A Phase I Trial to Assess the Effects of Food and Formulation on PK of KPT-330 in Patients With Sarcoma

AUC0-t was defined as area under the concentration-time curve from time zero to the last non-zero concentration.

AUC0-inf was defined as area under the concentration-time curve from time zero to infinity (extrapolated), AUC0-inf was calculated as AUC0-t + Ct/ elimination rate constant (kel), where: Ct = the last observed non- zero concentration.

Cmax was defined as maximum observed concentration, taken directly from the plasma concentration data.

Tmax was defined as time of first observation of Cmax, taken directly from the plasma concentration data.

t1/2 was the terminal phase half-life, it was calculated as ln(2)/kel.

Apparent total body clearance was calculated as Dose/AUC0-inf, uncorrected for fraction absorbed; reported normalized by participant body weight (kilogram [kg]).

Vd/F was calculated as Dose/ (kel *AUC0-inf), uncorrected for fraction absorbed; reported normalized by participant body weight (kg).

Best overall response rate was defined as the percentage of participants who achieved complete response (CR), and partial response (PR), as assessed by the RECIST v1.1 criteria. CR was defined as disappearance of all target lesions. Any pathological lymph nodes (whether target or non target) must have reduction in the short axis to less than (<) 10 millimeter (mm). PR was defined as At least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum longest diameter (LD).

Duration of at least stable disease was defined as the time from the date of first dose of study treatment to first documented radiologic evidence of disease recurrence or progression as per RECIST v1.1 Criteria. Participants without evidence of progression were censored at time of last disease assessment. Progressive Disease (PD) was defined as at least a 20% increase in the sum of diameters of measured lesions taking as references the smallest sum of diameters recorded since the treatment started. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Appearance of one or more new lesions also constituted progressive disease.

PFS was defined as the time from the date of randomization until the first date of Independent Review Committee (IRC)-confirmed PD per RECIST v1.1, or death due to any cause. PD was defined as at least a 20% increase in the sum of the longest diameter (SLD), taking as reference the smallest sum of the longest diameter (SLD) recorded from baseline or the appearance of 1 or more new lesions. Participants who were last known to be alive and without evidence of progression were censored at time of last disease assessment. If date of progression or death occurred after more than 1 missed disease assessment interval, or 30 days after end of treatment, participants were censored at the time of last evaluable disease assessment prior to the missed assessment.

OS was defined as the time from date first dose of study treatment to the date of death. Participants who were still alive prior to the data cutoff for final efficacy analysis, or who dropped out prior to study end, were censored at the day they were last known to be alive.

TTP was defined as the time from date of first dose of study treatment to first documented evidence of disease recurrence or progression, or death due to disease progression, whichever occurred first. Participants without evidence of progression were censored at time of last evaluable disease assessment.

GMI was defined as the ratio between the TTP with selinexor and the TTP with the most recent prior treatment. GMI was calculated, using a previously described threshold of 1.3 or greater as a sign of potential drug activity and improved overall survival.

An AE was any untoward medical occurrence in a participant administered a pharmaceutical product during the course of a study and which does not necessarily have to have a causal relationship with this treatment. SAE defined as any AE, occurring at any dose (including after the informed consent form was signed and prior to dosing) that and regardless of causality that: results in death, is life-threatening (participant was at immediate risk of death from event as it occurred), requires in-patient hospitalization (formal admission to a hospital for medical reasons) or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, results in a congenital anomaly/birth defect. TEAE was defined as any AE with onset or worsening of a pre-existing condition on or after the first administration of study treatment through 30 days following last dose or any event considered drug-related by the investigator through the end of the study.

AE was defined as the appearance of (or worsening of any pre-existing) undesirable sign, symptom, or medical condition that occur after participant's signed informed consent obtained. TEAE was defined as any AE with onset or worsening of a pre-existing condition on or after the first administration of study treatment through 28 days following last dose or any event considered drug-related by the investigator through the end of the study. Grade refers to the severity of the AE. The CTCAE displays Grades 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: Grade 1: mild, Grade 2: moderate, Grade 3: severe, Grade 4: life-threatening, and Grade 5: death.

Number of participants with clinically significant laboratory abnormalities including clinical chemistry, hematology, coagulation and urinalysis. Number of participants with clinically significant laboratory abnormalities which were deemed clinically significant by the investigator were reported.

Vital signs included blood pressure (systolic blood pressure and diastolic blood pressure). Measurements were made after the participant had been resting supine for a minimum of 5 minutes. Clinically significant findings were defined as such in the opinion of the investigator occurring at any time on treatment from normal pre-dose based on the condition met (Yes/No). Number of participants with clinically significant changes in vital signs with condition (Yes) were only reported.

Twelve lead ECGs were obtained after the participant has rested in a supine position for at least 5 minutes. Clinically significant findings were defined as such in the opinion of the investigator or designated physician occurring at any time on treatment from normal pre-dose.