J. Radocha

University of Hradec Králové, Königgrätz, Královéhradecký, Czech Republic

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Publications (31)26.05 Total impact

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    ABSTRACT: Objective: To determine the incidence of infection with ganciclovir-resistant cytomegalovirus (CMV) in adult allogeneic hematopoietic stem cell transplant (HSCT) recipients. Clinical resistance or treatment failure was defined as persistent DNAemia or increasing viral load in peripheral blood after 2 weeks of virostatic treatment. The association between the treatment failure and viral resistance was analysed. The presence of ganciclovir – resistant CMV strains was confirmed by genotypic testing able to detect mutations conferring resistance. Methods: In 2012 and 2014, 40 patients who underwent allogeneic HSCT for hematologic malignancies and were treated for human CMV reactivation/disease were followed up prospectively. In patients with treatment failure, CMV DNA was isolated and analysed by nucleotide sequence analysis of the UL 97 and UL 54 genes conferring resistance to the virostatic agent. Results: The treatment failure occurred in seven patients, but ganciclovir resistance conferring mutations were only detected in two of them (mutations L595F and M460I in the UL 97 gene). Another mutation in the UL 97 gene (N510S) was found in a patient with recurrent CMV replication who needed to be retreated but did not meet the criteria for treatment failure. Conclusion: The low incidence of genetically confirmed ganciclovir-resistant CMV isolates in HSCT recipients with relatively common clinical treatment failure suggests that the mechanism underlying slower viral clearance is often other than mutations conferring ganciclovir resistance to the virus. © 2015 ,Czech Medical Association J.E. Purkyne. All rights reserved.
    No preview · Article · Oct 2015 · Epidemiologie, mikrobiologie, imunologie: casopis Spolecnosti pro epidemiologii a mikrobiologii Ceske lekarske spolecnosti J.E. Purkyne

