deemed 10 × 109/L as the threshold PLT count for transfusing afebrile patients with haematologic malignancies (besides acute promyelocytic leukaemia (APL)) and solid tumours.PLT products availability varied among the respondents, with only 53% of them responding that they had 24/7 access. Conclusion CIT is a complication of interest to physicians worldwide and has not been resolved yet. This is the first conducted survey regarding CIT and the initial step for further research.
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Affiliation(s)
- Liana Hambardzumyan
- Hematology Center after Prof. R. H. Yeolyan, Yerevan 0014, Armenia
- Department of Surgery and Cancer, Imperial College, London SW7 2BX, UK
| | - Henrik Grigoryan
- Hematology Center after Prof. R. H. Yeolyan, Yerevan 0014, Armenia
- Department of Pediatric Oncology and Hematology, Yerevan State Medical University, Yerevan 0025, Armenia
- Pediatric Cancer and Blood Disorders Center of Armenia, Hematology Center after Prof. R. H. Yeolyan, Yerevan 0014, Armenia
| | - Maria Badikyan
- Hematology Center after Prof. R. H. Yeolyan, Yerevan 0014, Armenia
- Immune Oncology Research Institute, Yerevan 0014, Armenia
| | - Heghine Khachatryan
- Hematology Center after Prof. R. H. Yeolyan, Yerevan 0014, Armenia
- Department of Pediatric Oncology and Hematology, Yerevan State Medical University, Yerevan 0025, Armenia
| | - Nelly Sargsyan
- Hematology Center after Prof. R. H. Yeolyan, Yerevan 0014, Armenia
- Department of Pediatric Oncology and Hematology, Yerevan State Medical University, Yerevan 0025, Armenia
| | | | - Gevorg Tamamyan
- Hematology Center after Prof. R. H. Yeolyan, Yerevan 0014, Armenia
- Department of Pediatric Oncology and Hematology, Yerevan State Medical University, Yerevan 0025, Armenia
- Pediatric Cancer and Blood Disorders Center of Armenia, Hematology Center after Prof. R. H. Yeolyan, Yerevan 0014, Armenia
- Immune Oncology Research Institute, Yerevan 0014, Armenia
| | - Justin Stebbing
- Department of Surgery and Cancer, Imperial College, London SW7 2BX, UK
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Soghomonyan N, Khachatryan H, Soghomonyan G, Fleming Q. Thrombosis of portal, superior mesenteric, and splenic veins: a case report. Front Pharmacol 2023; 14:1246914. [PMID: 37745074 PMCID: PMC10516573 DOI: 10.3389/fphar.2023.1246914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 08/28/2023] [Indexed: 09/26/2023] Open
Abstract
Patients with venous thrombosis of splanchnic circulation represent a group of high risk with significant morbidity and mortality, if treatment is delayed. We present a patient with thrombosis of portal vein and its tributaries combined with deep venous thrombosis (DVT) of the lower extremities who was successfully treated with conservative management. This patient case highlights the importance of early empiric anti-inflammatory therapy along with systemic anticoagulation to reduce the intestinal inflammation and enteritis and break the vicious circuit resulting in secondary progressive thrombosis of the splanchnic veins, fluid shifts, and functional ileus. Case presentation: A previously healthy 61-years-old female patient with no significant medical history was admitted with progressive upper abdominal pain, nausea and vomiting, low-grade fever, mild signs of ileus, and malaise. Imaging studies revealed portal venous dilation reaching ∼20 mm with near-total obliteration of the lumen by a thrombus. In addition, thrombosis of superior mesenteric and splenic veins with thrombophlebitis was found. Imaging studies also confirmed the presence of DVT of lower extremities including thrombus propagation into the iliac veins. An immediate therapy was started with parenteral antibiotics, anti-inflammatory medications, systemic anticoagulants, and intravenous fluid infusions to restore the circulating volume deficit and treat electrolyte disbalance. With such therapy, the patient's symptoms resolved within a month, and she was discharged from the hospital with full recovery. Heparin infusion was started to reach systemic anticoagulation. With resolution of symptoms, anticoagulation was continued with warfarin. We used non-steroidal anti-inflammatory drugs (NSAIDs) as a component in management of intestinal and systemic inflammation and multifocal thrombosis when the antiphospholipid syndrome was also on the list of differential diagnoses. Conclusion: We present a previously asymptomatic patient with progressive portal venous thrombosis and ascending DVT. Early establishment of diagnosis and initiation of therapy with systemic anticoagulants, anti-inflammatory and antibacterial drugs helped to stop thrombus progression, prevent irreversible intestinal ischemia, and allow for re-canalization of the occluded veins. This case highlights the importance of early interventions to improve the treatment outcome.
