Investigating Atezolizumab in Newly Diagnosed ER Positive Breast Cancer Patients According to Their AdipOsity

NCT04630210 | Withdrawn Early Phase 1 DMC

• 1 other identifier: S63893
• Study Type: interventional
• Target: N/A
• Locations: 0 countries
• Sites: N/A

Brief Summary

One out of 8 women will develop breast cancer (BC) in her lifetime and despite improvements in therapeutic strategies it remains one of the main causes of cancer-related mortality for women in industrialized countries. Over the past decades another worldwide health problem has emerged: obesity. Around 50% of European women are either overweight or obese (body mass index (BMI)≥25 kg/m2: overweight; BMI≥30 kg/m2: obese). The global health effects of high BMI include the well-known elevated risk for developing cardiovascular disease and diabetes and a broad range of cancers, including in the breast. The connection between BC and obesity is gaining attention because of its clinical relevance. Heavier BC patients are generally older and tend to present with more aggressive disease (larger tumours and more frequent axillary lymph node dissemination). Likewise, they are also at higher risk of recurrence and resistance to therapy. This is of high importance, as development of therapy-resistant metastases is the ultimate cause of death in relapsing patients. Several molecular pathways linking the more aggressive BC nature to obesity have been proposed, such as oestrogens and fat cell signalling molecules, insulin signalling, metabolic inflammation and altered lipid metabolism. Adiposity is hardly taken into consideration in the treatment of BC patients. This is in contrast with the emerging trend to develop personalized therapies based on individual characteristics of the patient and molecular features of the tumour. Very recent data show that the upcoming treatment strategy of immunotherapy (IT) has better outcomes in obese patients in melanoma, renal cell and lung carcinoma. This could be explained by the fact that obesity induces T-cell dysregulation, which makes these patients more sensitive to IT. Whether or not this accounts for BC as well, is currently unknown. In endocrine BC treatment, research on the effect of BMI on treatment resistance is mainly retrospective and it is unclear whether heavier patients would present a differential benefit to aromatase inhibitors compared to lean patients. Also, most of these studies only considered BMI and no additional adiposity-related inflammation and other variables. Here, we therefore want to prospectively evaluate the local and systemic effects of aromatase inhibition and immunotherapy, either combined or alone, in a window of opportunity study carried out in luminal B like postmenopausal BC patients.

Conditions

Breast Cancer

Outcome Measures

Primary Outcomes (2)

• Ki67 decrease

  To detect a decrease in Ki67 expression levels at the time of surgery for obese and overweight postmenopausal luminal B like treatment-naïve early BC patients preoperatively having received a single dose of atezolizumab in combination with letrozole daily (arm B) versus letrozole daily alone (arm A).

  At surgery

• sTIL increase

  To detect a stronger increase in stromal Tumour Infiltrating Lymphocytes (sTIL) at the time of surgery compared to the time of pre-treatment biopsy for obese and overweight postmenopausal luminal B like treatment-naïve early BC patients preoperatively having received a single dose of atezolizumab, either alone (arm C) or in combination with letrozole daily (arm B) versus letrozole daily alone (arm A).

  At surgery

Study Arms (4)

A: Letrozole

EXPERIMENTAL

Letrozole 2.5 mg/day oral until surgery

Drug: Letrozole

B: Letrozole + atezolizumab

EXPERIMENTAL

Letrozole 2.5 mg/day oral until surgery and Atezolizumab 840 mg intravenous (IV) single-dose 14 days (+/- 4 days) before surgery

Drug: Letrozole; Drug: Atezolizumab

C: Atezolizumab

EXPERIMENTAL

Atezolizumab 840 mg IV single-dose 14 days (+/- 4 days) before surgery

Drug: Atezolizumab

D: Observation

NO INTERVENTION

Observation until surgery

Interventions

Letrozole DRUG

Letrozole 2.5 mg/day oral until surgery

A: Letrozole; B: Letrozole + atezolizumab

Atezolizumab DRUG

Atezolizumab 840 mg intravenous (IV) single-dose 14 days (+/- 4 days) before surgery

B: Letrozole + atezolizumab; C: Atezolizumab

Eligibility Criteria

• Age: 18 Years - 75 Years
• Gender Eligibility Details: Postmenopausal state is required.
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Be willing and able to provide written informed consent for the trial.
• Postmenopausal status and ≤75 years of age on day of signing the informed consent with postmenopausal status defined as one of the following: prior bilateral surgical oophorectomy; age ≥ 56 years and natural amenorrhea with ≥1 year since last menses; age \<56 years with amenorrhea ≥1 year and serum oestradiol levels and follicle-stimulating hormone (FSH) levels in the postmenopausal range without the use of luteinizing hormone releasing hormone agonists; or age \<56 years after hysterectomy with one or both ovaries left in place and serum oestradiol levels and FSH levels in the postmenopausal range.
• Be willing to provide tissue from a newly obtained core or excisional biopsy of the tumour that should be evaluable for central histological characterization and future molecular testing.
• Have a performance status of 0 or 1 on the ECOG Performance Scale.
• Have a newly diagnosed non-metastatic previously untreated and operable primary invasive carcinoma of the breast that meets the following criteria: (1) histologically confirmed invasive carcinoma of the breast; (2) invasive carcinoma of no special type (commonly referred to as invasive ductal histology); (3) ER positive/HER2-negative status; (4) proliferation marker Ki67 level of ≥20%; and (5) tumour size on imaging larger than or equal to 1.5 cm (largest diameter). Multifocal, multicentric unilateral or bilateral breast tumours are allowed provided that all routinely collected/analysed foci correspond to all criteria above.
• Any clinical nodal status.
• Be willing to provide plasma/blood and tumour samples for translational research.
• Demonstrate adequate organ function as defined in Table 2.
• Have a negative hepatitis B surface antigen (HBsAg) test at screening.
• Have a negative total hepatitis B core antibody (HBcAb) test at screening, or positive total HBcAb test followed by a negative hepatitis B virus (HBV) DNA test at screening. The HBV DNA test will be performed only for patients who have a positive total HBcAb test.
• Have a negative hepatitis C virus (HCV) antibody test at screening, or positive HCV antibody test followed by a negative HCV RNA test at screening. The HCV RNA test will be performed only for patients who have a positive HCV antibody test.
• Completion of all necessary screening procedures within 28 days prior to randomisation.

