Východiská: Z hľadiska epidemiológie predstavuje kolorektálny karcinóm (KRK) celosvetovo jeden z najčastejšie sa vyskytujúcich nádorov. Pokrok vo výskume sa premietol do zníženia úmrtnosti na toto ochorenie, avšak zníženie veku vzniku KRK vytvára obavy vo väčšine rozvinutých krajín. Identifikácia a validácia účinných prognostických biomarkerov sú kľúčové pre zvýšenie presnosti diagnostiky a individualizáciu liečby. Cieľ: Cieľom práce je analyzovať najnovšie údaje o epidemiológii a rizikových faktoroch KRK. Naratívny prehľad sa zameriava aj na zhrnutie súčasných poznatkov o rôznych prognostických biomarkeroch pri liečbe KRK, vrátane ukazovateľov výkonnostného stavu, nutričných a zápalových markerov. Záver: KRK predstavuje závažný zdravotný problém vo väčšine krajín a nádorové biomarkery, ako aj stav pacienta pred liečbou, sú rozhodujúce pre určenie prognózy ochorenia. Ukazovatele nutričného a výkonnostného stavu zohrávajú zásadnú úlohu pri hodnotení stavu pacienta a ovplyvňujú rozhodnutia o liečbe, s potenciálnym dopadom na jej výsledky. Zápalové markery sa javia ako významný prognostický faktor, korelujúc s imunitnou odpoveďou pacienta na nádor a zápalovými procesmi, ktoré môžu viesť k progresii ochorenia. Napriek ich sľubnej prediktívnej sile sa tieto biomarkery zatiaľ bežne nepoužívajú v klinickej praxi z dôvodu potreby ďalšej vedeckej validácie. Integrácia nových biomarkerov do klinickej praxe by však mohla viesť k personalizovanejším liečebným stratégiam a tým k zlepšeniu prežívania pacientov. Pre komplexnejšie posúdenie validity týchto biomarkerov a ich aplikácie v bežnej klinickej praxi je potrebný ďalší výskum.
Background: In terms of epidemiology, colorectal carcinoma (CRC) represents one of the most prevalent tumors worldwide. Progress in research has translated into reduced mortality of the disease, but the trend of early onset CRC troubles most of the developed countries. Identification and validation of effective prognostic biomarkers are crucial for improving diagnostic accuracy and treatment outcomes. Purpose: The objective of the work is to analyze the latest data on the epidemiology and risk factors of CRC. A narrative review also aims to summarize current knowledge about various prognostic biomarkers in the treatment of CRC, including indicators of performance status, nutritional, and inflammatory markers. Conclusion: CRC pose major health problem in most of the countries and the tumor biomarkers as well as patients pre-treatment condition are crucial to establish prognosis of the disease. Nutritional and performance status indicators play an essential role in assessing the patient’s condition and influence treatment decisions, with a potential impact on treatment outcomes. Inflammatory markers have demonstrated significant prognostic value, correlating with the patient’s immune response to the tumor and inflammatory processes that may promote disease progression. Despite promising predictive capabilities, these biomarkers are not yet routinely used in clinical practice due to the need for further research validation. The integration of new biomarkers into clinical practice could lead to more personalized treatment decisions and improved treatment outcomes. For a more comprehensive assessment of the validity of these biomarkers and their application in regular clinical practice, further research is necessary.
