Working…
COVID-19 is an emerging, rapidly evolving situation.
Get the latest public health information from CDC: https://www.coronavirus.gov.

Get the latest research information from NIH: https://www.nih.gov/coronavirus.
ClinicalTrials.gov
ClinicalTrials.gov Menu

Efficacy and Safety of Idelalisib in Combination With Ofatumumab for Previously Treated Chronic Lymphocytic Leukemia

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT01659021
Recruitment Status : Terminated
First Posted : August 7, 2012
Results First Posted : March 31, 2017
Last Update Posted : August 14, 2019
Sponsor:
Information provided by (Responsible Party):
Gilead Sciences

Brief Summary:
The primary objective of this study is to evaluate the effect of the addition of idelalisib to ofatumumab on progression-free survival (PFS) in participants with previously treated chronic lymphocytic leukemia (CLL).

Condition or disease Intervention/treatment Phase
Chronic Lymphocytic Leukemia Drug: Idelalisib Drug: Ofatumumab Phase 3

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 261 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Phase 3, Randomized, Controlled Study Evaluating the Efficacy and Safety of Idelalisib (GS-1101) in Combination With Ofatumumab for Previously Treated Chronic Lymphocytic Leukemia
Actual Study Start Date : December 4, 2012
Actual Primary Completion Date : August 15, 2018
Actual Study Completion Date : August 15, 2018


Arm Intervention/treatment
Experimental: Idelalisib+ofatumumab

Randomized Initial Therapy (24 weeks): Idelalisib + ofatumumab for a total of 12 infusions (300 mg on Day 1, followed by 1000 mg weekly for 7 weeks, and then 1000 mg every 4 weeks for 4 doses)

Continuing Therapy/Observation: Idelalisib 150 mg tablets twice daily until the earliest of participant withdrawal from study, definitive progression of CLL, intolerable idelalisib-related toxicity, pregnancy or initiation of breast feeding, substantial noncompliance with study procedures, or study discontinuation.

Long-Term Follow-up: Participants were followed for up to 5 years. Information on medical status, anti-tumor treatments, secondary malignancies, and survival status were collected annually during a routine clinic visit or other contact, such as telephone.

Drug: Idelalisib
150 mg tablets administered orally twice daily
Other Names:
  • Zydelig®
  • GS-1101
  • CAL-101

Drug: Ofatumumab
Administered intravenously
Other Name: Arzerra®

Active Comparator: Ofatumumab

Randomized Initial Therapy (24 weeks): Ofatumumab for a total of 12 infusions (300 mg on Day 1, followed by 2000 mg weekly for 7 weeks, and then 2000 mg every 4 weeks for 4 doses)

Continuing Therapy/Observation: Observation until the earliest of participant withdrawal from study, definitive progression of CLL, intolerable idelalisib-related toxicity, pregnancy or initiation of breast feeding, substantial noncompliance with study procedures, or study discontinuation.

Long-Term Follow-up: Participants were followed for up to 5 years. Information on medical status, anti-tumor treatments, secondary malignancies, and survival status were collected annually during a routine clinic visit or other contact, such as telephone.

Drug: Ofatumumab
Administered intravenously
Other Name: Arzerra®




Primary Outcome Measures :
  1. Progression-Free Survival [ Time Frame: Randomization to End of Study (up to 60 months) ]
    Progression-free survival (PFS) was defined as the interval from randomization to the earlier of the first documentation of definitive disease progression or death from any cause. Definitive disease progression was CLL progression based on standard criteria (other than lymphocytosis alone) as defined by the 2008 update of the International Workshop on CLL guidelines, ie, appearance of any new lesion; increase by ≥ 50% in the sum of the products of the perpendicular diameters of measured lymph nodes (SPD); new or ≥ 50% enlargement of liver or spleen; transformation to a more aggressive histology (eg, Richter's or prolymphocytic transformation); reduction in the number of blood cells (cytopenia) attributable to CLL. PFS was analyzed using Kaplan-Meier (KM) estimates.


Secondary Outcome Measures :
  1. Overall Response Rate [ Time Frame: Randomization to End of Study (up to 60 months) ]

    Overall response rate was defined as the percentage of participants who achieved a best overall response of complete response or partial response.

    • Complete response was defined as no lymphadenopathy, hepatomegaly, splenomegaly; normal complete blood count; confirmed by bone marrow aspirate & biopsy.
    • Partial response was defined as >1 of the following criteria: a 50% decrease in peripheral blood lymphocytes, lymphadenopathy, liver size, spleen size; plus ≥ 1 of the following: ≥ 1500/μL absolute neutrophil count, > 100000/μL platelets, > 11.0 g/dL hemoglobin or 50% improvement for either of these parameters without transfusions or growth factors. Overall response rate was analyzed using KM estimates.

  2. Lymph Node Response Rate [ Time Frame: Randomization to End of Study (up to 60 months) ]
    Lymph node response rate was defined as the proportion of participants who achieved a ≥ 50% decrease from baseline in the sum of the products of the greatest perpendicular diameters (SPD) of index lymph nodes.

