Trial Outcomes & Findings for Taselisib and Enzalutamide in Treating Patients With Androgen Receptor Positive Triple-Negative Metastatic Breast Cancer (NCT NCT02457910)

NCT ID: NCT02457910

Last Updated: 2022-08-22

Results Overview

CBR is defined as the proportion of patients with a best response of complete response (CR), partial response (PR), or (SD) stable disease per RECIST criteria 1.1. CR: Disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. PR: At least a 30% decrease in the sum of diameters of target lesions. PD: At least a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum on study. In addition, the sum must also demonstrate an absolute increase of at least 5 mm. SD: 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. It is calculated as the mean of binomial distribution.

Recruitment status

TERMINATED

Study phase

PHASE1/PHASE2

Target enrollment

30 participants

Primary outcome timeframe

At 16 weeks

Results posted on

2022-08-22

Participant Flow

13 enrolled in Phase Ib and 17 in phase II

13 in phase Ib and 17 in phase II

Participant milestones

Participant milestones
Measure
PH1b E+T - Level 1 (Cohort 1)
Enzalutamide 160 mg PO daily and 2 mg Taselisib PO daily
PH1b E+T - Level 2 (Cohort 1 and 2)
Enzalutamide 160 mg PO daily and Taselisib 4 mg PO daily
PH1b E+T - Level 3 (Cohort 1)
Enzalutamide 160 mg PO daily and Taselisib 6 mg PO daily
PH1b E+T - Level 4 (Cohort 1)
Enzalutamide 160 mg PO daily and Taselisib 8 mg PO daily
PHII Enzalutamide
Enzalutamide 160mg PO daily
Phase II E+T
Enzalutamide 160mg PO daily and Taselisib 4 mg PO daily
Overall Study
STARTED
3
5
3
2
5
12
Overall Study
COMPLETED
0
0
0
0
0
1
Overall Study
NOT COMPLETED
3
5
3
2
5
11

Reasons for withdrawal

Reasons for withdrawal
Measure
PH1b E+T - Level 1 (Cohort 1)
Enzalutamide 160 mg PO daily and 2 mg Taselisib PO daily
PH1b E+T - Level 2 (Cohort 1 and 2)
Enzalutamide 160 mg PO daily and Taselisib 4 mg PO daily
PH1b E+T - Level 3 (Cohort 1)
Enzalutamide 160 mg PO daily and Taselisib 6 mg PO daily
PH1b E+T - Level 4 (Cohort 1)
Enzalutamide 160 mg PO daily and Taselisib 8 mg PO daily
PHII Enzalutamide
Enzalutamide 160mg PO daily
Phase II E+T
Enzalutamide 160mg PO daily and Taselisib 4 mg PO daily
Overall Study
Withdrawal by Subject
0
0
0
0
0
1
Overall Study
Adverse Event
0
2
1
1
1
3
Overall Study
Disease progression
3
3
1
1
4
6
Overall Study
Other complicating illness
0
0
0
0
0
1
Overall Study
Death
0
0
1
0
0
0

Baseline Characteristics

Taselisib and Enzalutamide in Treating Patients With Androgen Receptor Positive Triple-Negative Metastatic Breast Cancer

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
PH1b E+T - Level 1 (Cohort 1)
n=3 Participants
Enzalutamide and Taselisib taken daily by mouth
PH1b E+T - Level 2 (Cohort 1 and 2)
n=5 Participants
Enzalutamide and Taselisib taken daily by mouth
PH1b E+T - Level 3 (Cohort 1)
n=3 Participants
Enzalutamide and Taselisib taken daily by mouth
PH1b E+T - Level 4 (Cohort 1)
n=2 Participants
Enzalutamide and Taselisib taken daily by mouth
PHII Enzalutamide
n=5 Participants
Enzalutamide taken daily by mouth
Phase II E+T
n=12 Participants
Enzalutamide and Taselisib taken daily by mouth
Total
n=30 Participants
Total of all reporting groups
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
Age, Categorical
<=18 years
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
Age, Categorical
Between 18 and 65 years
2 Participants
n=5 Participants
4 Participants
n=7 Participants
3 Participants
n=5 Participants
2 Participants
n=4 Participants
2 Participants
n=21 Participants
9 Participants
n=8 Participants
22 Participants
n=8 Participants
Age, Categorical
>=65 years
1 Participants
n=5 Participants
1 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
3 Participants
n=21 Participants
3 Participants
n=8 Participants
8 Participants
n=8 Participants
Sex: Female, Male
Female
3 Participants
n=5 Participants
4 Participants
n=7 Participants
3 Participants
n=5 Participants
2 Participants
n=4 Participants
5 Participants
n=21 Participants
12 Participants
n=8 Participants
29 Participants
n=8 Participants
Sex: Female, Male
Male
0 Participants
n=5 Participants
1 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
1 Participants
n=8 Participants
Race (NIH/OMB)
Asian
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
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
Race (NIH/OMB)
Black or African American
1 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
1 Participants
n=8 Participants
Race (NIH/OMB)
White
2 Participants
n=5 Participants
5 Participants
n=7 Participants
3 Participants
n=5 Participants
2 Participants
n=4 Participants
5 Participants
n=21 Participants
11 Participants
n=8 Participants
28 Participants
n=8 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
Race (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
1 Participants
n=8 Participants
1 Participants
n=8 Participants

