A Phase 1b2a Study of Safety, Tolerability, and Effectiveness of NS101 in Healthy Adults and Patients with Sudden Sensorineural Hearing Loss

What this Trial Is About

Researchers are evaluating the safety, tolerability, pharmacokinetics PK, pharmacodynamics PD, and efficacy of NS101, an anti-FAM19A5 antibody, in both healthy volunteers and patients with sudden sensorineural hearing loss SSNHL. This exploratory Phase 1b2a study aims to determine if multiple doses of NS101 are safe and tolerable and whether the treatment can help restore hearing in SSNHL patients who have not sufficiently improved after standard steroid therapy. The study includes a placebo control and uses a double-blind design to ensure unbiased results. Participants receive NS101 or placebo via intravenous infusion at doses of 15 mgkg or 30 mgkg administered every two weeks. Healthy volunteers receive treatment for 6 weeks, whereas SSNHL patients receive treatment for 12 weeks. The study has four groups two dose levels for healthy volunteers with active and placebo arms, and two groups for SSNHL patients receiving either NS101 or placebo. Treatments are given systematically, and participants are randomly assigned to the groups. Throughout the study, participants undergo frequent safety assessments to monitor changes from baseline at multiple time points, including days and weeks after treatment begins. Pharmacokinetic and immunological tests are also performed to track how the drug behaves in the body and its effects. Researchers measure hearing improvement and monitor tolerability closely. The study is expected to continue until January 2027, with participants involved in regular visits and evaluations during and after treatment.

A Phase 1b/2a, Study Evaluating the Safety, PK/PD and Efficacy of NS101 in Healthy Volunteers and SSNHL Patients