The current commercially available MEKTOVI® (binimetinib) 15 mg tablets are provided as immediate release film-coated tablets for oral administration. For the treatment of adult patients with unresectable or metastatic melanoma with BRAF V600 mutation, the recommended dosing regimen is 45 mg twice daily (bis in die, BID). No food effect with the commercial formulation of 15 mg was demonstrated.

In order to reduce the patient's burden, a new strength tablet containing 45 mg of binimetinib as active ingredient is being developed. As a result, the number of tablets to be taken by the patients will be reduced from 6 tablets (6 x 15 mg) to 2 tablets (2 x 45 mg) per day. The evaluation of the relative bioavailability of the 45 mg tablet in comparison to three 15 mg tablets intake is therefore required.

The R formulation is the currently commercially available tablet containing 15 mg of binimetinib as active substance, administered as three tablets for a total of 45 mg binimetinib. The T formulation is the tablet containing 45 mg of binimetinib as active substance in one tablet. Participants will be randomized to one of 2 treatment sequences (RT or TR) containing 2 treatment periods, with at least a 7-day washout between each dose.

The study will consist of a screening period between 21 and 2 days before the first study treatment administration on Period (P) 1 Day (D) 1, 2 treatment periods of 5 days each, and a washout of at least 7 days between P1D1 and P2D1.

Study treatments are given by the oral route in fasted condition. The end-of-study (EOS) visit will be performed 30 (± 3) days after the last study treatment administration or discontinuation.

Inclusion Criteria:

1. Healthy participant.
2. Female participants must be postmenopausal or sterilized.
3. Body mass index (BMI) of ≥ 18.5 to < 30 kg/m2, with body weight ≥ 50 kg and < 100 kg.
4. Vital signs within the following ranges or if out of normal ranges, considered as not clinically significant by the Investigator.
5. Participants must have safety laboratory values within the normal ranges or if out of normal ranges considered as not clinically significant by the Investigator.

Exclusion Criteria:

1. Pregnant or currently breastfeeding women, where pregnancy is defined as the state of a female after conception and until the termination of gestation, confirmed by a positive human chorionic gonadotropin (hCG) laboratory test.

2. A past medical history of clinically significant ECG abnormalities or a family history (grandparents, parents, and siblings) of prolonged QT interval syndrome.

3. Impaired cardiovascular function.

4. History of fainting spells or orthostatic hypotension episodes.

5. Any surgical or medical condition which might significantly alter the absorption, distribution, metabolism or excretion of drugs or which may jeopardize the participant in case of participation in the study.

6. History of autonomic dysfunction or Gilbert syndrome.

7. History or current evidence of Central serous retinopathy (CSR), Retinal vein occlusion (RVO) or ophthalmopathy as assessed by ophthalmologic examination at baseline that would be considered a risk factor for CSR/RVO [e.g., optic disc cupping, visual field defects, intraocular pressure (IOP) > 21 mmHg].

8. Neuromuscular disorders that were associated with elevated CK (e.g., inflammatory myopathies, muscular dystrophy, amyotrophic lateral sclerosis, spinal muscular atrophy).

9. Smoker or use of tobacco products or products containing nicotine in the last 4 weeks prior to first dosing of study treatment.

10. Malignancy with the following exceptions:

    1. Adequately treated basal cell or squamous cell carcinoma of the skin (adequate wound healing is required prior to study entry).
    2. Primary malignancy which had been completely resected and was in complete remission for ≥ 5 years.

11. History of retinal degenerative disease.

12. Any vaccination within 4 weeks prior to dosing.