The Many Faces of Philadelphia: A Mature T-Cell Lymphoma with Variant Philadelphia-Translocation and Duplication of the Philadelphia Chromosome.

T-cell prolymphocytic leukemia (T-PLL) is a rare mature T-cell lymphoma that is usually associated with poor prognosis and short overall survival. We present a case of a 61-year-old woman presenting with T-PLL and the leukemic cells harboring (-breakpoint cluster region; -ABL protooncogene 1) fusion transcripts as the result of a variant of t(9;22)(q34;q11) called Philadelphia translocation: t(9;22;18)(q34;q11;q21). Sequencing revealed a rare transcript with an exon 6 breakpoint corresponding to e6a2 transcripts, which has thus far been reported in only 26 cases of leukemias.

[The role of clonal hematopoiesis in the molecular diagnostics of solid tumors].

This review presents the latest molecular genetic diagnostic and clinical aspects related to clonal hematopoiesis of indeterminate potential (CHIP). CHIP belongs to the continuously expanding group of pre-cancerous conditions, increasingly recognized in routine patient care due to the development of molecular diagnostic tools and the increase in life expectancy. The incidence of CHIP mutations increases with age (1-2% in individuals aged 50 years, 15-45% in those aged 80 years).

[Diagnostic challenges of pediatric gliomas; the role of molecular profiling in everyday diagnostics].

Aim: This study aims to evaluate the diagnostic challenges and molecular aspects of pediatric gliomas, among the most common brain tumors in children, focusing on improving early detection and personalized treatment strategies.

Methods: We conducted a comprehensive review of recent literature, examining current diagnostic techniques, including imaging and histopathological analysis, alongside molecular profiling methods such as next-generation sequencing (NGS) and methylation profiling.

Results: The findings highlight significant diagnostic challenges due to the heterogeneity of pediatric gliomas.

Novel biomarkers of mitochondrial dysfunction in Long COVID patients.

Coronavirus disease 2019 (COVID-19) can lead to severe acute respiratory syndrome, and while most individuals recover within weeks, approximately 30-40% experience persistent symptoms collectively known as Long COVID, post-COVID-19 syndrome, or post-acute sequelae of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection (PASC). These enduring symptoms, including fatigue, respiratory difficulties, body pain, short-term memory loss, concentration issues, and sleep disturbances, can persist for months. According to recent studies, SARS-CoV-2 infection causes prolonged disruptions in mitochondrial function, significantly altering cellular energy metabolism.