Trial Outcomes & Findings for BYL719 Plus Letrozole or Exemestane for Patients With Hormone-Receptor Positive Locally-Advanced Unresectable or Metastatic Breast Cancer (NCT NCT01870505)

NCT ID: NCT01870505

Last Updated: 2024-12-09

Results Overview

Participants started BYL719 dose of 300mg daily for cohort 0. Consecutive cohorts were administered increasing or decreasing dose levels of BYL719. All participants within a cohort will be observed for toxicity for one cycle (28 days) prior to entering additional patients.

Recruitment status

COMPLETED

Study phase

PHASE1

Target enrollment

52 participants

Primary outcome timeframe

28 days (1 Cycle)

Results posted on

2024-12-09

Participant Flow

Participant milestones

Participant milestones
Measure
DOSE FINDING PHASE, Arm A, Cohort 0
DOSE FINDING PHASE, Arm A, Cohort 0: BYL719 300mg PO, Letrozole 2.5mg PO
DOSE FINDING PHASE, Arm A, Cohort -1
DOSE FINDING PHASE, Arm A, Cohort -1: BYL719 250 mg PO, Letrozole 2.5mg PO
DOSE FINDING PHASE, Arm B, Cohort 0
DOSE FINDING PHASE, Arm B, Cohort 0: BYL719 300mg PO, Exemestane 25mg PO
Arm D
Arm D : Exemestane 25 mg PO + BYL719 MTD: 350mg PO
Dose Finding Phase, Arm C, Cohort 0
Dose Finding Phase, Arm C, Cohort 0: Letrozole 2.5mg PO daily \& BYL719 250 mg 7days on and 7days off.
Dose Finding Phase, Arm C, Cohort 1
Dose Finding Phase, Arm C, Cohort 1: Letrozole 2.5mg PO daily \& BYL719 300 mg 7days on and 7days off.
Dose Finding Phase, Arm D, Cohort 0
Dose Finding Phase, Arm D, Cohort 0: Exemestane 25mg PO daily \& BYL719 250 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 1
Dose Finding Phase, Arm D, Cohort 1: Exemestane 25mg PO daily \& BYL719 300 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 2
Dose Finding Phase, Arm D, Cohort 2: Exemestane 25mg PO daily \& BYL719 350 mg 5days on and 2days off.
Overall Study
STARTED
4
3
7
10
6
6
3
6
7
Overall Study
COMPLETED
4
3
7
10
6
6
3
6
7
Overall Study
NOT COMPLETED
0
0
0
0
0
0
0
0
0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

BYL719 Plus Letrozole or Exemestane for Patients With Hormone-Receptor Positive Locally-Advanced Unresectable or Metastatic Breast Cancer

