Pfizer announced in October 2007 that it would stop marketing CP-464,005. At that time recruitment for study, A2171105 was placed on hold. Nektar, the company from which Pfizer licensed CP-464,005, announced on April 9, 2008 that it had stopped its search for a new marketing partner. As a result, study A2171105 was terminated on April 10, 2008. Neither safety nor efficacy reasons were the cause of the study termination.
