Efficacy of RGn600 in Patients With Mild-to-moderate Alzheimer's Disease

Inclusion Criteria: * Male or female aged 55 to 85 years old (both included) * Diagnosed with AD according to McKhann et al. international criteria dated 2011 * With mild-to-moderate AD, i.e., 10 ≤ MMSE score ≤ 26 * With blood analyses results (for: thyroid-stimulating hormone, vitamin B12, folate, complete blood count including platelets, electrolytes including calcium, creatinine, clearance, alanine aminotransferase, aspartate aminotransferase, bilirubin, coagulation, C-reactive protein) dated less than 1 year ago in line with AD diagnosis, as deemed by the investigator * With brain Computed Tomography (CT) or/and Magnetic Resonance Imaging (MRI) scan dated less than 1 year ago in line with AD diagnosis, as deemed by the investigator * In case of treatment with AD symptomatic treatments (memantine and acetylcholinesterase inhibitors) and psychotropic treatments (anxiolytics, antidepressants and neuroleptics): with a stable dose of such treatments 4 weeks before inclusion * Who has a caregiver who is sufficiently and regularly present and can help the patient throughout the investigation, as deemed by the investigator * Affiliated to French social security * Who provided, with his/her caregiver, a dated and signed informed consent form. Exclusion Criteria: * Patient protected by a French legal measure ("sauvegarde de justice", "tutelle" or "curatelle") * Patient deprived of liberty or hospitalized without consent * Non-menopausal woman * Patient taking a disease-modifying…