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
DOSE FINDING PHASE, Arm A, Cohort 0
n=4 Participants
Period 1: DOSE FINDING PHASE, Arm A, Cohort 0: BYL719 300mg PO, Letrozole 2.5mg PO
DOSE FINDING PHASE, Arm A, Cohort -1
n=3 Participants
Period 2: DOSE FINDING PHASE, Arm A, Cohort -1: BYL719 250 mg PO, Letrozole 2.5mg PO
DOSE FINDING PHASE, Arm B, Cohort 0
n=7 Participants
Period 1: DOSE FINDING PHASE, Arm B, Cohort 0: BYL719 300mg PO, Exemestane 25mg PO
Arm D
n=10 Participants
Arm D : Exemestane 25 mg PO + BYL719 MTD: 350mg PO
Dose Finding Phase, Arm C, Cohort 0
n=6 Participants
Period 1: Dose Finding Phase, Arm C, Cohort 0: Letrozole 2.5mg PO daily \& BYL719 250 mg 7days on and 7days off.
Dose Finding Phase, Arm C, Cohort 1
n=6 Participants
Period 2: Dose Finding Phase, Arm C, Cohort 1: Letrozole 2.5mg PO daily \& BYL719 300 mg 7days on and 7days off.
Dose Finding Phase, Arm D, Cohort 0
n=3 Participants
Period 1: Dose Finding Phase, Arm D, Cohort 0: Exemestane 25mg PO daily \& BYL719 250 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 1
n=6 Participants
Period 2: Dose Finding Phase, Arm D, Cohort 1: Exemestane 25mg PO daily \& BYL719 300 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 2
n=7 Participants
Period 3: Dose Finding Phase, Arm D, Cohort 2: Exemestane 25mg PO daily \& BYL719 350 mg 5days on and 2days off.
Total
n=52 Participants
Total of all reporting groups
Age, Continuous
61 years
n=5 Participants
48 years
n=7 Participants
50 years
n=5 Participants
52 years
n=4 Participants
55 years
n=21 Participants
62 years
n=8 Participants
52 years
n=8 Participants
57 years
n=24 Participants
58 years
n=42 Participants
55 years
n=42 Participants
Sex: Female, Male
Female
4 Participants
n=5 Participants
3 Participants
n=7 Participants
7 Participants
n=5 Participants
10 Participants
n=4 Participants
6 Participants
n=21 Participants
6 Participants
n=8 Participants
3 Participants
n=8 Participants
6 Participants
n=24 Participants
7 Participants
n=42 Participants
52 Participants
n=42 Participants
Sex: Female, Male
Male
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
0 Participants
n=8 Participants
0 Participants
n=24 Participants
0 Participants
n=42 Participants
0 Participants
n=42 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
n=5 Participants
0 Participants
n=7 Participants
1 Participants
n=5 Participants
1 Participants
n=4 Participants
1 Participants
n=21 Participants
0 Participants
n=8 Participants
0 Participants
n=8 Participants
0 Participants
n=24 Participants
0 Participants
n=42 Participants
3 Participants
n=42 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
4 Participants
n=5 Participants
3 Participants
n=7 Participants
6 Participants
n=5 Participants
9 Participants
n=4 Participants
5 Participants
n=21 Participants
6 Participants
n=8 Participants
3 Participants
n=8 Participants
6 Participants
n=24 Participants
7 Participants
n=42 Participants
49 Participants
n=42 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
0 Participants
n=8 Participants
0 Participants
n=24 Participants
0 Participants
n=42 Participants
0 Participants
n=42 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
0 Participants
n=8 Participants
0 Participants
n=24 Participants
0 Participants
n=42 Participants
0 Participants
n=42 Participants
Race (NIH/OMB)
Asian
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
1 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
1 Participants
n=8 Participants
0 Participants
n=24 Participants
0 Participants
n=42 Participants
2 Participants
n=42 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
0 Participants
n=8 Participants
0 Participants
n=24 Participants
0 Participants
n=42 Participants
0 Participants
n=42 Participants
Race (NIH/OMB)
Black or African American
0 Participants
n=5 Participants
0 Participants
n=7 Participants
1 Participants
n=5 Participants
1 Participants
n=4 Participants
1 Participants
n=21 Participants
0 Participants
n=8 Participants
0 Participants
n=8 Participants
0 Participants
n=24 Participants
0 Participants
n=42 Participants
3 Participants
n=42 Participants
Race (NIH/OMB)
White
4 Participants
n=5 Participants
3 Participants
n=7 Participants
4 Participants
n=5 Participants
5 Participants
n=4 Participants
5 Participants
n=21 Participants
6 Participants
n=8 Participants
2 Participants
n=8 Participants
6 Participants
n=24 Participants
5 Participants
n=42 Participants
40 Participants
n=42 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
0 Participants
n=8 Participants
0 Participants
n=24 Participants
0 Participants
n=42 Participants
0 Participants
n=42 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
2 Participants
n=5 Participants
3 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
0 Participants
n=8 Participants
0 Participants
n=24 Participants
2 Participants
n=42 Participants
7 Participants
n=42 Participants
Region of Enrollment
United States
4 Participants
n=5 Participants
3 Participants
n=7 Participants
7 Participants
n=5 Participants
10 Participants
n=4 Participants
6 Participants
n=21 Participants
6 Participants
n=8 Participants
3 Participants
n=8 Participants
6 Participants
n=24 Participants
7 Participants
n=42 Participants
52 Participants
n=42 Participants

PRIMARY outcome

Timeframe: 28 days (1 Cycle)

Participants started BYL719 dose of 300mg daily for cohort 0. Consecutive cohorts were administered increasing or decreasing dose levels of BYL719. All participants within a cohort will be observed for toxicity for one cycle (28 days) prior to entering additional patients.

