ShorT and OPtimal Duration of Dual AntiPlatelet Therapy-2 Study

Summary

The purpose of this study is to evaluate the safety of reducing dual antiplatelet therapy (DAPT) duration to 1 month after implantation of the everolimus-eluting cobalt-chromium stent (CoCr-EES).

Timeline

Start

2015-12

Primary completion

2018-12-08

Completion

2023-12-31

Publications

• Watanabe H, Morimoto T, Natsuaki M, Yamamoto K, Obayashi Y, Nishikawa R, Kimura T, Imada K, Suwa S, Isawa T, Ando K, Fujita T, Kadota K, Tokuyama H, Sakamoto H, Suzuki H, Wakabayashi K, Ono K, Hayashi F, Tanabe K, Akao M, Onishi Y, Yoshida R, Kusuyama T, Tamura T, Onoue Y, Yagi M, Kaitani K, Kimura T; STOPDAPT-2 ACS investigators. Clopidogrel Versus Aspirin Monotherapy Beyond 1 Year After PCI: The Final 5-Year Results of the STOPDAPT-2 ACS and STOPDAPT-2 Total Cohort. Circ Cardiovasc Interv. 2026 Jun;19(6):e016280. doi: 10.1161/CIRCINTERVENTIONS.125.016280. Epub 2026 Mar 18.
• Yamamoto K, Watanabe H, Morimoto T, Obayashi Y, Natsuaki M, Yamaji K, Domei T, Ogita M, Ohya M, Tatsushima S, Suzuki H, Tada T, Ishii M, Nikaido A, Watanabe N, Fujii S, Mori H, Nishikura T, Suematsu N, Hayashi F, Komiyama K, Shigematsu T, Isawa T, Suwa S, Ando K, Kimura T; STOPDAPT-2 and STOPDAPT-2 ACS Investigators. Clopidogrel Monotherapy After 1-Month Dual Antiplatelet Therapy in Patients With Diabetes Undergoing Percutaneous Coronary Intervention. JACC Cardiovasc Interv. 2023 Jan 9;16(1):19-31. doi: 10.1016/j.jcin.2022.09.053. Epub 2022 Dec 14.
• Obayashi Y, Watanabe H, Morimoto T, Yamamoto K, Natsuaki M, Domei T, Yamaji K, Suwa S, Isawa T, Watanabe H, Yoshida R, Sakamoto H, Akao M, Hata Y, Morishima I, Tokuyama H, Yagi M, Suzuki H, Wakabayashi K, Suematsu N, Inada T, Tamura T, Okayama H, Abe M, Kawai K, Nakao K, Ando K, Tanabe K, Ikari Y, Morino Y, Kadota K, Furukawa Y, Nakagawa Y, Kimura T; STOPDAPT-2 and STOPDAPT-2 ACS Investigators. Clopidogrel Monotherapy After 1-Month Dual Antiplatelet Therapy in Percutaneous Coronary Intervention: From the STOPDAPT-2 Total Cohort. Circ Cardiovasc Interv. 2022 Aug;15(8):e012004. doi: 10.1161/CIRCINTERVENTIONS.122.012004. Epub 2022 Aug 1.
• Watanabe H, Morimoto T, Natsuaki M, Yamamoto K, Obayashi Y, Ogita M, Suwa S, Isawa T, Domei T, Yamaji K, Tatsushima S, Watanabe H, Ohya M, Tokuyama H, Tada T, Sakamoto H, Mori H, Suzuki H, Nishikura T, Wakabayashi K, Hibi K, Abe M, Kawai K, Nakao K, Ando K, Tanabe K, Ikari Y, Morino Y, Kadota K, Furukawa Y, Nakagawa Y, Kimura T; STOPDAPT-2 ACS Investigators. Comparison of Clopidogrel Monotherapy After 1 to 2 Months of Dual Antiplatelet Therapy With 12 Months of Dual Antiplatelet Therapy in Patients With Acute Coronary Syndrome: The STOPDAPT-2 ACS Randomized Clinical Trial. JAMA Cardiol. 2022 Apr 1;7(4):407-417. doi: 10.1001/jamacardio.2021.5244.