PRIMARY outcome

Timeframe: At 16 weeks

Population: Evaluable TNBC patients who had at least one cycle of treatment and had their disease re-evaluated at 16 weeks or progressed prior to the 16-week assessment

CBR is defined as the proportion of patients with a best response of complete response (CR), partial response (PR), or (SD) stable disease per RECIST criteria 1.1. CR: Disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. PR: At least a 30% decrease in the sum of diameters of target lesions. PD: At least a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum on study. In addition, the sum must also demonstrate an absolute increase of at least 5 mm. SD: 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. It is calculated as the mean of binomial distribution.

Outcome measures

Outcome measures
Measure
Arm I (Taselisib, Enzalutamide)
n=14 Participants
Patients receive taselisib PO QD on days 1-28 and enzalutamide PO QD on days 9-28 of course 1 and days 1-28 of subsequent courses. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients experiencing unacceptable toxicity due to enzalutamide may continue to receive taselisib.
Arm II (Enzalutamide)
n=5 Participants
Patients receive enzalutamide PO QD on days 1-28. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Upon disease progression, patients may crossover to Arm I.
6mg Taselisib and 160mg Enzalutamide
Patients receive 6mg taselisib PO QD on days 1-28 and 160mg enzalutamide PO QD on days 9-28 of course 1 and days 1-28 of subsequent courses. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients experiencing unacceptable toxicity due to enzalutamide may continue to receive taselisib.
8mg Taselisib and 160mg Enzalutamide
Patients receive8mg taselisib PO QD on days 1-28 and 160mg enzalutamide PO QD on days 9-28 of course 1 and days 1-28 of subsequent courses. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients experiencing unacceptable toxicity due to enzalutamide may continue to receive taselisib.
Clinical Benefit Rate (CBR) - Phase II
0.357 proportion of patients
Interval 0.163 to 0.612
0 proportion of patients
Interval 0.0 to 0.434

PRIMARY outcome

Timeframe: 4 weeks

Population: 13 patients (7 ER+ and 6 TNBC) breast cancer patients

defined as the highest dose tested in which a dose limiting toxicity is experienced by 0 out of 3 or 1 out of 6 patients among the dose levels. Dose limiting toxicity will be graded according to the National Cancer Institute CTCAE version 4.0.

Outcome measures

Outcome measures
Measure
Arm I (Taselisib, Enzalutamide)
n=3 Participants
Patients receive taselisib PO QD on days 1-28 and enzalutamide PO QD on days 9-28 of course 1 and days 1-28 of subsequent courses. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients experiencing unacceptable toxicity due to enzalutamide may continue to receive taselisib.
Arm II (Enzalutamide)
n=5 Participants
Patients receive enzalutamide PO QD on days 1-28. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Upon disease progression, patients may crossover to Arm I.
6mg Taselisib and 160mg Enzalutamide
n=3 Participants
Patients receive 6mg taselisib PO QD on days 1-28 and 160mg enzalutamide PO QD on days 9-28 of course 1 and days 1-28 of subsequent courses. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients experiencing unacceptable toxicity due to enzalutamide may continue to receive taselisib.
8mg Taselisib and 160mg Enzalutamide
n=3 Participants
Patients receive8mg taselisib PO QD on days 1-28 and 160mg enzalutamide PO QD on days 9-28 of course 1 and days 1-28 of subsequent courses. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients experiencing unacceptable toxicity due to enzalutamide may continue to receive taselisib.
Maximum Tolerated Dose (MTD) of Taselisib Combined With 160mg Enzalutamide - Phase I
0 DLTs
0 DLTs
0 DLTs
0 DLTs

SECONDARY outcome

Timeframe: Time from course 1, day 1 until objective tumor progression, assessed up to 3 years

Population: Evaluable Androgen Receptor Positive Triple Negative Metastatic Breast Cancer patients that received enzalutamide + taselisib regardless of dose assignment. It is pre-specified by the study protocol to combined groups of TN MBC patients who received both drugs for overall PFS.

