Cytokinetics, Inc.

Alan James Russell

Bradley Paul Morgan

David John Morgans, Jr

Pu-Ping Lu

Alex R Muci

Fady Malik

Jeffrey T Finer

Aaron Hinken

Malar Pannirselvam

Richard Hansen

Jim Hartman

David J Morgans

Provided are compounds of Formula I and compounds of Formula II: and pharmaceutically acceptable salts thereof, and methods for their use.

Certain 1H-imidazo[4,5-b]pyrazin-2(3H)-ones and 1H-imidazo[4,5-b]pyrazin-2-ols and methods for their use

Provided are methods for treating myasthenia gravis in a patient, comprising administering to the patient an effective amount of at least one chemical entity chosen from compounds of Formula I and compounds of Formula II: and pharmaceutically acceptable salts thereof.

Provided are certain chemical entities, and methods of use to modulate skeletal myosin, skeletal actin, skeletal tropomyosin, skeletal troponin C, skeletal troponin I, skeletal troponin T, and skeletal muscle, including fragments and isoforms thereof, as well as the skeletal sarcomere, and methods of use in the treatment of obesity, sarcopenia, wasting syndrome, frailty, cachexia, muscle spasm, post-surgical and post-traumatic muscle weakness, neuromuscular disease, and other indications.

Certain chemical entities, compositions and methods

Methods of identifying skeletal muscle activators are provided. Methods of activating skeletal muscle using skeletal muscle activators are also provided.

Modulating skeletal muscle

Provided is at least one chemical entity chosen from compounds of Formula I and Formula II: and pharmaceutically acceptable salts thereof, compositions thereof, and methods for their use in modulating one or more of skeletal myosin, skeletal actin, skeletal tropomyosin, skeletal troponin C, skeletal troponin I, skeletal troponin T, skeletal muscle, and skeletal sarcomere.

Certain 1H-imidazo[4,5-B]pyrazin-2(3H)-ones and 1H-imidazo[4,5-B]pyrazin-2-ols, compositions thereof, and methods for their use

Provided is at least one chemical entity chosen from compounds of Formula I and compounds of Formula II: and pharmaceutically acceptable salts thereof, compositions thereof, and methods for their use in modulating of one or more of skeletal myosin, skeletal actin, skeletal tropomyosin, skeletal troponin C, skeletal troponin I, skeletal troponin T, skeletal muscle, and skeletal sarcomere.

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San Francisco, CA, United States of America

Alan James Russell