AbbVie Announces Supplemental New Drug Application Accepted for Priority Review by U.S. FDA for IMBRUVICA® (ibrutinib) in Combination with Obinutuzumab (GAZYVA®) for Previously Untreated Chronic Lymphocytic Leukemia (CLL)

NORTH CHICAGO, Ill., Oct. 17, 2018 /PRNewswire/ -- AbbVie (NYSE: ABBV), a research-based global biopharmaceutical company, today announced the U.S. Food and Drug Administration (FDA) has accepted its supplemental New Drug Application (sNDA) for Priority Review for IMBRUVICA^® (ibrutinib) in combination with obinutuzumab (GAZYVA^®) in previously untreated adult patients with chronic lymphocytic leukemia or small lymphocytic lymphoma (CLL/SLL). If the sNDA is approved, the use of IMBRUVICA with obinutuzumab could become the first chemotherapy-free, anti-CD20 combination approved by the FDA for the first-line treatment of CLL/SLL. IMBRUVICA is currently FDA-approved to treat adults with CLL/SLL as a single-agent for all lines of therapy and in combination with bendamustine and rituximab (BR).¹ IMBRUVICA is a once-daily, first-in-class Bruton's tyrosine kinase (BTK) inhibitor that is administered orally, and is jointly developed and commercialized by Pharmacyclics LLC, an AbbVie company, and Janssen Biotech, Inc.

"Our robust clinical research program with IMBRUVICA continues to reinforce the evidence for its use as an efficacious treatment option in CLL and SLL, this time versus a National Comprehensive Cancer Network guidelines Category 1 treatment, which is the chemoimmunotherapy combination of chlorambucil plus obinutuzumab,"² said Danelle James, M.D., M.A.S., Head of Clinical Science, Pharmacyclics LLC, an AbbVie company. "Further, for the first time in CLL, results from iLLUMINATE have shown the potential benefits of using an IMBRUVICA-based, chemotherapy-free, anti-CD20 combination. Since its initial approval five years ago, IMBRUVICA has received nine FDA approvals across six different diseases, and we remain committed to advancing new research to understand its full potential in blood cancers like CLL and SLL, as well as other difficult-to-treat diseases with unmet medical needs."

The sNDA submission is based on positive results from the Phase 3 iLLUMINATE (PCYC-1130) trial announced in May 2018, which showed IMBRUVICA plus obinutuzumab was associated with significantly longer progression-free survival (PFS) versus chlorambucil plus obinutuzumab in adults with previously untreated CLL/SLL, as assessed by an Independent Review Committee.

CLL is one of the two most common forms of leukemia in adults and is a type of cancer that can develop from cells in the bone marrow that later mature into certain white blood cells (called lymphocytes).³ While these cancer cells start in the bone marrow, they then later spread into the blood. The prevalence of CLL is approximately 115,000 patients in the U.S. with approximately 20,000 newly diagnosed patients every year.^4,5 SLL is a slow-growing lymphoma biologically similar to CLL in which too many immature white blood cells cause lymph nodes to become larger than normal.⁶ CLL/SLL are predominately diseases of the elderly, with a median age diagnosis ranging from 65-70 years.⁷

About iLLUMINATE
iLLUMINATE (NCT 02264574) is a Pharmacyclics-sponsored, randomized, multi-center, open-label, Phase 3 study of IMBRUVICA in combination with obinutuzumab versus chlorambucil in combination with obinutuzumab in patients with previously untreated chronic lymphocytic leukemia or small lymphocytic lymphoma (CLL/SLL). According to the study protocol, patients enrolled are age 65 years and older or if less than age 65 years must have had at least one of the following criteria: Cumulative Illness Rating Score (CIRS) >6 and Creatinine clearance estimated <70 mL/min using Cockcroft-Gault equation. In the study, patients were randomized to receive IMBRUVICA 420 mg continuously in combination with obinutuzumab 1000 mg intravenously over 6 cycles or chlorambucil on Days 1 and 15 of each cycle plus obinutuzumab 1000 mg intravenously over 6 cycles. The primary endpoint is progression-free survival by Independent Review Committee (IRC), with secondary objectives including overall response rate and rate of minimal residual disease (MRD)-negative responses. As announced in May 2018, the study met its primary endpoint, showing significantly longer progression-free survival (PFS) was associated with adult CLL/SLL patients treated with IMBRUVICA plus obinutuzumab versus chlorambucil plus obinutuzumab, as assessed by an IRC.

