Publications by authors named "P H Theunissen"

Regulatory guidance for global drug development relies on animal studies to evaluate safety risks for humans, including risk of reproductive toxicity. Weight-of-evidence approaches (WoE) are increasingly becoming acceptable to evaluate risk. A WoE for developmental risk of monoclonal antibodies (mAbs) was evaluated for its ability to retrospectively characterize risk and to determine the need for further in vivo testing based on the remaining uncertainty.

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Embryofetal development (EFD) studies are performed to characterize risk of drugs in pregnant women and on embryofetal development. In line with the ICH S5(R3) guideline, these studies are generally conducted in one rodent and one non-rodent species, commonly rats and rabbits. However, the added value of conducting EFD studies in two species to risk assessment is debatable.

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Article Synopsis
  • Researchers have found that microproteins from noncanonical open reading frames (ncORFs) can produce tumor-specific antigens during cancer progression, potentially triggering immune responses.
  • By analyzing RNA sequencing and other data from 117 liver cancer (hepatocellular carcinoma) tumors, they discovered that about 40% of these antigens likely come from ncORFs, including some that can initiate an immune response in humanized mice.
  • The study also identified 33 long noncoding RNAs that express shared cancer antigens found in over 10% of the samples, suggesting new possibilities for developing cancer vaccines.
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Crowdfunding is a growing source of finance for entrepreneurs. In this paper, we investigate the existence of a gender effect in the time needed to obtain a business loan through crowdfunding. Using data from three Dutch crowdfunding platforms, survival analysis of the time to completion for 934 business loan campaigns shows that female entrepreneurs have a 20% shorter campaign completion time compared to male entrepreneurs, whereas couples do not differ from males.

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Advanced therapy medicinal products (ATMPs) are among the most complex pharmaceuticals with high human specificity. Species differences severely limit the clinical relevance of in vivo data. We conducted interviews with stakeholders involved in ATMP development about their perspective on the use of in vivo studies, the perceived hurdles and associated potential solutions regarding non-clinical development of ATMPs.

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