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Articles for label Prokš Jan are displayed.. Show all articles

Prognostic significance of primary cilia in relation to selected parameters of the tumor microenvironment of clear cell renal cell carcinoma

04/2020 MUDr. Aneta Rozsypalová; MUDr. Blanka Rosová; Mgr. Alžběta Filipová, Ph.D.; MUDr. Dimitar Hadži Nikolov, Ph.D.; Mgr. Renata Chloupková; MUDr. Igor Richter, Ph.D.; MUDr. Jan Prokš; prof. MUDr. Radoslav Matěj, Ph.D.; prof. MUDr. Roman Zachoval, Ph.D.; prof. MUDr. Bohuslav Melichar, Ph.D.; doc. MUDr. Tomáš Büchler, Ph.D.; doc. MUDr. Josef Dvořák, Ph.D.
The presence of primary cilia, programmed cell death protein-1 receptor (PD-1) expression and intraepithelial CD8+ TIL (tumor infiltrating lymphocytes) expression were retrospectively evaluated in tumor tissue blocks of the resected specimens of the kidney in 104 patients with clear cell renal cell carcinoma. Median overall survival (OS) was significantly longer in patients with lower frequency of primary cilia (<0.002) than in patients with higher frequency of primary cilia (>0.002) (p<0.001). Median OS was significantly longer in patients with lower (<25%) CD8+ TIL expression than in patients with higher (>25%) CD8+ TIL expression (p=0.006). Median OS was significantly longer in patients with lower (<25%) PD-1 expression than in patients with higher (>25%) PD-1 expression (p=0.006). The present study provides the first data on the potential association and combined prognostic significance of frequency of primary cilia, CD8+ TIL expression and PD-1 expression in patients with clear cell renal cell carcinoma.
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Bevacizumab in the treatment of uterine cervix carcinoma

03/2020 Doc. MUDr. Josef Dvořák, Ph.D.; MUDr. Igor Richter, Ph.D.; MUDr. Jan Prokš; MUDr. Aneta Rozsypalová; MUDr. Jana Grimová
A prospective randomized phase III clinical trial, GOG 240, demonstrated a statistically significant increase in progression-free survival and overall survival in the first-line treatment of metastatic or locally advanced inoperable cervical cancer. Bevacizumab in combination with paclitaxel and cisplatin or alternatively in patients who cannot be treated with platinum, paclitaxel and topotecan, may be indicated for the treatment of adult patients with persistent, recurrent or metastatic cervical cancer.
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Immunotherapy of triple negative breast cancer

05/2019 Doc. MUDr. Josef Dvořák, PhD., MUDr. Igor Richter, Ph.D., MUDr. Jan Prokš, MUDr. Aneta Rozsypalová, MUDr. Jana Grimová
Triple negative breast cancer constitutes a heterogeneous group of diseases with limited systemic treatment options. A new perspective treatment modality is immunotherapy with check point inhibitors. The phase III randomized control trial IMpassion130 demonstrated a significantly prolonged progression free survival and overall survival in first line treatment of metastatic or locally advanced inoperable triple negative breast cancer with atezolizumab and nab-paclitaxel, exclusively in patients with programmed death-ligand 1 (PD-L1) ≥ 1 % expression on tumor infiltrating immune cells.
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Patient with metastatic colorectal cancer treated in the third line of therapy with trifluridin/tipiracil

04/2018 MUDr. Jan Prokš, doc. MUDr. Josef Dvořák, Ph.D.
2015 was approved, after the placebo controled phase III trial RECOURSE, trifluridin/tipiracil (Lonsurf®, formerly TAS 102) for the treatment of patients with metastatic colorectal cancer who have been treated with fluoropyrimidine-, oxaliplatin- and irinotecan-based chemotherapy, an anti-VEGF biological therapy, and if RAS wild-type, an anti-EGFR therapy. Trifluridin/tipiracil is an oral analog of fluoropyrimidin in combination with thymidinfosforylase inhibitor. Following case report demonstrates efficiency and good tolerance in the third line of therapy of the patient with metastatic colorectal cancer.
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