A Study to Customize Ibrutinib Treatment Regimens for Participants With Previously Untreated Chronic Lymphocytic Leukemia

The Oncology Institute Clinical Research, Cerritos, California, United States

Cancer and Blood Specialty Clinic, Los Alamitos, California, United States

SLO Oncology and Hematology Health Center, San Luis Obispo, California, United States

Providence Medical Foundation, Santa Rosa, California, United States

PIH Health Hospital, Whittier, California, United States

Grand Valley Oncology, Grand Junction, Colorado, United States

Mount Sinai Medical Center Campus, Miami Beach, Florida, United States

The Oncology Institute, North Miami Beach, Florida, United States

Mid Florida Hematology Oncology, Orange, Florida, United States

Boise VA Medical Center, Boise, Idaho, United States

Hope and Healing Cancer Services, Hinsdale, Illinois, United States

Springfield Clinic, Springfield, Illinois, United States

Iowa City VA Health Care System, Iowa City, Iowa, United States

Minnesota Oncology Hematology P A, Minneapolis, Minnesota, United States

Research Medical Center, Kansas City, Missouri, United States

Hunterdon Hematology Oncology, Flemington, New Jersey, United States

Summit Medical Group, Florham Park, New Jersey, United States

Hematology Oncology Associates of Rockland, Nyack, New York, United States

Southeastern Medical Oncology Center, Goldsboro, North Carolina, United States

Oncology Hematology Care, Cincinnati, Ohio, United States

Willamette Valley Cancer Institute and Research Center, Eugene, Oregon, United States

OHSU Knight Cancer Institute, Portland, Oregon, United States

Renovatio Clinical, El Paso, Texas, United States

Texas Oncology-Fort Worth Cancer Center, Fort Worth, Texas, United States

The University of Texas MD Anderson Cancer Center, Houston, Texas, United States

Renovatio Clinical 1, The Woodlands, Texas, United States

Texas Oncology-Gulf Coast, The Woodlands, Texas, United States

Community Cancer Trials of Utah, Ogden, Utah, United States

Virginia Cancer Specialists, Manassas, Virginia, United States

Virginia Oncology Associates, Virginia Beach, Virginia, United States

VA Puget Sound Healthcare System, Seattle, Washington, United States

Northwest Cancer Specialists PC, Vancouver, Washington, United States

QEII Health Sciences Centre, Halifax, Nova Scotia, Canada

Niagara Health System, St. Catharines, Ontario, Canada

Fakultni nemocnice Brno, Brno-Bohunice, Czechia

Fakultni nemocnice Hradec Kralove, Hradec Králové, Czechia

Fakultni nemocnice Olomouc, Olomouc, Czechia

Fakultni Nemocnice Ostrava, Ostrava - Poruba, Czechia

Fakultni nemocnice Kralovske Vinohrady, Prague, Czechia

Ustav Hematologie A Krevni Transfuze, Prague, Czechia

CHU de Clermont Ferrand, Clermont-Ferrand, France

CHU Nantes, Nantes, France

Hopital Pitie Salpetriere, Paris, France

CHU Lyon Sud, Pierre-Bénite, France

CHU de Reims, Reims, France

Institut de Cancerologie Strasbourg Europe ICANS, Strasbourg, France

Semmelweis Egyetem, Budapest, Hungary

Gyor Moson Sopron Varmegyei Petz Aladar Egyetemi Oktato Korhaz, Győr, Hungary

Szabolcs Szatmar Bereg Varmegyei Oktatokorhaz, Nyíregyháza, Hungary

University of Szeged, Szeged, Hungary

U.O. Ematologia Istituto Tumori Giovanni Paolo II, Bari, Italy

Azienda Ospedaliero-Universitaria di Ferrara Arcispedale Sant Anna, Ferrara, Italy

Azienda Ospedaliero Universitaria Careggi, Florence, Italy

Ospedale San Raffaele, Milan, Italy

ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy

Ospedale Maggiore della Carita, Novara, Italy

Universita degli Studi di Padova Azienda Ospedaliera di Pa, Padova, Italy

Ospedale Villa Sofia-Cervello, Palermo, Italy

Azienda Ospedaliera di Perugia Ospedale S.Maria della Misericordia, Perugia, Italy

Ematologia Fondazione Univ. Policlinico Gemelli Università Cattolica del Sacro Cuore, Roma, Italy

Umberto I Policlinico di Roma, Roma, Italy

Wojewodzki Szpital Specjalistyczny, Biała Podlaska, Poland

Szpital Specjalistyczny w Brzozowie, Brzozów, Poland

Szpitale Pomorskie Sp z o o, Gdynia, Poland

Swietokrzyskie Centrum Onkologii SPZOZ w Kielcach, Kielce, Poland

Samodzielny Publiczny Zaklad Opieki Zdrowotnej Szpital Uniwersytecki w Krakowie, Krakow, Poland

Wojewodzkie Wielospecjalistyczne Centrum Onkologii i Traumatologii im M Kopernika w Lodzi, Lodz, Poland

Centrum Onkologii Ziemi Lubelskiej im sw Jana z Dukli, Lublin, Poland

Hosp Univ Vall D Hebron, Barcelona, Spain

Hosp Reina Sofia, Córdoba, Spain

Hosp. Univ. Ramon Y Cajal, Madrid, Spain

Hosp. Univ. 12 de Octubre, Madrid, Spain

Hosp. Univ. Marques de Valdecilla, Santander, Spain

Hosp. Clinico Univ. de Santiago, Santiago de Compostela, Spain