The purpose of this study is to evaluate the effects on the single-dose drug levels of mavacamten in healthy participants.

Inclusion Criteria:

• Body mass index between 18 and 32 kg/m^2, inclusive, at the Screening Visit
• Healthy, as determined by physical examination, vital signs, electrocardiograms (ECGs), and clinical laboratory assessments within the normal range at the screening visit and/or on Day -1

Exclusion Criteria:

• Current or recent (within 3 months of study intervention administration) gastrointestinal disease
• History of any significant drug allergy (such as anaphylaxis or hepatotoxicity)

Other protocol-defined inclusion/exclusion criteria apply