Study of Neoadjuvant Olaparib Monotherapy and Olaparib and Durvalumab Combination in HER2 Negative BRCAm Breast Cancer

Breast Cancer Clinical Trial

— OlympiaN  

Official title:

A Phase II, Multicentre, Open-Label Study to Assess the Efficacy and Safety of Olaparib Monotherapy and Olaparib Plus Durvalumab Combination as Neoadjuvant Therapy in Patients With BRCA Mutations and Early Stage HER2-Negative Breast Cancer

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT05498155
• Other study ID #: D931CC00001
• Secondary ID: 2021-005231-22
• Status: Active, not recruiting
• Phase: Phase 2
• Start date: November 7, 2022
• Est. completion date: December 31, 2026

Study information

• Verified date: May 2024
• Source: AstraZeneca
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This study to learn more about olaparib and olaparib plus durvalumab combination therapy and also to better understand the studied disease, breast cancer, and associated health problems.

Olaparib is a type of drug called a PARP (poly [adenosine diphosphate-ribose] polymerase) inhibitor. PARP inhibitors can destroy cancer cells that are not good at repairing DNA damage. Olaparib is also approved by US Food and Drug Administration (FDA), European Medicines Agency (EMA) and in other countries for treating women with BRCA-mutated, human epidermal growth factor receptor 2 (HER2)-negative metastatic breast cancer.

Durvalumab is a type of anticancer drug called immunotherapy that targets cancer cells by blocking the signal that prevents the immune system from seeing the cancer cell. Your immune system can then attack and kill the cancer cells. Durvalumab is approved by the FDA and the EMA for the treatment of patients with locally advanced non-small cell lung cancer after receiving chemoradiation therapy and extensive-stage small cell lung cancer in combination with chemotherapy.

Some parts of this study are experimental, which means that durvalumab and the combination of olaparib and durvalumab are still in the development stage for the treatment of breast cancer, and they are not approved for treatment of breast cancer, except for use in research studies like this.

Description:

The investigation of olaparib as monotherapy or olaparib in combination with durvalumab in patients with early stage BRCAm, oestrogen receptor (ER)-negative or ER-low, human epidermal growth factor receptor 2 (HER2)-negative breast cancer who are candidates for neoadjuvant therapy supports the ongoing effort to identify novel agents and new drug combinations that can improve pathological complete response (pCR) rates and event-free survival (EFS). In patients at a lower risk (T1b-c/N0) of disease recurrence and a higher chance for cure, monotherapy olaparib may provide adequate neoadjuvant treatment. In contrast, monotherapy olaparib may be inadequate neoadjuvant treatment for those patients at a higher risk (T2/N0 or T1/N1) of recurrence, and the addition of an immune checkpoint inhibitor (ICI) to the neoadjuvant regimen may improve long-term outcomes as was seen in KEYNOTE-522 and GeparNuevo. However, the risk of irreversible immune-mediated adverse events (AEs) of the endocrine system due to ICI use supports the use of ICIs only in the cohort of patients at higher risk for disease recurrence. For both the lower and higher risk groups, the study treatments have the potential for the development of de-escalation strategies in this disease setting where traditional chemotherapy regimens may be avoided altogether.

While assessment of the efficacy of the combination of olaparib and durvalumab is ongoing, there are sufficient safety data available to develop a safety and tolerability profile for the combination.

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 56
• Est. completion date: December 31, 2026
• Est. primary completion date: May 2, 2024
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 130 Years

Eligibility

Inclusion Criteria:

• Males or Females =18 years

• Minimum body weight of 30 kg

• Capable of giving signed informed consent.

