Publications by authors named "Panayiotidis P"

MiRNAs have been identified as participants in leukemogenesis by controlling several cellular functions, such as differentiation, proliferation, and apoptosis. Their role in myelodysplastic neoplasms (MDS) pathogenesis is researched due to implementations in early identification, classification, and therapeutical options. IPSS-R, being the most widely used MDS classification, underestimates early biological events that can alter the disease's prognosis.

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Limited data is available on the health-related quality of life (HRQoL) and symptoms of patients with chronic myeloid leukemia (CML) who are in treatment-free remission (TFR). We herein report HRQoL results from the EURO-SKI trial. Patients who had been on tyrosine kinase inhibitors (TKIs) therapy for at least 3 years and achieved MR4 for at least 1 year were enrolled from 11 European countries, and the EORTC QLQ-C30 and the FACIT-Fatigue questionnaires were used to assess HRQoL and fatigue respectively.

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  • Ankle fusion (AF) and total ankle arthroplasty (TAA) are two surgical options for treating severe ankle arthritis to improve mobility and reduce pain.
  • A review of clinical studies focused on how these procedures impact postoperative gait parameters found that most studies showed no significant differences in walking speed and other spatiotemporal measures between AF and TAA patients.
  • However, TAA patients exhibited greater maximum ankle dorsiflexion post-surgery, indicating they may have improved ankle range of motion compared to those who underwent AF, but results on hip and knee motion varied.
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  • A study evaluated the antibody response (AR) in 54 hematopoietic stem-cell transplantation (HSCT) recipients after receiving the BNT162b2 vaccine, showing an initial AR positivity rate of 80.8% at one month, which slightly decreased to 85.7% at three months.
  • Among the cohort, a significant number of participants achieved high antibody titers at both measurement points, but a noted decline in titers occurred from one month to three months post-vaccination.
  • Negative factors impacting AR included pre-treatment conditions like hypogammaglobulinemia and specific medications like anti-CD20 antibodies, suggesting HSCT patients can benefit from vaccination around six months post-transplant even in the
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  • - The EURO-SKI study, the largest clinical trial on stopping tyrosine kinase inhibitors (TKIs) for chronic myeloid leukemia, involved 728 patients and found that 61% maintained major molecular response (MMR) at 6 months and 46% at 36 months.
  • - Key factors influencing MMR maintenance included the length of TKI treatment and the patient's deep molecular remission duration before stopping treatment, along with the type of leukemia transcript.
  • - For patients experiencing late MMR losses, factors like TKI treatment duration, the presence of blasts in blood, and platelet counts at diagnosis were significant predictors of outcomes during the 36-month follow-up.
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Background: Most patients with chronic lymphocytic leukaemia progress after treatment or retreatment with targeted therapy or chemoimmunotherapy and have limited subsequent treatment options. Response levels to the single-agent venetoclax in the relapsed setting is unknown. We aimed to assess venetoclax activity in patients with or without previous B-cell receptor-associated kinase inhibitor (BCRi) treatment.

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Epigenetic regulation has been thoroughly investigated in recent years and has emerged as an important aspect of chronic lymphocytic leukemia (CLL) biology. Characteristic aberrant features such as methylation patterns and global DNA hypomethylation were the early findings of the research during the last decades. The investigation in this field led to the identification of a large number of genes where methylation features correlated with important clinical and laboratory parameters.

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The significance of serum beta-2 microglobulin (sβm) in Hodgkin lymphoma (HL) is controversial. We analyzed 915 patients with HL, who were treated with ABVD or equivalent regimens with or without radiotherapy. Sβm levels were measured by a radioimmunoassay (upper normal limit 2.

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Membrane transporters are important determinants of drug bioavailability. Their expression and activity affect the intracellular drug concentration in leukemic cells impacting response to therapy. Pharmacogenomics represents genetic markers that reflect allele arrangement of genes encoding drug transporters associated with treatment response.

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The long-term survival of Hodgkin lymphoma (HL) patients treated according to the current standard of care is excellent. Combined-modality schedules (ABVD plus radiotherapy) in early-stage disease, along with treatment intensity adaptation to early metabolic response assessed by PET/CT in advanced stage HL, have been the cornerstones of risk stratification and treatment decision-making, minimizing treatment-related complications while keeping efficacy. Nevertheless, a non-negligible number of patients are primary refractory or relapse after front-line treatment.

