Phase 3 Study of KP-100LI in Subjects With Vocal Fold Scar

The purpose of this study is to confirm the efficacy and safety of KP-100LI, a intracordal formulation containing recombinant human dHGF as the active pharmaceutical ingredient, for voice function improvement therapy in patients with vocal fold scar (including vocal fold sulcus).

Inclusion Criteria: 1. 18 years to 75 years 2. Presence of bilateral vocal fold scar or sulcus diagnosed 3. No other vocal lesion or vocal movement disorder 4. Voice Handicap Index-10 (VHI-10) score of 11 or higher 5. No laryngoplasty, collagen or lipid infusion to vocal cord, removal scar, fascial graft, or administration of steroid or hyaluronic acid to vocal cord Exclusion Criteria: 1. No movement disorders of the vocal fold including paralysis 2. Airway disease caused by burn 3. History of malignant tumor 4. History of allergy to local anesthesia agent 5. With impaired coagulation-fibrinolysis, or taking anticoagulant or antiplatelet drugs 6. Serious concomitant disease 7. Pregnant (including suspected), nursing, wishing to become pregnant, or unable to prevent conception during the trial period using contraceptive methods