About IMBRUVICA
IMBRUVICA (ibrutinib) is a first-in-class, oral, once-daily therapy that mainly works by inhibiting a protein called Bruton's tyrosine kinase (BTK). BTK is a key signaling molecule in the B-cell receptor signaling complex that plays an important role in the survival and spread of malignant B cells.⁸ IMBRUVICA blocks signals that tell malignant B cells to multiply and spread uncontrollably.

IMBRUVICA is FDA-approved in six distinct patient populations: chronic lymphocytic leukemia (CLL), small lymphocytic lymphoma (SLL), Waldenström's macroglobulinemia (WM), along with previously-treated mantle cell lymphoma (MCL), previously-treated marginal zone lymphoma (MZL) and previously-treated chronic graft-versus-host disease (cGVHD).¹

• IMBRUVICA was first approved for adult patients with MCL who have received at least one prior therapy in November 2013.
• Soon after, IMBRUVICA was initially approved in adult CLL patients who have received at least one prior therapy in February 2014. By July 2014, the therapy received approval for adult CLL patients with 17p deletion, and by March 2016, the therapy was approved as a frontline CLL treatment.
• IMBRUVICA was approved for adult patients with WM in January 2015.
• In May 2016, IMBRUVICA was approved in combination with bendamustine and rituximab (BR) for adult patients with CLL/SLL.
• In January 2017, IMBRUVICA was approved for adult patients with MZL who require systemic therapy and have received at least one prior anti-CD20-based therapy.
• In August 2017, IMBRUVICA was approved for adult patients with cGVHD that failed to respond to one or more lines of systemic therapy.
• In August 2018, IMBRUVICA plus rituximab was approved for adult patients with WM.

Accelerated approval was granted for the MCL and MZL indications based on overall response rate. Continued approval for MCL and MZL may be contingent upon verification and description of clinical benefit in confirmatory trials.

IMBRUVICA has been granted four Breakthrough Therapy Designations from the U.S. FDA. This designation is intended to expedite the development and review of a potential new drug for serious or life-threatening diseases.⁹ IMBRUVICA was one of the first medicines to receive FDA approval via the new Breakthrough Therapy Designation pathway.

IMBRUVICA is being studied alone and in combination with other treatments in several blood and solid tumor cancers and other serious illnesses. IMBRUVICA has one of the most robust clinical oncology development programs for a single molecule in the industry, with more than 130 ongoing clinical trials. There are approximately 30 ongoing company-sponsored trials, 14 of which are in Phase 3, and more than 100 investigator-sponsored trials and external collaborations that are active around the world. To date, more than 120,000 patients around the world have been treated with IMBRUVICA in clinical practice and clinical trials.

IMPORTANT SAFETY INFORMATION

WARNINGS AND PRECAUTIONS

Hemorrhage: Fatal bleeding events have occurred in patients treated with IMBRUVICA^®. Grade 3 or higher bleeding events (intracranial hemorrhage [including subdural hematoma], gastrointestinal bleeding, hematuria, and post-procedural hemorrhage) have occurred in 3% of patients, with fatalities occurring in 0.3% of 1,011 patients exposed to IMBRUVICA^® in clinical trials. Bleeding events of any grade, including bruising and petechiae, occurred in 44% of patients treated with IMBRUVICA^®.

The mechanism for the bleeding events is not well understood.

IMBRUVICA^® may increase the risk of hemorrhage in patients receiving antiplatelet or anticoagulant therapies and patients should be monitored for signs of bleeding.

Consider the benefit-risk of withholding IMBRUVICA^® for at least 3 to 7 days pre and post-surgery depending upon the type of surgery and the risk of bleeding.

Infections: Fatal and non-fatal infections (including bacterial, viral, or fungal) have occurred with IMBRUVICA^® therapy. Grade 3 or greater infections occurred in 24% of 1,011 patients exposed to IMBRUVICA^® in clinical trials. Cases of progressive multifocal leukoencephalopathy (PML) and Pneumocystis jirovecii pneumonia (PJP) have occurred in patients treated with IMBRUVICA^®. Consider prophylaxis according to standard of care in patients who are at increased risk for opportunistic infections.

