Sepsis detection in hematologic and solid tumor malignancies using quantitative inflammatory biomarker differences in a prospective single center study.

Sepsis is a life-threatening condition triggered by a dysregulated immune response to bloodstream infection. Patients with solid and hematologic malignancies are at increased risk of severe infections and the onset of sepsis. Due to the limitations of blood cultures, particularly in culture-negative sepsis, multiple serological biomarkers, such as C-reactive protein (CRP), interleukin-6 (IL-6), procalcitonin (PCT), white blood cells (WBC), lymphocytes (LYM), neutrophils (NEU), and monocytes (MON), are frequently used to diagnose infections.

COVID-19 Vaccine Experience: Loss of Humoral Response Following Autologous Stem Cell Transplantation in Multiple Myeloma Patients and Positive Effect of Booster Dose.

: This prospective study investigated the impact of high-dose chemotherapy and autologous stem cell transplantation (ASCT) on anti-COVID-19 antibody levels in previously vaccinated multiple myeloma (MM) patients with confirmed antibody response (AR). : All patients underwent at least a two-dose regimen mRNA vaccination and later received a high-dose melphalan conditioning regimen and ASCT. : Fourteen MM patients with confirmed AR underwent a total of nineteen ASCT reinfusions; their median age was 55 (34-67).

Combination of Interleukin-6, C-Reactive Protein and Procalcitonin Values as Predictive Index of Sepsis in Course of Fever Episode in Adult Haematological Patients: Observational and Statistical Study.

Haematological patients represent a vulnerable population to opportunistic infections, mainly due to the disease itself and chemotherapy-induced neutropenia. The level of immune suppression strongly increases the importance of timely antibiotic treatment in order to prevent sepsis-related mortality. During the initial fever episode, serum biomarkers are usually used to estimate the probability of blood stream infection prior to the results of microbial diagnosis.

C-Reactive Protein Monitoring and Clinical Presentation of Fever as Predictive Factors of Prolonged Febrile Neutropenia and Blood Culture Positivity after Autologous Hematopoietic Stem Cell Transplantation-Single-Center Real-Life Experience.

Background: Febrile neutropenia (FN) is a medical emergency that requires urgent evaluation, timely administration of empiric broad-spectrum antibiotics and careful monitoring in order to optimize the patient's outcome, especially in the setting of both allogeneic and autologous hematopoietic stem cell transplant (ASCT).

Methods: In this real-life retrospective study, a total of 49 consecutive episodes of FN were evaluated in 40 adult patients affected by either multiple myeloma (thirty-eight) or lymphoma (eleven), following ASCT, with nine patients having fever in both of the tandem transplantations.

Results: Febrile neutropenia occurred a median of 7 days from ASCT.

Tumor growth instability and its implications for chemotherapy.

Optimal delivery of chemotherapy intensity is dependent on host- and tumor-specific characteristics. In this article, the chemotherapy late intensity schedule is revised to account for tumor growth instability, where a small tumor cell fraction emerges that exhibits a higher proliferation rate than the parent strain. Modeling this instability as simplified two-population dynamics, we find that: (a) if this instability precedes the onset of treatment, the slope of the linear increase of the drug concentration for the standard "Norton-Simon late intensity schedule" changes and the initial value of the dose strongly depends on the ratio of the two tumor cell populations and on their distinct growth rates; and (b) if the instability trails the initial treatment, the effective chemotherapeutic drug concentration changes as well.