OBJECTIVE: To assess the oncological outcomes of patients with high-risk (HR) and very high-risk (VHR) non-muscle-invasive bladder cancer (NMIBC) treated with upfront radical cystectomy (RC) vs Bacillus Calmette-Guérin (BCG) instillations from a contemporary European multicentre cohort. PATIENTS AND METHODS: We conducted a retrospective analysis of 1491 patients diagnosed with HR- or VHR-NMIBC from a European multicentre database between 2015 and 2024. Patients were included if they received either upfront RC or at least five doses of BCG. A 1:1 propensity score matching (PSM) according to clinically relevant variables was applied. Progression was defined as muscle-invasive or metastatic disease. Cumulative incidence plots and multivariable competing risk regression models addressing cancer-specific mortality (CSM) were fitted. RESULTS: Among the 1221 patients with HR- (n = 1221 [90%]) or VHR-NMIBC (n = 121 [10%]), 87 (7.1%) underwent upfront RC. The median follow-up was 2.6 years. After PSM (87 vs 87 patients), the 5-year CSM rate was similar in patients treated with BCG (13%) vs their upfront RC counterparts (16%) (hazard ratio: 1.77, 95% confidence interval [CI] 0.66-4.73; P = 0.3). Of the 1134 patients who initially received BCG, 73 (6.6%) eventually required delayed RC, with 34 (47%) progressing to muscle-invasive bladder cancer before delayed RC. The 3-year CSM rate was comparable in upfront RC (13%) vs delayed RC (11%) among non-progressing patients (P = 0.3). However, patients who progressed before delayed RC had worse 3-year CSM relative to those who did not (13% vs 31%, hazard ratio: 0.32, 95% CI 0.13-0.83; P = 0.018). CONCLUSION: Within a European cohort of patients with HR- and VHR-NMIBC, upfront RC was rarely performed. Patients treated with BCG did not exhibit a CSM disadvantage relative to their upfront RC counterparts. After matching, long-term CSM was similar between BCG therapy and upfront RC. Delayed RC, led to worse outcomes if performed after progression, but matched upfront RC when performed before progression, underscoring importance of timely surgery.
- MeSH
- adjuvancia imunologická * terapeutické užití MeSH
- BCG vakcína * terapeutické užití MeSH
- cystektomie * metody MeSH
- invazivní růst nádoru MeSH
- lidé středního věku MeSH
- lidé MeSH
- nádory močového měchýře neinvadující svalovinu MeSH
- nádory močového měchýře * patologie mortalita chirurgie terapie farmakoterapie MeSH
- retrospektivní studie MeSH
- senioři MeSH
- výsledek terapie MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- multicentrická studie MeSH
- srovnávací studie MeSH
BACKGROUND AND OBJECTIVE: Intravesical mitomycin C (MMC) instillations are recommended to prevent recurrence of intermediate-risk non-muscle-invasive bladder cancer (IR-NMIBC); however, the optimal regimen and dose are uncertain. Our aim was to assess the effectiveness of adjuvant MMC and compare different MMC regimens in preventing recurrence. METHODS: We performed a comprehensive search in PubMed, Scopus, and Web of Science in November 2023 for studies investigating recurrence-free survival (RFS) among patients with IR-NMIBC who received adjuvant MMC. Prospective trials with different MMC regimens or other intravesical drugs as comparators were considered eligible. KEY FINDINGS AND LIMITATIONS: Overall, 14 studies were eligible for systematic review and 11 for meta-analysis of RFS. Estimates of 1-yr, 2-yr, and 5-yr RFS rates were 84% (95% confidence interval [CI] 79-89%), 75% (95% CI 68-82%), and 51% (95% CI 40-63%) for patients treated with MMC induction plus maintenance, and 88% (95% CI 83-94%), 78% (95% CI 67-89%), and 66% (95% CI 57-75%) for patients treated with bacillus Calmette-Guérin (BCG) maintenance, respectively. Estimates of 2-yr RFS rates for MMC maintenance regimens were 76% (95% CI 69-84%) for 40 mg MMC (2 studies) and 66% (95% CI 60-72%) for 30 mg MMC (4 studies). Among the studies included, BCG maintenance provided comparable 2-yr RFS to 40 mg MMC with maintenance (78% vs 76%). RFS did not differ by MMC maintenance duration (>1 yr vs 1 yr vs <1 yr). CONCLUSIONS AND CLINICAL IMPLICATIONS: MMC induction and maintenance regimens seem to provide short-term RFS rates equivalent to those for BCG maintenance in IR-NMIBC. For adjuvant induction and maintenance, 40 mg of MMC appears to be more effective in preventing recurrence than 30 mg. We did not observe an RFS benefit for longer maintenance regimens. PATIENT SUMMARY: For patients with intermediate-risk non-muscle-invasive bladder cancer, bladder treatments with a solution of a drug called mitomycin C (MMC) seem to be as effective as BCG (bacillus Calmette-Guérin) in preventing recurrence after tumor removal. Further trials are needed for stronger evidence on the best MMC dose and treatment time.