- MeSH
- biologické markery MeSH
- fyziologie výživy MeSH
- genetické testování MeSH
- geny ras genetika MeSH
- kolorektální nádory * epidemiologie MeSH
- lidé MeSH
- mikrosatelitní nestabilita MeSH
- prognóza * MeSH
- protoonkogenní proteiny B-Raf genetika škodlivé účinky MeSH
- rizikové faktory * MeSH
- staging nádorů metody MeSH
- zánět komplikace patofyziologie MeSH
- Check Tag
- lidé MeSH
Gliomas are the most common brain tumor type in children and adolescents. To date, diagnosis and therapy monitoring for these tumors rely on magnetic resonance imaging (MRI) and histopathological as well as molecular analyses of tumor tissue. Recently, liquid biopsies (LB) have emerged as promising tool for diagnosis and longitudinal tumor assessment potentially allowing for a more precise therapeutic management. However, the optimal strategy for monitoring gliomas by LB remains to be determined. In this study, we analyzed circulating tumor DNA (ctDNA) from 78 liquid biopsies (plasma n = 44, cerebrospinal fluid n = 34 (CSF)) of 35 glioma patients, determining H3F3A K28M (K27M) and BRAF V600E mutation allele frequency using droplet digital PCR (ddPCR). All results were correlated to clinically relevant parameters including diagnostic imaging and CSF aspiration site (ventricular vs lumbar) with respect to tumor localization. Regarding diagnostic accuracy, the calculated sensitivity score in the H3F3A K27M cohort was 84.61% for CSF and 73.68% for plasma. In the BRAF V600E cohort, we determined a sensitivity of 83.3% in plasma and 80% in CSF. The overall specificity was 100%. With respect to the CSF aspiration, the intra-operatively obtained CSF demonstrated 100% detection rate, followed by ventricular CSF obtained via Ommaya Reservoir/shunt puncture (93%) and CSF obtained via lumbar puncture (66%). Notably, this further correlated with the proximity of the CSF site to tumor localization. Longitudinal CSF monitoring demonstrated a good correlation to clinical and radiological disease evolution. Importantly, we show for the first time that monitoring BRAF V600E by ddPCR could serve as treatment response assessment in gliomas. In summary, our observation may inform recommendations with regard to location of CSF aspiration when incorporating LB into future treatment protocols.
- MeSH
- cirkulující nádorová DNA mozkomíšní mok genetika MeSH
- dítě MeSH
- dospělí MeSH
- gliom * genetika patologie diagnóza MeSH
- histony * genetika MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- mutace MeSH
- nádorové biomarkery * genetika mozkomíšní mok MeSH
- nádory mozku * genetika diagnóza patologie MeSH
- předškolní dítě MeSH
- protoonkogenní proteiny B-Raf * genetika MeSH
- tekutá biopsie metody MeSH
- Check Tag
- dítě MeSH
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
- předškolní dítě MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
Terapie maligního melanomu zaznamenala v poslední dekádě výrazné změny. Důvodem bylo pochopení molekulárních pochodů v patogenezi maligního melanomu a identifikace klíčových struktur kontrolujících průběh imunitní reakce. Standardem léčby pokročilého maligního melanomu u nemocných nesoucích mutaci genu BRAF je v současné době cílená léčba. Kazuistika popisuje účinnost enkorafenibu s binimetinibem po selhání adjuvantní imunoterapie.
The therapy for malignant melanoma has undergone significant changes in the past decade. This progress is attributed to the understanding of molecular processes in the pathogenesis of malignant melanoma and the identification of key structures controlling the immune response. Currently, the standard treatment for advanced malignant melanoma in patients with a BRAF gene mutation is targeted therapy. This case study describes the effectiveness of encorafenib with binimetinib following the failure of adjuvant immunotherapy.
- Klíčová slova
- enkorafenib, biminetinib,
- MeSH
- cílená molekulární terapie * klasifikace metody MeSH
- dospělí MeSH
- imunoterapie klasifikace metody MeSH
- lidé MeSH
- melanom * diagnostické zobrazování diagnóza farmakoterapie MeSH
- protoonkogenní proteiny B-Raf analýza genetika MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- mužské pohlaví MeSH
- Publikační typ
- kazuistiky MeSH
INTRODUCTION: Papillary thyroid carcinoma (PTC) frequently harbors the BRAF V600E mutation. Recent research suggests that aggressive behavior in BRAF V600E+ PTC may be due to an undetected mutation in the TERT gene. This study aims to observe the clinicopathological features of BRAF V600+ PTC and correlate them with surgical treatment complications. METHODS: A retrospective analysis was conducted on the BRAF V600E+ PTC cohort from July 2019 to January 2023. The histopathological features and surgical treatment (total thyroidectomy - group A, total thyroidectomy + central block neck dissection - group B) complications were correlated. Patients with TERT and TP53 mutation were excluded. Next-generation sequencing and real-time PCR were used for genetic analysis. RESULTS: Out of 121 PTCs, 65 cases showed BRAF V600E mutation with the following features: intracapsular spread (13.8%), extracapsular spread (27.7%), extrathyroidal spread (15.4%), multifocality (26.2%), angioinvasion (12.3%), and local metastasis (27.7%). The incidence of surgical complications in group A/B was: reversible recurrent laryngeal nerve (RLN) paresis 3.7/7.1%, RLN paresis permanent 0/2.4%, paresthesia 6.8/23.8%, hypocalcemia 36.4/61.9% on day 1 and 27.3/33.3% on day 3, and bleeding 2.3/9.5%. There was no significant difference in clinicopathological features between the BRAF V600E+ and BRAF V600E- PTC groups. Group B had a significantly higher incidence of hypoacalcaemia on postoperative day 1 (p = 0.047). CONCLUSION: The BRAF V600E mutation will certainly remain important in the preoperative diagnosis of PTC. The more radical surgical procedures currently recommended may be abandoned in the future, particularly elective CLND, which has a higher risk of postoperative complications.