The PFS time is defined as the time from treatment start to progression or death (whichever comes first), and those alive without progression were censored at the last date of follow up. PFS will be estimated using the Kaplan-Meier method. The median with 95% confidence intervals will be reported.

Outcome measures

Outcome measures
Measure
Arm I (Taselisib, Enzalutamide)
n=14 Participants
Patients receive taselisib PO QD on days 1-28 and enzalutamide PO QD on days 9-28 of course 1 and days 1-28 of subsequent courses. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients experiencing unacceptable toxicity due to enzalutamide may continue to receive taselisib.
Arm II (Enzalutamide)
Patients receive enzalutamide PO QD on days 1-28. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Upon disease progression, patients may crossover to Arm I.
6mg Taselisib and 160mg Enzalutamide
Patients receive 6mg taselisib PO QD on days 1-28 and 160mg enzalutamide PO QD on days 9-28 of course 1 and days 1-28 of subsequent courses. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients experiencing unacceptable toxicity due to enzalutamide may continue to receive taselisib.
8mg Taselisib and 160mg Enzalutamide
Patients receive8mg taselisib PO QD on days 1-28 and 160mg enzalutamide PO QD on days 9-28 of course 1 and days 1-28 of subsequent courses. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients experiencing unacceptable toxicity due to enzalutamide may continue to receive taselisib.
Overall Progression-Free Survival (PFS) of Patients Treated With Enzalutamide and Taselisib
3.4 months
Interval 2.1 to 7.2

SECONDARY outcome

Timeframe: Approximately 4 months

Population: Data was not collected because taselisib is no longer being developed commercially.

Pharmacokinetic sampling will occur in the phase Ib portion and in 10 patients in the phase II portion

Outcome measures

Outcome data not reported

Adverse Events

Taselisib 2 mg

Serious events: 0 serious events
Other events: 3 other events
Deaths: 2 deaths

Taselisib 4 mg

Serious events: 2 serious events
Other events: 5 other events
Deaths: 4 deaths

Taselisib 6 mg

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

Taselisib 8 mg

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

Enzalutamide

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

Enzalutamide + Taselisib

Serious events: 10 serious events
Other events: 12 other events
Deaths: 5 deaths

Cross-Over

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

Serious adverse events

Serious adverse events
Measure
Taselisib 2 mg
n=3 participants at risk
Patients receive taselisib PO QD on days 1-28 and enzalutamide PO QD on days 9-28 of course 1 and days 1-28 of subsequent courses. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients experiencing unacceptable toxicity due to enzalutamide may continue to receive taselisib.
Taselisib 4 mg
n=5 participants at risk
Patients receive taselisib PO QD on days 1-28 and enzalutamide PO QD on days 9-28 of course 1 and days 1-28 of subsequent courses. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients experiencing unacceptable toxicity due to enzalutamide may continue to receive taselisib.
Taselisib 6 mg
n=3 participants at risk
Patients receive taselisib PO QD on days 1-28 and enzalutamide PO QD on days 9-28 of course 1 and days 1-28 of subsequent courses. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients experiencing unacceptable toxicity due to enzalutamide may continue to receive taselisib.
Taselisib 8 mg
n=2 participants at risk
Patients receive taselisib PO QD on days 1-28 and enzalutamide PO QD on days 9-28 of course 1 and days 1-28 of subsequent courses. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients experiencing unacceptable toxicity due to enzalutamide may continue to receive taselisib.
Enzalutamide
n=2 participants at risk
Patients receive enzalutamide PO QD on days 1-28. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Upon disease progression, patients may crossover to receive Enzalutamide + Taselisib
Enzalutamide + Taselisib
n=12 participants at risk
Patients receive enzalutamide PO QD starting on day 1 of cycle 1, and will receive PO QD Taselisib on day 1 of cycle 2.
Cross-Over
n=3 participants at risk
Upon progression of disease, patients on the enzalutamide only arm will be allowed to crossover to enzalutamide + taselisib (must begin no later than 21 days after the clinic visit at which disease progression is determined) Enzalutamide and Taselisib will be taken PO QD
Respiratory, thoracic and mediastinal disorders
Pleural effusion
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/12 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
Musculoskeletal and connective tissue disorders
Back pain
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Gastrointestinal disorders
Colitis
0.00%
0/3 • Approximately 42 months
20.0%
1/5 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/12 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Neoplasms benign
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Psychiatric disorders
Confusion
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
16.7%
2/12 • Number of events 2 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
General disorders
Fever
0.00%
0/3 • Approximately 42 months
20.0%
1/5 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
41.7%
5/12 • Number of events 5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Skin and subcutaneous tissue disorders
Rash maculo-papular
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
50.0%
6/12 • Number of events 6 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Vascular disorders
Hypotension
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Blood and lymphatic system disorders
Febrile neutropenia
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Gastrointestinal disorders
Nausea
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
General disorders
Diarrhea
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Cardiac disorders
Heart failure
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
0.00%
0/12 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
Respiratory, thoracic and mediastinal disorders
Dyspnea
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
0.00%
0/12 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Cardiac disorders
Left ventricular systolic dysfunction
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/12 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
General disorders
Fatigue
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
16.7%
2/12 • Number of events 2 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Metabolism and nutrition disorders
Anorexia
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
16.7%
2/12 • Number of events 2 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Infections and infestations
Acute appendicitis
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months

