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Dive into the research topics where Timo Purmonen is active.

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Featured researches published by Timo Purmonen.


Clinical Therapeutics | 2008

Economic evaluation of sunitinib malate in second-line treatment of metastatic renal cell carcinoma in Finland

Timo Purmonen; Janne Martikainen; Ej Soini; Vesa Kataja; Riikka-Liisa Vuorinen; Pirkko-Liisa Kellokumpu-Lehtinen

BACKGROUND Cytokine therapy is currently used as first-line treatment of metastatic renal cell carcinoma (mRCC). Until recently, treatments with proven efficacy after the failure of first-line cytokine therapy were not available. In recent clinical trials, sunitinib has been associated with good response rates in patients with mRCC. OBJECTIVE The aim of this study was to analyze the cost-effectiveness of sunitinib as second-line therapy for cytokine-refractory mRCC compared with current routine clinical practice in Finland (ie, best supportive care [BSC], including palliative biochemotherapy). METHODS A probabilistic decision-analytic model was developed to estimate the cost-effectiveness of sunitinib. Data were gathered from clinical trials, literature sources, and expert opinions, as well as from a local sample (n = 39) from 2 university hospitals in Finland. Clinical experts treating patients with mRCC in Finland provided the information on care practices of prescribing sunitinib. The analysis was conducted from the perspective of the health care payer in Finland. RESULTS According to estimated incremental cost-effectiveness ratios (ICERs), 1 progression-free month gained cost euro4802 (2005 Euros); 1 life-year gained cost euro30,831; and 1 quality-adjusted life-year (QALY) gained cost euro43,698, compared with BSC, in the treatment of mRCC. The expected mean cost in BSC was euro5543. When parameter uncertainty was considered, the probability of sunitinib being the more cost-effective choice of treatment was ~70% at the willingness-to-pay level of euro45,000/QALY gained. CONCLUSIONS Based on the results of this cost-effectiveness analysis, sunitinib is potentially cost-effective as a second-line treatment of mRCC compared with the treatment currently practiced in Finnish hospitals. The ICER (euro/QALY gained) obtained in the present study was less than the value considered suitable for novel oncology treatments.


Acta Oncologica | 2011

Short-course adjuvant trastuzumab therapy in early stage breast cancer in Finland: Cost-effectiveness and value of information analysis based on the 5-year follow-up results of the FinHer Trial

Timo Purmonen; Emma Pänkäläinen; Juha Turunen; Christian Asseburg; Janne Martikainen

Abstract Background. Trastuzumab is a standard treatment of HER2-positive early breast cancer in many countries, and it is usually given as a one year adjuvant treatment. However, its cost-effectiveness has not been assessed in Finland. The Finland Herceptin (FinHer) trial has compared a shorter 9-week treatment protocol against no trastuzumab with promising results. The aim of this study was to assess the potential cost-effectiveness of the 9-week treatment based on the recently published five-year follow-up results of the FinHer trial. Methods. An evaluation model of breast cancer treatment was constructed using fitted survival estimates and a long-term Markov model. The cost-effectiveness of 9-week adjuvant treatment was assessed in a Finnish setting, compared to treatment without trastuzumab. The analysis was performed from a societal perspective, and a 3% discount rate was applied for future costs and outcomes. Value of information analysis was performed to estimate the potential value of further research. Results. According to the probabilistic analysis, the incremental cost-effectiveness ratio was €12 000 per quality adjusted life year (QALY), and €9300 per life year gained (LYG), when comparing adjuvant trastuzumab therapy to standard treatment without trastuzumab. The modelled incremental outcomes for trastuzumab treatment were 0.66 QALY and 0.85 LYG for a lifetime perspective. Value of information analysis showed that additional research on treatment effects would be most valuable for reducing uncertainty in the adoption decision. Conclusions. Adjuvant 9-week trastuzumab is likely to be a cost-effective treatment in the Finnish setting. Results from an ongoing trial comparing adjuvant 9-week treatment with the 12-month treatment will play a key role in addressing the uncertainty related to the treatment effect and potential cost-effectiveness of these two treatment protocols.


International Journal of Technology Assessment in Health Care | 2010

Budget impact analysis of trastuzumab in early breast cancer: A hospital district perspective

Timo Purmonen; Päivi K. Auvinen; Janne Martikainen

OBJECTIVES Adjuvant trastuzumab is widely used in HER2-positive (HER2+) early breast cancer, and despite its cost-effectiveness, it causes substantial costs for health care. The purpose of the study was to develop a tool for estimating the budget impact of new cancer treatments. With this tool, we were able to estimate the budget impact of adjuvant trastuzumab, as well as the probability of staying within a given budget constraint. METHODS The created model-based evaluation tool was used to explore the budget impact of trastuzumab in early breast cancer in a single Finnish hospital district with 250,000 inhabitants. The used model took into account the number of patients, HER2+ prevalence, length and cost of treatment, and the effectiveness of the therapy. Probabilistic sensitivity analysis and alternative case scenarios were performed to ensure the robustness of the results. RESULTS Introduction of adjuvant trastuzumab caused substantial costs for a relatively small hospital district. In base-case analysis the 4-year net budget impact was 1.3 million euro. The trastuzumab acquisition costs were partially offset by the reduction in costs associated with the treatment of cancer recurrence and metastatic disease. CONCLUSIONS Budget impact analyses provide important information about the overall economic impact of new treatments, and thus offer complementary information to cost-effectiveness analyses. Inclusion of treatment outcomes and probabilistic sensitivity analysis provides more realistic estimates of the net budget impact. The length of trastuzumab treatment has a strong effect on the budget impact.


