Clinical Trial: Ibrutinib With or Without Bortezomib and Dexamethasone in Treating Patients With Relapsed or Refractory Immunoglobulin Light Chain Amyloidosis

Study Status: Not yet recruiting
Recruit Status: Not yet recruiting
Study Type: Interventional

Official Title: Phase II Study of Ibrutinib With or Without Bortezomib and Dexamethasone for the Treatment of Patients With Relapsed/Refractory Immunoglobulin Light Chain Amyloidosis

Brief Summary: This phase II trial studies how well ibrutinib with or without bortezomib and dexamethasone works in treating patients with immunoglobulin light chain amyloidosis that has come back after a period of improvement or that does not respond to treatment. Ibrutinib and bortezomib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as dexamethasone, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving ibrutinib with or without bortezomib and dexamethasone may work better in treating patients with relapsed or refractory immunoglobulin light chain amyloidosis.

Detailed Summary:

PRIMARY OBJECTIVES:

I. To evaluate the overall hematologic response rate (stringent complete response [sCR] + amyloid complete response [ACR]+ very good partial response [VGPR] + partial response [PR]) during the first 6 cycles for ibrutinib with bortezomib and dexamethasone added for lack of response in patients with amyloid light chain (AL).

SECONDARY OBJECTIVES:

I. To evaluate overall hematologic response rate (sCR+ACR+VGPR+PR) of single agent ibrutinib in patients with AL.

II. To evaluate overall hematologic response rate (sCR+ACR+VGPR+PR) to ibrutinib + bortezomib and dexamethasone (Vd) in subjects with progressive disease after initial response to single agent ibrutinib.

III. To describe the toxicities associated with ibrutinib, alone and in combination with Vd, in patients with AL.

IV. To determine the organ response in AL patients treated with ibrutinib alone and in combination with Vd.

V. To determine 3 year progression free survival of AL patients on the study.

TERTIARY OBJECTIVES:

I. To characterize health related quality of life of patients. II. To determine the caregiver and patient disease burden. III. To determine the correlation between cardiac biomarkers and hematologic response to therapy.

IV. To evaluate the effect of ibrutinib on AL microenvironment. V. To characterize BTK expression in neoplastic plasma cells. VI. To evaluate the characterization of CD38 expression on neoplastic plasma cells.

Will include a confirmed stringent complete response, amyloid complete response, very good partial response, and partial response. Confirmation will be defined as a response that is maintained on two consecutive evaluations at least 2 weeks apart. Progression will be defined as either hematologic or organ progression. The proportion of successes will be estimated by the number of successes divided by the total number of evaluable patients. Confidence intervals for the true success proportion will be calculated according to the approach of Duffy and Santner.



Original Primary Outcome: Same as current

Current Secondary Outcome:

  • Incidence of adverse events [ Time Frame: Up to 3 years ]
    The maximum grade for each type of adverse event will be recorded for each patient, and frequency tables will be reviewed to determine patterns. Additionally, the relationship of the adverse event(s) to the study treatment will be taken into consideration. Adverse events will be summarized separately for single agent Ibrutinib and combination therapy.
  • Organ response rate [ Time Frame: Up to 3 years ]
    Will be estimated by the total number of patients who have an organ response divided by the total number of evaluable patients who had involvement in that organ at baseline. Exact binomial 95% confidence intervals for the true organ Up to response rate will be calculated.
  • Overall hematologic response rate for single agent ibrutinib [ Time Frame: Up to 6 months ]
    Will be estimated by the total number of patients who achieve a partial response, very good partial response, stringent complete response, or amyloid complete response while receiving single agent ibrutinib divided by the total number of evaluable patients. Exact binomial 95% confidence intervals for the true overall hematologic response rate will be calculated.
  • Progression-free survival [ Time Frame: From registration to the earliest date of documentation of disease progression (on single agent or combination therapy) or death due to any cause, assessed up to 3 years ]
    Will be estimated using the method of Kaplan-Meier.


Original Secondary Outcome: Same as current

Information By: Mayo Clinic

Dates:
Date Received: April 21, 2017
Date Started: May 15, 2017
Date Completion: April 2022
Last Updated: April 21, 2017
Last Verified: April 2017