Overview Healthy Volunteer Solid Oral Dose and Multiple Ascending Dose Evaluation of CTP-656 Status: Completed Trial end date: 2016-04-01 Target enrollment: Participant gender: Summary Two-part study to assess CTP-656 dosed as a solid oral dosage form versus Kalydeco and multiple-ascending doses of CTP-656 dosed for 7 days. Phase: Phase 1 Details Lead Sponsor: Concert PharmaceuticalsTreatments: Ivacaftor