This phase II study assesses the efficacy of the combination of olaparib with durvalumab, selumetinib, or capivasertib or ceralasertib alone in the treatment of patients with metastatic triple negative breast cancer (TNBC). Olaparib may stop growth of tumor cells by inhibiting some of the enzymes (ADP ribose polymerase \[PARP\]) needed for cell growth. Durvalumab, a monoclonal antibody, inhibits the growth and spread of tumors by stimulating the patient's antitumor immune response. Selumetinib, capivasertib, and ceralasertib are inhibitor drugs that may stop the growth of tumor cells by blocking some of the enzymes (MEK, AKT, ATR) needed for cell growth. Giving olaparib together with durvalumab, selumetinib, or capivasertib or giving ceralasertib alone may provide an effective method to treat patients with metastatic triple negative breast cancer.
PRIMARY OBJECTIVE: I. Assess overall response to treatment. SECONDARY OBJECTIVES: I. Assess participant benefit from treatment. II. Determine the time to disease progression following response to study therapy. III. Determine time to first disease progression or death of participants enrolled on the study. IV. Determine survival of participants enrolled on the study. V. Assess safety and tolerability of the proposed therapy. EXPLORATORY OBJECTIVES: I. To assess a change in quality of life (QOL) as measured by European Organization for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire Core 30 (QLQ-C30) in each treatment arm. II. To assess a change in QOL as measured by Breast Cancer-Specific Quality of Life Questionnaire (QLQ-BR23) in each treatment arm. III. Examine response rates depending on tumor characteristics. IV. Identify predictive biomarkers of sensitivity to therapy. V. Identify emerging mechanism of resistance to therapy. VI. Determine changes in tumor cells and the tumor microenvironment induced by PARP inhibitors. OUTLINE: This is an open-label, multi-arm phase II study of olaparib in combination with durvalumab, selumetinib, or capivasertib, or ceralasertib monotherapy. LEAD IN: Patients with biopsy proven TNBC undergo a pre-treatment biopsy. At the 2 week mark, patients then undergo a repeat on-treatment biopsy. Patients also receive olaparib orally (PO) twice daily (BID) on days 1-28 for one cycle. Treatment repeats every 28 days for up to 1 cycle in the absence of disease progression or unacceptable toxicity. Patients are then assigned to 1 of 4 arms based on predefined molecular tumor characteristics. ARM I: Patients receive olaparib PO BID on days 1-28 of each cycle and durvalumab intravenously (IV) over 1 hour on day 1 of each cycle. Treatment repeats every 28 days for up to 12 cycles in the absence of disease progression or unacceptable toxicity. Patients deriving clinical benefit from treatment may, at the investigator's discretion and in the absence of disease progression or unacceptable toxicity, continue on therapy beyond the planned 13 cycles. ARM II: Patients receive olaparib PO BID on days 1-28 of each cycle and selumetinib PO BID on days 1-28 of each cycle. Treatment repeats every 28 days for up to 12 cycles in the absence of disease progression or unacceptable toxicity. Patients deriving clinical benefit from treatment may, at the investigator's discretion and in the absence of disease progression or unacceptable toxicity, continue on therapy beyond the planned 13 cycles. ARM III: Patients receive olaparib PO BID on days 1-28 of each cycle and capivasertib PO BID 4 days on and 3 days off of each cycle. Treatment repeats every 28 days for up to 12 cycles in the absence of disease progression or unacceptable toxicity. Patients deriving clinical benefit from treatment may, at the investigator's discretion and in the absence of disease progression or unacceptable toxicity, continue on therapy beyond the planned 13 cycles. ARM IV: Patients receive ceralasertib PO BID on days 1-14 of each cycle. Treatment repeats every 28 days for up to 12 cycles in the absence of disease progression or unacceptable toxicity. Patients deriving clinical benefit from treatment may, at the investigator's discretion and in the absence of disease progression or unacceptable toxicity, continue on therapy beyond the planned 13 cycles. At the completion of all on-study procedures, patients are followed up every 6 months for disease and survival outcomes up to 1 year. Patients will be asked to submit an optional tumor biopsy in the event of disease progression.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
24
Undergo biopsy
Given PO (orally)
Given PO (orally)
Given IV (infusion)
Given PO (orally)
Ancillary studies
Given PO (orally)
OHSU Knight Cancer Institute
Portland, Oregon, United States
Objective Response Rate (ORR)
Using the efficacy analysis set, the estimate of ORR will be measured independently for each treatment arm and reported with 95% exact confidence interval. Participants who, within their respective treatment arm, achieve a complete response (CR) or a partial response (PR) that is confirmed on a second scan at least 4 weeks later on the current protocol will be qualified as achieving a response, and will count towards the ORR measurement.
Time frame: End of treatment (Up to 24 months)
Clinical Benefit Rate (CBR)
An estimate of CBR will be measured independently for each treatment arm and reported with 95% exact confidence interval. Participants who, within their respective treatment arm, achieve a CR, PR, or stable disease (SD) for at least 6 months on the current protocol will be qualified as deriving benefit from therapy, and will count towards the CBR measurement.
Time frame: End of treatment (Up to 24 months)
Duration of Response (DOR)
The duration of overall response is measured from the time measurement criteria are met for CR or PR (whichever is first recorded) until the first date that recurrent or progressive disease is objectively documented taking as reference for progressive disease the smallest measurements recorded since the treatment started. The duration of overall CR is measured from the time measurement criteria are first met for CR until the first date that progressive disease is objectively documented. If a participant dies, irrespective of cause, without documentation of recurrent or progressive disease beforehand, then the date of death will be used to denote the response end date.
Time frame: Duration of response was calculated from date of PR/CR (whichever occurred earlier) to EOT.
Progression-free Survival (PFS)
PFS is defined as the time after having completed at least one cycle of olaparib monotherapy to the first of either recurrence or relapse (anywhere in the body) or death at the time of last follow-up at 12-months. The estimated distribution of the PFS for each treatment will be plotted using Kaplan Meier curves and reported with median survival and 95% confidence intervals if available.
Time frame: Progression or death (any cause) up to 1 year post treatment
Overall Survival (OS)
OS is defined as the time after having completed at least one cycle of olaparib monotherapy up to 6 months following the completion of on-study treatment to the date of death or last follow-up at 12 months. The estimated distribution of the OS for each treatment will be plotted using Kaplan Meier curves and reported with median survival and 95% confidence intervals if available.
Time frame: Death (any cause) up to 1 year post treatment
Incidence of Grade 3+ Acute Toxicity: # of Occurrences
Will be assessed by Common Terminology Criteria for Adverse Events (CTCAE) version (v) 5.0. The incidence of having grade 3+ acute toxicity will be determined for participants with triple negative breast cancer (TNBC) that received at least one dose of olaparib and/or durvalumab., selumetinib, capivasertib, or ceralasertib. The 95% confidence interval will be reported with the point estimate of toxicity rate.
Time frame: Up to 3 months post treatment
Incidence of Grade 3+ Acute Toxicity: # of Participants
Will be assessed by Common Terminology Criteria for Adverse Events (CTCAE) version (v) 5.0. The incidence of having grade 3+ acute toxicity will be determined for participants with triple negative breast cancer (TNBC) that received at least one dose of olaparib and/or durvalumab., selumetinib, capivasertib, or ceralasertib. The 95% confidence interval will be reported with the point estimate of toxicity rate.
Time frame: Up to 3 months post treatment
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