Outcome measures

Outcome measures
Measure
Arm A: BYL719 Plus Letrozole
n=7 Participants
For both the dose-finding phase and the expansion phase, patients may have stable or progressive disease on letrozole, and BYL719 will be added. A treatment cycle will consist of 28 days. Treatment doses for each AI will be fixed at the established dose. Patients will continue on treatment until progression of disease or unacceptable toxicity. The initial scan interval to assess disease status will be every two cycles (8 weeks) for the first four cycles (16 weeks), and then every 3rd cycle (12 weeks) thereafter. BYL719 Letrozole
Arm B: BYL719 Plus Exemestane
n=7 Participants
For both the dose-finding phase and the expansion phase, patients may have stable or progressive disease on Exemestane, and BYL719 will be added. A treatment cycle will consist of 28 days. Treatment doses for each AI will be fixed at the established dose. Patients will continue on treatment until progression of disease or unacceptable toxicity. The initial scan interval to assess disease status will be every two cycles (8 weeks) for the first four cycles (16 weeks), and then every 3rd cycle (12 weeks) thereafter. BYL719 Exemestane
Arm C: BYL719 Plus Letrozole
DOSE FINDING PHASE, Arm B, Cohort 0: BYL719 300mg PO, Exemestane 25mg PO
Arm D
Arm D : Exemestane 25 mg PO + BYL719 MTD: 350mg PO
Dose Finding Phase, Arm C, Cohort 0
Dose Finding Phase, Arm C, Cohort 0: Letrozole 2.5mg PO daily \& BYL719 250 mg 7days on and 7days off.
Dose Finding Phase, Arm C, Cohort 1
Dose Finding Phase, Arm C, Cohort 1: Letrozole 2.5mg PO daily \& BYL719 300 mg 7days on and 7days off.
Dose Finding Phase, Arm D, Cohort 0
Dose Finding Phase, Arm D, Cohort 0: Exemestane 25mg PO daily \& BYL719 250 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 1
Dose Finding Phase, Arm D, Cohort 1: Exemestane 25mg PO daily \& BYL719 300 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 2
Dose Finding Phase, Arm D, Cohort 2: Exemestane 25mg PO daily \& BYL719 350 mg 5days on and 2days off.
Phase II Dose of BYL719/Alpelisib (Arm A and Arm B)
250 mg
250 mg

PRIMARY outcome

Timeframe: 28 days (1 cycle)

Participants started BYL719 dose of 250 daily for cohort 0. Consecutive cohorts were administered increasing or decreasing dose levels of BYL719.

Outcome measures

Outcome measures
Measure
Arm A: BYL719 Plus Letrozole
n=12 Participants
For both the dose-finding phase and the expansion phase, patients may have stable or progressive disease on letrozole, and BYL719 will be added. A treatment cycle will consist of 28 days. Treatment doses for each AI will be fixed at the established dose. Patients will continue on treatment until progression of disease or unacceptable toxicity. The initial scan interval to assess disease status will be every two cycles (8 weeks) for the first four cycles (16 weeks), and then every 3rd cycle (12 weeks) thereafter. BYL719 Letrozole
Arm B: BYL719 Plus Exemestane
n=26 Participants
For both the dose-finding phase and the expansion phase, patients may have stable or progressive disease on Exemestane, and BYL719 will be added. A treatment cycle will consist of 28 days. Treatment doses for each AI will be fixed at the established dose. Patients will continue on treatment until progression of disease or unacceptable toxicity. The initial scan interval to assess disease status will be every two cycles (8 weeks) for the first four cycles (16 weeks), and then every 3rd cycle (12 weeks) thereafter. BYL719 Exemestane
Arm C: BYL719 Plus Letrozole
DOSE FINDING PHASE, Arm B, Cohort 0: BYL719 300mg PO, Exemestane 25mg PO
Arm D
Arm D : Exemestane 25 mg PO + BYL719 MTD: 350mg PO
Dose Finding Phase, Arm C, Cohort 0
Dose Finding Phase, Arm C, Cohort 0: Letrozole 2.5mg PO daily \& BYL719 250 mg 7days on and 7days off.
Dose Finding Phase, Arm C, Cohort 1
Dose Finding Phase, Arm C, Cohort 1: Letrozole 2.5mg PO daily \& BYL719 300 mg 7days on and 7days off.
Dose Finding Phase, Arm D, Cohort 0
Dose Finding Phase, Arm D, Cohort 0: Exemestane 25mg PO daily \& BYL719 250 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 1
Dose Finding Phase, Arm D, Cohort 1: Exemestane 25mg PO daily \& BYL719 300 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 2
Dose Finding Phase, Arm D, Cohort 2: Exemestane 25mg PO daily \& BYL719 350 mg 5days on and 2days off.
Phase II Dose of BYL719 (Arm C and Arm D)
250 mg
350 mg

