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Article type: Systematic Review
Authors: Terao, Itsukia; * | Kodama, Wakakob
Affiliations: [a] Department of Psychiatry, Ikokoro Clinic Nihonbashi, Tokyo, Japan | [b] Department of Psychiatry, Negishi Hospital, Tokyo, Japan
Correspondence: [*] Correspondence to: Itsuki Terao, MD, PhD, Department of Psychiatry, Ikokoro Clinic Nihonbashi, 2-6-6 Nihobashihoridomecho, Chuo-ku, Tokyo 103-0012, Japan. Tel.: +81 3 3669 0070; Fax: +81 3 3669 0071; E-mail: terao0125@gmail.com; ORCID: 0000-0003-0662-5637
Abstract: Background: The Food and Drug Administration (FDA) has approved lecanemab and aducanumab and is reviewing donanemab, but they have questionable efficacy, serious side effects and are costly, whereas melatonin administration and aerobic exercise for a short time may overcome these problems. Objective: We aim to compare the efficacy on cognitive function, tolerability and acceptability of melatonin administration and aerobic exercise for a short time with donanemab, lecanemab, and aducanumab in people with mild AD and MCI. Methods: We systematically reviewed relevant randomized placebo-controlled trials (RCTs) in PubMed, the Cochrane Library, CINHAL, and ClinicalTrials.gov and performed network meta-analyses. Results: The analysis included 10 randomized placebo-controlled trials with 4,599 patients. Although melatonin and aerobic exercise for a short time were significantly more effective than donanemab, lecanemab, aducanumab and placebo in the primary analysis, there was significant heterogeneity. In the sensitivity analysis excluding exercise, melatonin was significantly more effective than donanemab, lecanemab, aducanumab and placebo, with no significant heterogeneity. Aerobic exercise for a short time was significantly less acceptable than donanemab, aducanumab and placebo. Donanemab, lecanemab, and aducanumab were significantly less tolerable than placebo and donanemab and lecanemab were significantly less acceptable than placebo. CONCLUSIONS:Melatonin may be a better potential disease-modifying treatment for cognitive decline in mild AD and MCI. Aerobic exercise for a short time might also be better than donanemab, lecanemab and aducanumab if continued, as it is well tolerated and more effective, although less valid due to heterogeneity. Another limitation is the small number of participants.
Keywords: Aducanumab, Alzheimer’s disease, donanemab, exercise, melatonin, meta-analysis
DOI: 10.3233/JAD-230911
Journal: Journal of Alzheimer's Disease, vol. 98, no. 3, pp. 825-835, 2024
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