Idelalisib Study for CLL Patients Ended Early Due to Positive Findings

On October 9, Gilead Sciences Inc., announced an exciting new development for CLL patients. An independent Data Monitoring Committee (DMC) recommended that a Phase 3 study of Idelalisib in previously-treated CLL patients be ended early, due to evidence of efficacy. As Gilead noted,

“This DMC recommendation is based on a predefined interim analysis showing highly statistically significant efficacy for the primary endpoint of progression-free survival in patients receiving idelalisib plus rituximab compared to those receiving rituximab alone. The safety profile of idelalisib was acceptable and consistent with prior experience in combination with rituximab in previously treated CLL. Gilead has informed the U.S. Food and Drug Administration (FDA) of the plan to end the study and will engage in a dialogue with the FDA regarding a regulatory filing in CLL.”

Norbert W. Bischofberger, PhD, Gilead’s Executive Vice President , Research and Development and Chief Scientific Officer explained,

“This is the first Phase 3 study to report positive results for a new class of targeted therapies that inhibit B-cell receptor signaling as a major component of their mechanism of action, an important area of focus in the development of chemotherapy-free regimens in CLL and other B-cell malignancies. We extend thanks to the investigative sites and to the other research collaborators participating in this study, as well as to the patients who volunteered, and we look forward to sharing these data with the hematology community.”

Prominent researchers involved in this study include the Lymphoma Program’s Dr. Richard Furman. Further data from this study will be submitted for upcoming scientific conferences. Please look to this space to follow up with any further announcements regarding this new development.

 Gilead’s full press release can be found here.

New Clinical Trial: GS-1101 in Combination with Bendamustine and Rituximab for Previously Treated CLL

Update: this study is closed to enrollment. 

The Weill Cornell Lymphoma Program is now recruiting men and women with previously treated, recurrent chronic lymphocytic leukemia (CLL) for a clinical trial evaluating the experimental drug GS-1101 (also called Idelalisib, formerly called CAL-101), combined with bendamustine and rituximab, in treating CLL. The study sponsor is Gilead Sciences, Inc, and the principal investigator at Weill Cornell is Dr. Richard Furman. For more information about the study, please call Amelyn Rodgriguez, RN at (212) 746-1362 or e-mail Amelyn at amr2017@med.cornell.edu.

Key Eligibility
  • Age 18 and older
  • Diagnosis of B-cell chronic lymphocytic leukemia (CLL)
  • Previously treated for CLL
  • Detailed eligibility reviewed when you contact the study team
Study Details

GS-1101 (CAL-101) is a pill designed to block some of the cell functions that cause CLL to grow and survive and may help control the disease. Rituximab and bendamustine are approved by the FDA as a treatment for CLL. The study will help determine whether adding GS-1101 (CAL-101) to the standard treatment of rituximab and bendamustine will have a better effect on controlling CLL.

Study participants will be randomly assigned to one of two treatment groups:

  • Group A: GS-1101 and rituximab/bendamustine
  • Group B: Rituximab/bendamustine and placebo (an inactive pill that looks like GS-1101 but contains no medicine)

After 20 weeks of therapy with rituximab, bendamustine and GS-1101 or placebo, participants will continue with GS-1101 or placebo as long as their CLL is controlled.

New Clinical Trial: GS-1101 (CAL-101) + Rituximab for Previously Treated CLL

A Phase 3, Randomized, Double-Blind, Placebo-Controlled Study Evaluating the Efficacy and Safety of GS 1101 (CAL 101) in Combination with Rituximab for Patients with Previously Treated Chronic Lymphocytic Leukemia

Update: this study is closed to enrollment. 

The Weill Cornell Lymphoma Program is now enrolling patients in a new clinical trial for people with previously treated Chronic Lymphocytic Leukemia (CLL). The sponsor is Gilead Sciences, and the principal investigator at Weill Cornell is Dr. Richard Furman. For more information about the study, please call Amelyn Rodriguez, RN at (212) 746-1362 or email Amelyn at amr2017@med.cornell.edu.

Study Details

The study will evaluate the effectiveness of the experimental drug GS-1101 (CAL-101) combined with rituximab in treating CLL.

GS-1101 (CAL-101) is a pill designed to block some of the cell functions that cause CLL to grow and survive and may help control the disease. Rituximab is FDA-approved as a treatment for CLL. It is possible that giving rituximab together with GS-1101 may have more activity against the CLL disease process than giving rituximab alone.

Study participants will be randomly assigned to one of two treatment groups:

  • Group A: rituximab and GS-1101
  • Group B: rituximab and placebo (an inactive pill that looks like GS-1101 but contains no medicine)

Treatment Plan

All study participants will receive rituximab via infusion 8 times over 24 weeks: Day 1, then Weeks 2, 4, 6, 8, 12, 16 and 20.

Participants will take GS-1101 or placebo twice daily for 24 weeks.

After 24 weeks of therapy with rituximab and GS-1101 or placebo, participants will continue on GS-1101 or placebo as long as their CLL is controlled. If their CLL gets worse, participants may be able to take part in a separate extension study where they receive GS-1101 at a higher or lower dose. Thus, everyone who is treated in this study has an opportunity to receive active GS-1101, either in the main study or the extension study.