A Phase 3 Efficacy, Safety and Tolerability Study of Zolbetuximab (Experimental Drug) Plus mFOLFOX6 Chemotherapy Compared to Placebo Plus mFOLFOX6 as Treatment for Gastric and Gastroesophageal Junction (GEJ) Cancer



Status:Recruiting
Healthy:No
Age Range:18 - Any
Updated:4/6/2019
Start Date:June 21, 2018
End Date:September 2022
Contact:Astellas Pharma Global Development
Email:astellas.registration@astellas.com
Phone:800-888-7704

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A Phase 3, Global, Multi-Center, Double-Blind, Randomized, Efficacy Study of Zolbetuximab (IMAB362) Plus mFOLFOX6 Compared With Placebo Plus mFOLFOX6 as First-line Treatment of Subjects With Claudin (CLDN)18.2-Positive, HER2-Negative, Locally Advanced Unresectable or Metastatic Gastric or Gastroesophageal Junction (GEJ) Adenocarcinoma

A study of zolbetuximab (IMAB362) plus mFOLFOX6 versus placebo plus mFOLFOX6 in subjects with
Claudin 18.2 positive, HER2-negative, locally advanced unresectable or metastatic gastric or
gastroesophageal junction adenocarcinoma.

Why is this study being done?

SPOTLIGHT is a new clinical study for adult patients who have any of:

- advanced unresectable gastric or GEJ cancer

- metastatic gastric or GEJ cancer These types of cancers have a unique set of proteins
(called Claudin 18.2). We may be able to use a treatment that targets the proteins to
kill the cancer cells.

For patients with one of the types of cancer listed above, mFOLFOX6 (a combination of three
chemotherapies known as Oxaliplatin, Leucovorin, and Fluorouracil) is a current treatment
option. This study is testing an experimental medicine called zolbetuximab (IMAB362).
Zolbetuximab attaches itself to Claudin 18.2 on the cancer cells causing cancer cell death.

Patients will be assigned to one of two groups by chance and given either:

- zolbetuximab with mFOLFOX6; or

- a placebo with mFOLFOX6 A placebo is a treatment that looks like the experimental
medicine, but contains no medicine.

The goal of the study is to find out if zolbetuximab with mFOLFOX6 helps patients to live
longer by stopping the cancer from getting worse.

The study consists of the following periods: screening; treatment; post-treatment follow up,
safety follow up, long term and survival follow-up.

Inclusion Criteria:

- Female subject eligible to participate if she is not pregnant (negative serum
pregnancy test at screening; female subjects with elevated serum beta human chorionic
gonadotropin and a demonstrated non-pregnant status through additional testing are
eligible) and at least one of the following conditions applies:

- Not a woman of child-bearing potential (WOCBP) OR

- WOCBP who agrees to follow the contraceptive guidance throughout the treatment
period and for at least 6 months after the final study drug administration

- Female subject must agree not to breastfeed starting at screening and throughout the
study period, and for 6 months after the final study drug administration.

- Female subject must agree not to donate ova starting at screening and throughout the
study period, and for 6 months after the final study drug administration.

- A sexually active male subject with a female partner(s) who is of child-bearing
potential must agree to use contraception during the treatment period and for at least
6 months after the final study drug administration.

- Male subject must agree not to donate sperm starting at screening and throughout the
study period, and for 6 months after the final study drug administration.

- Male subject with a pregnant or breastfeeding partner(s) must agree to remain
abstinent or use a condom for the duration of the pregnancy or time partner is
breastfeeding throughout the study period and for 6 months after the final study drug
administration.

- Subject has histologically confirmed diagnosis of Gastric or GEJ adenocarcinoma.

- Subject has radiologically confirmed locally advanced unresectable or metastatic
disease within 28 days prior to the first dose of study treatment.

- Subject has measurable disease according to RECIST 1.1 within 28 days prior to the
first dose of study treatment. For subjects with only 1 measurable lesion and prior
radiotherapy, the lesion must be outside the field of prior radiotherapy or must have
documented progression following radiation therapy.

- Subject's tumor expresses CLDN18.2 in ≥ 75% of tumor cells demonstrating moderate to
strong membranous staining as determined by central immunohistochemistry (IHC)
testing.

- Subject has a HER2-Negative tumor as determined by local or central testing on a
gastric or GEJ tumor specimen.

- Subject has ECOG performance status 0 to 1.

- Subject has predicted life expectancy ≥ 12 weeks.

- Subject must meet all of the following criteria based on the centrally analyzed
laboratory tests within 14 days prior to the first dose of study treatment. In case of
multiple laboratory data within this period, the most recent data should be used to
determine eligibility.

- Hemoglobin (Hgb) ≥ 9 g/dL. NOTE: subject must not have received any growth factor
or blood transfusions within 14 days prior to the hematology values obtained at
screening. Subjects requiring transfusions to meet eligibility criteria are not
eligible.

- Absolute neutrophil count (ANC) ≥ 1.5 x 10^9/L

- Platelets ≥ 100 x 10^9/L

- Albumin ≥ 2.5 g/dL

- Total bilirubin < 1.5 x upper limit of normal (ULN)

- Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 2.5 x ULN
without liver metastases (or ≤ 5 x ULN if liver metastases are present)

- Estimated creatinine clearance ≥ 30 mL/min

- Prothrombin time (PT)/international normalized ratio (INR) and partial
thromboplastin time (PTT) ≤ 1.5 x ULN (except for subjects receiving
anticoagulation therapy)

Exclusion Criteria:

- Subject has received prior systemic chemotherapy for locally advanced unresectable or
metastatic gastric or GEJ adenocarcinoma. However, subject may have received either
neo-adjuvant or adjuvant chemotherapy as long as it was completed at least 6 months
prior to the first dose of study treatment. Subject may have received treatment with
herbal medications that have known anti-tumor activity >28 days prior to first dose of
study treatment.

