Intermediate Results of Prospective Observational Study: The 2-year Experience of Ibrutinib Therapy in Relapsed/Refractory Mantle Cell Lymphoma in Clinical Practice

Aim. To assess efficacy and toxicity of ibrutinib monotherapy in patients with relapsed/refractory mantle cell lymphoma (MCL).

Materials & Methods. In this group of patients ibrutinib has been used since April 2016. Ibrutinib administration criteria were the age > 18 years and the confirmed MCL diagnosis with nuclear hyperexpression of cyclin D1 and t(11;14)(q13;q32) translocation. Poor physical status, pancytopenia, infectious complications (except for life-threatening conditions), blastoid variant, and the number of previous treatment lines were not regarded as contraindications to ibrutinib therapy. Oral ibrutinib was administered once a day at a dose of 560 mg before progression and until intolerable toxicity was observed.

Results. From April 20, 2016 to April 6, 2018 ibrutinib therapy was provided to 42 patients with relapsed/refractory MCL. The median age was 69 years (range 40–81); 64 % of patients were men; ECOG > 2 was registered in 14 % of patients; 38 % of patients had blastoid variant; the median number of previous treatment lines was 2 (range 1–11). The overall response rate was 85 % (35 % were in complete remission); 57 % (24/42) of patients remain on ibrutinib treatment for the period of 4–667 days. The median event-free survival (EFS) was 365 days (95% confidence interval was 31–698 days). The median overall survival was not achieved. In blastoid variant the median EFS was 92 days, in the alternative group the median was not achieved and EFS was 76 % for 12 months (p < 0.001). In the majority of cases ibrutinib was well tolerated by patients. The most common complications were myalgia and muscle cramps (57 % cases), diarrhea (46 %, and grade 3 in 5 % cases), hemorrhagic complications (63 %, all of them of grade 1–2), and arrhythmia (7 %). Infectious complications were reported in 31 % of patients. In one case the start of ibrutinib treatment appeared to be problematic due to neutropenia of grade 4. Relative dose intensity was > 98 % (range 91.6–100 %). In 10 (24 %) patients ibrutinib treatment had to be adjusted (dose reduction or treatment interruption) due to toxicity and planned surgeries. None of ibrutinib recipients had to completely discontinue ibrutinib therapy due to complications.

Conclusion. These data on the use of ibrutinib in actual clinical practice are comparable with the results of international multicenter studies (PCYC-1104, SPARK, and RAY). Reduced toxicity profile and rather high speed of antitumor response allow for ibrutinib administration in cases of poor physical status, low blood count, and even infectious complications. However, some adverse effects are manifested not earlier than after 6-month treatment, which calls for continuous monitoring, especially when preparing for surgeries.

• Vladimir Ivanovich Vorob’ev SP Botkin Municipal Clinical Hospital, 5 2-i Botkinskii pr-d, Moscow, Russian Federation, 125284 ; ГБУЗ «Городская клиническая больница им. С.П. Боткина ДЗМ», 2-й Боткинский пр-д, д. 5, Москва, Российская Федерация, 125284
• V.A. Zherebtsova SP Botkin Municipal Clinical Hospital, 5 2-i Botkinskii pr-d, Moscow, Russian Federation, 125284 ; ГБУЗ «Городская клиническая больница им. С.П. Боткина ДЗМ», 2-й Боткинский пр-д, д. 5, Москва, Российская Федерация, 125284
• E.I. Dubrovin SP Botkin Municipal Clinical Hospital, 5 2-i Botkinskii pr-d, Moscow, Russian Federation, 125284 ; ГБУЗ «Городская клиническая больница им. С.П. Боткина ДЗМ», 2-й Боткинский пр-д, д. 5, Москва, Российская Федерация, 125284
• L.A. Bychenkova SP Botkin Municipal Clinical Hospital, 5 2-i Botkinskii pr-d, Moscow, Russian Federation, 125284 ; ГБУЗ «Городская клиническая больница им. С.П. Боткина ДЗМ», 2-й Боткинский пр-д, д. 5, Москва, Российская Федерация, 125284
• Yu.B. Kochkareva SP Botkin Municipal Clinical Hospital, 5 2-i Botkinskii pr-d, Moscow, Russian Federation, 125284 ; ГБУЗ «Городская клиническая больница им. С.П. Боткина ДЗМ», 2-й Боткинский пр-д, д. 5, Москва, Российская Федерация, 125284
• L.A. Mukha SP Botkin Municipal Clinical Hospital, 5 2-i Botkinskii pr-d, Moscow, Russian Federation, 125284 ; ГБУЗ «Городская клиническая больница им. С.П. Боткина ДЗМ», 2-й Боткинский пр-д, д. 5, Москва, Российская Федерация, 125284
• V.L. Ivanova SP Botkin Municipal Clinical Hospital, 5 2-i Botkinskii pr-d, Moscow, Russian Federation, 125284 ; ГБУЗ «Городская клиническая больница им. С.П. Боткина ДЗМ», 2-й Боткинский пр-д, д. 5, Москва, Российская Федерация, 125284
• N.K. Khuazheva SP Botkin Municipal Clinical Hospital, 5 2-i Botkinskii pr-d, Moscow, Russian Federation, 125284 ; ГБУЗ «Городская клиническая больница им. С.П. Боткина ДЗМ», 2-й Боткинский пр-д, д. 5, Москва, Российская Федерация, 125284
• V.V. Ptushkin SP Botkin Municipal Clinical Hospital, 5 2-i Botkinskii pr-d, Moscow, Russian Federation, 125284 ; ГБУЗ «Городская клиническая больница им. С.П. Боткина ДЗМ», 2-й Боткинский пр-д, д. 5, Москва, Российская Федерация, 125284

1. Swerdlow SH, Campo E, Harris NL, et al. (eds) WHO Classification of Tumours of Haematopoietic and Lymphoid Tissues. 4th edition. Lyon: IARC Press; 2008.