Other adverse events

Other adverse events
Measure
Taselisib 2 mg
n=3 participants at risk
Patients receive taselisib PO QD on days 1-28 and enzalutamide PO QD on days 9-28 of course 1 and days 1-28 of subsequent courses. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients experiencing unacceptable toxicity due to enzalutamide may continue to receive taselisib.
Taselisib 4 mg
n=5 participants at risk
Patients receive taselisib PO QD on days 1-28 and enzalutamide PO QD on days 9-28 of course 1 and days 1-28 of subsequent courses. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients experiencing unacceptable toxicity due to enzalutamide may continue to receive taselisib.
Taselisib 6 mg
n=3 participants at risk
Patients receive taselisib PO QD on days 1-28 and enzalutamide PO QD on days 9-28 of course 1 and days 1-28 of subsequent courses. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients experiencing unacceptable toxicity due to enzalutamide may continue to receive taselisib.
Taselisib 8 mg
n=2 participants at risk
Patients receive taselisib PO QD on days 1-28 and enzalutamide PO QD on days 9-28 of course 1 and days 1-28 of subsequent courses. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients experiencing unacceptable toxicity due to enzalutamide may continue to receive taselisib.
Enzalutamide
n=2 participants at risk
Patients receive enzalutamide PO QD on days 1-28. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Upon disease progression, patients may crossover to receive Enzalutamide + Taselisib
Enzalutamide + Taselisib
n=12 participants at risk
Patients receive enzalutamide PO QD starting on day 1 of cycle 1, and will receive PO QD Taselisib on day 1 of cycle 2.
Cross-Over
n=3 participants at risk
Upon progression of disease, patients on the enzalutamide only arm will be allowed to crossover to enzalutamide + taselisib (must begin no later than 21 days after the clinic visit at which disease progression is determined) Enzalutamide and Taselisib will be taken PO QD
Gastrointestinal disorders
Nausea
66.7%
2/3 • Number of events 3 • Approximately 42 months
40.0%
2/5 • Number of events 4 • Approximately 42 months
66.7%
2/3 • Number of events 4 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
100.0%
2/2 • Number of events 2 • Approximately 42 months
58.3%
7/12 • Number of events 7 • Approximately 42 months
100.0%
3/3 • Number of events 3 • Approximately 42 months
Gastrointestinal disorders
Diarrhea
33.3%
1/3 • Number of events 1 • Approximately 42 months
80.0%
4/5 • Number of events 9 • Approximately 42 months
33.3%
1/3 • Number of events 3 • Approximately 42 months
100.0%
2/2 • Number of events 4 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
33.3%
4/12 • Number of events 4 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
Gastrointestinal disorders
Vomitting
0.00%
0/3 • Approximately 42 months
80.0%
4/5 • Number of events 4 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
33.3%
4/12 • Number of events 4 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Gastrointestinal disorders
Gastroesophageal reflux disease
66.7%
2/3 • Number of events 3 • Approximately 42 months
100.0%
5/5 • Number of events 5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/12 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Gastrointestinal disorders
Dyspepsia
33.3%
1/3 • Number of events 1 • Approximately 42 months
20.0%
1/5 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
16.7%
2/12 • Number of events 2 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
Gastrointestinal disorders
Mucositis oral
66.7%
2/3 • Number of events 2 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
Gastrointestinal disorders
Constipation
0.00%
0/3 • Approximately 42 months
40.0%
2/5 • Number of events 2 • Approximately 42 months
33.3%
1/3 • Number of events 3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
16.7%
2/12 • Number of events 2 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Gastrointestinal disorders
Abdominal pain
0.00%
0/3 • Approximately 42 months
20.0%
1/5 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
50.0%
1/2 • Number of events 2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
Metabolism and nutrition disorders
Hyperglycemia
0.00%
0/3 • Approximately 42 months
100.0%
5/5 • Number of events 15 • Approximately 42 months
100.0%
3/3 • Number of events 3 • Approximately 42 months
100.0%
2/2 • Number of events 2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
25.0%
3/12 • Number of events 5 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
Metabolism and nutrition disorders
Anorexia
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
33.3%
1/3 • Number of events 2 • Approximately 42 months
50.0%
