“Toxicity of SAM was evaluated in Sprague-Dawley rats and Beagle dogs up to 6 months and 9 months in duration, respectively.”
✓ VerifiedFDA multi-discipline review, p. 446Source ↗
Why that species
Dog pharmacokinetics of samidorphan closer to human than rat, including no sex difference in metabolism
“The overall pharmacokinetic profile of SAM in dogs is more closely related to humans than rats, including lack of sex difference in metabolism.”
✓ VerifiedFDA multi-discipline review, p. 319Source ↗
Surrogate molecule
No surrogate; the clinical compound samidorphan was tested
“Toxicity of SAM was evaluated in Sprague-Dawley rats and Beagle dogs up to 6 months and 9 months in duration, respectively.”
✓ VerifiedFDA multi-discipline review, p. 446Source ↗
Species: general tox
Rat (6-month) and dog (9-month), samidorphan
“Toxicity of orally administered SAM was evaluated in rats and dogs up to 6-months and 9-months in duration, respectively.”
✓ VerifiedFDA multi-discipline review, p. 320Source ↗
Species: DART
Rabbit (EFD, samidorphan) and rat (EFD, olanzapine/samidorphan combination)
“SAM administration to pregnant rabbits during the period of organogenesis resulted in maternal toxicity, but no effects on embryofetal development at doses up to approximately 143 times MRHD based on AUC. The administration of the combination of SAM and OLZ to pregnant rats during the period of organogenesis resulted in similar effects”
✓ VerifiedFDA multi-discipline review, p. 321Source ↗
Species: carcinogenicity
Rat (up to 95 weeks) and rasH2 transgenic mouse (6-month), samidorphan
“SAM is also non-carcinogenic as it did not induce tumors in male and female rats administered SAM for up to 95 weeks at exposures which are approximately 32 and 237 times the MRHD based on AUC, respectively and did not induce tumors in rasH2 transgenic mice administered SAM for 6-months.”
✓ VerifiedFDA multi-discipline review, p. 320Source ↗
Surrogate used in
No surrogate used; samidorphan tested directly in rats and dogs
“Toxicity of SAM was evaluated in Sprague-Dawley rats and Beagle dogs up to 6 months and 9 months in duration, respectively.”
✓ VerifiedFDA multi-discipline review, p. 446Source ↗