2025年にNew England Journal of Medicineに発表されたSURMOUNT-5試験では、751名の参加者を対象にチルゼパチドとセマグルチドを直接比較しました。72週時点でチルゼパチドは20.2%、セマグルチドは13.7%の体重減少を達成し、6.5パーセントポイントの差がありました。ウエスト周囲径の減少もチルゼパチドが18.4 cmとセマグルチドの13.0 cmを上回りました。
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