• Yamamoto K, Watanabe H, Morimoto T, Domei T, Ohya M, Ogita M, Takagi K, Suzuki H, Nikaido A, Ishii M, Fujii S, Natsuaki M, Yasuda S, Kaneko T, Tamura T, Tamura T, Abe M, Kawai K, Nakao K, Ando K, Tanabe K, Ikari Y, Igarashi Hanaoka K, Morino Y, Kozuma K, Kadota K, Furukawa Y, Nakagawa Y, Kimura T; STOPDAPT-2 Investigators. Very Short Dual Antiplatelet Therapy After Drug-Eluting Stent Implantation in Patients Who Underwent Complex Percutaneous Coronary Intervention: Insight From the STOPDAPT-2 Trial. Circ Cardiovasc Interv. 2021 May;14(5):e010384. doi: 10.1161/CIRCINTERVENTIONS.120.010384. Epub 2021 May 18.
• Watanabe H, Morimoto T, Ogita M, Suwa S, Natsuaki M, Suematsu N, Koeda Y, Morino Y, Nikaido A, Hata Y, Doi M, Hibi K, Kimura K, Yoda S, Kaneko T, Nishida K, Kawai K, Yamaguchi K, Wakatsuki T, Tonoike N, Yamamoto M, Shimizu S, Shimohama T, Ako J, Kimura T; STOPDAPT-2 Investigators. Influence of CYP2C19 genotypes for the effect of 1-month dual antiplatelet therapy followed by clopidogrel monotherapy relative to 12-month dual antiplatelet therapy on clinical outcomes after percutaneous coronary intervention: a genetic substudy from the STOPDAPT-2. Cardiovasc Interv Ther. 2021 Oct;36(4):403-415. doi: 10.1007/s12928-020-00719-6. Epub 2020 Nov 12.
• Watanabe H, Domei T, Morimoto T, Natsuaki M, Shiomi H, Toyota T, Ohya M, Suwa S, Takagi K, Nanasato M, Hata Y, Yagi M, Suematsu N, Yokomatsu T, Takamisawa I, Doi M, Noda T, Okayama H, Seino Y, Tada T, Sakamoto H, Hibi K, Abe M, Kawai K, Nakao K, Ando K, Tanabe K, Ikari Y, Hanaoka KI, Morino Y, Kozuma K, Kadota K, Furukawa Y, Nakagawa Y, Kimura T; STOPDAPT-2 investigators. Details on the effect of very short dual antiplatelet therapy after drug-eluting stent implantation in patients with high bleeding risk: insight from the STOPDAPT-2 trial. Cardiovasc Interv Ther. 2021 Jan;36(1):91-103. doi: 10.1007/s12928-020-00651-9. Epub 2020 Feb 21.
• Watanabe H, Domei T, Morimoto T, Natsuaki M, Shiomi H, Toyota T, Ohya M, Suwa S, Takagi K, Nanasato M, Hata Y, Yagi M, Suematsu N, Yokomatsu T, Takamisawa I, Doi M, Noda T, Okayama H, Seino Y, Tada T, Sakamoto H, Hibi K, Abe M, Kawai K, Nakao K, Ando K, Tanabe K, Ikari Y, Hanaoka KI, Morino Y, Kozuma K, Kadota K, Furukawa Y, Nakagawa Y, Kimura T; STOPDAPT-2 Investigators. Effect of 1-Month Dual Antiplatelet Therapy Followed by Clopidogrel vs 12-Month Dual Antiplatelet Therapy on Cardiovascular and Bleeding Events in Patients Receiving PCI: The STOPDAPT-2 Randomized Clinical Trial. JAMA. 2019 Jun 25;321(24):2414-2427. doi: 10.1001/jama.2019.8145.

Drugs

Indications