2. Zhou Y, Wang H, Fang W, et al. Incidence trends of mantle cell lymphoma in the United States between 1992 and 2004. Cancer. 2008;113(4):791–8. doi: 10.1002/cncr.23608. DOI: https://doi.org/10.1002/cncr.23608
3. Smith A, Roman E, Appleton S, et al. Impact of novel therapies for mantle cell lymphoma in the real world setting: a report from the UK’s Haematological Malignancy Research Network (HMRN). Br J Haemotol. 2018;181(2):215–28. doi: 10.1111/bjh.15170. DOI: https://doi.org/10.1111/bjh.15170
4. Leux C, Maynadie M, Troussard X, et al. Mantle cell lymphoma epidemiology: a population-based study in France. Ann Hematol. 2014;93(8):1327–33. doi: 10.1007/s00277-014-2049-5. DOI: https://doi.org/10.1007/s00277-014-2049-5
5. Geisler CH, Kolstad A, Laurell A, et al. Nordic MCL2 trial update: six-year follow-up after intensive immunochemotherapy for untreated mantle cell lymphoma followed by BEAM or BEAC + autologous stem-cell support: still very long survival but late relapses do occur. Br J Haematol. 2012;158(3):355–62. doi: 10.1111/j.1365-2141.2012.09174.x. DOI: https://doi.org/10.1111/j.1365-2141.2012.09174.x
6. Romaguera JE, Fayad LE, Feng L, et al. Ten-year follow-up after intense chemoimmunotherapy with Rituximab-HyperCVAD alternating with Rituximab-high dose methotrexate/cytarabine (R-MA) and without stem cell transplantation in patients with untreated aggressive mantle cell lymphoma. Br J Haematol. 2010;150(2):200–8. doi: 10.1111/j.1365-2141.2010.08228.x. DOI: https://doi.org/10.1111/j.1365-2141.2010.08228.x
7. Merli F, Luminari S, Ilariucci F, et al. Rituximab plus HyperCVAD alternating with high dose cytarabine and methotrexate for the initial treatment of patients with mantle cell lymphoma, a multicentre trial from Gruppo Italiano Studio Linfomi. Br J Haematol. 2012;156(3):346–53. doi: 10.1111/j.1365-2141.2011.08958.x. DOI: https://doi.org/10.1111/j.1365-2141.2011.08958.x
8. Le Gouill S, Thieblemont C, Oberic L, et al. Rituximab after Autologous Stem-Cell Transplantation in Mantle-Cell Lymphoma. N Engl J Med. 2017;377(13):1250–60. doi: 10.1056/nejmoa1701769. DOI: https://doi.org/10.1056/NEJMoa1701769
9. Воробьев В.И., Кравченко С.К., Гемджян Э.Г. и др. Мантийноклеточная лимфома: программное лечение первичных больных в возрасте до 65 лет. Клиническая онкогематология. 2013;6(3):274–81. DOI: https://doi.org/10.21320/2500-2139-2013-6-3-274-281
10. [Vorob’ev VI, Kravchenko SK, Gemdzhian EG, et al. Mantle cell lymphoma: program therapy for untreated patients under 65 years. Klinicheskaya onkogematologiya. 2013;6(3):274–81. (In Russ)]
11. Rummel MJ, Niederle N, Maschmeyer G, et al. Bendamustine plus rituximab versus CHOP plus rituximab as first-line treatment for patients with indolent and mantle-cell lymphomas: an open-label, multicentre, randomised, phase 3 non-inferiority trial. 2013;381(9873):1203–10. doi: 10.1016/s0140-6736(12)61763-2. DOI: https://doi.org/10.1016/S0140-6736(12)61763-2
12. Flinn IW, van der Jagt R, Kahl BS, et al. Randomized trial of bendamustine-rituximab or R-CHOP/R-CVP in first-line treatment of indolent NHL or MCL: the BRIGHT study. Blood. 2014;123(19):2944–52. doi: 10.1182/blood-2013-11-531327. DOI: https://doi.org/10.1182/blood-2013-11-531327
13. Kluin-Nelemans HC, Hoster E, Hermine O, et al. Treatment of older patients with mantle-cell lymphoma. N Engl J Med. 2012;367(6):520–31. doi: 10.1056/nejmoa1200920. DOI: https://doi.org/10.1056/NEJMoa1200920
