Mantle cell lymphoma

Mantle cell lymphoma (MCL) is a type of non-Hodgkin's lymphoma (NHL), comprising about 6% of NHL cases.[1][2] There are only about 15,000 patients presently in the United States with mantle cell lymphoma. It is named for the mantle zone of the lymph nodes.

Mantle cell lymphoma
Micrograph showing mantle cell lymphoma (bottom of image) in a biopsy of the terminal ileum. H&E stain.
SpecialtyHematology and oncology

MCL is a subtype of B-cell lymphoma, due to CD5 positive antigen-naive pregerminal center B-cell within the mantle zone that surrounds normal germinal center follicles. MCL cells generally over-express cyclin D1 due to a t(11:14)[3] chromosomal translocation in the DNA. Specifically, the translocation is at t(11;14)(q13;q32).[4][5]

Lymph nodes of the head and neck, from Gray's Anatomy (click image to enlarge)

Signs and symptoms

At diagnosis, patients typically are in their 60s and present to their physician with advanced disease. About half have B symptoms such as fever, night sweats, or unexplained weight loss (over 10% of body weight). Enlarged lymph nodes (for example, a "bump" on the neck, armpits or groin) or enlargement of the spleen are usually present. Bone marrow, liver and gastrointestinal tract involvement occurs relatively early in the course of the disease.[6] Mantle cell lymphoma has been reported in rare cases to be associated with severe allergic reactions to mosquito bites. These reactions involve extensive allergic reactions to mosquito bites which range from greatly enlarged bite sites that may be painful and involve necrosis to systemic symptoms (e.g. fever, swollen lymph nodes, abdominal pain, and diarrhea), or, in extremely rare cases, to life-threatening anaphylaxis. In several of these cases, the mosquito bite allergy (MBA) reaction occurred prior to the diagnosis of MCL suggesting that MBA can be a manifestation of early-developing mantle cell lymphoma.[7][8]

Pathogenesis

MCL, like most cancers, results from the acquisition of a combination of (non-inherited) genetic mutations in somatic cells. This leads to a clonal expansion of malignant B lymphocytes. The factors that initiate the genetic alterations are typically not identifiable, and usually occur in people with no particular risk factors for lymphoma development. Because it is an acquired genetic disorder, MCL is neither communicable nor inheritable.

A defining characteristic of MCL is mutation and overexpression of cyclin D1, a cell cycle gene, that contributes to the abnormal proliferation of the malignant cells. MCL cells may also be resistant to drug-induced apoptosis, making them harder to cure with chemotherapy or radiation. Cells affected by MCL proliferate in a nodular or diffuse pattern with two main cytologic variants, typical or blastic. Typical cases are small to intermediate-sized cells with irregular nuclei. Blastic (aka blastoid) variants have intermediate to large-sized cells with finely dispersed chromatin, and are more aggressive in nature.[9] The tumor cells accumulate in the lymphoid system, including lymph nodes and the spleen, with non-useful cells eventually rendering the system dysfunctional. MCL may also replace normal cells in the bone marrow, which impairs normal blood cell production.

Diagnosis
Lymph node with mantle cell lymphoma (low power view, H&E)
Mantle cell lymphoma. Notice the irregular nuclear contours of the medium-sized lymphoma cells and the presence of a pink histiocyte. By immunohistochemistry the lymphoma cells expressed CD20, CD5 and Cyclin D1 (high power view, H&E)
Micrograph of terminal ileum with mantle cell lymphoma (bottom of image). H&E stain.
Micrograph of terminal ileum with mantle cell lymphoma (bottom of image - brown colour). Cyclin D1 immunostain.

Diagnosis generally requires stained slides of a surgically removed part of a lymph node. Other methods are also commonly used, including cytogenetics and fluorescence in situ hybridization (FISH). Polymerase chain reaction (PCR) and CER3 clonotypic primers are additional methods, but are less often used.