  • No preview · Article · Sep 2015
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    ABSTRACT: Objective: Subcutaneous (SC) application of bortezomib has been recently introduced as a new application route in multiple myeloma (MM) patients. We performed an analysis to compare the outcomes of bortezomib-based therapy in multiple myeloma (MM) patients treated using either intravenous (IV) or subcutaneous (SC) route of administration. Patients and methods: During January 2012 through December 2013, we performed a retrospective analysis of 446 patients with MM treated with bortezomib-based regimens (either once weekly - 63% or twice weekly - 27%) in both, the first line setting, and in relapse, with separate analysis of patients undergoing autologous stem cell transplantation. We assessed the response rates and toxicity profiles in both, IV and SC route of bortezomib administration. Results: The response rates in both IV and SC arm were similar with overall response rate 71.7% vs 70.7%, complete remissions in 13.9% vs 8.6%, very good partial remissions in 30.8% vs 34.5% and partial remissions in 27% vs 27.6%. The most frequent grade ≥ 3 toxicities were anemia, thrombocytopenia and neutropenia, with no significant differences between IV and SC group. There were no significant differences in the rate of peripheral neuropathy (PN). PN of any grade was present in 48% in the IV arm and in 41% in the SC arm. PN grade ≥ 2 was present in 20% vs 18% and PN grade ≥ 3 was present in 6% vs 4%. Conclusions: We conclude that subcutaneous application of bortezomib has similar therapeutic outcomes and toxicity profile as intravenous route of application. In our cohort there was no difference in the incidence of PN, suggesting that PN is dose dependent and might be reduced by lower intensity schemes rather than by the route of administration.
    Full-text · Article · Apr 2015 · PLoS ONE
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    ABSTRACT: IntroductionThe normalization of free light chain ratio (FLCr) has been introduced as a marker of stringent complete remission (CR) of multiple myeloma (MM). There is currently a lack of literature assessing the role of FLCr on MM disease progression and remission status.Patients and methodsA multicentered retrospective review of 125 patients with MM in CR and various FLCr values was completed. Parameters of interest included patient demographics, FLCr values, complete remission (CR)/relapse status, time to progression (TTP). The FLCr values were recorded to provide time dependent findings on the role of FLCr on progression free survival and overall survival (OS).ResultsThe mean follow up time of 125 patients from five hospitals in the Czech Republic was 31 months. A total of 47.2% of patients relapsed (54/125) during the follow-up period. The median TTP of patients with normal FLCr (n=66) was 54.4 months and 40.2 months for patients with abnormal FLCr (n=59) (p=0.217). None of the patients reached median overall survival regardless of FLCr values (p=0.821). In the subgroup of newly diagnosed patients after upfront ASCT, there were 55.6% of patients (35/63) with normal FLCr and 44.4% (28/64) with abnormal FLCr. 34.9% of patients (22/63) relapsed in this subgroup. Within the abnormal FLCr patients, a median TTP was 56.3 months but no median TTP was reached among the normal FLCr patients (p=0.746). Median OS in patients with normal (nFLCr) and abnormal FLCr (aFLCr) was not reached (p=0.787).Conclusion We did not observe any benefit from FLCr normalization in CR in myeloma patients in terms of progression free survival or overall survival.This article is protected by copyright. All rights reserved.
    No preview · Article · Mar 2015 · European Journal Of Haematology
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    ABSTRACT: Aim: The primary end point was to estimate the cumulative risk of hematologic disorders occurring during the follow-up of our cohort. The secondary end points were: to validate known clinical models suggested by the Mayo Clinic group and the Spanish PETHEMA group for the risk of progression from MGUS to MM or related malignancies and to establish a new risk model by the Czech Myeloma Group (CMG model) with better prediction of low-risk MGUS group. Results: 1887 MGUS persons were followed with median 4 years. Malignancies developed in 8.6% (162/1887) cases; MM occurred in 77.2% (125/162) of persons. The risk of progression was 1.5% at 1 year, 7.6% at 5 years and 16.5% at 10 years after diagnosis. The key predictors factors of progression were as follows: age ≥ 69 years, serum M- protein concentration ≥ 15 g/L, bone marrow plasma cells > 5%, pathological sFLC ratio (< 0.26 or >1.65), immunoparesis of polyclonal immunoglobulins and levels of serum hemoglobin at baseline < 120 g/L . Distribution of MGUS persons according to risk groups based on the Mayo Clinic model confirmed predictive power of Mayo Clinic model based on our data although isotype of M- protein was not found as independent predictor. At 10 years, no-risk group had 4.9% risk of progression compared to 16.3%, 24.6%, and 54.9% in groups with 1, 2 or 3 risk factors, respectively (p< 0.001). Immunoparesis instead of DNA aneuploidy was used together with the presence of abnormal plasma cells (aPCs) to validate the modified PETHEMA model. The rates of progression at 2 years were 1.6%, 8.1% and 28.0% for groups with neither, one or both risk factors, respectively (p< 0.001). Based on the 5 parameters with independent predictive value in the univariate analysis we proposed a new CMG model. At 10 years, risk group with 4-5 risk factors had 1.6%, 16.9%, 22.9%, 39.4% and 52.3%, retrospectively (p< 0.001). Conclusion: In the large cohort of MGUS persons, we confirmed validity of previously considered clinical models for the risk of progression from MGUS to MM by the Mayo Clinic group and the Spanish PETHEMA group (model used for SMM). New CMG model for the risk of progression from MGUS to MM or related malignancies was established with an advantage for better identification of MGUS persons at low risk (87% of persons with risk of progression below 10% in 5 years) as well as few persons at the highest risk of progression.
    No preview · Article · Jan 2015 · Klinicka Biochemie a Metabolismus
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    ABSTRACT: Autologous stem cell transplantation (ASCT) became standard of care for patients with multiple myeloma (MM) under the age of 65 years. We routinely perform ASCT for newly diagnosed MM since 1996 in our department. We retrospectively analyzed all 285 transplants in 185 patients done for MM from January 1996 till December 2010. We analyzed overall survival (OS) and progression-free survival (PFS) regarding conditioning, stage, complete or very good partial remission (CR, VGPR) achievement, renal impairment, single vs. double transplant. Estimated 10-years survival of the whole set of patients is 39% (median survival 95 months). Patients with renal impairment show same OS as those without (p = 0.22). Patients show similar overall survival and event free survival regardless of type of transplant. We observed better outcome in terms of overall survival in patients treated with new drugs (p = 0.0014). Reaching CR or VGPR was not translated into better OS (p = 0.30) and EFS (p = 0.10). Also stage of the disease and whether single or double transplant was used did not make any significant difference in the outcome. Stem cell transplantation greatly improved outcome of patients with MM. Poor outcome of allogeneic transplantation in our group of patients is related to high transplant related mortality (20% vs. 0%) and unexpected high relapse rate. There is a trend towards better survival, when new drugs are incorporated at any time in the course of the disease. This fact supports hypothesis that use of these drugs with ASCT should translate into better long-term outcome.
    Full-text · Article · Aug 2013 · Acta medica (Hradec Králové) / Universitas Carolina, Facultas Medica Hradec Králové
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    Full-text · Dataset · Jul 2013
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    ABSTRACT: We analyzed 1156 multiple myeloma (MM) patients treated with thalidomide. The overall response rate was 63.6%, with complete remission in 13.4%. Combined regimens had better outcomes than thalidomide plus dexamethasone or single agent thalidomide. Thalidomide was not able to overcome adverse cytogenetics. Superior results were seen in patients undergoing subsequent autologous stem cell transplantation. The rate of adverse events was low. Thalidomide has a strong potential to improve response and survival measures in patients with standard risk MM. Combined regimens should be used, with lower doses of thalidomide. High risk myelomas should be treated individually.
    No preview · Article · Jul 2013 · Leukemia research
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    Alzbeta Zavrelova · Jakub Radocha · Miriam Lanska · Pavel Zak

