Background and Objectives: this study aimed to evaluate the prognostic significance of systemic immune-inflammatory markers, particularly the pan-immune-inflammation value (PIV) and systemic immune-inflammation Index (SII), in predicting overall survival among patients with hematologic malignancies. Materials and Methods: This retrospective cohort study included 300 patients diagnosed with various hematologic malignancies between January 2020 and January 2025 at the Department of Hematology, Faculty of Medicine, Mersin University. Baseline laboratory data, including neutrophil, lymphocyte, platelet, and monocyte counts, were collected to calculate SII, NLR, PLR, and PIV. Patients were stratified into high and low groups based on the median values of these markers. Overall survival was analyzed using Kaplan–Meier curves and Cox proportional hazards models, adjusted for age, sex, malignancy type, and disease stage. Results: High levels of PIV and SII were significantly associated with poorer overall survival. In univariate analysis, high PIV (HR: 2.35, 95% CI: 1.68–3.28, p < 0.001) and high SII (HR: 2.12, 95% CI: 1.53–2.95, p < 0.001) were strong predictors of mortality. After multivariate adjustment, PIV (adjusted HR: 2.14, 95% CI: 1.47–3.11, p < 0.001) and SII (adjusted HR: 1.88, 95% CI: 1.32–2.67, p = 0.001) remained independent prognostic factors. Subgroup analyses demonstrated that the predictive power of PIV and SII was consistent across different malignancy types, particularly in acute myeloid leukemia and multiple myeloma patients. Conclusions: Our findings indicated that systemic immune-inflammatory markers, particularly PIV and SII, are valuable prognostic tools in hematologic malignancies. These markers, derived from routine blood counts, offer a simple cost-effective means for improving risk stratification. Incorporating these indices into clinical practice could enhance individualized management strategies. Further prospective studies are warranted to validate these findings.

MicroRNAs (miRNA) are small non-coding RNA molecules that play critical roles in cell differentiation, proliferation and apoptosis and thus regulate haematopoietic stem cells and committed progenitor cells. We analyzed expressions of miRNAs associated with hematopoietic transformation of myeloid, erythroid and megakaryocytic progenitor cells during haematopoiesis (mir155, mir181a, mir221, mir222, mir223, mir451), in patients with primary myelofibrosis (PMF) (n = 22), polycythemia vera (PV) (n = 33), essential thrombocythemia (ET) (n = 49) and in healthy controls (n = 40) by quantitate/real time polymerase chain reaction. RT-PCR testing was negative for BCR–ABL1 fusion gene in all the patients. Mir155 was expressed in higher levels in all 3 disorders (p 0.05). Mir451 levels were lower in all three groups compared to control group (p JAK2V617F positivity, co-morbidities, drugs, and gender did not affect miRNA expressions. This study holds promise for the future application of these molecules for differential diagnosis and as therapeutic targets in Philadelphia chromosome negative myeloproliferative neoplasms.

Objectives: Venous thromboembolism (VTE) is an important cause of morbidity and mortality. A disintegrin and metalloprotease with thrombospondin type-1 repeats-13 (ADAMTS-13) is a metalloprotease that cleaves plasma von Willebrand factor (VWF) multimers. The presence of large VWF multimers in the plasma due to ADAMTS-13 deficiency is the main factor in the pathogenesis of thrombotic thrombocytopenic purpura. The present study aimed to investigate the relation of plasma levels of ADAMTS-13 and VWF antigen with VTE. Methods: The present study included 30 patients with VTE and age- and gender-matched 30 healthy subjects. Patients with any condition (diabetes, icterus, hyperlipidemia, physical, or surgical trauma, acute coronary syndrome, pregnancy, renal insufficiency, liver disease, malignancy, collagen tissue disease, chronic or acute inflammation, drug use affecting thrombocyte function) that could affect plasma VWF antigen or ADAMTS-13 levels were excluded. Plasma ADAMTS-13 and VWF antigen levels in the VTE and control groups were quantitatively determined by enzyme-linked immunosorbent assay method. Results: The median ADAMTS-13 level was 280 ng/ml (minimum–maximum, 70–1120 ng/ml) in the VTE group and 665 ng/ml (minimum–maximum, 350–2500 ng/ml) in the control group; the difference between the groups was significant (P < 0.0001). The mean VWF antigen level was 1750 ± 616 mU/ml in the patient group, which was significantly higher than that of the control group (950 ± 496 mU/ml) (P < 0.0001). Conclusion: Significantly lower ADAMTS-13 levels and significantly higher VWF antigen levels were concluded to be the result of a pathological process rather than an etiological factor for VTE.