SECONDARY outcome

Timeframe: 28 days (1 cycle)

Toxicity will be tabulated using the NCI Common Toxicity Criteria (CTCAE), version 4.0. A dose-limiting toxicity (DLT) is defined as an adverse event or abnormal laboratory value assessed as at least possibly related to the study medication, meeting any of the criteria listed in the table below, and occurring during Cycle 1 (≤ 28 days following the first dose of BYL719, including those in which the event started in Cycle 1 and the confirmation of the DLT occurs in a subsequent cycle).

Outcome measures

Outcome measures
Measure
Arm A: BYL719 Plus Letrozole
n=4 Participants
For both the dose-finding phase and the expansion phase, patients may have stable or progressive disease on letrozole, and BYL719 will be added. A treatment cycle will consist of 28 days. Treatment doses for each AI will be fixed at the established dose. Patients will continue on treatment until progression of disease or unacceptable toxicity. The initial scan interval to assess disease status will be every two cycles (8 weeks) for the first four cycles (16 weeks), and then every 3rd cycle (12 weeks) thereafter. BYL719 Letrozole
Arm B: BYL719 Plus Exemestane
n=3 Participants
For both the dose-finding phase and the expansion phase, patients may have stable or progressive disease on Exemestane, and BYL719 will be added. A treatment cycle will consist of 28 days. Treatment doses for each AI will be fixed at the established dose. Patients will continue on treatment until progression of disease or unacceptable toxicity. The initial scan interval to assess disease status will be every two cycles (8 weeks) for the first four cycles (16 weeks), and then every 3rd cycle (12 weeks) thereafter. BYL719 Exemestane
Arm C: BYL719 Plus Letrozole
n=7 Participants
DOSE FINDING PHASE, Arm B, Cohort 0: BYL719 300mg PO, Exemestane 25mg PO
Arm D
n=10 Participants
Arm D : Exemestane 25 mg PO + BYL719 MTD: 350mg PO
Dose Finding Phase, Arm C, Cohort 0
n=6 Participants
Dose Finding Phase, Arm C, Cohort 0: Letrozole 2.5mg PO daily \& BYL719 250 mg 7days on and 7days off.
Dose Finding Phase, Arm C, Cohort 1
n=6 Participants
Dose Finding Phase, Arm C, Cohort 1: Letrozole 2.5mg PO daily \& BYL719 300 mg 7days on and 7days off.
Dose Finding Phase, Arm D, Cohort 0
n=3 Participants
Dose Finding Phase, Arm D, Cohort 0: Exemestane 25mg PO daily \& BYL719 250 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 1
n=6 Participants
Dose Finding Phase, Arm D, Cohort 1: Exemestane 25mg PO daily \& BYL719 300 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 2
n=7 Participants
Dose Finding Phase, Arm D, Cohort 2: Exemestane 25mg PO daily \& BYL719 350 mg 5days on and 2days off.
Number of Participants Evaluated for Safety and Tolerability of BYL719 (Arm A, B, C and D)
4 Participants
3 Participants
7 Participants
10 Participants
6 Participants
6 Participants
3 Participants
6 Participants
7 Participants

