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Chugai Unveils LUNSUMIO: A Breakthrough in Lymphoma Treatment

Chugai debuts LUNSUMIO in Japan, offering a promising new treatment for relapsed or refractory follicular lymphoma.

Mrudula Kulkarni
By Mrudula Kulkarni
Managing Editor - Pharma Now
Mar 19, 2025Updated Jun 26, 2025 · 2 min read
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Chugai Unveils LUNSUMIO: A Breakthrough in Lymphoma Treatment
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Reviewed by Mrudula Kulkarni, Managing Editor - Pharma Now

Chugai Pharmaceutical has officially launched LUNSUMIO® (mosunetuzumab) in Japan, bringing new hope to patients with relapsed or refractory follicular lymphoma who have undergone at least two prior treatments. This innovative bispecific antibody, approved by Japan’s Ministry of Health, Labour and Welfare in December 2024, is now listed on the national health insurance reimbursement price list. Designed to provide durable remission with a predefined treatment duration, LUNSUMIO offers a much-needed alternative for patients facing recurring lymphoma.

Chugai’s President and CEO, Dr. Osamu Okuda, emphasized the significance of this milestone, highlighting LUNSUMIO’s potential to ease the treatment burden on patients and their families. The approval is backed by promising data from the Japanese FLMOON-1 study and a global Phase I/II trial led by Roche, both demonstrating the drug’s efficacy as a monotherapy. With four-year follow-up data presented at ASH 2024, LUNSUMIO is poised to reshape the treatment landscape for follicular lymphoma, offering renewed hope for patients battling this challenging disease.

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Mrudula Kulkarni
Written by
Mrudula Kulkarni
Managing Editor - Pharma Now

My international experience as a researcher in Taiwan for three years has equipped me with a global perspective, enabling me to create content that resonates with an international audience.



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