    Full-text · Article · Feb 2013 · Biology of Blood and Marrow Transplantation
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    ABSTRACT: Our project was focused on verifying the usefulness of free light chain (FLC) analysis as the new marker for evaluation of the activity of monoclonal gammopathies. Formulated goals of this project represented the most likely beneficial indications for FLC use in clinical practice. We collaborated with Registry of Monoclonal Gammopathies database of Czech Republic and analyzed 1439 patients with monoclonal gammopathies. We were able to confirm validity of the prognostic model of MGUS stratification originally developed by Mayo Clinic. Moreover several other independent prognostic factors not included in the mentioned model have been identified, which we plan to include in the further analysis and development of more detailed prognostic model. Normalization of FLC ratio was not connected to statistically significant prolongation of complete remission duration, however trend towards it was observed.
    No preview · Article · Jan 2012 · Klinicka Biochemie a Metabolismus
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    ABSTRACT: Venous thromboembolism (VTE), with the subsequent risk of pulmonary embolism, is a common adverse effect of thalidomide treatment in patients with multiple myeloma (MM). In our retrospective study, we analyzed candidate single-nucleotide polymorphisms (SNP), CINP (rs7011), CETP (rs289747), ALDH1A1 (rs610529), CDKN1A (rs3829963), GAN (rs2608555), vascular endothelial growth factor (rs699947), and ALDH1A1 (rs168351), previously identified in a large association study based on the hypothesis-driven candidate gene approach nominated by the International Myeloma Foundation "Bank On A Cure" (3404 SNPs). In that study, the researchers built a classification tree that enables prediction of individual risk of VTE in patients with MM. Genotypes of these SNPs were determined in an independent cohort of 111 patients with MM through TaqMan real-time polymerase chain reaction (PCR) allelic discrimination and were used for prediction of individual VTE risk. The results of this study did not confirm the ability of this classification tree to predict VTE risk in patients with MM from the Czech Republic; of these patients, 21 (19%) developed high-grade VTE. However, in patients with VTE, we found higher frequency of the AC genotype in the CDKN1A gene (42.9% vs. 16.7%; odds ratio 3.64) in comparison with the CC genotype (P = .015). SNPs of other genes as well as age and sex of the patients had no statistically significant influence on the risk of VTE. Further studies are needed to confirm the initial analysis that provided predictive information of genetic variations in patients with myeloma that may influence risk of VTE.
    Full-text · Article · May 2011 · Clinical lymphoma, myeloma & leukemia
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    ABSTRACT: Monoclonal gammopathy of undeterminated significance (MGUS) and asymptomatic form of myeloma are associated with a long-term risk of progression to active disease symptomatic multiple myeloma or related malignancy. As far as the malignant transformation of MGUS is concerned, size and type of the serum monoclonal immunoglobulin (monoclonal protein, M-protein, M-Ig), serum kappa and lambda free light chain ratio, number of clonal plasma cells in bone marrow, number of clonal plasma cells in peripheral blood, immunophenotype of plasma cells, and another factors seem to play a predictive role.
    No preview · Article · Jan 2011 · Onkologie
  • K. Machálková · J. Radocha · V. Maisnar
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    ABSTRACT: Hyperviscosity syndrom in patiens with monoclonal gammopathies is caused by hyperproduction of pathological imunoglobulins. This syndrom is a clinical unit with variety of symtomps that result from hypoperfusion of organs. We describe two cases of patiens suffered for multiple myeloma and hyperviscosity. For treatment of this emergent condition we have to start replacement plasmaferesis as soon as possible, and simultaneusly is necessary to start treatment of monoclonal gammopathy.
    No preview · Article · Jan 2011 · Klinicka Biochemie a Metabolismus
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    ABSTRACT: Registry of monoclonal gammopathies together with the programme CRAB represent currently two main projects of the Czech Myeloma Group. The purpose of this project is the prospective data analysis of monoclonal gammopathies patients in the region of the middle and also the east Europe including incidence of diseases, therapeutical modalities used, the treatment results and the most frequent adverse events of therapy. It is ambitious project which could help us to improve the care about patients with monoclonal gammopathies.
    No preview · Article · Jan 2011
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    ABSTRACT: Monoclonal free light chains are produced in the vast majority of monoclonal gammopathie. Monoclonal gammopathy of undetermined significance is benign disorder, which long term outcome could be malignant transformation. Several risk factors of malignant transformation of MGUS have been identified. In this work we analyze data from 1125 patients from Czech monoclonal gammopathies registry RMG. Analysis of free light chain ratio as a marker of stringent complete remission was done on the same basis.
