2seventy bio to Host Investor Call at 8:00am ET on Tuesday, December 12 to Discuss Data from KarMMa-3 and KarMMa-2 Studies of Abecma (idecabtagene vicleucel)

2seventy bio, Inc. (Nasdaq: TSVT), a leading immuno-oncology cell therapy company, announced today that the Company will host a conference call on Tuesday, December 12, 2023, at 8:00am ET. The event will highlight data presented at the 65^th American Society of Hematology (ASH) Annual Meeting and Exposition, taking place from December 9-12, 2023, in San Diego.

Participants can access the conference call live via webcast which will be available on the Investors and Media page of the company's website at https://ir.2seventybio.com. A replay of the call will be available on the 2seventy bio website for 30 days following the event.

ASH Presentation Details
Oral Presentation: Idecabtagene Vicleucel (ide-cel) Versus Standard Regimens in Patients (pts) with Triple-Class Exposed (TCE) Relapsed and Refractory Multiple Myeloma (RRMM): Updated Analysis from KarMMa-3
Presenter: Paula Rodriguez-Otero
Date & Time: Monday, December 11, 4:45pm PT

Poster Presentation: Efficacy and Safety of Idecabtagene Vicleucel (ide-cel) in Patients with Clinical High-Risk Newly Diagnosed Multiple Myeloma (MM) with an Inadequate Response to Frontline Autologous Stem Cell Transplantation (ASCT): KarMMa-2 Cohort 2c Extended Follow-up
Presenters: Madhav Dhodapkar; Melissa Alsina
Date & Time: Saturday, December 9, 5:30 ? 7:30pm PT

About 2seventy bio
Our name, 2seventy bio, reflects why we do what we do - TIME. Cancer rips time away, and our goal is to work at the maximum speed of translating human thought into action ? 270 miles per hour ? to give the people we serve more time. We are building the leading immuno-oncology cell therapy company, focused on discovering and developing new therapies that truly disrupt the cancer treatment landscape.

With a deep understanding of the human body's immune response to tumor cells and how to translate cell therapies into practice, we're applying this knowledge to deliver next generation cellular therapies that focus on a broad range of hematologic malignancies, including the first FDA-approved CAR T cell therapy for multiple myeloma, as well as solid tumors. Our research and development is focused on delivering therapies that are designed with the goal to "think" smarter and faster than the disease. Importantly, we remain focused on accomplishing these goals by staying genuine and authentic to our "why" and keeping our people and culture top of mind every day.

For more information, visit www.2seventybio.com.

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