1/2 • Number of events 2 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
33.3%
4/12 • Number of events 4 • Approximately 42 months
66.7%
2/3 • Number of events 2 • Approximately 42 months
Metabolism and nutrition disorders
Hypoalbuminemia
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
0.00%
0/12 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
Metabolism and nutrition disorders
Dehydration
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
16.7%
2/12 • Number of events 2 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Metabolism and nutrition disorders
Hypomagnesemia
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/12 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
Metabolism and nutrition disorders
Hypermagnesemia
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Metabolism and nutrition disorders
Hypokalemia
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/12 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Metabolism and nutrition disorders
Hyperkalemia
0.00%
0/3 • Approximately 42 months
20.0%
1/5 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/12 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Metabolism and nutrition disorders
Hypernatremia
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 2 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Metabolism and nutrition disorders
Hyponatremia
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/12 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
General disorders
Fatigue
66.7%
2/3 • Number of events 4 • Approximately 42 months
100.0%
5/5 • Number of events 12 • Approximately 42 months
100.0%
3/3 • Number of events 6 • Approximately 42 months
100.0%
2/2 • Number of events 2 • Approximately 42 months
100.0%
2/2 • Number of events 7 • Approximately 42 months
83.3%
10/12 • Number of events 21 • Approximately 42 months
100.0%
3/3 • Number of events 3 • Approximately 42 months
General disorders
Fever
0.00%
0/3 • Approximately 42 months
20.0%
1/5 • Number of events 1 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
50.0%
6/12 • Number of events 10 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
General disorders
Limb edema
33.3%
1/3 • Number of events 1 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
66.7%
2/3 • Number of events 2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
66.7%
2/3 • Number of events 2 • Approximately 42 months
Skin and subcutaneous tissue disorders
Rash maculo-papular
66.7%
2/3 • Number of events 2 • Approximately 42 months
40.0%
2/5 • Number of events 2 • Approximately 42 months
33.3%
1/3 • Number of events 2 • Approximately 42 months
100.0%
2/2 • Number of events 4 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
33.3%
4/12 • Number of events 5 • Approximately 42 months
66.7%
2/3 • Number of events 2 • Approximately 42 months
Skin and subcutaneous tissue disorders
Rash acneiform
0.00%
0/3 • Approximately 42 months
40.0%
2/5 • Number of events 4 • Approximately 42 months
66.7%
2/3 • Number of events 3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
16.7%
2/12 • Number of events 3 • Approximately 42 months
66.7%
2/3 • Number of events 3 • Approximately 42 months
Skin and subcutaneous tissue disorders
Pruritus
66.7%
2/3 • Number of events 2 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 2 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
Skin and subcutaneous tissue disorders
Dry Skin
33.3%
1/3 • Number of events 1 • Approximately 42 months
20.0%
1/5 • Number of events 1 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/12 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Investigations
Aspartate aminotransferase increased
33.3%
1/3 • Number of events 1 • Approximately 42 months
40.0%
2/5 • Number of events 2 • Approximately 42 months
66.7%
2/3 • Number of events 2 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
16.7%
2/12 • Number of events 4 • Approximately 42 months
66.7%
2/3 • Number of events 3 • Approximately 42 months
Investigations
Alanine amininotransferase increased
33.3%
1/3 • Number of events 1 • Approximately 42 months
20.0%
1/5 • Number of events 1 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
33.3%
1/3 • Number of events 2 • Approximately 42 months
Investigations
Alkaline phosphatase increased
0.00%
0/3 • Approximately 42 months
60.0%
3/5 • Number of events 3 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
100.0%
2/2 • Number of events 2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
16.7%
2/12 • Number of events 2 • Approximately 42 months
33.3%
1/3 • Number of events 2 • Approximately 42 months
Investigations
Weight loss
66.7%
2/3 • Number of events 2 • Approximately 42 months
20.0%
1/5 • Number of events 2 • Approximately 42 months
