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Featured researches published by Esther Pronker.


PLOS ONE | 2013

Risk in Vaccine Research and Development Quantified

Esther Pronker; Tamar Weenen; Harry Commandeur; Eric Claassen; A.D.M.E. Osterhaus

To date, vaccination is the most cost-effective strategy to combat infectious diseases. Recently, a productivity gap affects the pharmaceutical industry. The productivity gap describes the situation whereby the invested resources within an industry do not match the expected product turn-over. While risk profiles (combining research and development timelines and transition rates) have been published for new chemical entities (NCE), little is documented on vaccine development. The objective is to calculate risk profiles for vaccines targeting human infectious diseases. A database was actively compiled to include all vaccine projects in development from 1998 to 2009 in the pre-clinical development phase, clinical trials phase I, II and III up to Market Registration. The average vaccine, taken from the preclinical phase, requires a development timeline of 10.71 years and has a market entry probability of 6%. Stratification by disease area reveals pandemic influenza vaccine targets as lucrative. Furthermore, vaccines targeting acute infectious diseases and prophylactic vaccines have shown to have a lower risk profile when compared to vaccines targeting chronic infections and therapeutic applications. In conclusion; these statistics apply to vaccines targeting human infectious diseases. Vaccines targeting cancer, allergy and autoimmune diseases require further analysis. Additionally, this paper does not address orphan vaccines targeting unmet medical needs, whether projects are in-licensed or self-originated and firm size and experience. Therefore, it remains to be investigated how these - and other - variables influence the vaccine risk profile. Although we find huge differences between the risk profiles for vaccine and NCE; vaccines outperform NCE when it comes to development timelines.


Vaccine | 2011

The gold industry standard for risk and cost of drug and vaccine development revisited

Esther Pronker; Tamar Weenen; Harry Commandeur; A.D.M.E. Osterhaus; H.J.H.M. Claassen

Gold dimensions of pharmaceutical drug development indicate that it takes on average 11.9 years, with an investment around US


PLOS ONE | 2013

Food-Pharma Convergence in Medical Nutrition - Best of Both Worlds?

Tamar Weenen; Bahar Ramezanpour; Esther Pronker; Harry Commandeur; Eric Claassen

0.8 Billion, to launch one product on the market. Furthermore, approximately 22% of the drug candidates successfully complete clinical testing. These universally acknowledged proportions largely originate from one single, much cited publication; Dimasi et al. [5]. However an additional six articles describing new chemical entities (NCE) development were identified, which contain little, if any, information on vaccines. Published cumulative success rates range from 7% to 78% and investments calculations span US


Vaccine | 2015

Market implementation of the MVA platform for pre-pandemic and pandemic influenza vaccines: A quantitative key opinion leader analysis.

Bahar Ramezanpour; Esther Pronker; Joost H. C. M. Kreijtz; Albert D. M. E. Osterhaus; Eric Claassen

0.8 to 1.7 Billion. Obviously this disserves further clarification?


Clinical Nutrition | 2014

Patient needs and research priorities in the enteral nutrition market – A quantitative prioritization analysis

Tamar Weenen; Anne Jentink; Esther Pronker; Harry Commandeur; Eric Claassen; Yves Boirie; Pierre Singer

At present, industries within the health and life science sector are moving towards one another resulting in new industries such as the medical nutrition industry. Medical nutrition products are specific nutritional compositions for intervention in disease progression and symptom alleviation. Industry convergence, described as the blurring of boundaries between industries, plays a crucial role in the shaping of new markets and industries. Assuming that the medical nutrition industry has emerged from the convergence between the food and pharma industries, it is crucial to research how and which distinct industry domains have contributed to establish this relatively new industry. The first two stages of industry convergence (knowledge diffusion and consolidation) are measured by means of patent analysis. First, the extent of knowledge diffusion within the medical nutrition industry is graphed in a patent citation interrelations network. Subsequently the consolidation based on technological convergence is determined by means of patent co-classification. Furthermore, the medical nutrition core domain and technology interrelations are measured by means of a cross impact analysis. This study proves that the medical nutrition industry is a result of food and pharma convergence. It is therefore crucial for medical nutrition companies to effectively monitor technological developments within as well as across industry boundaries. This study further reveals that although the medical nutrition industry’s core technology domain is food, technological development is mainly driven by pharmaceutical/pharmacological technologies Additionally, the results indicate that the industry has surpassed the knowledge diffusion stage of convergence, and is currently in the consolidation phase of industry convergence. Nevertheless, while the medical nutrition can be classified as an industry in an advanced phase of convergence, one cannot predict that the pharma and food industry segments will completely converge or whether the medical industry will become an individual successful industry.