- MeSH
- dospělí MeSH
- krční disekce škodlivé účinky MeSH
- lidé středního věku MeSH
- lidé MeSH
- mutace * MeSH
- nádorový supresorový protein p53 * genetika MeSH
- nádory štítné žlázy * genetika chirurgie patologie MeSH
- papilární karcinom štítné žlázy * genetika chirurgie patologie MeSH
- pooperační komplikace epidemiologie etiologie MeSH
- protoonkogenní proteiny B-Raf * genetika MeSH
- retrospektivní studie MeSH
- senioři MeSH
- telomerasa * genetika MeSH
- tyreoidektomie * škodlivé účinky metody MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
Autoři popisují klinický případ pacientky s metastazujícím melanomem, u níž se v samém počátku cílené léčby enkorafenibem a binimetinibem objevila oční toxicita ve formě bilaterálního odloučení zevních vrstev sítnice. Subjektivní obtíže se zrakem odezněly do 2 měsíců a kontrolní OCT potvrdilo reparaci odloučení. Cílená léčba dabrafenibem a trametinibem v další linii léčby nevykázala příznaky oční toxicity. Diskutována je oční toxicita cílené léčby u melanomu, její typy, závažnost a management. Při každé návštěvě pacienta léčeného cílenou léčbou BRAF a MEK inhibitorem byl měl být pacient tázán na subjektivní obtíže se zrakem. Pro včasnou a správnou diagnostiku oční toxicity je nutná úzká spolupráce se specialistou v oboru oftalmologie.
The authors describe a clinical case of a patient with metastatic melanoma treated with the targeted therapy by encorafenib and binimetinib. In the very beginning of the treatment, the ocular toxicity in the form of the bilateral detachment of the outer retinal layers was detected. Subjective symptoms disappeared in 2 months and follow-up OCT confirmed the restoration of the detachment. The targeted therapy with dabrafenib and trametinib in the subsequent line of the treatment was not complicated by the symptoms of the ocular toxicity. The article discusses the ocular toxicity of the targeted therapy in melanoma, its types, grading, and management. During each patient's visit in case the patient is treated with the targeted therapy by BRAF and MEK inhibitor, the patient should be asked about any subjective vision impairment. The close cooperation with the ophthalmology specialist is crucial for the early and correct diagnosis of the ocular toxicity.
- MeSH
- cílená molekulární terapie škodlivé účinky MeSH
- lidé středního věku MeSH
- lidé MeSH
- melanom * diagnóza farmakoterapie MeSH
- mitogenem aktivované proteinkinasy kinas antagonisté a inhibitory škodlivé účinky terapeutické užití MeSH
- nemoci retiny diagnóza terapie MeSH
- nežádoucí účinky léčiv MeSH
- optická koherentní tomografie MeSH
- protinádorové látky aplikace a dávkování terapeutické užití toxicita MeSH
- protokoly protinádorové kombinované chemoterapie aplikace a dávkování škodlivé účinky terapeutické užití MeSH
- protoonkogenní proteiny B-Raf antagonisté a inhibitory aplikace a dávkování terapeutické užití MeSH
- toxická neuropatie zrakového nervu diagnóza veterinární MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- ženské pohlaví MeSH
- Publikační typ
- kazuistiky MeSH
The eIF4F translation initiation complex plays a critical role in melanoma resistance to clinical BRAF and MEK inhibitors. In this study, we uncover a function of eIF4F in the negative regulation of the rat sarcoma (RAS)/rapidly accelerated fibrosarcoma (RAF)/mitogen-activated protein kinase kinase (MEK)/extracellular signal-regulated kinase (ERK) mitogen-activated protein kinase (MAPK) signaling pathway. We demonstrate that eIF4F is essential for controlling ERK signaling intensity in treatment-naïve melanoma cells harboring BRAF or NRAS mutations. Specifically, the dual-specificity phosphatase DUSP6/MKP3, which acts as a negative feedback regulator of ERK activity, requires continuous production in an eIF4F-dependent manner to limit excessive ERK signaling driven by oncogenic RAF/RAS mutations. Treatment with small-molecule eIF4F inhibitors disrupts the negative feedback control of MAPK signaling, leading to ERK hyperactivation and EGR1 overexpression in melanoma cells in vitro and in vivo. Furthermore, our quantitative analyses reveal a high spare signaling capacity in the ERK pathway, suggesting that eIF4F-dependent feedback keeps the majority of ERK molecules inactive under normal conditions. Overall, our findings highlight the crucial role of eIF4F in regulating ERK signaling flux and suggest that pharmacological eIF4F inhibitors can disrupt the negative feedback control of MAPK activity in melanomas with BRAF and NRAS activating mutations.
