A Study to Assess the Safety and Efficacy of the VEGFR-FGFR-PDGFR Inhibitor, Lucitanib, Given to Patients With Metastatic Breast Cancer

The primary efficacy endpoint of PFS was calculated as 1+ the number of days from the date of first dose of study drug to disease progression or death due to any cause, whichever occurs first. Patients without a documented event of progression were censored on the date of their last adequate tumor assessment (i.e., radiologic assessment), or the date of randomization if no tumor assessments were performed. Progression events were determined by the investigator. Progression is defined using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1), at least a 20% increase in the sum of the longest diameter of target lesions, taking as reference the smallest sum on study (this includes the baseline sum if that is the smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. The appearance of one or more new lesions is also considered progression.

Time frame: From Cycle 1 Day 1 until disease progression or end of treatment, whichever came first, assessed up to 29 months

Population: Efficacy population: all patients who have received at least one dose of lucitanib and are confirmed as FGR1-, 11q-amplified, or FGF non-amplified per the central laboratory

FACT-B is used for assessment of health-related quality of life (QoL) in participants with breast cancer. It consists of 37 items, summarized to 5 subscales: physical (7 items), functional (7 items), social/family (7 items); all 3 ranged from 0 to 28, emotional (6 items) ranging from 0 to 24, and breast cancer subscale (10 items) ranging from 0 to 40; high subscale score represents a better QoL. All single-item measures range from 0='Not at all' to 4='Very much'. FACT-B Total Score is derived from adding the five subscale scores. Total possible score ranges from 0 to 148. High scale score represents a better QoL.

Time frame: From Cycle 1 Day 1 until end of treatment, assessed up to 29 months

Population: Efficacy Population defined as all patients who have received at least one dose of Lucitanib and have at least one post-baseline Investigator Overall Objective Tumor Assessment. 'Overall Number of Participants Analyzed'=participants who completed both a baseline FACT-B assessment and at least one post-baseline assessment.

The comparative PK study was a within-patient comparison of tablet and capsule formulations of lucitanib administered orally. PK sampling was performed at specified time points on each of the following two days: • Day -7: patients received a single administration of 10 mg or 15 mg lucitanib tablet formulation • Day 1: patients received a single administration of 10 mg or 15 mg lucitanib in capsule formulation. AUCinf = area under the plasma concentration time curve from 0 to infinity

Time frame: Study Day -7 to Study Day 1, or approximately 8 days

Population: PK parameters were assessed in a subset of patients (N=15)

The comparative PK study was a within-patient comparison of tablet and capsule formulations of lucitanib administered orally. PK sampling was performed at specified time points on each of the following two days: • Day -7: patients received a single administration of 10 mg or 15 mg lucitanib tablet formulation • Day 1: patients received a single administration of 10 mg or 15 mg lucitanib in capsule formulation. AUClast = area under the plasma concentration time curve from time 0 to the last quantifiable time point (24 hour)

Time frame: Study Day -7 to Study Day 1, or approximately 8 days

Population: PK parameters were assessed in a subset of patients (N=15)

The comparative PK study was a within-patient comparison of tablet and capsule formulations of lucitanib administered orally. PK sampling was performed at specified time points on each of the following two days: • Day -7: patients received a single administration of 10 mg or 15 mg lucitanib tablet formulation • Day 1: patients received a single administration of 10 mg or 15 mg lucitanib in capsule formulation. Cmax = maximum concentration following administration of lucitanib.

Time frame: Study Day -7 to Study Day 1, or approximately 8 days

Population: PK parameters were assessed in a subset of patients (N=15)

The comparative PK study was a within-patient comparison of tablet and capsule formulations of lucitanib administered orally. PK sampling was performed at specified time points on each of the following two days: • Day -7: patients received a single administration of 10 mg or 15 mg lucitanib tablet formulation • Day 1: patients received a single administration of 10 mg or 15 mg lucitanib in capsule formulation. Tmax = time to maximum concentration following administration of lucitanib

Time frame: Study Day -7 to Study Day 1, or approximately 8 days

Population: PK parameters were assessed in a subset of patients (N=15)

The DCR is defined as the percentage of patients with a best response rate of CR, PR, or SD for at least 12 weeks. Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1) for target lesions, defined by and assessed as: Complete Response (CR), is disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \< 10 mm. Partial Response (PR), at least a 30% decrease in the sum of the longest diameter of target lesions, taking as reference the baseline sum of longest diameter. Stable Disease (SD), neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for progressive disease (PD), taking as reference the smallest sum longest diameter since the treatment started.

Time frame: From Cycle 1 Day 1 until disease progression or end of treatment, whichever came first, assessed up to 29 months

Population: Efficacy population only

DR for complete response (CR) and partial response (PR) was measured from the date that any of these best confirmed responses was first recorded until the first date that PD was objectively documented. Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1) for target lesions, defined by and assessed as: Complete Response (CR), is disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \< 10 mm. Partial Response (PR), at least a 30% decrease in the sum of the longest diameter of target lesions, taking as reference the baseline sum of longest diameter.

Time frame: From Cycle 1 Day 1 until disease progression or end of treatment, whichever came first, assessed up to 29 months

Population: Efficacy population for patients who had a confirmed CR or PR

ORR is the percentage of patients with a best response of CR or PR according to RECIST v1.1. The best response is recorded from the start of the treatment (Day 1) until disease progression or recurrence. Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1) for target lesions, defined by and assessed as: Complete Response (CR), is disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \< 10 mm. Partial Response (PR), at least a 30% decrease in the sum of the longest diameter of target lesions, taking as reference the baseline sum of longest diameter.

Time frame: From Cycle 1 Day 1 until disease progression or end of treatment, whichever came first, assessed up to 29 months

Population: Efficacy population: all patients who have received at least one dose of lucitanib and are confirmed as FGR1-, 11q-amplified, or FGF non-amplified per the central laboratory

Overall survival (OS) is defined as the number of days from the date of first dose of study drug to the date of death (due to any cause). Patients without a known date of death will be censored on the date the patient was last known to be alive.

Time frame: Cycle 1 Day 1 to date of death, assessed up to 29 months

Population: Intent to treat population by initial treatment and overall

Relative bioavailability of lucitanib was evaluated by comparison of (log-transformed) AUClast, Cmax and AUCinf of the tablet formulation to the capsule formulation using an analysis of variance (ANOVA) model with treatment as a fixed effect. The geometric means, ratio of the geometric means and 90% confidence intervals (CI) on the ratio of Tablet to Capsule (T:R) were presented for AUClast, Cmax and AUCinf. The CIs on the ratio of untransformed PK parameters were derived through reverse transformation of the 90% CI of the difference in the log scale to the 90% CI of the ratio in the original scale.

Time frame: Study Day -7 to Study Day 1, or approximately 8 days

Population: PK parameters were assessed in a subset of patients (N=15).