  3. Overall Survival [ Time Frame: Randomization to Last Long-Term Follow-Up Visit (up to maximum of 5 years) ]
    Overall survival was defined as the interval from randomization to death from any cause. Overall survival was analyzed using KM estimates.

  4. Progression-Free Survival in Subgroup of Participants With Chromosome 17p Deletion and/or TP53 Mutation [ Time Frame: Randomization to End of Study (up to 60 months) ]
    Progression-free survival in subgroup of participants with chromosome 17p deletion and/or TP53 mutation was analyzed using KM estimates.

  5. Complete Response Rate [ Time Frame: Randomization to End of Study (up to 60 months) ]
    Complete response rate was defined as the percentage of participants who achieve a complete response and maintain their response for at least 8 weeks (with a 1-week window).



Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Layout table for eligibility information
Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Key Inclusion Criteria:

  • Adults with previously treated recurrent CLL who have measurable lymphadenopathy
  • Require therapy for CLL
  • Have experienced CLL progression < 24 months since the completion of the last prior therapy
  • Have disease that is not refractory to ofatumumab

Note: Other protocol defined Inclusion/Exclusion criteria may apply.


Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01659021


Locations
Show Show 80 study locations
Sponsors and Collaborators
Gilead Sciences
Investigators
Layout table for investigator information
Study Director: Gilead Study Director Gilead Sciences
  Study Documents (Full-Text)

Documents provided by Gilead Sciences:
Study Protocol  [PDF] August 30, 2017
Statistical Analysis Plan  [PDF] September 29, 2014

Publications of Results:
Jones J, Robak T, Wach M, Brown JR, Menter AR, Vandenberghe E, et al. Updated results of a phase 3 randomized, controlled study of idelalisib in combination with ofatumumab for previously treated chronic lymphocytic leukemia (CLL) [Poster 7515]. American Society of Clinical Oncology (ASCO) 52nd Annual Meeting; 2016 02 - 06 June; Chicago, IL.
Jones JA, Wach M, Robak T, Brown JR, Menter AR, Vanderberghe E, et al. Results of a Phase 3 Randomized, Controlled Study Evaluating the Efficacy and Safety of Idelalisib (IDELA) in Combination with Ofatumumab (OFA) for Previously Treated Chronic Lymphocytic Leukemia (CLL) [Poster 7023]. American Society of Clinical Oncology (ASCO) 51st Annual Meeting; 2015 29 May - 02 June; Chicago, IL.
Robak T, Jones J, Wach M, Brown JR, Menter AR, Vandenberghe E, et al. Updated results of a phase 3 randomized, controlled study of idelalisib in combination with ofatumumab for previously treated chronic lymphocytic leukemia (CLL) [Poster 213]. 21st Congress of the European Hematology Association (EHA); 2015 09-12 June; Copenhagen, Denmark.
Robak T, Wach M, Jones J, Owen C, Brown J, Menter A, et al. Results Of A Phase 3 Randomized Controlled Study Evaluating The Efficacy And Safety Of Idelalisib (Idela) In Combination With Ofatumumab (Ofa) For Previously Treated Chronic Lymphocytic Leukemia (CLL) [Poster LB598]. 20th Congress of the European Hematology Association (EHA); 2015 11-14 June; Vienna, Austria.
Flinn I, Kimby E, Cotter FE, Giles FJ, Janssens A, Pulczynski EJ, et al. A Phase 3, Randomized, Controlled Study Evaluating the Efficacy and Safety of Idelalisib (GS-1101) in Combination with Ofatumumab for Previously Treated Chronic Lymphocytic Leukemia (CLL) [Poster TPS7131]. American Society of Clinical Oncology (ASCO); 2013 May 31-June 4; Chicago, IL.

Layout table for additonal information
Responsible Party: Gilead Sciences
ClinicalTrials.gov Identifier: NCT01659021    
Other Study ID Numbers: GS-US-312-0119
2012-001236-65 ( EudraCT Number )
First Posted: August 7, 2012    Key Record Dates
Results First Posted: March 31, 2017
Last Update Posted: August 14, 2019
Last Verified: August 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Yes
Plan Description: Qualified external researchers may request IPD for this study after study completion. For more information, please visit our website at http://www.gilead.com/research/disclosure-and-transparency.
Supporting Materials: Study Protocol
Statistical Analysis Plan (SAP)
Time Frame: 18 months after study completion
Access Criteria: A secured external environment with username, password, and RSA code.
URL: http://www.gilead.com/research/disclosure-and-transparency

Layout table for additional information
Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Gilead Sciences:
CLL
Chronic Lymphocytic Leukemia
GS-1101
CAL-101
Ofatumumab
Additional relevant MeSH terms:
Layout table for MeSH terms
Leukemia
Leukemia, Lymphoid
Leukemia, Lymphocytic, Chronic, B-Cell
Neoplasms by Histologic Type
Neoplasms
Lymphoproliferative Disorders
Lymphatic Diseases
Immunoproliferative Disorders
Immune System Diseases
Leukemia, B-Cell
Ofatumumab
Idelalisib
Antineoplastic Agents
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action