- MeSH
- adjuvantní chemoterapie metody MeSH
- aplikace intravezikální MeSH
- hodnocení rizik MeSH
- invazivní růst nádoru * MeSH
- lidé MeSH
- lokální recidiva nádoru prevence a kontrola MeSH
- mitomycin * terapeutické užití aplikace a dávkování MeSH
- nádory močového měchýře neinvadující svalovinu MeSH
- nádory močového měchýře * farmakoterapie patologie MeSH
- protinádorová antibiotika * terapeutické užití aplikace a dávkování MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- metaanalýza MeSH
- přehledy MeSH
- systematický přehled MeSH
Rituximab (RTX) plus chemotherapy (R-CHOP) applied as a first-line therapy for lymphoma leads to a relapse in approximately 40% of the patients. Therefore, novel approaches to treat aggressive lymphomas are being intensively investigated. Several RTX-resistant (RR) cell lines have been established as surrogate models to study resistance to R-CHOP. Our study reveals that RR cells are characterized by a major downregulation of CD37, a molecule currently explored as a target for immunotherapy. Using CD20 knockout (KO) cell lines, we demonstrate that CD20 and CD37 form a complex, and hypothesize that the presence of CD20 stabilizes CD37 in the cell membrane. Consequently, we observe a diminished cytotoxicity of anti-CD37 monoclonal antibody (mAb) in complement-dependent cytotoxicity in both RR and CD20 KO cells that can be partially restored upon lysosome inhibition. On the other hand, the internalization rate of anti-CD37 mAb in CD20 KO cells is increased when compared to controls, suggesting unhampered efficacy of antibody drug conjugates (ADCs). Importantly, even a major downregulation in CD37 levels does not hamper the efficacy of CD37-directed chimeric antigen receptor (CAR) T cells. In summary, we present here a novel mechanism of CD37 regulation with further implications for the use of anti-CD37 immunotherapies.
