Development of xaliproden for these two indications was discontinued in 2007 following analysis of Phase III data. While the drug did show an effect on hippocampal volume (suggesting perhaps a slowing of cell loss), there was insufficient evidence for efficacy in counteracting Alzheimer's related cognitive decline. Similarly while there were some indicators of efficacy in ALS, including a small but clinically noteworthy effect on some functional parameters, the overall benefit did not reach statistical significance when results across several Phase III trials were averaged. Xaliproden remains under investigation for treatment of chemotherapy-induced peripheral neuropathy.[6][7]
^Meininger V, Bensimon G, Bradley WR, Brooks B, Douillet P, Eisen AA, et al. (June 2004). "Efficacy and safety of xaliproden in amyotrophic lateral sclerosis: results of two phase III trials". Amyotrophic Lateral Sclerosis and Other Motor Neuron Disorders. 5 (2): 107–117. doi:10.1080/14660820410019602. PMID15204012. S2CID2736180.
^Lemaire L, Fournier J, Ponthus C, Le Fur Y, Confort-Gouny S, Vion-Dury J, et al. (June 2002). "Magnetic resonance imaging of the neuroprotective effect of xaliproden in rats". Investigative Radiology. 37 (6): 321–327. doi:10.1097/00004424-200206000-00003. PMID12021588. S2CID32239136.