Participants received cobimetinib via solution or capsule, once daily for Days 1-21 of each 28-day cycle and were on 21-days-on and 7-days-off schedule. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib via solution or capsule, once daily for Days 1-14 of each 28-day cycle and were on a 14-days-on and 14-days-off schedule. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib (GDC-0973/XL518) 0.05 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle (21 days on drug followed by 7 days off treatment [21/7 schedule]). Treatment was continued until progressive disease (PD) or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.10 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.20 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 10 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 20 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 40 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 80 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib (GDC-0973/XL518) 0.05 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle (21 days on drug followed by 7 days off treatment [21/7 schedule]). Treatment was continued until progressive disease (PD) or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.10 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.20 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 10 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 20 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 40 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 80 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib (GDC-0973/XL518) 0.05 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle (21 days on drug followed by 7 days off treatment [21/7 schedule]). Treatment was continued until progressive disease (PD) or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.10 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.20 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 10 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 20 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 40 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 80 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib (GDC-0973/XL518) 0.05 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle (21 days on drug followed by 7 days off treatment [21/7 schedule]). Treatment was continued until progressive disease (PD) or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.10 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.20 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 10 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 20 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 40 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 80 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib (GDC-0973/XL518) 0.05 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle (21 days on drug followed by 7 days off treatment [21/7 schedule]). Treatment was continued until progressive disease (PD) or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.10 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.20 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 10 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 20 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 40 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 80 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib (GDC-0973/XL518) 0.05 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle (21 days on drug followed by 7 days off treatment [21/7 schedule]). Treatment was continued until progressive disease (PD) or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.10 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.20 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 10 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 20 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 40 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 80 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib (GDC-0973/XL518) 0.05 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle (21 days on drug followed by 7 days off treatment [21/7 schedule]). Treatment was continued until progressive disease (PD) or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.10 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.20 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 10 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 20 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 40 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 80 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib (GDC-0973/XL518) 0.05 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle (21 days on drug followed by 7 days off treatment [21/7 schedule]). Treatment was continued until progressive disease (PD) or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.10 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.20 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 10 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 20 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 40 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 80 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib (GDC-0973/XL518) 0.05 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle (21 days on drug followed by 7 days off treatment [21/7 schedule]). Treatment was continued until progressive disease (PD) or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.10 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.20 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 10 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 20 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 40 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 80 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib (GDC-0973/XL518) 0.05 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle (21 days on drug followed by 7 days off treatment [21/7 schedule]). Treatment was continued until progressive disease (PD) or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.10 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 0.20 mg/kg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 10 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 20 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 40 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 80 mg via solution or capsule, once daily for Days 1-21 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle (14 days on drug followed by 14 days off treatment [14/14 schedule]). Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 80 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 100 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 125 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle (14 days on drug followed by 14 days off treatment [14/14 schedule]). Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 80 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 100 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 125 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle (14 days on drug followed by 14 days off treatment [14/14 schedule]). Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 80 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 100 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 125 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle (14 days on drug followed by 14 days off treatment [14/14 schedule]). Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 80 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 100 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 125 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle (14 days on drug followed by 14 days off treatment [14/14 schedule]). Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 80 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 100 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 125 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle (14 days on drug followed by 14 days off treatment [14/14 schedule]). Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 80 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 100 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 125 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle (14 days on drug followed by 14 days off treatment [14/14 schedule]). Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 80 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 100 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 125 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle. Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.

Participants received cobimetinib 60 mg via solution or capsule, once daily for Days 1-14 of each 28-day cycle (14 days on drug followed by 14 days off treatment [14/14 schedule]). Treatment was continued until PD or unacceptable toxicity for up to 1 year at the discretion of investigator and beyond 1 year with the agreement of the sponsor.