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Affiliation(s)
- N. Soghomonyan
- Department of Vascular Surgery and Diabetic Foot, Yerevan Medical Center, Yerevan, Armenia
| | - H. Khachatryan
- Faculty of General Surgery, M. Heratsi State Medical University, Yerevan, Armenia
| | - G. Soghomonyan
- Department of Physiology and Biophysics, Case Western Reserve University, Cleveland, OH, United States
| | - Q. Fleming
- Department of Anesthesiology, The Ohio State University Wexner Medical Center, Columbus, OH, United States
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Gérardin C, Bihan K, Salem JE, Khachatryan H, Gerotziafas G, Fain O, Mekinian A. Drug-induced antiphospholipid syndrome: Analysis of from the WHO international database. Clin Exp Rheumatol 2022; 21:103060. [PMID: 35114404 DOI: 10.1016/j.autrev.2022.103060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 01/28/2022] [Indexed: 12/27/2022]
Abstract
OBJECTIVE As with drug-induced lupus, some drugs may induce an antiphospholipid syndrome (APS). With the always growing numbers of new molecules, the list of the liable treatments evolves rapidly. We herein analyzed VigiBase, the international pharmacovigilance database, to identify drugs suspected of inducing APS. METHODS All the reported cases associated with "anti-phospholipid syndrome" using the preferred term level of medDRA (dictionary of regulated drug activity) when associated with anti-phospholipid antibodies in VigiBase were analyzed. For each treatment, a Bayesian disproportionality indicator (i.e. information component, IC) was calculated. A drug was significantly associated with APS if the 95% lower-end of the IC credibility interval was positive (IC025 > 0). Drugs with potential protopathic bias were excluded. RESULTS From 01/11/2000 to 25/07/2021, 790 reports of suspected drug-induced APS were found in VigiBase. After excluding drugs reported by a single country and drugs with protopathic bias, fourteen drugs (n = 359 reports) were associated with APS with an IC0 25 > 0. These drugs were hormons: ethinylestradiol-etonogestrel and drospirenone-ethynilestradiol; platelet growth factors: eltrombopag, romiplostim; vaccines: Human Papillomavirus vaccine, hepatitis A and B vaccines and typhoid vaccine; antibiotics: minocycline; nonstreroidal anti-inflammatory: rofecoxib; biotherapy: interferon beta-1-a, etanercept; anti-hypertensive drug: hydralazine; bisphosphonates: alendronic acid and antipsychotic: olanzapine. The mean age at diagnosis of drug-induced APS was 39.2 years [29.3;47.9] and there were 63.5% of female patients. The mean delay from first exposition to drug-induced APS was 19.7 months [4.5; 38.8]. Drug-induced APS was reported as a severe side effect in 66.3% of cases: 8.4% with a life-threatening event and 2.5% of death (n = 9). A third (n = 118, 32.9%) pulmonary embolism events were reported and 4.2% (15) cerebral infarctions. 14.8% (53) cases were associated with a systemic lupus, a sub-analysis without lupus cases showed the same severity of cases. CONCLUSION This study identified 14 drugs potentially associated with drug-induced APS that may prove useful in the investigational work-up in any new diagnosis of APS. TRIAL REGISTRATION NUMBER NCT03994302.
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Affiliation(s)
- Christel Gérardin
- Sorbonne Université, APHP, Service de Médecine Interne, Département Hospitalo-Universitaire Inflammation-Immunopathologie-Biotherapie (DMU i3), F-75012 Paris, France; Institut Pierre Louis d'Epidémiologie et de Santé Publique, Sorbonne Université, Inserm, 27 rue Chaligny, 75012 Paris, France
| | - Kevin Bihan
- Department of Pharmacology, Regional Pharmacovigilance Center, Pitié-Salpêtrière Hospital, Assistance Publique - Hôpitaux de Paris (AP-HP), Paris, France
| | - Joe Elie Salem
- APHP.Sorbonne, INSERM, Department of Pharmacology, CIC-1901, UNICO-GRECO Cardio-oncology program, Pitié-salpétrière Hospital, Paris, France
| | | | - Grigorios Gerotziafas
- Sorbonne Université, APHP, Hôpital Tenon, Service de hématologie biologique, F-75012, Paris, France
| | - Olivier Fain
- Sorbonne Université, APHP, Service de Médecine Interne, Département Hospitalo-Universitaire Inflammation-Immunopathologie-Biotherapie (DMU i3), F-75012 Paris, France
| | - Arsene Mekinian
- Sorbonne Université, APHP, Service de Médecine Interne, Département Hospitalo-Universitaire Inflammation-Immunopathologie-Biotherapie (DMU i3), F-75012 Paris, France.