14. Robak T, Huang H, Jin J, et al. Bortezomib-based therapy for newly diagnosed mantle-cell lymphoma. N Engl J Med. 2015;372(10):944–53. doi: 10.1056/nejmoa1412096. DOI: https://doi.org/10.1056/NEJMoa1412096
15. Fisher RI, Bernstein SH, Kahl BS, et al. Multicenter phase II study of bortezomib in patients with relapsed or refractory mantle cell lymphoma. J Clin Oncol, 2006;24(30):4867–74. doi: 10.1200/jco.2006.07.9665. DOI: https://doi.org/10.1200/JCO.2006.07.9665
16. Goy A, Sinha R, Williams ME, et al. Single-agent lenalidomide in patients with mantle-cell lymphoma who relapsed or progressed after or were refractory to bortezomib: phase II MCL-001 (EMERGE) study. J Clin Oncol. 2013;31(29):3688–95. doi: 10.1200/jco.2013.49.2835. DOI: https://doi.org/10.1200/JCO.2013.49.2835
17. Dreyling M, Jurczak W, Jerkeman M, et al. Ibrutinib versus temsirolimus in patients with relapsed or refractory mantle-cell lymphoma: an international, randomised, open-label, phase 3 study. Lancet. 2016;387(10020):770–8. doi: 10.1016/s0140-6736(15)00667-4. DOI: https://doi.org/10.1016/S0140-6736(15)00667-4
18. Wang ML, Rule S, Martin P, et al. Targeting BTK with ibrutinib in relapsed or refractory mantle-cell lymphoma. N Engl J Med. 2013,369(6):507–16. doi: 10.1056/nejmoa1306220. DOI: https://doi.org/10.1056/NEJMoa1306220
19. Davids SM, Roberts AW, Seymour JF, et al. Phase I First-in-Human Study of Venetoclax in Patients with Relapsed or Refractory Non-Hodgkin Lymphoma. J Clin Oncol. 2017;35(8):826–33. doi: 10.1200/jco.2016.70.4320. DOI: https://doi.org/10.1200/JCO.2017.35.15_suppl.e19041
20. Khan WN. Colonel Bruton’s kinase defined the molecular basis of X-linked agammaglobulinemia, the first primary immunodeficiency. J Immunol. 2012;188(7):2933–5. doi: 10.4049/jimmunol.1200490. DOI: https://doi.org/10.4049/jimmunol.1200490
21. Herrera AF, Jacobsen ED. Ibrutinib for the treatment of mantle cell lymphoma. Clin Cancer Res. 2014;20(21):5365–71. doi: 10.1158/1078-0432.ccr-14-0010. DOI: https://doi.org/10.1158/1078-0432.CCR-14-0010
22. Honigberg LA, Smith AM, Sirisawad M, et al. The Bruton tyrosine kinase inhibitor PCI-32765 blocks B-cell activation and is efficacious in models of autoimmune disease and B-cell malignancy. Proc Natl Acad Sci USA. 2010;107(29):13075–80. doi: 10.1073/pnas.1004594107. DOI: https://doi.org/10.1073/pnas.1004594107
23. Cinar M, Hamedani F, Mo Z, et al. Bruton tyrosine kinase is commonly over expressed in mantle cell lymphoma and its attenuation by Ibrutinib induces apoptosis. Leuk Res. 2013;37(10):1271–7. doi: 10.1016/j.leukres.2013.07.028. DOI: https://doi.org/10.1016/j.leukres.2013.07.028
24. de Rooij MFM, Kuil A, Geest CR, et al. The clinically active BTK inhibitor PCI-32765 targets B-cell receptor- and chemokine-controlled adhesion and migration in chronic lymphocytic leukemia. Blood. 2012;119(11):2590–4. doi: 10.1182/blood-2011-11-390989. DOI: https://doi.org/10.1182/blood-2011-11-390989
25. Ponader S, Chen S-S, Buggy JJ, et al. The Bruton tyrosine kinase inhibitor PCI-32765 thwarts chronic lymphocytic leukemia cell survival and tissue homing in vitro and in vivo. Blood. 2012;119(5):1182–9. doi: 10.1182/blood-2011-10-386417. DOI: https://doi.org/10.1182/blood-2011-10-386417