• Male and Female participants of childbearing potential must use effective methods of contraception

• Histologically confirmed, newly diagnosed, primary, operable, nonmetastatic invasive breast cancer with the following characteristics:

--ER-negative or ER-low defined as IHC nuclear staining =10%

• HER2-negative (not eligible for anti-HER2 therapy) defined as:

• IHC 0, 1+ without in situ hybridization OR

• In situ hybridization non-amplified with ratio less than 2.0 OR

• In situ hybridization average HER2 copy number < 6 signals/cells

• Clinical TNM staging (per AJCC 8th Edition) as follows:

• T1b (>5 mm but =10 mm), N0, no known metastases (M0 or MX); OR

• T1c (>10 mm but =20 mm), N0, no known metastases (M0 or MX); OR

• T1 (>1 mm but =20 mm), N1, no known metastases (M0 or MX); OR

• T2 (>20 mm but =50 mm), N0, no known metastases (M0 or MX).).

• Documented deleterious or suspected deleterious mutation in BRCA1 or BRCA2 from local BRCA testing using either a germline or tumour test.

• Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1

• Participants must have adequate organ and bone marrow function

• Participant must be willing to undergo a baseline research biopsy prior to start of study treatment.

• Participant must be willing to have any leftover tumour tissue/FFPE from the diagnostic biopsy submitted for research purposes, if available.

Exclusion Criteria:

• Any evidence of other diseases (such as severe or uncontrolled systemic diseases or active, uncontrolled infections, including but not limited to, uncontrolled ventricular arrhythmia, uncontrolled hypertension, recent [within 3 months] myocardial infarction, uncontrolled major seizure disorder, renal transplant, active bleeding diseases, unstable spinal cord compression, superior vena cava syndrome, extensive interstitial bilateral lung disease on High Resolution Computed Tomography scan

• Refractory nausea and vomiting, chronic gastrointestinal disease likely to interfere with absorption of the study medication, inability to swallow the formulated product

• History of another primary malignancy except for malignancy treated with curative intent with no known active disease for =5 years before the first dose of study intervention and of low potential risk for recurrence

• Participants with MDS or AML

• For higher risk (Cohort B) participants only: Active or prior documented autoimmune or inflammatory disorders (including inflammatory bowel disease [eg, colitis or Crohn's disease], diverticulitis [with the exception of diverticulosis], systemic lupus erythematosus, sarcoidosis, granulomatosis with polyangiitis, Graves' disease, rheumatoid arthritis, hypophysitis, uveitis, etc), autoimmune pneumonitis, and autoimmune myocarditis

• Known active hepatitis infection, positive hepatitis C antibody, hepatitis B virus surface antigen or hepatitis B virus core antibody

• Known to have tested positive for human immunodeficiency virus unless currently on effective anti-retroviral therapy with an undetectable viral load within 6 months

• History of arrhythmia (multifocal premature ventricular contractions, bigeminy, trigeminy, ventricular tachycardia), which is symptomatic or requires treatment (Common Terminology Criteria for Adverse Events [CTCAE] Grade 3), symptomatic or uncontrolled atrial fibrillation despite treatment, or asymptomatic sustained ventricular tachycardia

• Participant must not have had any prior treatment for the current breast cancer, including surgery, chemotherapy, hormonal therapy, radiation, or experimental therapy

• For higher risk (Cohort B) participants only: Prior exposure to anti-PD1, anti-PD-L1, or anti-CTLA4 agents (ICIs); OR an agent directed to other co-inhibitory or co-stimulatory T-cell receptors

• Any concurrent anticancer treatment

• Major surgical procedure (excluding placement of vascular access, local surgery of isolated lesions, or diagnostic staging) within 2 weeks of the first dose of study intervention

• For higher risk (Cohort B) participants only: Current or prior use of immunosuppressive medication within 14 days before the first dose of durvalumab.

• Concomitant use of:

• Known strong cytochrome P450 (CYP3A) inhibitors or moderate CYP3A inhibitors within 2 weeks prior to first dose of study intervention

• Known strong CYP3A inducers or moderate CYP3A inducers .The required washout period prior to starting study therapy is 5 weeks for enzalutamide or phenobarbital and 3 weeks for other agents

Related Conditions & MeSH terms

• Breast Cancer
• Breast Neoplasms

Intervention

Drug:
• Neoadjuvant Olaparib monotherapy group
Neoadjuvant olaparib monotherapy (300 mg BID) for four to six 28-day cycles.

