British journal of haematology 2017-11
Outcomes in 370 patients with mantle cell lymphoma treated with ibrutinib: a pooled analysis from three open-label studies.
Abstract
Ibrutinib is highly active in treating mantle cell lymphoma (MCL), an aggressive B-cell lymphoma. We pooled data from three ibrutinib studies to explore the impact of baseline patient characteristics on treatment response. Patients with relapsed/refractory MCL (n = 370) treated with ibrutinib had an objective response rate (ORR) of 66% (20% complete response; 46% partial response); median duration of response (DOR), progression-free survival (PFS) and overall survival (OS) were 18·6, 12·8 and 25·0 months, respectively. Univariate analyses showed patients with one versus >one prior line of therapy had longer OS. Multivariate analyses identified that one prior line of therapy affected PFS; Eastern Cooperative Oncology Group (ECOG) performance status, simplified MCL international prognostic index (sMIPI) score, bulky disease, and blastoid histology affected OS and PFS. Patients with blastoid versus non-blastoid histology had similar time to best response, but lower ORR, DOR, PFS and OS. OS and PFS were longer in patients with better sMIPI, patients with ECOG performance status 0-1, non-bulky disease and non-blastoid histology. Additionally, the proportion of patients with poor prognostic factors increased with increasing lines of therapy. Together, results suggest that patient outcomes following treatment failure with ibrutinib are related to the natural biological evolution of the disease.
Related Questions
How do you sequence therapy in an older patient with newly-diagnosed blastoid mantle cell lymphoma with a 17p deletion?
Tricky question. There are two issues, 1. the morphology and 2. depending on how you evaluate a 17p deletion. The deletion in literature isn't as clearly associated with poor outcomes as compared to mutations. Given that there are two copies, as long as one allele is still present then would still h...
How would you treat a younger patient with relapsed mantle cell lymphoma after treatment with hyperCVAD?
In front line therapy for MCL patients, induction followed by ASCT should be the standard of care followed by rituximab maintenance and follow up for MRD.In relapsed MCL, after anthracycline and cytrabine containing therapy, BTK inhibitors appear to be the most affective agents.Results of a pooled a...
How do you manage bruising in patients on ibrutinib?
Bruising is quite common in patients treated with ibrutinib, and it seems to be a class effect that also is seen with the 2nd generation BTK inhibitors, such as acalabrutinib. It should be mentioned when consenting patients, and reassurance generally is all that is needed because the bruising is usu...