You may not qualify if:

• Having received any previous systemic anti-cancer treatment (i.e. neoadjuvant) including, but not limited to, chemotherapy, targeted therapy, immunotherapy, hormonal therapy, or having received radiotherapy for the currently diagnosed breast cancer.
• Currently participating in an interventional study and receiving study therapy or having participated in a study of an investigational agent and having received study therapy or to have used an investigational device within 4 weeks of receiving the treatment dose.
• Having a diagnosis of immunodeficiency or having received high-dose systemic steroid therapy or any other form of immunosuppressive therapy within 14 days prior to receiving the trial treatment. Please note the following exceptions: acute, low-dose systemic immunosuppressant medication or a one-time pulse dose of systemic immunosuppressant medication (e.g., 48 hours of corticosteroids for a contrast allergy) is allowed; patients who received mineralocorticoids (e.g., fludrocortisone), or low-dose corticosteroids for orthostatic hypotension or adrenal insufficiency are eligible for the study; and patients who are on treatment with inhalation corticosteroids are eligible for the study.
• Known history of TB (Bacillus Tuberculosis) infection.
• Known hypersensitivity to atezolizumab or any of its excipients.
• History of severe anaphylactic reaction to chimeric or humanized antibodies or fusion proteins.
• Known allergy or hypersensitivity to any component of the letrozole formulation.
• History of invasive breast cancer prior to this diagnosis (relapse/second primary).
• Patients with eczema, psoriasis, lichen simplex chronicus, or vitiligo with dermatologic manifestations only (e.g., patients with psoriatic arthritis are excluded) are eligible for the study provided all of following conditions are met: rash must cover \<10% of body surface area, disease must be well controlled at baseline and may require only low-potency topical corticosteroids, no occurrence of acute exacerbations of the underlying condition requiring psoralen and ultraviolet A (PUVA) therapy or ultraviolet B (UVB) therapy, radiation, methotrexate, retinoids, biologic agents, oral calcineurin inhibitors, or high potency oral corticosteroids within the previous 12 months.
• To have a history of pulmonary fibrosis, bronchiolitis obliterans, drug-induced pneumonitis, or idiopathic pneumonitis, or evidence of active pneumonitis. History of radiation induced lung injury such as radiation pneumonitis or radiation fibrosis is permitted.
• To have a recent or active infection that requires or has required systemic therapy, being either: a severe infection within 4 weeks prior to initiation of study treatment, including, but not limited to bacteremia, or severe pneumonia; a severe infection within 4 weeks prior to initiation of study treatment that has required hospitalization because of its complications, or an infection that has been treated with oral or IV antibiotics, antiviral treatment, systemic antimycotics or systemic antiparasitic drugs within 1 week prior to initiation of study treatment. Patients receiving prophylactic antibiotics (e.g., to prevent a urinary tract infection or chronic obstructive pulmonary disease exacerbation) are eligible for the study.
• To have a known psychiatric or substance abuse disorder that would interfere with cooperation with the requirements of the trial.
• To have received prior treatment with CD137 agonists or immune checkpoint blockade therapies, including anti-CTLA-4, anti-PD-1, and anti-PD-L1 therapeutic antibodies.
• To have a known history of Human Immunodeficiency Virus (HIV) infection.
• To have received a live vaccine within 30 days of planned start of study therapy.

Sponsors & Collaborators

• Universitaire Ziekenhuizen KU Leuven: lead
• KU Leuven: collaborator

MeSH Terms

Conditions

Breast Neoplasms

Interventions

Letrozole; atezolizumab

Condition Hierarchy (Ancestors)

Neoplasms by Site; Neoplasms; Breast Diseases; Skin Diseases; Skin and Connective Tissue Diseases

Intervention Hierarchy (Ancestors)

Nitriles; Organic Chemicals; Triazoles; Azoles; Heterocyclic Compounds, 1-Ring; Heterocyclic Compounds

Study Officials

• Hans Wildiers, MD PhD

  UZ Leuven

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: early phase 1
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: BASIC SCIENCE
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: November 9, 2020
• First Posted: November 16, 2020
• Study Start: February 1, 2021
• Primary Completion: January 31, 2025
• Study Completion: January 31, 2025
• Last Updated: June 15, 2022

Record last verified: 2022-05

Data Sharing

• IPD Sharing: Will not share