Clinical trialNCT04209621TerminatedPhase 2Interventional

Duvelisib for Ibrutinib-Resistant Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma

SponsorNational Heart, Lung, and Blood Institute (NHLBI)Enrollment3Chronic Lymphocytic Leukemia (CLL)Small Lymphocytic Leukemia (SLL)

View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

Background: Chronic lymphocytic leukemia (CLL) and small lymphocytic lymphoma (SLL) are cancers often treated with the drug ibrutinib. For some people, ibrutinib stops working. Researchers want to see if adding another drug can help. Objective: To test how people with ibrutinib-resistant CLL respond to duvelisib. Eligibility: People ages 18 and older with CLL or SLL that is no longer responding to ibrutinib or has developed mutations that could stop it from working Design: Participants will be screened with: * Medical history * Physical exam * Heart tests * Blood and urine tests * CT scan. For this, participants will have a dye injected into a vein. They will lie in a machine that takes pictures of the body. * Bone marrow biopsy. For this, a needle injected into the participant s bone will remove marrow. * Optional lymph node biopsy. For this, the participants whole lymph node or part of it will be removed through the skin. * Optional lymphapheresis. For this, the participants blood is removed through a vein in one arm, the white blood cells separated out, and the blood returned through a vein in the other arm. Participants will take duvelisib twice daily by mouth. They will continue ibrutinib at their current dose for the first 6 months. They will continue to take duvelisib until their CLL/SLL stops responding or they develop intolerable side effects. Participants will take an antibiotic and antiviral medication. They may take steroids. Participants will have blood tests every 2 weeks during the first 2 months. Participants will have monthly follow-up visits during the first 6 months and every 3 months thereafter. These will include repeats of some of the screening tests.

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Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

Clare C Sun, M.D.
National Heart, Lung, and Blood Institute (NHLBI)
Principal Investigator
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A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

1 registered facility, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States

National Institutes of Health Clinical Center
Bethesda, Maryland, United States

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

The drug and biological interventions registered on this study, normalized to their RxNorm ingredient where possible.

Duvelisib →Ibrutinib →

Linked drugs open the directory filtered to KOLs working with them.clinicaltrials.gov ↗

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start: 31 Jul 2020
Primary completion: 22 Jan 2021
Completion: 22 Jan 2021
Last update posted: 9 Mar 2022
Registered enrollment: 3
Registry id: NCT04209621

clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 24 Aug 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.