Inovio announced the U.S. Food and Drug Administration (FDA) has accepted its Investigational New Drug (IND) application to evaluate its DNA medicine INO-3107 in a Phase 1/2 trial for treatment of Recurrent Respiratory Papillomatosis or RRP. RRP is a rare disease caused by the human papillomavirus (HPV) types 6 and 11 infections, a condition that causes noncancerous tumor growths leading to life-threatening airway obstructions, and occasionally can progress to cancer.
The open-label, multicenter Phase 1/2 trial will enroll approximately 63 subjects in the U.S. and will evaluate the efficacy, safety, tolerability, and immunogenicity of INO-3107 in subjects with HPV 6 and/or 11-associated RRP who have required at least two surgical interventions per year for the past three years for the removal of associated papilloma(s). For this study, adult subjects will first undergo surgical removal of their papilloma(s) and then receive four doses of INO-3107, one every three weeks. The primary efficacy endpoint will be a doubling or more in the time between surgical interventions following the first dose of INO-3107 relative to the frequency prior to study therapy. Upon obtaining sufficient safety and potential efficacy data in adults, Inovio plans to expand the trial to include pediatric patients as well as a potential booster regimen.
About Recurrent Respiratory Papillomatosis (RRP)
Recurrent Respiratory Papillomatosis (RRP) is a rare disease (estimated at 15,000 active cases in the U.S.) that is characterized by the growth of tumors in the respiratory tract caused by the human papillomavirus. Although benign, papillomas can cause severe, even life-threatening airway obstruction and respiratory complications. A distinguishing aspect of this disease is the tendency for the papilloma to recur after surgical procedures to remove them. Left untreated, if RRP develops in the lungs, affected individuals can potentially experience recurrent pneumonia, chronic lung disease (bronchiectasis) and, ultimately, progressive pulmonary failure. In extremely rare cases (less than 1%), papillomas can become cancerous (malignant transformation) developing into squamous cell carcinoma. Additional symptoms of RRP can include hoarse voice, difficulty in sleeping and swallowing, and chronic coughing. RRP symptoms are usually more severe in children than in adults. In children, the disorder is most often diagnosed at or around the age of four years. In adults, the disorder occurs most often in the third or fourth decade.
Inovio has 15 DNA medicine clinical programs currently in development focused on HPV-associated diseases, cancer, and infectious diseases. DNA medicines are medicines composed of optimized DNA plasmids, which are small circles of double-stranded DNA that are synthesized or reorganized by a computer sequencing technology and designed to produce a specific immune response in the body.
Inovio’s DNA medicines deliver optimized plasmids directly into cells intramuscularly or intradermally using Inovio’s proprietary hand-held smart device called CELLECTRA®. CELLECTRA uses a brief electrical pulse to open small pores in the cell reversibly to allow the plasmids to enter. Once inside the cell, the plasmids begin replicating, thereby strengthening the body’s own natural response mechanisms. Administration with the CELLECTRA device ensures that the DNA medicine is delivered directly into the body’s cells, where it can go to work immediately mounting an immune response. Inovio’s DNA medicines are not interfering with or changing in any way an individual’s own DNA, which is the case with gene therapy or gene editing.
With more than 2,000 patients receiving Inovio investigational DNA medicines in more than 6,000 applications across a range of clinical trials, Inovio’s DNA medicines have consistently activated safe, robust, and fully functional T cell and antibody responses against targeted pathogens and cancers.