26. Buggy JJ, Elias L. Bruton tyrosine kinase (BTK) and its role in B-cell malignancy. Int Rev Immunol. 2012;31(2):119–32. doi: 10.3109/08830185.2012.664797. DOI: https://doi.org/10.3109/08830185.2012.664797
27. Herman SE, Gordon AL, Hertlein E, et al. Bruton tyrosine kinase represents a promising therapeutic target for treatment of chronic lymphocytic leukemia and is effectively targeted by PCI-32765. Blood. 2011;117(23):6287–96. doi: 10.1182/blood-2011-01-328484. DOI: https://doi.org/10.1182/blood-2011-01-328484
28. Cheng S, Ma J, Guo A, et al. BTK inhibition targets in vivo CLL proliferation through its effects on B-cell receptor signaling activity. Leukemia. 2014;28(3):649–57. doi: 10.1038/leu.2013.358. DOI: https://doi.org/10.1038/leu.2013.358
29. Advani RH, Buggy JJ, Sharman JP, et al. Bruton tyrosine kinase inhibitor ibrutinib (PCI-32765) has significant activity in patients with relapsed/refractory B-cell malignancies. J Clin Oncol. 2013;31(1):88–94. doi: 10.1200/jco.2012.42.7906. DOI: https://doi.org/10.1200/JCO.2012.42.7906
30. Wang M, Rule S, Martin P, et al. Single-agent ibrutinib demonstrates safety and durability of response at 2 years follow-up in patients with relapsed or refractory mantle cell lymphoma: updated results of an international, multicenter, open-label phase 2 study. Blood. 2014;124(21):4453, abstract. DOI: https://doi.org/10.1182/blood.V124.21.4453.4453
31. Cheson BD, Fisher RI, Barrington SF, et al. Recommendations for initial evaluation, staging, and response assessment of Hodgkin and non-Hodgkin lymphoma: the Lugano classification. J Clin Oncol. 2014;32(27):3059–68. doi: 10.1200/jco.2013.54.8800. DOI: https://doi.org/10.1200/JCO.2013.54.8800
32. Rule S, Dreyling M, Goy A, et al. Outcomes in 370 patients with mantle cell lymphoma treated with ibrutinib: a pooled analysis from three open-label studies. Br J Haematol. 2017;179(3):430–8. doi: 10.1111/bjh.14870. DOI: https://doi.org/10.1111/bjh.14870
33. Wang ML, Rule S, Martin P, et al. Targeting BTK with ibrutinib in relapsed or refractory mantle-cell lymphoma. N Engl J Med. 2013;369(6):507–16. doi: 10.1056/nejmoa1306220. DOI: https://doi.org/10.1056/NEJMoa1306220
34. Cheah CY, Chihara D, Romaguera JE, et al. Patients with mantle cell lymphoma failing ibrutinib are unlikely to respond to salvage chemotherapy and have poor outcomes. Ann Oncol. 2015;26(6):1175–9. doi: 10.1093/annonc/mdv111. DOI: https://doi.org/10.1093/annonc/mdv111
35. Martin P, Maddocks K, Noto K, et al. Poor overall survival of patients with ibrutinib-resistant mantle cell lymphoma. Blood. 2014;124(21):3047, abstract. DOI: https://doi.org/10.1182/blood.V124.21.3047.3047
36. Balasubramanian S, Schaffer M, Deraedt W, et al. Mutational analysis of patients with primary resistance to single-agent ibrutinib in relapsed or refractory mantle cell lymphoma (MCL). Blood. 2014;124(21):78, abstract. DOI: https://doi.org/10.1182/blood.V124.21.78.78
37. Woyach JA, Furman RR, Liu T-M, et al. Resistance mechanisms for the Bruton’s tyrosine kinase inhibitor ibrutinib. N Engl J Med. 2014;370(24):2286–94. doi: 10.1056/nejmoa1400029. DOI: https://doi.org/10.1056/NEJMoa1400029
38. Sarkozy C, Traverse-Glehen A, Bachy E, et al. Comparative Effectiveness of Single-Agent Ibrutinib in the Ray Trial Versus Real-World Treatment in the Lyon-Sud Database in Patients with Relapsed or Refractory Mantle Cell Lymphoma. Blood. 2017;130: 2770, abstract.