- MeSH
- eukaryotický iniciační faktor 4F * metabolismus genetika MeSH
- extracelulárním signálem regulované MAP kinasy metabolismus MeSH
- fosfatasa 6 s dvojí specificitou metabolismus genetika MeSH
- GTP-fosfohydrolasy * metabolismus genetika MeSH
- lidé MeSH
- MAP kinasový signální systém * genetika MeSH
- melanom * genetika metabolismus patologie MeSH
- membránové proteiny * metabolismus genetika MeSH
- mutace * MeSH
- myši MeSH
- nádorové buněčné linie MeSH
- protoonkogenní proteiny B-Raf * genetika metabolismus MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- myši MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
Colorectal cancer (CRC) is a leading global cause of illness and death. There is a need for identification of better prognostic markers beyond traditional clinical variables like grade and stage. Previous research revealed that abnormal expression of cytokeratin 7 (CK7) and loss of the intestinal-specific Special AT-rich sequence-binding protein 2 (SATB2) are linked to poor CRC prognosis. This study aimed to explore these markers' prognostic significance alongside two extraintestinal mucins (MUC5AC, MUC6), claudin 18, and MUC4 in 285 CRC cases using immunohistochemistry on tissue microarrays (TMAs). CK7 expression and SATB2-loss were associated with MUC5AC, MUC6, and claudin 18 positivity. These findings suggest a distinct "non-intestinal" immunohistochemical profile in CRC, often right-sided, SATB2-low, with atypical expression of CK7 and non-colorectal mucins (MUC5AC, MUC6). Strong MUC4 expression negatively impacted cancer-specific survival (hazard ratio = 2.7, p = 0.044). Genetic analysis via next-generation sequencing (NGS) in CK7 + CRCs and those with high MUC4 expression revealed prevalent mutations in TP53, APC, BRAF, KRAS, PIK3CA, FBXW7, and SMAD4, consistent with known CRC mutation patterns. NGS also identified druggable variants in BRAF, PIK3CA, and KRAS. CK7 + tumors showed intriguingly common (31.6%) BRAF V600E mutations corelating with poor prognosis, compared to the frequency described in the literature and databases. Further research on larger cohorts with a non-colorectal immunophenotype and high MUC4 expression is needed.
- MeSH
- dospělí MeSH
- fenotyp MeSH
- fosfatidylinositol-3-kinasy třídy I genetika metabolismus MeSH
- imunohistochemie * MeSH
- keratin-7 metabolismus genetika MeSH
- kolorektální nádory * genetika patologie metabolismus mortalita MeSH
- lidé středního věku MeSH
- lidé MeSH
- mucin 4 genetika metabolismus MeSH
- mucin 5AC genetika metabolismus MeSH
- mucin 6 genetika metabolismus MeSH
- mutace MeSH
- nádorové biomarkery * genetika metabolismus MeSH
- prognóza MeSH
- protoonkogenní proteiny B-Raf genetika MeSH
- protoonkogenní proteiny p21(ras) genetika MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- transkripční faktory MeSH
- vazebné proteiny DNA v oblastech připojení k matrix * genetika metabolismus MeSH
- vysoce účinné nukleotidové sekvenování MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
Pancreatic ductal adenocarcinoma (PDAC) presents significant challenges for targeted clinical interventions due to prevalent KRAS mutations, rendering PDAC resistant to RAF and MEK inhibitors (RAFi and MEKi). In addition, responses to targeted therapies vary between patients. Here, we explored the differential sensitivities of PDAC cell lines to RAFi and MEKi and developed an isogenic pair comprising the most sensitive and resistant PDAC cells. To simulate patient- or tumor-specific variations, we constructed cell-line-specific mechanistic models based on protein expression profiling and differential properties of KRAS mutants. These models predicted synergy between two RAFi with different conformation specificity (type I1⁄2 and type II RAFi) in inhibiting phospho-ERK (ppERK) and reducing PDAC cell viability. This synergy was experimentally validated across all four studied PDAC cell lines. Our findings underscore the need for combination approaches to inhibit the ERK pathway in PDAC.
