Expression of BCL2, TP53, FOXA1, and GATA3 in pTa bladder cancer recurrence.

OBJECTIVES: In this study, we analyzed pTa bladder cancer (BC) for molecular markers BCL2, TP53, FOXA1, and GATA3 in relation to cancer recurrence. METHODS: We analyzed samples of 79 patients with the pTa stage of BC using a real-time polymerase chain reaction (real-time PCR) between September 2018 and September 2020. The expression levels of BCL2, TP53, FOXA1, and GATA3 were compared with homologous non-tumor bladder tissue. RESULTS: Expression of FOXA1, GATA3, and TP53 was significantly higher (p<0.01) in NMIBC samples compared to homologous non-tumor tissue. The expression of TP53 and FOXA1 in pTa was significantly lower (p<0.01) in the high-grade (HG) tumor when compared to the low-grade (LG) tumor. In contrast, the relative quantification (RQ) of GATA3 was significantly higher (p<0.01) in HG pTa. Patients with recurrence (pTa=33) had significantly higher expression of TP53, and GATA3 (p<0.01), and the gene of FOXA1 (p<0.01) had a significantly lower expression when compared to pTa tumors without recurrence. The expression of Bcl-2 was not statistically significant. CONCLUSION: Our results, indicate, that comparing expression levels of these genes in cancer and cancer-free tissue could provide valuable data, as patients with pTa BC recurrence within up to 54 months of follow-up had a significantly higher RQ of TP53, GATA3, and FOXA1 when compared to pTa BC patients without recurrence (Tab. 2, Fig. 8, Ref. 54). Text in PDF www.elis.sk Keywords: bladder cancer, gene expression, recurrence, GATA3, FOXA1, TP53, BCL2.

Molecular classification of urothelial bladder carcinoma.

Urothelial bladder carcinoma (UC) ranks among the top ten most commonly diagnosed cancers worldwide on an annual basis. The standardized classification system for urothelial bladder tumors is the Tumor, Node, Metastasis classification, which reflects differences between non-muscle-invasive bladder carcinoma (NMIBC) and muscle-invasive bladder carcinoma (MIBC) and it depends on the extent to which tumor has infiltrated the bladder wall and other tissues and organs. NMIBC and MIBC exhibit great intrinsic heterogeneity regarding different prognoses, survival, progression, and treatment outcomes. In recent years, studies based on mRNA expression profiling revealed the existence of biologically relevant molecular subtypes of UC, which show variant molecular features that can provide more precise stratification of UC patients. Here, we present a complex classification of UC based on mRNA expression studies and molecular subtypes of NMIBC and MIBC in detail with regard to different mRNA expression profiles, mutational signatures, and infiltration by non-tumor cells. The possible impact of molecular subtyping on treatment decisions and patients' outcomes is outlined, too.

[Idiopathic thrombocytopenia refractery to therapy of cyclosporine A in clinical practice - case report]. / Idiopatická trombocytopénia refraktérna na terapiu cyklosporínom A v klinickej praxi.

Primary immune thrombocytopenia (idiopathic thrombocytopenic purpura; ITP) is an autoimmune disorder characterized by isolated thrombocytopenia without abnormalities in the erythroid and myeloid/lymphoid lineages. The incidence of ITP in adults is estimated at approximately 1.6-3.9 per 100 000 persons/year. The aim of this study was to analyze a case report of a patient with diagnosed immune thrombocytopenia (D69.3) resistant to cyclosporine A therapy as well as an evaluation of factors that could contribute to an inadequate response to cyclosporine A. The results show a multifactorial origin of thrombocytopenia and a possible effect on refractivity to cyclosporine A therapy caused by long-term smoking, MDR-1 gene polymorphism, genetic predisposition to autoimmune diseases, allergic reactions as a manifestation of hypersensitivity in the immune system, controversial compliance of the patient, overcome infections as well as impact of drugs taken.Key words: immune thrombocytopenia refractery form cyclosporine A therapy platelets.