Combination Product:
• Neoadjuvant combination therapy with olaparib plus durvalumab
Neoadjuvant combination therapy with olaparib (300 mg BID) plus durvalumab (1500 mg IV Q4W) for four to six 28-day cycles.

Locations

Country	Name	City	State
Australia	Research Site	Adelaide
Australia	Research Site	Melbourne
Austria	Research Site	Innsbruck
Austria	Research Site	Rankweil
Austria	Research Site	Salzburg
Austria	Research Site	Vienna
Belgium	Research Site	Bruxelles
Belgium	Research Site	Liège
Germany	Research Site	Augsburg, BY
Germany	Research Site	Düsseldorf
Germany	Research Site	Erlangen
Germany	Research Site	Essen
Germany	Research Site	Hamburg
Germany	Research Site	Hannover
Germany	Research Site	Heidelberg
Germany	Research Site	Köln
Germany	Research Site	Leipzig
Germany	Research Site	Muenster
Germany	Research Site	Munchen
Israel	Research Site	Beer Sheva
Israel	Research Site	Hadera
Israel	Research Site	Jerusalem
Israel	Research Site	Kfar Saba
Israel	Research Site	Petah Tikva
Israel	Research Site	Ramat Gan
Israel	Research Site	Rehovot
Israel	Research Site	Tel Aviv
Italy	Research Site	Bergamo
Italy	Research Site	Bologna
Italy	Research Site	Meldola
Italy	Research Site	Modena
Italy	Research Site	Napoli
Italy	Research Site	Novara
Italy	Research Site	Padova
Italy	Research Site	Roma
Italy	Research Site	Rozzano
Spain	Research Site	A Coruña
Spain	Research Site	Barcelona
Spain	Research Site	Barcelona
Spain	Research Site	Caceres
Spain	Research Site	Hospitalet deLlobregat
Spain	Research Site	Lérida
Spain	Research Site	Madrid
Spain	Research Site	Madrid
Spain	Research Site	Malaga
Spain	Research Site	Sevilla
Spain	Research Site	Sevilla
Spain	Research Site	Valencia
United Kingdom	Research Site	Nottingham
United States	Research Site	Boston	Massachusetts
United States	Research Site	Cincinnati	Ohio
United States	Research Site	Gilbert	Arizona
United States	Research Site	Grand Junction	Colorado
United States	Research Site	Greeley	Colorado
United States	Research Site	Harrisburg	Pennsylvania
United States	Research Site	Long Beach	California
United States	Research Site	Loveland	Colorado
United States	Research Site	Madison	Wisconsin
United States	Research Site	Nashville	Tennessee
United States	Research Site	Philadelphia	Pennsylvania
United States	Research Site	Pittsburgh	Pennsylvania
United States	Research Site	Portland	Oregon

Sponsors (1)

