Target carcinogenicity assessment

The recently introduced ICH S1B addendum1 (integrated with the original S1B guideline on 4th August 2022) includes a new weight of evidence (WoE) assessment to determine whether performing a 2-year rat study would add value to the assessment of human carcinogenic risk. The guideline describes six WoE factors – [1] target biology, [2] secondary pharmacology, [3] …

Assessing carcinogenicity risk of nitrosamines and supporting the ICH S1B guideline

At this year’s SOT in Nashville (March 19-23, 2023), Instem will be organizing two workshops related to cancer assessments.1 In the first workshop, to be held on Tuesday, March 21, 4:30 PM – 5:30 PM (CT) in Room 101B, we will discuss carcinogenicity assessments aligned with the ICH S1B guideline2, specifically focusing on the weight …

A protocol to support the weight-of-evidence for human carcinogenicity assessment of pharmaceuticals

This week we are pleased to welcome Dr. Arianna Bassan as a guest contributor to the blog. The recently published draft addendum of the ICH S1B guideline1 introduces a weight-of-evidence (WoE) approach to assess human carcinogenic potential of small molecule pharmaceuticals and determine whether a 2-year rat carcinogenicity study would add value. Application of this …