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Mahlangu J, Levy H, Kosinova MV, Khachatryan H, Korczowski B, Makhaldiani L, Iosava G, Lee M, Del Greco F. Subcutaneous engineered factor VIIa marzeptacog alfa (activated) in hemophilia with inhibitors: Phase 2 trial of pharmacokinetics, pharmacodynamics, efficacy, and safety. Res Pract Thromb Haemost 2021; 5:e12576. [PMID: 34430790 PMCID: PMC8371347 DOI: 10.1002/rth2.12576] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/15/2021] [Accepted: 07/27/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Marzeptacog alfa (activated) (MarzAA), a novel recombinant activated human factor VII (FVIIa) variant, was developed to provide increased procoagulant activity, subcutaneous (SC) administration, and longer duration of action in people with hemophilia. OBJECTIVES To investigate if daily SC administration of MarzAA in subjects with inhibitors can provide effective prophylaxis. METHODS This multicenter, open-label phase 2 trial (NCT03407651) enrolled men with severe congenital hemophilia with an inhibitor. All subjects had a baseline annualized bleeding rate (ABR) of ≥12 events/year. Subjects received a single 18 μg/kg intravenous dose of MarzAA to measure 24-hour pharmacokinetics (PK) and pharmacodynamics (PD), single 30 μg/kg SC dose to measure 48-hour PK/PD, then daily SC 30 μg/kg MarzAA for 50 days. If spontaneous bleeding occurred, the dose was sequentially escalated to 60, 90, or 120 μg/kg, with 50 days at the final effective dose without spontaneous bleeding to proceed to a 30-day follow-up. The primary end point was reduction in ABR. Secondary end points were safety, tolerability, and antidrug antibody (ADA) formation. RESULTS In the 11 subjects, the mean ABR significantly reduced from 19.8 to 1.6, and the mean proportion of days with bleeding significantly reduced from 12.3% to 0.8%. Of a total of 517 SC doses, six injection site reactions in two subjects were reported. No ADAs were detected. One fatal unrelated serious adverse event occurred: intracerebral hemorrhage due to untreated hypertension. CONCLUSIONS The data demonstrated that MarzAA was highly efficacious for prophylactic treatment in patients with inhibitors by significantly decreasing bleed frequency and duration of bleeding episodes.
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Affiliation(s)
- Johnny Mahlangu
- Haemophilia Comprehensive Care CenterCharlotte Maxeke Johannesburg Academic HospitalUniversity of the Witwatersrand and NHLSJohannesburgSouth Africa
| | - Howard Levy
- Catalyst BiosciencesSouth San FranciscoCAUSA
| | | | | | - Bartosz Korczowski
- Institute of Medical SciencesCollege of Medical Sciences of the University of Rzeszow, University of RzeszowRzeszowPoland
| | - Levani Makhaldiani
- K. Eristavi National Center of Experimental and Clinical SurgeryTbilisiGeorgia
| | - Genadi Iosava
- Institute of Hematology and TransfusiologyTbilisiGeorgia
| | - Martin Lee
- Fielding School of Public HealthUniversity of California Los AngelesLos AngelesCAUSA
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Zaher U, Khachatryan H, Ewing T, Johnson R, Chen S, Stockle C. Biomass Assessment for Potential Bio-Fuels Production: Simple Methodology and Case Study. ACTA ACUST UNITED AC 2010. [DOI: 10.5276/jswtm.2010.182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Saakian DB, Hu CK, Khachatryan H. Solvable biological evolution models with general fitness functions and multiple mutations in parallel mutation-selection scheme. Phys Rev E Stat Nonlin Soft Matter Phys 2004; 70:041908. [PMID: 15600436 DOI: 10.1103/physreve.70.041908] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2004] [Indexed: 05/24/2023]
Abstract
In a recent paper [Phys. Rev. E 69, 046121 (2004)]], we used the Suzuki-Trottere formalism to study a quasispecies biological evolution model in a parallel mutation-selection scheme with a single-peak fitness function and a point mutation. In the present paper, we extend such a study to evolution models with more general fitness functions or multiple mutations in the parallel mutation-selection scheme. We give some analytical equations to define the error thresholds for some general cases of mean-field-like or symmetric mutation schemes and fitness functions. We derive some equations for the dynamics in the case of a point mutation and polynomial fitness functions. We derive exact dynamics for two-point mutations, asymmetric mutations, and the four-value spin model with a single-peak fitness function. The same method is applied for the model with a royal road fitness function. We derive the steady-state distribution for the single-peak fitness function.
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Affiliation(s)
- David B Saakian
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
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