- Subject has received radiotherapy for locally advanced unresectable or metastatic
gastric or GEJ adenocarcinoma unless the radiotherapy was completed >28 days prior to
start of study treatment. Subject who received palliative radiotherapy to peripheral
bone metastases ≥14 days prior to start of study treatment and has recovered from all
acute toxicities is allowed.

- Subject has received systemic immunosuppressive therapy, including systemic
corticosteroids within 14 days prior to first dose of study treatment. Subjects using
a physiologic replacement dose of hydrocortisone or its equivalent (defined as up to
30 mg per day of hydrocortisone or up to 10 mg per day of prednisone) or a single dose
of systemic corticosteroids are allowed.

- Subject has received other investigational agents or devices within 28 days prior to
first dose of study treatment.

- Subject has prior severe allergic reaction or intolerance to known ingredients of
zolbetuximab or other monoclonal antibodies, including humanized or chimeric
antibodies.

- Subject has known immediate or delayed hypersensitivity, intolerance or
contraindication to any component of study treatment.

- Subject has prior severe allergic reaction or intolerance to any component of
mFOLFOX6.

- Subject has known dihydropyrimidine dehydrogenase deficiency.

- Subject has gastric outlet syndrome or persistent/recurrent vomiting.

- Subject with recent gastric bleeding or symptomatic subjects with proven gastric
ulcers that would exclude the subject from participation.

- Subject has a known history of a positive test for human immunodeficiency virus (HIV)
infection or known active hepatitis B (positive hepatitis B surface antigen (HBs Ag))
or hepatitis C infection. For subjects who are negative for HBs Ag, but hepatitis B
core antibody (HBc Ab) positive, an HB deoxyribonucleic acid (DNA) test will be
performed and if positive the subject will be excluded. Subjects with positive
serology but negative hepatitis C virus (HCV) ribonucleic acid (RNA) test results are
eligible.

- Subject has an active autoimmune disease that has required systemic treatment within
the past 2 years.

- Subject has active infection requiring systemic therapy that has not completely
resolved within 14 days prior to start of study treatment.

- Subject has significant cardiovascular disease, including:

- Congestive heart failure (defined as New York Heart Association Class III or IV),
myocardial infarction, unstable angina, coronary angioplasty, stenting, coronary
artery bypass graft, cerebrovascular accident or hypertensive crisis within 6
months prior to administration of first dose of study drug.

- History of clinically significant ventricular arrhythmias (i.e., sustained
ventricular tachycardia, ventricular fibrillation or Torsades de Pointes);

- QTc interval > 450 msec

- Cardiac arrhythmias requiring anti-arrhythmic medications (Subject with rate
controlled atrial fibrillation for > 1 month prior to first dose of study drugs
are eligible)

- Subject has known active central nervous system metastases and/or carcinomatous
meningitis.

- Subject has known peripheral sensory neuropathy > Grade 1 unless the absence of deep
tendon reflexes is the sole neurological abnormality.

- Subject has had a major surgical procedure ≤ 28 days before the start of study
treatment.

- Subject without complete recovery from a major surgical procedure ≤ 14 days
before start of study treatment.

- Subject has psychiatric illness or social situations that would preclude study
compliance.

- Subject has another malignancy for which treatment is required.

- Subject has any concurrent disease, infection or comorbid condition that interferes
with the ability of the subject to participate in the study, which places the subject
at undue risk or complicates the interpretation of data.
We found this trial at
30
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New York, New York 10029
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666 Elm Street
Buffalo, New York 14263
(716) 845-2300
Roswell Park Cancer Institute Welcome to Roswell Park Cancer Institute (RPCI), America's first cancer center...
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5801 South Ellis Avenue
Chicago, Illinois 60637
 773.702.1234
University of Chicago One of the world's premier academic and research institutions, the University of...
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8700 Beverly Blvd # 8211
Los Angeles, California 90048
(1-800-233-2771)
Cedars Sinai Med Ctr Cedars-Sinai is known for providing the highest quality patient care. Our...
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Miami, Florida 33124
(305) 284-2211
University of Miami A private research university with more than 15,000 students from around the...
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3181 Southwest Sam Jackson Park Road
Portland, Oregon 97239
503 494-8311
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Douglas, Queensland
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Duarte, California 91010
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1515 Holcombe Blvd
Houston, Texas 77030
 713-792-2121
University of Texas M.D. Anderson Cancer Center The mission of The University of Texas MD...
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Huntington Beach, California 92648
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Kettering, Ohio 45409
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555 N Duke St
Lancaster, Pennsylvania 17602
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Lancaster General Hospital For more than a century, Lancaster General Hospital has been a leader...
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Loma Linda University
Loma Linda, California 92354
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Loma Linda University Loma Linda University (LLU) is a Seventh-day Adventist educational health-sciences institution with...
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Louisville, Kentucky 40207
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Philadelphia, Pennsylvania 19124
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1020 Walnut St
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Thomas Jefferson University We are dedicated to the health sciences and committed to educating professionals,...
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550 East Van Buren Street
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Providence, Rhode Island 02903
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1 Shields Ave
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5100 Gamble Drive
Saint Louis Park, Minnesota 55426
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San Francisco, California 94143
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Sioux Falls, South Dakota 57104
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101 Nicolls Rd
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(631) 444-4000
Stony Brook University Medical Center Stony Brook Medicine expresses our shared mission of research, clinical...
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Tucson, Arizona 85724
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