Customer situation (Healthy Volunteers):
• Empirical PK/PD modeling used to enable Phase 1 (not systems pharmacology)
• Competitor molecule still ahead in the clinic
• Dose administration and frequency still major Go/No-Go criteria
• High non-linear PK (IV and SC dosing)
• High PK variability with SC dosing
• Can the non-linear PK and SC PK variability be explained?
• Will it be possible to achieve >90% target inhibition in patients?
• Should program be discontinued? Refocused on another disease indication?
• Model results used to amend Ph1 protocol, to prepare Medicine and Marketing for counterintuitive Ph1 results and to obtain regulatory approval to change Ph2 trial design
• Customer’s best-in-class molecule now positioned to be first-in-class as well (competitor postponed clinical trials)
Related Case Studies
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When selecting a clinical candidate, it is a competitive advantage to have accurate, quantitative predictions that help answer strategic questions such as whether a program should be terminated, if a new lead generation campaign is needed, or what further assays need to be developed. This case studies outlines an example where systems pharmacology modeling helped save a clinical candidate from being terminated and instead accelerated it into the clinical where it is currently slated to be best-in-class.
In early drug development, quantitative systems pharmacology (QSP) modeling can provide decision support for many critical decisions such as what experiments to proceed with and what parameters have the most impact. It can also lend insight into a drug candidate's competitive landscape. This case study outlines an example where QSP modeling helped assess why the dosing regimens of the two anti-PD-1s are roughly similar and predicted optimal drug parameters for bispecific formats versus fixed dose combination.
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With an ever increasing focus on antibody drug conjugates (ADC), computational models are needed to better understand the complexity of the various design parameters and objectives of ADCs. The following case study is a computational exploration of mechanistic determinants of ADC pharmacokinetics using quantitative systems pharmacology (QSP) modeling strategies.