- MeSH
- duktální karcinom slinivky břišní * farmakoterapie patologie metabolismus MeSH
- inhibitory proteinkinas * farmakologie MeSH
- lidé MeSH
- MAP kinasový signální systém * účinky léků MeSH
- nádorové buněčné linie MeSH
- nádory slinivky břišní * patologie farmakoterapie metabolismus MeSH
- protoonkogenní proteiny p21(ras) metabolismus genetika MeSH
- raf kinasy metabolismus antagonisté a inhibitory MeSH
- synergismus léků MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
Hairy cell leukemia (HCL) and HCL-like disorders have to be distinguished because of their different biology and treatment response. Thus, we conducted a retrospective study on patients with HCL and hairy cell leukemia variant (HCLv) to assess diagnostic algorithms and treatment outcomes in a real-world setting. We analyzed 225 HCL and 26 HCLv patients with median follow-up of 67.9 months (HCL) and 20.1 months (HCLv). Median age at diagnosis was 56.2 (HCL) and 69.5 years (HCLv), male predominance was observed in both groups (76.0% vs. 73.1%). Diagnostics was mostly based on morphological evidence of hairy cells in the peripheral blood and bone marrow. At diagnosis, BRAF V600E mutation was detected in 94.7% of examined HCL patients and in no HCLv patient. Front-line treatment was indicated in 205 (91.1%) HCL and 18 (69.2%) HCLv patients. The majority of HCL patients were administered a cladribine-based regimen (91.2%). Overall response rate (ORR) was higher in cladribine-treated patients compared to those given other treatments (97.7% vs. 81.3%), the same applied with achieving Complete remission (CR) (91.2% vs. 62.5%). HCLv treatment was heterogeneous, but cladribine remained the most frequent option (44.4%) with ORR 81.3% and CR rates 43.8%. Second-line treatment was indicated in 52 HCL and 8 HCLv patients, 25.4% and 44.4% of those treated in first-line. In the whole HCL group, median time to next treatment (TTNT) was not reached and 10-year TTNT was estimated at 74.1%. HCLv patients who underwent first-line treatment had a median TTNT of 56 months. The median overall survival (OS) in HCL patients was not reached compared to HCLv with a median OS of 9.5 years. These data confirm an excellent prognosis for HCL patients treated with cladribine-based therapy. On the contrary, HCLv with its aggressive behavior represents a group of patients in whom novel treatment approaches are needed.
- MeSH
- dospělí MeSH
- kladribin terapeutické užití aplikace a dávkování MeSH
- lidé středního věku MeSH
- lidé MeSH
- následné studie MeSH
- protokoly protinádorové kombinované chemoterapie terapeutické užití MeSH
- protoonkogenní proteiny B-Raf genetika MeSH
- retrospektivní studie MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- vlasatobuněčná leukemie * diagnóza farmakoterapie patologie mortalita terapie MeSH
- výsledek terapie MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- MeSH
- biologická terapie metody MeSH
- biopsie MeSH
- dermatoskopie metody MeSH
- lidé MeSH
- maligní melanom kůže * chirurgie farmakoterapie klasifikace MeSH
- melanom diagnóza farmakoterapie klasifikace MeSH
- pigmentový névus komplikace MeSH
- protoonkogenní proteiny B-Raf antagonisté a inhibitory MeSH
- terciární prevence MeSH
- ultrafialové záření škodlivé účinky MeSH
- Check Tag
- lidé MeSH