SECONDARY outcome

Timeframe: 2 years

Overall response rate

Outcome measures

Outcome measures
Measure
Arm A: BYL719 Plus Letrozole
n=7 Participants
For both the dose-finding phase and the expansion phase, patients may have stable or progressive disease on letrozole, and BYL719 will be added. A treatment cycle will consist of 28 days. Treatment doses for each AI will be fixed at the established dose. Patients will continue on treatment until progression of disease or unacceptable toxicity. The initial scan interval to assess disease status will be every two cycles (8 weeks) for the first four cycles (16 weeks), and then every 3rd cycle (12 weeks) thereafter. BYL719 Letrozole
Arm B: BYL719 Plus Exemestane
n=7 Participants
For both the dose-finding phase and the expansion phase, patients may have stable or progressive disease on Exemestane, and BYL719 will be added. A treatment cycle will consist of 28 days. Treatment doses for each AI will be fixed at the established dose. Patients will continue on treatment until progression of disease or unacceptable toxicity. The initial scan interval to assess disease status will be every two cycles (8 weeks) for the first four cycles (16 weeks), and then every 3rd cycle (12 weeks) thereafter. BYL719 Exemestane
Arm C: BYL719 Plus Letrozole
n=12 Participants
DOSE FINDING PHASE, Arm B, Cohort 0: BYL719 300mg PO, Exemestane 25mg PO
Arm D
n=26 Participants
Arm D : Exemestane 25 mg PO + BYL719 MTD: 350mg PO
Dose Finding Phase, Arm C, Cohort 0
Dose Finding Phase, Arm C, Cohort 0: Letrozole 2.5mg PO daily \& BYL719 250 mg 7days on and 7days off.
Dose Finding Phase, Arm C, Cohort 1
Dose Finding Phase, Arm C, Cohort 1: Letrozole 2.5mg PO daily \& BYL719 300 mg 7days on and 7days off.
Dose Finding Phase, Arm D, Cohort 0
Dose Finding Phase, Arm D, Cohort 0: Exemestane 25mg PO daily \& BYL719 250 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 1
Dose Finding Phase, Arm D, Cohort 1: Exemestane 25mg PO daily \& BYL719 300 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 2
Dose Finding Phase, Arm D, Cohort 2: Exemestane 25mg PO daily \& BYL719 350 mg 5days on and 2days off.
Efficacy of BYL719 (Arm A, Arm B, Arm C and Arm D)
Partial Response (PR)
1 Participants
0 Participants
0 Participants
4 Participants
Efficacy of BYL719 (Arm A, Arm B, Arm C and Arm D)
Stable Disease (SD)
4 Participants
3 Participants
6 Participants
13 Participants
Efficacy of BYL719 (Arm A, Arm B, Arm C and Arm D)
Progression of Disease (POD)
0 Participants
3 Participants
1 Participants
5 Participants
Efficacy of BYL719 (Arm A, Arm B, Arm C and Arm D)
Complete Response (CR)
0 Participants
0 Participants
0 Participants
1 Participants
Efficacy of BYL719 (Arm A, Arm B, Arm C and Arm D)
Unevaluable
2 Participants
1 Participants
5 Participants
3 Participants

SECONDARY outcome

Timeframe: through study completion, an average of 3.5 years

Time to Treatment Failure/TTF defined as the time from on-study date to off-study date for any reason

