Segment II studies are primarily used to evaluate which toxicity aspect?

Segment II studies are primarily used to evaluate which toxicity aspect?

• A. Reproductive toxicity in male and female animals
• B. Fetal toxicity
• C. Toxicity in newborn pups
• D. Toxicity in immunocompromised animals

Answer: (B)

Segment II studies target embryo-fetal development, focusing on fetal toxicity and potential teratogenic effects. They expose pregnant animals during organ formation and assess outcomes in the fetus such as viability, growth, and structural abnormalities. The emphasis is on how the developing fetus responds to exposure, rather than on adult reproductive performance or postnatal effects. Maternal toxicity may be monitored, but the primary endpoint is fetal development, which is why fetal toxicity is the best fit.

Segment II studies target embryo-fetal development, focusing on fetal toxicity and potential teratogenic effects. They expose pregnant animals during organ formation and assess outcomes in the fetus such as viability, growth, and structural abnormalities. The emphasis is on how the developing fetus responds to exposure, rather than on adult reproductive performance or postnatal effects. Maternal toxicity may be monitored, but the primary endpoint is fetal development, which is why fetal toxicity is the best fit.