Lead Sponsor	Collaborator
AstraZeneca

Countries where clinical trial is conducted

United States,  Australia,  Austria,  Belgium,  Germany,  Israel,  Italy,  Spain,  United Kingdom, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	To evaluate the efficacy, measured by pCR (pathological complete response) rate, of olaparib monotherapy and olaparib plus durvalumab combination therapy, as assessed by central pathology review.	pCR is defined as ypT0/Tis ypN0 (ie, no invasive residual in breast and the axillary lymph nodes on evaluation of the complete resected breast specimen and all sampled regional lymph nodes) following completion of neoadjuvant systemic therapy.	Approx. 4 to 6 months
Secondary	To evaluate the efficacy, measured by pCR rate, of olaparib monotherapy and olaparib plus durvalumab combination therapy as assessed by local pathology review	pCR is defined as ypT0/Tis ypN0 (ie, no invasive residual in breast and the axillary lymph nodes on evaluation of the complete resected breast specimen and all sampled regional lymph nodes) following completion of neoadjuvant systemic therapy.	Approx. 4 to 6 months
Secondary	To evaluate the efficacy, measured by RCB (residual cancer burden), of olaparib monotherapy and olaparib plus durvalumab combination therapy as assessed by central pathology review	RCB index value using 6 variables to categorize response in 1 of 4 classes: RCB 0 (pCR), I (minimal RCB), II (moderate RCB), and III (extensive RCB).	Approx. 4 to 6 months
Secondary	To evaluate the efficacy, measured by RCB, of olaparib monotherapy and olaparib plus durvalumab combination therapy as assessed by local pathology review	RCB index value using 6 variables to categorize response in 1 of 4 classes: RCB 0 (pCR), I (minimal RCB), II (moderate RCB), and III (extensive RCB).	Approx. 4 to 6 months
Secondary	To evaluate the efficacy of olaparib monotherapy and olaparib plus durvalumab combination therapy in terms of change from baseline tumour volume. Tumour volume will be assessed by local radiology review.	Percentage change in tumour volume from baseline after 3 cycles of treatment will be measured using MRI.; Baseline is defined as the most recent measurement prior to the first administration of study intervention. Percent change from baseline is defined as: (Difference in value between post-baseline volume and baseline volume) divided by baseline volume and multiplied by 100.	Approx. 4 to 6 months
Secondary	To evaluate the efficacy of olaparib monotherapy and olaparib plus durvalumab combination therapy in terms of change from baseline tumour volume. Tumour volume will be assessed by local radiology review.	Percentage change in tumour volume from baseline after 6 cycles of treatment will be measured using MRI.; Baseline is defined as the most recent measurement prior to the first administration of study intervention. Percent change from baseline is defined as: (Difference in value between post-baseline volume and baseline volume) divided by baseline volume and multiplied by 100.	Approx. 4 to 6 months
Secondary	To evaluate the efficacy of olaparib monotherapy and olaparib plus durvalumab combination therapy by assessment of EFS (event-free survival).	EFS is defined as time from the first dose of study intervention administration to any of the following events: progression of disease that precludes surgery, local or distant recurrence after surgery, second primary malignancy (breast or other invasive cancers), or death due to any cause.	Approx. 3 years
Secondary	Safety and tolerability profile of olaparib monotherapy and olaparib plus durvalumab combination therapy by assessment of advers events and seriuos advers events (AEs/SAEs)	Graded according to the Common Terminology Criteria for Adverse Event (CTCAE) grade and changes in CTCAE grade	Through study completion, around 15 months for single patient
Secondary	The number of participants with adverse events /serious adverse events of olaparib monotherapy and olaparib plus durvalumab combination therapy.	Data will include clinical observations, ECG parameters, haematology / clinical chemistry, vital signs assessed as the number of participants with adverse events.	Through study completion, around 15 months for single patient
Secondary	Safety and tolerability profile of olaparib monotherapy when given as adjuvant therapy to participants who achieve pCR by assessment of AEs/SAEs	Graded according to the Common Terminology Criteria for Adverse Event (CTCAE) grade and changes in CTCAE grade	Through study completion, around 15 months for single patient
Secondary	The number of participants with adverse events / serious adverse events of olaparib monotherapy when given as adjuvant therapy to participants who achieve pCR.	Data will include clinical observations, ECG parameters, haematology / clinical chemistry, vital signs assessed as the number of participants with adverse events.	Through study completion, around 15 months for single patient
Secondary	Systolic blood pressure (SBP), diastolic blood pressure (DBP)	millimeter of mercury (mmHg)	Through study completion, around 15 months for single patient
Secondary	Body Temperature	Celsius (°C)	Through study completion, around 15 months for single patient
Secondary	Pulse rate (heart rate)	Beats per minute (BPM)	Through study completion, around 15 months for single patient
Secondary	Weight	Kilograms (kg)	Through study completion, around 15 months for single patient