fruquintinib+sintilimab

OS was defined as the time (months) from date of randomization to death from any cause. OS was calculated as (date of death or last known alive - date of randomization + 1)/30.4375. Participants without report of death at the time of analysis will be censored at the date last known alive.

PFS defined as the time from the date of randomization to the first evidence of disease progression as defined by response evaluation criteria in solid tumors (RECIST) v1.1 or death from any cause.

every two months after end of treatment (EOT) observation period at 30 days after the last medication

Occurrence of completed response or partial response after treatment, assessed by RECIST 1.1

Number of participants with treatment-related adverse events as assessed by CTCAE v4.03

To compare the Progressive Free Survival (PFS) of Fruquintinib plus best supportive care (BSC) versus placebo plus BSC in patients advanced non-squamous NSCLC patients who failed to standard second-line chemotherapy according to RECIST 1.1

Pharmacokinetics of fruquintinib by assessment of area under the plasma concentration time curve from zero to the last measurable concentration

Pharmacokinetics of fruquintinib by assessment of area under the plasma concentration curve from zero extrapolated to infinity (if data permit)

Pharmacokinetics of fruquintinib by assessment of maximum plasma fruquintinib concentration

Dose-limiting toxicity was defined as: Any Grade 4 non-hematologic toxicity; Any Grade 3 non-hematologic toxicity related to study drug except for nausea/vomiting, diarrhea, constipation, hypertension, and electrolyte imbalances downgraded within 3-days with appropriate supportive treatment; Grade 4 neutropenia lasting \>3 days; Grade 3 febrile neutropenia (absolute neutrophil count \[ANC\] \<1.0\*10\^9 per liter \[/L\] with a single temperature of greater than (\>) 38.3 degree centigrade (°C) or a sustained temperature of greater than or equal to (\>=) 38°C for more than 1 hour); Grade 4 thrombocytopenia or Grade 3 thrombocytopenia associated with bleeding; Dose interruption for \>14 days due to toxicity.

TEAEs were defined as AEs that started or worsened in severity on or after the first dose of study medication and no later than 37 days after the date of last study treatment. A serious adverse event (SAE) was any AE that had any of the following characteristics: Fatal (that was, the AE actually caused or led to death, except for deaths caused by the progress of disease); Life threatening (that was, AE, in view of the investigator, places participant at immediate risk of death); Required or prolonged inpatient hospitalization (excluding emergency or outpatient treatment); Resulted in persistent or significant disability/incapacity (that was, the AE resulted in substantial disruption of the participant's ability to conduct normal life functions).

PFS was defined as time from date of first dosing until date of an objective disease progression (PD) as defined by Response Evaluation Criteria in Solid Tumors (RECIST) Version (v) 1.1 or death due to any cause, whichever comes first. PFS was determined using all data until last evaluable visit prior to or on date of: (i) radiographic PD per RECIST v1.1; (ii) withdrawal of consent to obtain additional scans on study; or (iii) initiation of subsequent anticancer therapy other than study drugs, whichever was earlier. PFS rate was defined as probability of being disease progression free at selected timepoints such as 16 weeks and was calculated using Brookmeyer-Crowley method based on PFS events observed up to 29 months. PD:at least 20 percent (%) increase in sum of diameters of target lesions, taking as reference smallest sum on study, including baseline; an absolute increase of at least 5 millimeter (mm) in sum of diameters of target lesions; and appearance of one or more new lesions.

using RECIST v1.1 progressive disease (PD), using RECIST v 1.1

Safety and tolerance will be evaluated by incidence, severity and outcomes of adverse events (AEs) and categorized by severity in accordance with the NCI CTC AE Version 4.0.

The primary endpoint is evaluation of safety during the first 28-day cycle of therapy following the initiation of multiple dosing of HMPL-013. The safety variables to be evaluated in this study are adverse events, physical examinations, vital signs (specifically including blood pressure), clinical laboratory evaluations including serum chemistry, hematology , and urinalysis (with detailed sediment analysis, proteinuria, and 24-hour urine for collection for protein), and electrocardiograms (ECGs) in triplicate.