Outcome measures

Outcome measures
Measure
Arm A: BYL719 Plus Letrozole
n=7 Participants
For both the dose-finding phase and the expansion phase, patients may have stable or progressive disease on letrozole, and BYL719 will be added. A treatment cycle will consist of 28 days. Treatment doses for each AI will be fixed at the established dose. Patients will continue on treatment until progression of disease or unacceptable toxicity. The initial scan interval to assess disease status will be every two cycles (8 weeks) for the first four cycles (16 weeks), and then every 3rd cycle (12 weeks) thereafter. BYL719 Letrozole
Arm B: BYL719 Plus Exemestane
n=7 Participants
For both the dose-finding phase and the expansion phase, patients may have stable or progressive disease on Exemestane, and BYL719 will be added. A treatment cycle will consist of 28 days. Treatment doses for each AI will be fixed at the established dose. Patients will continue on treatment until progression of disease or unacceptable toxicity. The initial scan interval to assess disease status will be every two cycles (8 weeks) for the first four cycles (16 weeks), and then every 3rd cycle (12 weeks) thereafter. BYL719 Exemestane
Arm C: BYL719 Plus Letrozole
n=12 Participants
DOSE FINDING PHASE, Arm B, Cohort 0: BYL719 300mg PO, Exemestane 25mg PO
Arm D
n=26 Participants
Arm D : Exemestane 25 mg PO + BYL719 MTD: 350mg PO
Dose Finding Phase, Arm C, Cohort 0
Dose Finding Phase, Arm C, Cohort 0: Letrozole 2.5mg PO daily \& BYL719 250 mg 7days on and 7days off.
Dose Finding Phase, Arm C, Cohort 1
Dose Finding Phase, Arm C, Cohort 1: Letrozole 2.5mg PO daily \& BYL719 300 mg 7days on and 7days off.
Dose Finding Phase, Arm D, Cohort 0
Dose Finding Phase, Arm D, Cohort 0: Exemestane 25mg PO daily \& BYL719 250 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 1
Dose Finding Phase, Arm D, Cohort 1: Exemestane 25mg PO daily \& BYL719 300 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 2
Dose Finding Phase, Arm D, Cohort 2: Exemestane 25mg PO daily \& BYL719 350 mg 5days on and 2days off.
Median Time to Treatment Failure/TTF
21 weeks
Interval 2.0 to 169.0
8 weeks
Interval 2.0 to 29.0
12 weeks
Interval 3.0 to 72.0
17 weeks
Interval 3.0 to 150.0

Adverse Events

DOSE FINDING PHASE, Arm A, Cohort 0

Serious events: 1 serious events
Other events: 4 other events
Deaths: 0 deaths

DOSE FINDING PHASE, Arm A, Cohort -1

Serious events: 0 serious events
Other events: 1 other events
Deaths: 0 deaths

DOSE FINDING PHASE, Arm B, Cohort 0

Serious events: 4 serious events
Other events: 7 other events
Deaths: 2 deaths

Arm D

Serious events: 2 serious events
Other events: 10 other events
Deaths: 0 deaths

Dose Finding Phase, Arm C, Cohort 0

Serious events: 3 serious events
Other events: 6 other events
Deaths: 1 deaths

Dose Finding Phase, Arm C, Cohort 1

Serious events: 2 serious events
Other events: 6 other events
Deaths: 0 deaths

Dose Finding Phase, Arm D, Cohort 0

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Dose Finding Phase, Arm D, Cohort 1