- MeSH
- antigeny CD20 * imunologie metabolismus genetika MeSH
- antigeny nádorové imunologie genetika MeSH
- B-buněčný lymfom * imunologie terapie genetika farmakoterapie MeSH
- chemorezistence účinky léků MeSH
- chimerické antigenní receptory imunologie genetika metabolismus MeSH
- cyklofosfamid farmakologie terapeutické užití MeSH
- doxorubicin farmakologie aplikace a dávkování MeSH
- imunoterapie * metody MeSH
- lidé MeSH
- monoklonální protilátky farmakologie terapeutické užití MeSH
- nádorové buněčné linie MeSH
- protokoly protinádorové kombinované chemoterapie farmakologie terapeutické užití MeSH
- regulace genové exprese u nádorů MeSH
- rituximab * farmakologie terapeutické užití MeSH
- tetraspaniny * genetika metabolismus MeSH
- vinkristin farmakologie terapeutické užití MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
BACKGROUND: Patients with nonmetastatic prostate cancer (nmPCa) and high prostate-specific antigen (PSA) levels due to the high likelihood of metastasis pose a clinical dilemma regarding their optimal treatment and long-term outcomes after initial local therapy. We aimed to evaluate the oncologic outcomes of patients treated with radical prostatectomy (RP) or radiotherapy (RT) for nmPCa with high PSA levels. METHODS: We queried the Surveillance, Epidemiology, and End Results (SEER) database to identify patients diagnosed with nmPCa who received RP or RT from 2004 through 2015. We included nmPCa patients with high PSA levels categorized as ≥50 and ≥98 ng/mL, the highest level recorded in SEER. We used the Kaplan-Meier method and Cox proportional hazards to analyze cancer-specific (CSS) and overall survival (OS). RESULTS: We included 6177 patients with nmPCa and PSA ≥ 50 ng/mL at diagnosis; 1698 (27%) had PSA ≥ 98 ng/mL. Of these, 1658 (26.8%) underwent RP and 4519 (73.16%) patients received primary RT. Within a median of 113 months (interquartile range 74-150 months), the 5- and 10-year CSS estimates were 92.3% and 81.5% respectively; 10-year OS was 61%. In the PSA ≥ 98 ng/mL subgroup 5- and 10-year CSS estimates were 89.2% and 76%, respectively. In multivariable analyses for CSS, ISUP grade group (p < 0.001), N stage (p < 0.001), treatment with RP (hazard ratio [HR] = 0.60, 95% confidence interval [CI] 0.43-0.83, p < 0.001), and patient's age (p < 0.05) were associated with improved CSS. In the whole cohort of patients with PSA ≥ 50 ng/mL and RP subgroup, PSA failed to retain its independent prognostic value for CSS. CONCLUSIONS: Patients treated with local therapy for nmPCa with very high PSA at diagnosis have relatively good long-term oncological outcomes. Therefore, among well-selected patients with nmPCa, high PSA levels alone should not preclude the use of radical local therapy. Potential selection bias limits inferences about the relative effectiveness of specific local therapies in this setting.
- MeSH
- lidé MeSH
- nádory prostaty * patologie MeSH
- prognóza MeSH
- prostatektomie metody MeSH
- prostatický specifický antigen * MeSH
- retrospektivní studie MeSH
- záchranná terapie MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
Surface protein CD20 serves as the critical target of immunotherapy in various B-cell malignancies for decades, however its biological function and regulation remain largely elusive. Better understanding of CD20 function may help to design improved rational therapies to prevent development of resistance. Using CRISPR/Cas9 technique, we have abrogated CD20 expression in five different malignant B-cell lines. We show that CD20 deletion has no effect upon B-cell receptor signaling or calcium flux. Also B-cell survival and proliferation is unaffected in the absence of CD20. On the contrary, we found a strong defect in actin cytoskeleton polymerization and, consequently, defective cell adhesion and migration in response to homeostatic chemokines SDF1α, CCL19 and CCL21. Mechanistically, we could identify a reduction in chemokine-triggered PYK2 activation, a calcium-activated signaling protein involved in activation of MAP kinases and cytoskeleton regulation. These cellular defects in consequence result in a severely disturbed homing of B cells in vivo.
- MeSH
- aktiny metabolismus MeSH
- antigeny CD20 genetika metabolismus fyziologie MeSH
- B-buněčný lymfom metabolismus patologie MeSH
- B-lymfocyty patologie fyziologie MeSH
- buněčná adheze fyziologie MeSH
- genový knockdown MeSH
- leukemie B-buněčná metabolismus patologie MeSH
- lidé MeSH
- multimerizace proteinu fyziologie MeSH
- myši inbrední NOD MeSH
- myši SCID MeSH
- myši transgenní MeSH
- myši MeSH
- nádorové buněčné linie MeSH
- pohyb buněk fyziologie MeSH
- polymerizace MeSH
- receptory antigenů B-buněk metabolismus MeSH
- signální transdukce imunologie MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- myši MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
