The purpose of this research study is to test the safety and local tolerance of repeated treatment with AM-101.

This open-label extension study is assessing the safety and local tolerance of repeated treatment with AM-101 in subjects previously treated in the scope of the TACTT3 study.

Inclusion Criteria:

• Completion of TACTT3 study;
• Negative pregnancy test (woman of childbearing potential);
• Willing and able to attend the study visits.

Other protocol-defined inclusion criteria may apply.

Exclusion Criteria:

• Adverse event leading to treatment discontinuation in TACTT3;
• Meniere's Disease, endolymphatic hydrops, acoustic neuroma, severe or fluctuating hearing loss, otitis media, otitis externa, abnormality of tympanic membrane;
• Ongoing drug-based therapy for otitis media or otitis externa;
• Drug-based therapy known as potentially tinnitus-inducing;
• Other treatment of tinnitus;
• Drug abuse or alcoholism;
• Subjects with psychiatric diseases requiring drug treatment;
• Use of antidepressant or anti-anxiety medication;
• Any clinically relevant disorder or abnormality in physical examination;
• Women who are breast-feeding, pregnant or who are planning to become pregnant during the study;
• Women of childbearing potential who are unwilling or unable to practice contraception.

Other protocol-defined exclusion criteria may apply.