Serious events: 1 serious events
Other events: 6 other events
Deaths: 0 deaths

Dose Finding Phase, Arm D, Cohort 2

Serious events: 2 serious events
Other events: 7 other events
Deaths: 1 deaths

Serious adverse events

Serious adverse events
Measure
DOSE FINDING PHASE, Arm A, Cohort 0
n=4 participants at risk
DOSE FINDING PHASE, Arm A, Cohort 0: BYL719 300mg PO, Letrozole 2.5mg PO
DOSE FINDING PHASE, Arm A, Cohort -1
n=3 participants at risk
DOSE FINDING PHASE, Arm A, Cohort -1: BYL719 250 mg PO, Letrozole 2.5mg PO
DOSE FINDING PHASE, Arm B, Cohort 0
n=7 participants at risk
DOSE FINDING PHASE, Arm B, Cohort 0: BYL719 300mg PO, Exemestane 25mg PO
Arm D
n=10 participants at risk
Arm D : Exemestane 25 mg PO + BYL719 MTD: 350mg PO
Dose Finding Phase, Arm C, Cohort 0
n=6 participants at risk
Dose Finding Phase, Arm C, Cohort 0: Letrozole 2.5mg PO daily \& BYL719 250 mg 7days on and 7days off.
Dose Finding Phase, Arm C, Cohort 1
n=6 participants at risk
Dose Finding Phase, Arm C, Cohort 1: Letrozole 2.5mg PO daily \& BYL719 300 mg 7days on and 7days off.
Dose Finding Phase, Arm D, Cohort 0
n=3 participants at risk
Dose Finding Phase, Arm D, Cohort 0: Exemestane 25mg PO daily \& BYL719 250 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 1
n=6 participants at risk
Dose Finding Phase, Arm D, Cohort 1: Exemestane 25mg PO daily \& BYL719 300 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 2
n=7 participants at risk
Dose Finding Phase, Arm D, Cohort 2: Exemestane 25mg PO daily \& BYL719 350 mg 5days on and 2days off.
Gastrointestinal disorders
Abdominal distension
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
14.3%
1/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
14.3%
1/7 • 2 years
Gastrointestinal disorders
Abdominal pain
25.0%
1/4 • 2 years
0.00%
0/3 • 2 years
14.3%
1/7 • 2 years
10.0%
1/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
28.6%
2/7 • 2 years
Blood and lymphatic system disorders
Anemia
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
16.7%
1/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Cardiac disorders
Atrial fibrillation
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
0.00%
0/10 • 2 years
16.7%
1/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Psychiatric disorders
Confusion
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
0.00%
0/10 • 2 years
16.7%
1/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Gastrointestinal disorders
Constipation
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
14.3%
1/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Investigations
Creatinine increased
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
16.7%
1/6 • 2 years
0.00%
0/7 • 2 years
General disorders
Death NOS
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
28.6%
2/7 • 2 years
0.00%
0/10 • 2 years
16.7%
1/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
14.3%
1/7 • 2 years
Metabolism and nutrition disorders
Dehydration
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
14.3%
1/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Nervous system disorders
Dizziness
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
14.3%
1/7 • 2 years
0.00%
0/10 • 2 years
16.7%
1/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Respiratory, thoracic and mediastinal disorders
Dyspnea
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
14.3%
1/7 • 2 years
10.0%
1/10 • 2 years
16.7%
1/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
General disorders
Fever
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
16.7%
1/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Musculoskeletal and connective tissue disorders
Generalized muscle weakness
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
14.3%
1/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Metabolism and nutrition disorders
Hypercalcemia
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
0.00%
0/10 • 2 years
16.7%
1/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Metabolism and nutrition disorders
Hyperglycemia
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
14.3%
1/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
16.7%
1/6 • 2 years
0.00%
0/7 • 2 years
Vascular disorders
Hypotension
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
16.7%
1/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Infections and infestations
Joint infection
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
14.3%
1/7 • 2 years
Gastrointestinal disorders
Nausea
25.0%
1/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Renal and urinary disorders
Renal and urinary disorders - Other, specify
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
0.00%
0/10 • 2 years
16.7%
1/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Gastrointestinal disorders
Vomiting
25.0%
1/4 • 2 years
0.00%
0/3 • 2 years
14.3%
1/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years

