Phase 3 Randomized, Controlled Study of Blinatumomab Alternating With Low-intensity Chemotherapy Versus Standard of Care for Older Adults With Newly Diagnosed Philadelphia-negative B-cell Precursor Acute Lymphoblastic Leukemia With Safety Run-in (Golden Gate Study)
Phase 3 Randomized, Controlled Study of Blinatumomab Alternating With Low-intensity Chemotherapy Versus Standard of Care for Older Adults With Newly Diagnosed Philadelphia-negative B-cell Precursor Acute Lymphoblastic Leukemia With Safety Run-in (Golden Gate Study)
The safety run-in part of the study aims to evaluate the safety and tolerability of blinatumomab alternating with low-intensity chemotherapy. The phase 3 part of the study aims to compare event-free survival (EFS) and overall survival (OS) of participants receiving blinatumomab alternating with low-intensity chemotherapy to EFS and (OS) of participants receiving standard of care (SOC) chemotherapy.
Inclusion Criteria:
- Age ≥ 55 years at the time of informed consent. OR
Age 40 to < 55 years of age if at least 1 of the following comorbidities at the time of informed consent:
history of grades 3 and 4 pancreatitis
diabetes mellitus with end-organ damage
severe liver disease such as cirrhosis stage 2 with portal hypertension or history of esophageal variceal bleeding and aspartate transaminase (AST)/alanine aminotransferase (ALT) > 10 x upper limit of normal (ULN) (liver cirrhosis must be confirmed by biopsy)
body mass index (BMI) ≥ 40 combined with relevant comorbidities such as metabolic syndrome
Any further combination of documented severe comorbidities that the investigator judges to be incompatible with administering an intensive pediatric based, adult adapted standard chemotherapy regimen but still compatible with the suggested protocol for older participants in both the experimental and the SOC arm. The participant history will be reviewed by the medical monitor during screening to determine enrollment acceptability based on a standard list with types of comorbidities allowed.
renal: estimated glomerular filtration rate based on MDRD calculation ≥ 50 mL/min/1.73 m^2
liver function: total bilirubin ≤ 2x upper limit of normal (ULN; unless Gilbert's Disease or if liver involvement with leukemia); exception for participants 40 to < 55 years of age if they have a comorbidity listed above: severe liver disease such as cirrhosis stage 2 with portal hypertension or history of esophageal variceal bleeding and AST/ALT > 10 x ULN (liver cirrhosis must be confirmed by biopsy)
cardiac: left ventricular ejection fraction (LVEF) ≥ 50% and no clinically significant, uncontrolled, or active cardiovascular disease (eg, myocardial infarction or stroke within 3 months). Consult with medical monitor as needed.
Exclusion Criteria:
Active central nervous system (CNS) leukemia (i.e., CNS 3 leukemia, confirmed by lumbar puncture) not resolved with IT chemotherapy during screening.
History of other malignancy within the past 3 years, with the following exceptions:
Clinically relevant CNS pathology or event such as epilepsy, childhood or adult seizure, paresis, aphasia, stroke, severe brain injuries, dementia, Parkinson's disease, cerebellar disease, organic brain syndrome, or psychiatric conditions that preclude the use of high dose of corticosteroids
Current autoimmune disease or history of autoimmune disease with potential CNS involvement
Known infection with human immunodeficiency virus (HIV)
Known infection with chronic or active infection with hepatitis B (eg, hepatitis b surface [HBs] antigen reactive or quantifiable hepatitis b virus [HBV] viral load) or hepatitis C virus (HCV) (eg, HCV RNA [qualitative] is detected).
Active hepatitis B and C based on the following results:
positive for hepatitis B surface antigen (HepBsAg) (indicative of chronic hepatitis B or recent acute hepatitis B)
negative HepBsAg and positive for hepatitis B core antibody: negative HBV DNA by PCR result is necessary to enroll.
positive Hepatitis C virus antibody (HepCAb): negative hepatitis C virus RNA by PCR result is necessary to enroll.
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