SAR447971 First-in-human Study

SAD20411 is a single-center, first-in-human, double-blind, randomized, placebo-controlled, sequential single ascending dose study in healthy male and/or female participants with a pilot food effect investigation. MAD20412 is a single-center, double-blind, randomized, placebo-controlled, sequential multiple ascending dose study in healthy male and/or female participants. MAD24339 is an open-label, sequential multiple ascending dose study in hidradenitis suppurativa (HS) male and/or female participants. Number of participants - The total expected number of healthy participants is approximately 94 and the total number of HS participants is expected to be approximately 20. * SAD20411 will enroll up to 46 participants * MAD20412 will enroll up to 48 participants * MAD24339 will enroll up to 20 participants Duration of study - The anticipated study duration per participant is up to approximately 10 weeks in SAD20411 and MAD20412, and up to approximately 12 weeks in MAD24339.