Monitor and evaluate patients for fever and infections and treat appropriately.

Cytopenias: Treatment-emergent Grade 3 or 4 cytopenias including neutropenia (23%), thrombocytopenia (8%), and anemia (3%) based on laboratory measurements occurred in patients with B-cell malignancies treated with single agent IMBRUVICA^®.

Monitor complete blood counts monthly.

Cardiac Arrhythmias: Fatal and serious cardiac arrhythmias have occurred with IMBRUVICA^® therapy. Grade 3 or greater ventricular tachyarrhythmias occurred in 0.2% of patients, and Grade 3 or greater atrial fibrillation and atrial flutter occurred in 4% of 1,011 patients exposed to IMBRUVICA^® in clinical trials. These events have occurred particularly in patients with cardiac risk factors, hypertension, acute infections, and a previous history of cardiac arrhythmias.

Periodically monitor patients clinically for cardiac arrhythmias. Obtain an ECG for patients who develop arrhythmic symptoms (e.g., palpitations, lightheadedness, syncope, chest pain) or new onset dyspnea. Manage cardiac arrhythmias appropriately, and if it persists, consider the risks and benefits of IMBRUVICA^® treatment and follow dose modification guidelines.

Hypertension: Hypertension has occurred in 12% of 1,011 patients treated with IMBRUVICA^® in clinical trials with a median time to onset of 5 months (range, 0.03 to 22 months). Monitor patients for new onset hypertension or hypertension that is not adequately controlled after starting IMBRUVICA^®. Adjust existing anti-hypertensive medications and/or initiate anti-hypertensive treatment as appropriate.

Second Primary Malignancies: Other malignancies (9%) including non-skin carcinomas (2%) have occurred in 1,011 patients treated with IMBRUVICA^® in clinical trials. The most frequent second primary malignancy was non-melanoma skin cancer (6%).

Tumor Lysis Syndrome: Tumor lysis syndrome has been infrequently reported with IMBRUVICA^® therapy. Assess the baseline risk (e.g., high tumor burden) and take appropriate precautions.

Monitor patients closely and treat as appropriate.

Embryo-Fetal Toxicity: Based on findings in animals, IMBRUVICA^® can cause fetal harm when administered to a pregnant woman. Advise women to avoid becoming pregnant while taking IMBRUVICA^® and for 1 month after cessation of therapy. If this drug is used during pregnancy or if the patient becomes pregnant while taking this drug, the patient should be apprised of the potential hazard to a fetus. Advise men to avoid fathering a child during the same time period.

ADVERSE REACTIONS

B-cell malignancies: The most common adverse reactions (≥20%) in patients with B-cell malignancies (MCL, CLL/SLL, WM and MZL) were thrombocytopenia (58%)*, neutropenia (58%)*, diarrhea (42%), anemia (39%)*, rash (31%), musculoskeletal pain (31%), bruising (31%), nausea (28%), fatigue (27%), hemorrhage (23%), and pyrexia (20%).

The most common Grade 3 or 4 adverse reactions (≥5%) in patients with B-cell malignancies (MCL, CLL/SLL, WM and MZL) were neutropenia (36%)*, thrombocytopenia (15%)*, and pneumonia (10%).

Approximately 6% (CLL/SLL), 14% (MCL), 14% (WM) and 10% (MZL) of patients had a dose reduction due to adverse reactions. Approximately 4%-10% (CLL/SLL), 9% (MCL), and 7% (WM [5%] and MZL [13%]) of patients discontinued due to adverse reactions.

cGVHD: The most common adverse reactions (≥20%) in patients with cGVHD were fatigue (57%), bruising (40%), diarrhea (36%), thrombocytopenia (33%)*, stomatitis (29%), muscle spasms (29%), nausea (26%), hemorrhage (26%), anemia (24%)*, and pneumonia (21%).

The most common Grade 3 or 4 adverse reactions (≥5%) reported in patients with cGVHD were fatigue (12%), diarrhea (10%), neutropenia (10%)*, pneumonia (10%), sepsis (10%), hypokalemia (7%), headache (5%), musculoskeletal pain (5%), and pyrexia (5%).