    No preview · Article · Jan 2011 · Klinicka Biochemie a Metabolismus
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    ABSTRACT: Monoclonal gammopathy of undetermined significance (MGUS) is a precancerosis comprising two different kinds of cancer: lymphoid/lymphoplasmocytoid MGUS and plasma cell MGUS that represents about 85% of all MGUS cases. This type of MGUS has low but persistent tendency to transform to malignant disease, mainly multiple myeloma (MM), with frequency of about 1% per year. Using known risk stratification models based on clinical parameters, it is possible to identify patients' groups with average rates of progression as low as 0.26% and as high as 12% per year. However, due to the lack of clear genetic and/or phenotypic markers distinguishing MGUS from MM, we are not able to predict if and when MGUS will progress to MM in individual patients. There are partially overlapping molecular pathogenic events shared by MGUS and MM. Better understanding of pathogenesis of MGUS and MM using molecular-genetic approaches will help disclose the mechanisms of myeloma genesis; it can be also useful for identification of novel molecular targets. The ultimate goal for the near future is to develop better markers for definition of high-risk MGUS patients who will be candidates for early treatment intervention.
    Full-text · Article · Jan 2011 · Klinická onkologie: casopis Ceské a Slovenské onkologické spolecnosti
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    ABSTRACT: Only a few cases of pneumocystis pneumonia (PCP) in Cushing's syndrome have been published in the literature so far. In the majority of these patients, the pneumonia occurred after reduction of the hypercortisolism with medicamentous treatment. We report two cases of PCP during conservative treatment of hypercortisolism. We describe clinical, imaging and laboratory findings in two patients and review published cases of pneumocystits pneumonia in Cushing's syndrome. A 60-year-old woman and 20-year-old man with Cushing's syndrome due to ectopic ACTH syndrome were treated at our department. Both developed pneumocystis pneumonia early after treatment with ketoconazole and ethomidate bromide had been introduced and the levels of cortisol rapidly decreased. PCP prophylaxis in patients with high cortisolemia should be started before treatment of hypercortisolism in current practice. Gradual lowering of plasma cortisol should also reduce the risk of infection by Pneumocystis jiroveci.
    Full-text · Article · Jan 2011 · Acta medica (Hradec Králové) / Universitas Carolina, Facultas Medica Hradec Králové
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    ABSTRACT: Bortezomib (Velcade) is a representative of class of medicines called proteasome inhibitors. This drug represents quite new and unique medical treatment of the patients with multiple myeloma (MM). This article presents a retrospective analysis of effectiveness and adverse effects in patients with multiple myeloma treated at reference centers of CMG in the Czech Republic. A total 424 patients with multiple myeloma treated with bortezomib from June 2004 to June 2010 were evaluated. The median follow-up was 12,4 months. The mean age of patients was 66 year (34,1-86,5) and majority of them were patients with relapsed multiple myeloma. Of the total 424 patients, 205 patients had bortezomib as second line therapy (48,3 %). Assessment of terapeutic response was possible in 83,3 % of treated patients (353/424). Therapeutic response (defined as a ≥ 50 % decrease in the serum MIG) was achieved in 52,7 % (186/353). Among mentioned responses, complete response was obtained in 14,2 % (50/353). The most severe toxicity observed was peripheral neuropathy, grade 3 or higher was developed in 14 % (49/358). There was recorded a thrombocytopenia grade 3 or higher in 28,8 % (103/357), further occurance of infections grade 2 or higher in 33,6 % (121/359) and eventually we could observe increased number of thromboembolic disease as well. Rapid onset of therapeutic responses and high percentage of obtained complete responses are the main reasons of extraordinary clinical benefit of bortezomib. The most of adverse effects are well controllable by means of appropriate prophylactic precautions, short-term interruptions of treatment, followed by adjustments based on the valid recommendations.
    No preview · Article · Jan 2011 · Onkologie
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    ABSTRACT: Monoclonal gammopathy of undetermined significance is a benign disorder, which long term outcome could be malignant transformation. Several risk factors of malignant transformation of MGUS have been identified. In this work we analyze data from 616 patients from Czech monoclonal gammopathies registry RMG. Outcome of this work is the basic descriptive analysis of existing set of the patients which creates the basis for future follow-up and analysis.
    No preview · Article · Jan 2010
  • J Radocha · B Friedecky · L Solcova · J Vavrova · V Maisnar · M Tichy

    No preview · Article · Feb 2009 · Clinical Lymphoma & Myeloma

Publication Stats

48 Citations
26.05 Total Impact Points

Institutions

  • 2007-2015
    • University of Hradec Králové
      Königgrätz, Královéhradecký, Czech Republic
  • 2013
    • Fakultní nemocnice Královské Vinohrady
      Praha, Praha, Czech Republic
  • 2008-2013
    • Charles University in Prague
      Praha, Praha, Czech Republic