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Subset #201 is a clinically indolent subgroup of patients with chronic lymphocytic leukemia defined by the expression of stereotyped, mutated IGHV4-34/IGLV1-44 BCR Ig. Subset #201 is characterized by recurrent somatic hypermutations (SHMs) that frequently lead to the creation and/or disruption of N-glycosylation sites within the Ig H and L chain variable domains. To understand the relevance of this observation, using next-generation sequencing, we studied how SHM shapes the subclonal architecture of the BCR Ig repertoire in subset #201, particularly focusing on changes in N-glycosylation sites.

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Ribonucleotide Reductase (RNR) converts ribonucleotides to deoxyribonucleotides required for DNA replication and repair. RNR consists of subunits M1 and M2. It has been studied as a prognostic factor in several solid tumors and in chronic hematological malignancies, but not in chronic lymphocytic leukemia (CLL).

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  • Patients with chronic lymphocytic leukemia (CLL) on ibrutinib treatment often develop resistance due to mutations in the BTK and PLCG2 genes, with varying frequencies impacting patient outcomes.
  • A study of 98 CLL patients revealed that 65% of those who relapsed exhibited at least one mutation in BTK or PLCG2, while 12% of responding patients also had mutations, indicating a potential for progression.
  • The findings suggest that other genetic mutations may contribute to resistance, with BTK mutation profiles differing between relapsing patients, but no significant impact on TP53 mutations was observed, highlighting the complexity of treatment resistance.
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Central nervous system (CNS) involvement is rare in primary mediastinal large B-cell lymphoma (PMLBCL). We aimed to evaluate the incidence of CNS relapse as first treatment failure event and the effect of the induction chemotherapy regimen, central nervous system - international prognostic index (CNS-IPI) and other clinical and laboratory variables on the risk of CNS relapse in 564 PMLBCL patients treated with immunochemotherapy. Only 17 patients (3.

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Background and Objectives: Procalcitonin (PCT) is a useful biomarker for the diagnosis of sepsis. Inflammatory markers are elevated in patients with Hodgkin lymphoma (HL), and yet ongoing infection rarely coexists at diagnosis. PCT levels might be helpful in differentiating bacterial from disease-related inflammation.

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Monocytopenia is a common finding in patients with myelodysplastic syndrome (MDS), but although monocytes may exhibit prognostic significance in MDS due to their role in innate immunity, they have not been incorporated in any prognostic scoring system for MDS. In this study, we analyzed national registry data from 1719 adults with MDS. Monocytopenia was present in 29.

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  • Standardized monitoring of BCR::ABL1 mRNA levels is crucial for managing chronic myeloid leukemia (CML) patients, as established by the European Treatment and Outcome Study for CML (EUTOS) from 2016 to 2021.
  • The study tested secondary, lyophilized BCR::ABL1 reference panels to help local laboratories validate their tests and convert results to the International Scale, leading to significant improvements in the validation of conversion factors (CFs).
  • The findings showed that most participating laboratories could effectively monitor molecular response in samples, highlighting that secondary reference panels provide a reliable method for quality assurance in CML testing.
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Background/aim: Primary mediastinal large B-cell lymphoma (PMLBCL) is an aggressive B-cell non-Hodgkin lymphoma (NHL), whose prognosis has greatly improved since the incorporation of the anti-CD20 monoclonal antibody rituximab into current therapeutic regimens. Evidence, however, on the optimal time interval between consecutive chemoimmunotherapy (CIT) cycles is still scarce. This study aimed to evaluate the efficacy outcomes of the more commonly administered 3-weekly regimens to the biweekly ones in a PMLBCL patients' population, who were mostly treated with rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisolone every 21 days (R-CHOP-21) or R-CHOP-14.

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  • The Phase 3 trials Viale-A and Viale-C investigated the health-related quality of life (HRQoL) in patients with acute myeloid leukemia (AML) who were not suitable for intensive chemotherapy, focusing on treatments with venetoclax (VEN) combined with either azacitidine (AZA) or low-dose cytarabine (LDAC) versus placebo (PBO).
  • Key patient-reported outcomes measured included global health status, physical functioning, cancer fatigue, and overall health status, with results indicating that patients receiving VEN had significantly longer time to deterioration (TTD) in multiple HRQoL metrics compared to those on placebo treatments.
  • The findings suggest that ven
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