Genaera Corporation announced positive results for its mucoregulator compound, Lomucin, in its first clinical study in asthma. The mucoregulator program is Genaera's second product development program based on its genomics discoveries.

The open-label, single-center, randomized study evaluated 63 patients with chronic asthma, to assess the gastrointestinal and respiratory tolerance of Lomucin oral tablets in patients with chronic asthma, as well as measure the preliminary effects on symptoms and pulmonary functions. The trial treated 42 patients with Lomucin and 21 with ibuprofen. As the primary outcome of the trial, Lomucin was well tolerated in asthma patients, with a trend of improved gastrointestinal tolerance compared to ibuprofen, and no serious adverse events. There were no significant effects on asthma symptoms compared to ibuprofen. A positive efficacy trend was observed among patients with moderate asthma, indicated by increased residual volume at baseline (indicative of gas trapping in the lung). In these patients (half of patients enrolled in the study) Lomucin significantly decreased residual volume by 28%, compared to 13% with ibuprofen. This efficacy trend may be due to Lomucin mucoregulator activity leading to decreased mucus production and the opening of small airways, allowing more air to be exhaled from the lung.

Based on the role of the hCLCA1 chloride channel in respiratory diseases, such as cystic fibrosis, the Company has developed Lomucin. Lomucin is intended to block the hCLCA1-dependent mucus overproduction present in respiratory and sinus disorders, and thereby provide a new strategy for opening the airways and easing breathing in patients with these diseases.

Lomucin is a known compound, talniflumate, which was discovered, developed and marketed as an anti-inflammatory drug by Laboratorios Bago of Buenos Aires, Argentina, the leading independent pharmaceutical company in South America. Talniflumate has been approved and marketed for almost 20 years in Argentina, and selected other countries excluding the United States, Europe, and Japan. The effects of talniflumate in blocking hCLCA1 and mucus overproduction were discovered by Genaera scientists who have submitted patent applications protecting the novel uses of talniflumate as a mucoregulator. Genaera has an exclusive agreement with Laboratorios Bago to develop and commercialize Lomucin as a new chemical entity and mucoregulator drug in all major pharmaceutical markets including the United States, Europe, and Japan.

There is an extensive unmet medical need for a therapy that can prevent abnormal mucus production. Chronic sinusitis is one of the most common reasons for physician visits in the United States, with about 35 million cases per year. It is thought that many of the symptoms of chronic sinusitis result from excess mucus production. According to the National Institute of Allergies and Infectious Disease (NIAID) and the American Lung Association, there are more than 65 million patients suffering from diseases where mucus overproduction may be hCLCA1 mediated, including 15 million patients with chronic bronchitis and other forms of chronic obstructive pulmonary disease (COPD), 17 million asthmatics, and 35 million respiratory allergy sufferers. Mucus overproduction and small airway plugging is one of the hallmarks of asthma and excess mucus production is also associated with COPD, chronic bronchitis, and cystic fibrosis.