Twenty-four percent of patients receiving IMBRUVICA^® in the cGVHD trial discontinued treatment due to adverse reactions. Adverse reactions leading to dose reduction occurred in 26% of patients.

*Treatment-emergent decreases (all grades) were based on laboratory measurements and adverse reactions.

DRUG INTERACTIONS

CYP3A Inhibitors: Dose adjustments may be recommended.

CYP3A Inducers: Avoid coadministration with strong CYP3A inducers.

SPECIFIC POPULATIONS

Hepatic Impairment (based on Child-Pugh criteria): Avoid use of IMBRUVICA^® in patients with severe baseline hepatic impairment. In patients with mild or moderate impairment, reduce IMBRUVICA^® dose.

Please click here for full Prescribing Information.

About AbbVie
AbbVie is a global, research and development-based biopharmaceutical company committed to developing innovative advanced therapies for some of the world's most complex and critical conditions. The company's mission is to use its expertise, dedicated people and unique approach to innovation to markedly improve treatments across four primary therapeutic areas: immunology, oncology, virology and neuroscience. In more than 75 countries, AbbVie employees are working every day to advance health solutions for people around the world. For more information about AbbVie, please visit us at www.abbvie.com. Follow @abbvie on Twitter, Facebook, LinkedIn or Instagram.

Forward-Looking Statements
Some statements in this news release may be forward-looking statements for purposes of the Private Securities Litigation Reform Act of 1995. The words "believe," "expect," "anticipate," "project" and similar expressions, among others, generally identify forward-looking statements. AbbVie cautions that these forward-looking statements are subject to risks and uncertainties that may cause actual results to differ materially from those indicated in the forward-looking statements. Such risks and uncertainties include, but are not limited to, challenges to intellectual property, competition from other products, difficulties inherent in the research and development process, adverse litigation or government action, and changes to laws and regulations applicable to our industry. Additional information about the economic, competitive, governmental, technological and other factors that may affect AbbVie's operations is set forth in Item 1A, "Risk Factors," in AbbVie's 2015 Annual Report on Form 10-K, which has been filed with the Securities and Exchange Commission. AbbVie undertakes no obligation to release publicly any revisions to forward-looking statements as a result of subsequent events or developments, except as required by law. 

IMBRUVICA is a registered trademark of Pharmacyclics LLC.

¹ IMBRUVICA U.S. Prescribing Information, August 2018

² Referenced with permission from the NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines^®) for Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma V.4.2018. © National Comprehensive Cancer Network, Inc. 2018. All rights reserved. Accessed March 14, 2018. To view the most recent and complete version of the guideline, go online to NCCN.org. NCCN makes no warranties of any kind whatsoever regarding their content, use or application and disclaims any responsibility for their application or use in any way.

³ American Society of Hematology. Leukemia. http://www.hematology.org/Patients/Cancers/Leukemia.aspx Accessed October 2018.

⁴ IMS Database [Data on File].

⁵ National Cancer Institute. Cancer Stat Facts: Leukemia - Chronic Lymphocytic Leukemia (CLL). https://seer.cancer.gov/statfacts/html/clyl.html. Accessed October 2018.

⁶ Leukaemia Foundation. Small lymphocytic lymphoma. https://www.leukaemia.org.au/disease-information/lymphomas/non-hodgkin-lymphoma/other-non-hodgkin-lymphomas/small-lymphocytic-lymphoma/. Accessed October2018.

⁷ Shanafelt, et al. Age at Diagnosis and the Utility of Prognostic Testing in Patients with Chronic Lymphocytic Leukemia (CLL). Cancer. 2010; 116(20): 4777–4787.

⁸ Genetics Home Reference. Isolated growth hormone deficiency. http://ghr.nlm.nih.gov/condition/isolated-growth-hormone-deficiency. Accessed August 2018.

⁹ U.S. Food and Drug Administration. Fact Sheet: Breakthrough Therapies. https://www.fda.gov/RegulatoryInformation/LawsEnforcedbyFDA/SignificantAmendmentstotheFDCAct/FDASIA/ucm329491.htm. Accessed August 2018.

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