Overview

Chemotherapy and Atezolizumab for Patients With Extensive Stage Small Cell Lung Cancer (SCLC) With Untreated, Asymptomatic Brain Metastases

Status:
Recruiting
Trial end date:
2024-05-01
Target enrollment:
0
Participant gender:
All
Summary
This is a single arm, multicenter phase II trial for 60 patients with untreated extensive stage (ES) small cell lung cancer (SCLC) with asymptomatic brain metastases. Subjects will receive 4 cycles of induction treatment with Atezolizumab (1200 mg on Day 1) combined with carboplatin (5-6 AUC on Day 1) and etoposide (80-100 mg/m2 on Days 1-3). Each cycle equals 21 days. After 4 cycles of induction treatment, subjects will receive atezolizumab maintenance 1200 mg on Day 1 of each 3-week cycle. Subjects will receive treatment until disease progression, unacceptable drug-related toxicity, or withdrawal from study for any reason.
Phase:
Phase 2
Accepts Healthy Volunteers?
No
Details
Lead Sponsor:
Jeffrey Clarke
Collaborators:
Duke University
Genentech, Inc.
Treatments:
Atezolizumab
Carboplatin
Etoposide
Criteria
Inclusion Criteria:

1. Written informed consent and HIPAA authorization for release of personal health
information prior to registration. NOTE: HIPAA authorization may be included in the
informed consent or obtained separately.

2. Age ≥ 18 years with ability and willingness to provide informed consent.

3. ECOG Performance Status of 0-2.

4. Histological confirmation of Small Cell Lung Cancer- Extensive Stage (SCLC) per
Veterans Administration Lung Study Group (VALG).

5. At least one untreated asymptomatic brain metastasis that is measurable by RECIST 1.1
that has not been previously irradiated.

6. No prior treatment for metastatic disease. NOTE: A single cycle of chemotherapy
(platinum/etoposide) with or without atezolizumab is allowed within 30 days prior to
enrollment.

7. Treatment-free for at least 6 months since last chemo/radiotherapy, among those
treated (with curative intent) with prior chemo/radiotherapy for limited-stage SCLC.

8. Any prior cancer treatment must be completed at least 6 months prior to registration
and the subject must have recovered from all reversible acute toxic effects of the
regimen (other than alopecia) to Grade ≤ 1 or baseline. NOTE: a single cycle of
chemotherapy (platinum/etoposide) with or without atezolizumab is allowed within 30
days prior to enrollment.

9. A concurrent diagnosis of a separate malignancy is allowed if clinically stable and
does not require tumor-directed therapy.

10. Demonstrate adequate organ function as defined in the table below

- Absolute Neutrophil Count (ANC) ≥ 1.5K/mm3 without GCSF

- Hemoglobin (Hgb) ≥ 9 g/dL (without transfusion)

- Calculated creatinine clearance ≥ 50 cc/min OR Serum Cr < 1.5 x institutional ULN

- Bilirubin ≤ 1.5 × upper limit of normal (ULN)

- Aspartate aminotransferase (AST) ≤ 2 × ULN without liver metastasis ≤ 5 × ULN
with liver metastasis

- Alanine aminotransferase (ALT) ≤ 2 × ULN without liver metastasis ≤ 5 × ULN with
liver metastasis

11. Females of childbearing potential must have a negative serum pregnancy test within 3
days (72 hours) prior to enrollment. NOTE: Females are considered of childbearing
potential unless they are surgically sterile (have undergone a hysterectomy or
bilateral oophorectomy) or they are naturally postmenopausal for at least 12
consecutive months.

12. Females of childbearing potential and males must be willing to abstain from
heterosexual activity or to use 2 forms of effective methods of contraception from the
time of informed consent until 150 days (5 months) after treatment discontinuation.

13. Negative hepatitis B surface antigen (HBsAg) test, negative total hepatitis B core
antibody (HBcAb) test, or positive total HBcAb test followed by a negative hepatitis B
virus (HBV) DNA test. The HBV DNA test will be performed only for patients who have a
positive total HBcAb test. Testing required at screening only if results are not
known.

14. Negative hepatitis C virus (HCV) antibody test, or positive HCV antibody test followed
by a negative HCV RNA test. The HCV RNA test will be performed only for patients who
have a positive HCV antibody test. A positive HCV RNA test is sufficient to diagnose
active HCV infection in the absence of an HCV antibody test.

15. As determined by the enrolling physician or protocol designee, ability of the subject
to understand and comply with study procedures.

Exclusion Criteria:

1. Known active CNS metastases which are symptomatic. CNS metastases are considered
asymptomatic if the patient does not require high dose or escalating corticosteroids
or anticonvulsant therapy. Steroid dose must be equivalent to 2 mg of dexamethasone or
less daily.

- Prior steroid use as part of an anti-emetic regimen with chemotherapy is allowed.

- Patients must be on a stable dose of corticosteroid. No tapering or decreasing
dose within 7 days of enrollment.

2. Leptomeningeal disease. Discrete dural-based metastases will be allowed without
evidence of leptomeningeal disease.

3. Radiation therapy within 14 days prior to Day 1 of Cycle 1 Day 1.

4. Treatment with any investigational drug within 28 days prior to Cycle 1 Day 1.

5. Known auto-immune conditions requiring systemic immune suppression therapy other than
prednisone
6. History of interstitial pneumonitis from any cause.

7. Concurrent severe and/or uncontrolled medical conditions which may compromise
participation in the study as assessed by site investigator.

8. Current active infectious disease requiring systemic antibiotics, antifungal, or
antiviral treatment on Cycle 1 Day 1. Patients receiving prophylactic antibiotics
(e.g., for prevention of urinary tract infection or chronic obstructive pulmonary
disease) are eligible.

9. Current use of medications specified by the protocol as prohibited for administration
in combination with the study drugs. This includes patients with a condition requiring
systemic treatment with either corticosteroids (>10 mg daily prednisone equivalents)
or other immunosuppressive medications within 14 days prior to Cycle 1 Day 1. Inhaled
or topical steroids and adrenal replacement doses >10 mg daily prednisone equivalents
are permitted in the absence of active autoimmune disease. Patients who are receiving
denosumab prior to enrollment must be willing and eligible to receive a bisphosphonate
instead.

10. Pregnant or breastfeeding (NOTE: breast milk cannot be stored for future use while the
mother is being treated on study).

11. History of myocardial infarction, NYHA class III or IV congestive heart failure, or
unstable angina, cardiac or other vascular stenting, angioplasty, or surgery within 6
months prior to study enrollment.

12. Known history of HIV seropositivity or known acquired immunodeficiency syndrome
(AIDS), Testing not required at screening.

13. Requirement for ongoing anticoagulation with heparin, low molecular weight heparin, or
other oral anticoagulant (coumadin, DOAC).

14. Uncontrolled pleural effusion, pericardial effusion, or ascites requiring recurrent
drainage procedures (once monthly or more frequently). NOTE: Patients with indwelling
catheters (e.g., PleurX®) are allowed.

15. History of severe allergic, anaphylactic, or other hypersensitivity reactions to
chimeric or humanized antibodies or fusion proteins.

16. Known hypersensitivity or allergy to biopharmaceuticals produced in Chinese hamster
ovary cells or any component of the atezolizumab formulation.

17. History of allergic reactions to carboplatin or etoposide.

18. Intolerance of atezolizumab or other PD-1/PD-L1 axis drug(s), or any other antibody or
drug specifically targeting T-cell co-stimulation or immune checkpoint pathways,
including prior therapy with anti-tumor vaccines or other immune-stimulatory
anti-tumor agents.