A Study of Tasisulam in Treating Participants With Malignant Melanoma

Participants achieved an objective response if they had a best overall response of complete response (CR) or partial response (PR). According to Response Evaluation Criteria in Solid Tumors v1.1 (RECIST v1.1), CR was the disappearance of all non-nodal target lesions, with the short axes of any target lymph node reduced to <10 mm, the disappearance of all non-target lesions, and the normalization of tumor marker levels (if tumor markers were initially above the upper limit of normal); PR was defined as at least a 30% decrease in the sum of the diameters of target lesions (including the short axes of any target lymph node), taking as reference the baseline sum diameter. For each participant who is not known to have died or to have had objective progression of disease as of the data-inclusion cut-off date for a particular analysis, duration of tumor response was to be censored at the date of the participant's last objective tumor assessment prior to that cut-off date.

PFS was defined as the time from baseline until measured PD or death from any cause, whichever is first. According to Response Evaluation Criteria in Solid Tumors v1.1 (RECIST v1.1), PD was at least a 20% increase in the sum of the diameters of target lesions, taking as reference the smallest sum on study. In addition to the 20% relative increase, the sum must have also demonstrated an absolute increase of at least 5 millimeters (mm). The appearance of 1 or more new lesions and/or unequivocal progression of existing nontarget lesions was also considered progression. Participants without objectively determined PD, who were alive at the end of the follow-up period (or lost to follow-up), were censored on the date of the participant's last complete radiographic tumor assessment; if no baseline or post-baseline radiologic assessment was available, the participant was censored at the date of randomization.

Participants achieved disease control if they had a best overall response of PR, CR or SD. According to RECIST v1.1, CR was the disappearance of all non-nodal target lesions, with the short axes of any target lymph node reduced to <10 mm, the disappearance of all non-target lesions, and the normalization of tumor marker levels (if tumor markers were initially above the upper limit of normal [ULN]); PR was defined as at least a 30% decrease in the sum of the diameters of target lesions (including the short axes of any target lymph node), taking as reference the baseline sum diameter. SD was neither sufficient shrinkage to qualify as PR nor sufficient increase to qualify as PD, taking as reference the smallest sum diameter since treatment started. Clinical Response Rate was calculated as the number of participants who were free from progression (CR+PR+SD) for ≥2 cycles/number of participants who received at least 1 dose of tasisulam.

OS was defined as time from baseline to the date of death from any cause. Participants who were alive at the end of the follow-up period (or lost to follow-up) were censored on the last date the participant was known to be alive.

The duration of response was measured from the date of CR or PR to first date of documented PD or death and was censored at the date of the last assessment for responders who remained alive and did not have documented PD.

Duration of SD is defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, taking as reference the smallest sum of diameters while on study. SD is measured at the start of the study drug until progressive disease or death due to any cause, whichever is first. Censoring occurred if a participant did not have a complete baseline disease assessment, initiated on another anti-cancer therapy (censored at the date of the last complete objective progression-free disease assessment before initiation of the new therapy), was not known to have died or had objective progression as of the data inclusion cutoff date for analysis.

Data presented are the number of participants who experienced SAEs considered by the investigator to be related to study drug administration. A summary of SAEs and all other non-serious Adverse Event(s) (AEs), regardless of causality, is located in the Reported Adverse Event module.

FACT-G is a 27-item compilation of general questions divided into 4 primary health-related quality of life (HRQL) domains: Physical Well-Being, Social/Family Well-Being, Emotional Well-Being, and Functional Well-Being. Total scores ranged from 0 to 172; higher scores = better HRQL.