Medical Decision Making | 2012

Sponsorship-related outcome selection bias in published economic studies of triptans: systematic review.

Piia Peura; Janne Martikainen; Timo Purmonen; Juha Turunen

Background. Economic studies funded by the pharmaceutical industry are more likely to report favorable results and recommendations for the sponsor’s product than are studies funded by nonindustry establishments. Purpose. To determine whether clinical outcome data obtained from the same meta-analyses are used differently in various economic studies of oral triptans and whether there is an association between the study sponsorship and the choice of clinical outcome measure. Data Sources. Economic studies of triptans were identified by updating a previously published systematic review. Study Selection. Twelve studies that used the same meta-analyses as the source of clinical outcome data were identified. Data Extraction. Two independent reviewers extracted the essential data from the identified studies. Data Synthesis. In the 12 appraised studies, 9 alternative measures of effectiveness were derived from the same meta-analyses. Eleven studies were industry-related, and in these the selected clinical outcome consistently favored the sponsor’s product. Also the reported results suggested that the sponsor’s product was more cost-effective than the competitors’ products. Limitations. The cost-effectiveness of triptans is dependent on both the definition of clinical effectiveness and the treatment-related costs. Only bias related to the selection of the clinical outcome measure has been taken into account in this review. Conclusions. The results of published economic studies of triptans are conflicting and biased. There is a tendency to select clinical outcome measures that support the sponsor’s product. This leads to concern about the possible poor applicability of these results in decision making.


Acta Oncologica | 2010

Current and predicted cost of metastatic renal cell carcinoma in Finland

Timo Purmonen; Päivi Nuttunen; Riikka Vuorinen; Seppo Pyrhönen; Vesa Kataja; Pirkko Kellokumpu-Lehtinen

Abstract Information on detailed treatment costs and the economic burden of renal cell carcinoma (RCC) is rare. The current study provides treatment costs and outcomes of patients with metastatic RCC (mRCC), as well as estimates of the future burden from the perspective of Finnish health care. These results offer a baseline against which the impact of emerging treatments may be evaluated. Materials and methods. Information on treatment modalities, survival, and the cost of treatment was retrospectively gathered from mRCC patients (n = 83) receiving first-line interferon-alpha (IFN). Predictions of the number of new cases, premature deaths, and productivity losses were made using local epidemiological data, which were projected to the future using population growth forecasts. The future costs of mRCC treatment and the budget impact of sunitinib were estimated through modeling. Results. Patients survived 11.9 months (median; 95% CI 9.2–14.7) after initiation of active IFN treatment, accruing an average total treatment cost of €951. Most of the treatment costs were due to hospitalization and active IFN treatment. The aging of the population leads to nearly a 2% increase in the absolute number of new diagnoses annually, while at the same time it results in declining productivity losses. The estimated five-year population cost of IFN-based treatment was €16M–€26M. Adding sunitinib to the first-line treatment protocol increased this cost by €13M–€41M. Conclusions. Despite the limited number of patients, metastatic renal cell carcinoma places a considerable economic burden on Finnish society. Treatment costs are likely to increase substantially due to the adoption of new and more expensive medications, the aging population, and enhanced survival times.


Expert Review of Pharmacoeconomics & Outcomes Research | 2011

Cost–effectiveness of sunitinib in metastatic renal cell carcinoma

Timo Purmonen

Sunitinib is one of the first targeted treatments for metastatic renal cell carcinoma (mRCC) and is currently considered as the standard of care for most of the mRCC patients in the first-line setting. The introduction of targeted treatments has, in the past few years, led to improvements in disease management and survival of these patients, however, with increasing cost. Cost–effectiveness of sunitinib has been assessed on several occasions and a systematic literature search was conducted to find all published research articles as well as all research abstracts presented in various congresses. This article presents an overview of the currently existing cost–effectiveness studies of sunitinib in mRCC, along with the main results and the utilized methodology. In most of the economic evaluations sunitinib has been deemed to be a cost-effective treatment option compared with other treatments.


International Journal of Technology Assessment in Health Care | 2012

Cost-effectiveness of oral triptans for acute migraine: mixed treatment comparison.

Christian Asseburg; Piia Peura; Tuija Oksanen; Juha Turunen; Timo Purmonen; Janne Martikainen


Archive | 2011

Mitä lääkehoitojen kustannusvaikuttavuus tarkoittaa

Piia Peura; Juha Turunen; Timo Purmonen; Pertti Happonen; Janne Martikainen


Archive | 2011

Triptaanien kustannusvaikuttavuus akuutin migreenikohtauksen hoidossa

Janne Martikainen; Christian Asseburg; Piia Peura; Tuija Oksanen; Juha Turunen; Timo Purmonen; Vesa Kiviniemi


Archive | 2011

Epäsuora vertailu ja verkostometa-analyysit - uudet työkalut lääkkeiden suhteellisen tehon ja vaikuttavuuden arviointiin

Piia Peura; Christian Asseburg; Juha Turunen; Timo Purmonen; Janne Martikainen

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Janne Martikainen

University of Eastern Finland

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Juha Turunen

University of Eastern Finland

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Piia Peura

University of Eastern Finland

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Christian Asseburg

University of Eastern Finland

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Tuija Oksanen

University of Eastern Finland

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Vesa Kataja

University of Eastern Finland

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Ej Soini

University of Eastern Finland

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Emma Pänkäläinen

University of Eastern Finland

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