Other adverse events

Other adverse events
Measure
DOSE FINDING PHASE, Arm A, Cohort 0
n=4 participants at risk
DOSE FINDING PHASE, Arm A, Cohort 0: BYL719 300mg PO, Letrozole 2.5mg PO
DOSE FINDING PHASE, Arm A, Cohort -1
n=3 participants at risk
DOSE FINDING PHASE, Arm A, Cohort -1: BYL719 250 mg PO, Letrozole 2.5mg PO
DOSE FINDING PHASE, Arm B, Cohort 0
n=7 participants at risk
DOSE FINDING PHASE, Arm B, Cohort 0: BYL719 300mg PO, Exemestane 25mg PO
Arm D
n=10 participants at risk
Arm D : Exemestane 25 mg PO + BYL719 MTD: 350mg PO
Dose Finding Phase, Arm C, Cohort 0
n=6 participants at risk
Dose Finding Phase, Arm C, Cohort 0: Letrozole 2.5mg PO daily \& BYL719 250 mg 7days on and 7days off.
Dose Finding Phase, Arm C, Cohort 1
n=6 participants at risk
Dose Finding Phase, Arm C, Cohort 1: Letrozole 2.5mg PO daily \& BYL719 300 mg 7days on and 7days off.
Dose Finding Phase, Arm D, Cohort 0
n=3 participants at risk
Dose Finding Phase, Arm D, Cohort 0: Exemestane 25mg PO daily \& BYL719 250 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 1
n=6 participants at risk
Dose Finding Phase, Arm D, Cohort 1: Exemestane 25mg PO daily \& BYL719 300 mg 5days on and 2days off.
Dose Finding Phase, Arm D, Cohort 2
n=7 participants at risk
Dose Finding Phase, Arm D, Cohort 2: Exemestane 25mg PO daily \& BYL719 350 mg 5days on and 2days off.
Gastrointestinal disorders
Abdominal pain
25.0%
1/4 • 2 years
0.00%
0/3 • 2 years
14.3%
1/7 • 2 years
10.0%
1/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
14.3%
1/7 • 2 years
Investigations
Alkaline phosphatase increased
25.0%
1/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
20.0%
2/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
16.7%
1/6 • 2 years
28.6%
2/7 • 2 years
Cardiac disorders
Electrocardiogram QT corrected interval prolonged
25.0%
1/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Investigations
Lymphocyte count decreased
25.0%
1/4 • 2 years
0.00%
0/3 • 2 years
14.3%
1/7 • 2 years
20.0%
2/10 • 2 years
16.7%
1/6 • 2 years
33.3%
2/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
42.9%
3/7 • 2 years
Skin and subcutaneous tissue disorders
Rash maculo-papular
50.0%
2/4 • 2 years
33.3%
1/3 • 2 years
14.3%
1/7 • 2 years
20.0%
2/10 • 2 years
33.3%
2/6 • 2 years
33.3%
2/6 • 2 years
0.00%
0/3 • 2 years
33.3%
2/6 • 2 years
28.6%
2/7 • 2 years
Investigations
Aspartate aminotransferase increased
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
28.6%
2/7 • 2 years
20.0%
2/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
33.3%
2/6 • 2 years
14.3%
1/7 • 2 years
Investigations
Blood bilirubin increased
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
14.3%
1/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
16.7%
1/6 • 2 years
14.3%
1/7 • 2 years
Metabolism and nutrition disorders
Dehydration
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
14.3%
1/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Metabolism and nutrition disorders
Hyperglycemia
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
14.3%
1/7 • 2 years
20.0%
2/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
28.6%
2/7 • 2 years
Metabolism and nutrition disorders
Hypermagnesemia
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
14.3%
1/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
14.3%
1/7 • 2 years
Gastrointestinal disorders
Vomiting
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
14.3%
1/7 • 2 years
10.0%
1/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Psychiatric disorders
Confusion
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
0.00%
0/10 • 2 years
16.7%
1/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Renal and urinary disorders
Renal and urinary disorders - Other, specify
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
0.00%
0/10 • 2 years
16.7%
1/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Investigations
White blood cell decreased
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
10.0%
1/10 • 2 years
16.7%
1/6 • 2 years
16.7%
1/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
42.9%
3/7 • 2 years
Blood and lymphatic system disorders
Anemia
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
16.7%
1/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Vascular disorders
Hypotension
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
16.7%
1/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Investigations
Neutrophil count decreased
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
10.0%
1/10 • 2 years
0.00%
0/6 • 2 years
16.7%
1/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
42.9%
3/7 • 2 years
Investigations
Alanine aminotransferase increased
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
20.0%
2/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
14.3%
1/7 • 2 years
Musculoskeletal and connective tissue disorders
Back pain
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
10.0%
1/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Vascular disorders
Hot flashes
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
10.0%
1/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
0.00%
0/7 • 2 years
Metabolism and nutrition disorders
Hypokalemia
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
10.0%
1/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
14.3%
1/7 • 2 years
Metabolism and nutrition disorders
Hyponatremia
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
10.0%
1/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
14.3%
1/7 • 2 years
Metabolism and nutrition disorders
Hypophosphatemia
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
10.0%
1/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
14.3%
1/7 • 2 years
Investigations
Lipase increased
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
10.0%
1/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
14.3%
1/7 • 2 years
General disorders
Pain
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
10.0%
1/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
16.7%
1/6 • 2 years
0.00%
0/7 • 2 years
Metabolism and nutrition disorders
Hypocalcemia
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
16.7%
1/6 • 2 years
14.3%
1/7 • 2 years
Metabolism and nutrition disorders
Hyperkalemia
0.00%
0/4 • 2 years
0.00%
0/3 • 2 years
0.00%
0/7 • 2 years
0.00%
0/10 • 2 years
0.00%
0/6 • 2 years
0.00%
0/6 • 2 years
0.00%
0/3 • 2 years
0.00%
0/6 • 2 years
14.3%
1/7 • 2 years

Additional Information

Dr. Sarat Chandarlapaty, MD, PhD

Memorial Sloan Kettering Cancer Center

Phone: 646-888-4311

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place