Ved systemiske plasmaeksponeringer, der lå væsentlig under (kaniner) eller ikke meget over (rotter) den forventede humane eksponering ved terapeutisk dosering, sås imidlertid en række mindre ændringer, herunder forlænget thymus og mindre skeletafvigelser, hvilket antyder forsinket udvikling.
However, at systemic plasma exposures significantly below (rabbits) or not significantly higher (rat) than the expected human exposures during therapeutic dosing, a number of minor changes, including thymic elongation and minor skeletal variations were seen, indicating developmental delay.