NKTR-118 is an oral drug that combines Nektar's advanced small molecule PEGylation technology platform with naloxol, a derivative of the opioid-antagonist drug, naloxone. In preclinical studies, Nektar's PEGylation technology has been shown to prevent oral NKTR-118 from crossing the blood-brain barrier, an important potential advance for this and possibly many other small molecule therapies.
The antagonist NKTR-118 targets mu-opioid receptors within the enteric nervous system, which mediate OBD, a symptom complex resulting from opioid use that encompasses constipation, bloating, abdominal cramping, and gastroesophageal reflux. Constipation is the hallmark of this syndrome, and is generally its most prominent component. NKTR-118 is currently in a second Phase 1 trial to evaluate the safety and tolerability of repeated dose administration.
According to IMS Health, more than 200 million prescriptions were written for opioids in 2006 in the United States, alone. Many studies indicate that a high percentage of patients receiving opioids are likely to experience significant constipation and other symptoms of OBD. Currently, there are no specific drugs approved that are indicated to treat OBD or OIC. Stool softeners or laxatives may be ineffective for many patients with OIC and they are often associated with side effects like diarrhea and cramping.
Data Presentations for NKTR-118
The NKTR-118 poster presentations from this week's American Academy of Pain Management's Annual Clinical Meeting in Las Vegas, Nevada from September 27-30, 2007 can be found on Nektar's website at http://www.nektar.com/wt/page/nktr118_media:
Poster #27: "Clinical Investigation
|SOURCE Nektar Therapeutics|
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