Vaccine | 2012

Development of new generation influenza vaccines: Recipes for success?☆

Esther Pronker; Eric Claassen; Albert D. M. E. Osterhaus

A quantitative method is presented to rank strengths, weaknesses, opportunities, and threats (SWOT) of modified vaccinia virus Ankara (MVA) as a platform for pre-pandemic and pandemic influenza vaccines. Analytic hierarchy process (AHP) was applied to achieve pairwise comparisons among SWOT factors in order to prioritize them. Key opinion leaders (KOLs) in the influenza vaccine field were interviewed to collect a unique dataset to evaluate the market potential of this platform. The purpose of this study, to evaluate commercial potential of the MVA platform for the development of novel generation pandemic influenza vaccines, is accomplished by using a SWOT and AHP combined analytic method. Application of the SWOT–AHP model indicates that its strengths are considered more important by KOLs than its weaknesses, opportunities, and threats. Particularly, the inherent immunogenicity capability of MVA without the requirement of an adjuvant is the most important factor to increase commercial attractiveness of this platform. Concerns regarding vector vaccines and anti-vector immunity are considered its most important weakness, which might lower public health value of this platform. Furthermore, evaluation of the results of this study emphasizes equally important role that threats and opportunities of this platform play. This study further highlights unmet needs in the influenza vaccine market, which could be addressed by the implementation of the MVA platform. Broad use of MVA in clinical trials shows great promise for this vector as vaccine platform for pre-pandemic and pandemic influenza and threats by other respiratory viruses. Moreover, from the results of the clinical trials seem that MVA is particularly attractive for development of vaccines against pathogens for which no, or only insufficiently effective vaccines, are available.


Advances in Pharmaceutical Sciences, Pharma Nutrition | 2014

Bridging a pharma-like innovation gap in medical nutrition

Tamar Weenen; Kenneth Fernald; Esther Pronker; Harry Commandeur; Eric Claassen

BACKGROUND & AIMS A quantitative systematic identification and prioritization of unmet needs and research opportunities in relation to enteral nutrition was conducted by means of a tailor-made health research prioritization process. METHODS The research objectives were reached by conducting qualitative interviews followed by quantitative questionnaires targeting enteral nutrition key opinion leaders (KOLs). (1) Define disease areas that deserve more research attention; (2) Rank importance of product characteristics of tube feeding (TF) and oral nutritional supplements (ONS); (3) Assess involvement of KOLs in enteral nutrition R&D process. KOLs ranked three product characteristics and three disease areas that deserve additional research attention. From these, overall priority scores were calculated by multiplying ranks for both product characteristics and disease areas. RESULTS 17 qualitative interviews were conducted and 77 questionnaires (response rate 35%) were completed and returned. (1) Disease areas in ONS and TF with highest priorities are: ONS: general malnutrition & geriatrics, TF: intensive care. (2) TF product characteristics with highest priorities are: composition and clinical evidence from a KOL perspective; tolerance and ease of use from a patient perspective. ONS product characteristics with highest priorities are: composition, clinical evidence and taste from a KOL perspective; taste from a patient perspective. We find a high discrepancy between product characteristic prioritization from a KOL and patient perspective. (3) Although 62% of all KOLs give advice to enteral nutrition companies on patient needs, they under-influence the setting of research priorities by enteral nutrition companies. CONCLUSIONS This study provides a systematic approach to achieve research prioritization in enteral nutrition. In addition to providing new directions for enteral nutrition research and development, this study highlights the relevance of involving KOLs in the identification of research priorities as they have the ability to provide a balanced view of the unmet patient needs.


PharmaNutrition | 2013

Barriers to innovation in the medical nutrition industry : A quantitative key opinion leader analysis

Tamar Weenen; Esther Pronker; Harry Commandeur; Eric Claassen

As infectious diseases cause approximately 25% of the annual global mortality, vaccines are found to be a time proven and promising response to infectious disease need. However, like for pharmaceutical small molecules, vaccine development is lengthy, risky and resource demanding. Faced with an attrition rate estimated around 80%, key opinion leaders were interviewed with the question: is there a recipe for success?


PharmaNutrition | 2013

Patenting in the European medical nutrition industry : Trends, opportunities and strategies

Tamar Weenen; Esther Pronker; Harry Commandeur; Eric Claassen

This chapter focuses on the current and possible future development scenarios for the medical nutrition industry. It starts off by exploring the definitions and characteristics of the pharmanutrition industries in the European health and life science sector. By taking conventional foods at one end of the spectrum, and pharmaceutical products at the other, the pharmanutrition industry can be split further into two categories falling within this spectrum: functional foods and medical nutrition. Section two exemplifies the developmental trends of the medical nutrition industry. Various industry life cycle scenarios are defined in order to forecast the direction in which this pharmanutrition industry could mature. Concepts such as the innovation cliff and jumping the S-curve are described, and strategies to overcome common bottlenecks are proposed. The last section describes patenting behaviour in the medical nutrition industry, offering a patent decision framework for intellectual property protection strategies. The chapter rounds off with a general discussion as to the successful future development of the medical nutrition industry.


Technological Forecasting and Social Change | 2015

Scratching the surface: Exploratory analysis of key opinion leaders on rate limiting factors in novel adjuvanted-vaccine development

Esther Pronker; Tamar Weenen; Harry Commandeur; Eric Claassen; A.D.M.E. Osterhaus

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Tamar Weenen

Erasmus University Rotterdam

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Harry Commandeur

Erasmus University Rotterdam

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A.D.M.E. Osterhaus

Erasmus University Rotterdam

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Anne Jentink

VU University Amsterdam

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