Overview Safety, Tolerability and PK/PD Study in Young Adult Patients With Childhood Onset Growth Hormone Deficiency (GHD). Status: Completed Trial end date: 2009-10-01 Target enrollment: Participant gender: Summary Study to find the optimal dose of Growth Hormone Replacement in young adult patients suffering from childhood onset growth hormone deficiency (GHD). Phase: Phase 2 Details Lead Sponsor: Ambrx, Inc.Collaborator: Merck Serono International SATreatments: Hormones