66.7%
2/3 • Number of events 3 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/12 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Investigations
White blood cell decreased
33.3%
1/3 • Number of events 5 • Approximately 42 months
40.0%
2/5 • Number of events 5 • Approximately 42 months
33.3%
1/3 • Number of events 3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/12 • Approximately 42 months
33.3%
1/3 • Number of events 2 • Approximately 42 months
Investigations
Lymphocyte count decreased
0.00%
0/3 • Approximately 42 months
40.0%
2/5 • Number of events 3 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/12 • Approximately 42 months
66.7%
2/3 • Number of events 3 • Approximately 42 months
Investigations
Neutrophil count decreased
33.3%
1/3 • Number of events 2 • Approximately 42 months
40.0%
2/5 • Number of events 2 • Approximately 42 months
33.3%
1/3 • Number of events 2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Investigations
Platelet count decreased
0.00%
0/3 • Approximately 42 months
20.0%
1/5 • Number of events 1 • Approximately 42 months
33.3%
1/3 • Number of events 3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Gastrointestinal disorders
Headache
66.7%
2/3 • Number of events 2 • Approximately 42 months
40.0%
2/5 • Number of events 2 • Approximately 42 months
66.7%
2/3 • Number of events 2 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
33.3%
4/12 • Number of events 5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Nervous system disorders
Dizziness
33.3%
1/3 • Number of events 1 • Approximately 42 months
20.0%
1/5 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
16.7%
2/12 • Number of events 2 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Nervous system disorders
Dysgeusia
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
50.0%
1/2 • Number of events 2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Nervous system disorders
Peripheral sensory neuropathy
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
Musculoskeletal and connective tissue disorders
Back pain
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
16.7%
2/12 • Number of events 3 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
Blood and lymphatic system disorders
Anemia
33.3%
1/3 • Number of events 1 • Approximately 42 months
100.0%
5/5 • Number of events 5 • Approximately 42 months
100.0%
3/3 • Number of events 3 • Approximately 42 months
100.0%
2/2 • Number of events 2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
33.3%
4/12 • Number of events 6 • Approximately 42 months
66.7%
2/3 • Number of events 3 • Approximately 42 months
Blood and lymphatic system disorders
Febrile Neutropenia
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
Psychiatric disorders
Anxiety
66.7%
2/3 • Number of events 4 • Approximately 42 months
40.0%
2/5 • Number of events 2 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
Psychiatric disorders
Agitation
0.00%
0/3 • Approximately 42 months
20.0%
1/5 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/12 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Psychiatric disorders
Confusion
33.3%
1/3 • Number of events 1 • Approximately 42 months
20.0%
1/5 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/12 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Infections and infestations
Urinary tract infection
33.3%
1/3 • Number of events 1 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Respiratory, thoracic and mediastinal disorders
Cough
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
66.7%
2/3 • Number of events 2 • Approximately 42 months
50.0%
1/2 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
66.7%
2/3 • Number of events 2 • Approximately 42 months
Respiratory, thoracic and mediastinal disorders
Nasal congestion
33.3%
1/3 • Number of events 1 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
8.3%
1/12 • Number of events 1 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
Vascular disorders
Hypertension
66.7%
2/3 • Number of events 4 • Approximately 42 months
40.0%
2/5 • Number of events 4 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
16.7%
2/12 • Number of events 6 • Approximately 42 months
33.3%
1/3 • Number of events 1 • Approximately 42 months
Vascular disorders
Hypotension
0.00%
0/3 • Approximately 42 months
0.00%
0/5 • Approximately 42 months
0.00%
0/3 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
0.00%
0/2 • Approximately 42 months
16.7%
2/12 • Number of events 2 • Approximately 42 months
0.00%
0/3 • Approximately 42 months

Additional Information

Vandana Abramson, MD

Vanderbilt University Medical Center

Phone: (615)936-8422

Results disclosure agreements

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