The immunophenotype profile consists of CD5+ (in about 80% of cases),[10] CD10-/+, and it is usually CD5+ and CD10-.[11] CD20+, CD23-/+ (though plus in rare cases). Generally, cyclin D1 is expressed. Cyclin D1-negative mantle cell lymphoma can be diagnosed by detecting the SOX11 marker. The workup for mantle cell lymphoma is similar to the workup for many indolent lymphomas and certain aggressive lymphomas.

Mantle cell lymphoma is a systemic disease with frequent involvement of the bone marrow and gastrointestinal tract (generally showing polyposis in the lining). There is also a not-uncommon leukemic phase, marked by its presence in the blood. For this reason, both the peripheral blood and bone marrow are evaluated for the presence of malignant cells. Chest, abdominal, and pelvic CT scans are routinely performed.

Since mantle cell lymphoma may present a lymphomatous polyposis coli and colon involvement is common, colonoscopy is considered a routine part of the evaluation. Upper endoscopy and neck CT scan may be helpful in selected cases. In some patients with the blastic variant, lumbar puncture is done to evaluate the spinal fluid for involvement.

CT scan

PET scan

Treatments

There are no proven standards of treatment for MCL, and there is no consensus among specialists on how to treat it optimally.[12] Many regimens are available and often get good response rates, but patients almost always get disease progression after chemotherapy. Each relapse is typically more difficult to treat, and relapse is generally faster. Regimens are available that treat relapses, and new approaches are under test. Because of the aforementioned factors, many MCL patients enroll in clinical trials to get the latest treatments.

There are four classes of treatments in general use: chemotherapy, immunotherapy, radioimmunotherapy and biologic agents. The phases of treatment are generally: frontline, following diagnosis, consolidation, after frontline response (to prolong remissions), and relapse. Relapse is usually experienced multiple times.

Chemotherapy

Chemotherapy is widely used as frontline treatment, and often is not repeated in relapse due to side effects. Alternate chemotherapy is sometimes used at first relapse. For frontline treatment, CHOP with rituximab is the most common chemotherapy, and often given as outpatient by IV. A stronger chemotherapy with greater side effects (mostly hematologic) is HyperCVAD, often given in the hospital setting, with rituximab and generally to fitter patients (some of which are over 65). HyperCVAD is becoming popular and showing promising results, especially with rituximab. It can be used on some elderly (over 65) patients, but seems only beneficial when the baseline Beta-2-MG blood test was normal. It is showing better complete remissions (CR) and progression-free survival (PFS) than CHOP regimens. A less intensive option is bendamustine with rituximab.[13]

Second line treatment may include fludarabine, combined with cyclophosphamide and/or mitoxantrone, usually with rituximab. Cladribine and clofarabine are two other medications being investigated in MCL. A relatively new regimen that uses old medications is PEP-C, which includes relatively small, daily doses of prednisone, etoposide, procarbazine, and cyclophosphamide, taken orally, has proven effective for relapsed patients. According to Dr. John Leonard, PEP-C may have anti-angiogenetic properties,[14][15] something that he and his colleagues are testing through an ongoing drug trial.[16]

Another approach involves using very high doses of chemotherapy, sometimes combined with total body irradiation (TBI), in an attempt to destroy all evidence of the disease. The downside to this is the destruction of the patient's entire immune system as well, requiring rescue by transplantation of a new immune system (hematopoietic stem cell transplantation), using either autologous stem cell transplantation, or those from a matched donor (an allogeneic stem cell transplant). A presentation at the December 2007 American Society of Hematology (ASH) conference by Christian Geisler, chairman of the Nordic Lymphoma Group[17] claimed that according to trial results, mantle cell lymphoma is potentially curable with very intensive chemo-immunotherapy followed by a stem cell transplant, when treated upon first presentation of the disease.[18][19]

These results seem to be confirmed by a large trial of the European Mantle Cell Lymphoma Network indicating that induction regimens containing monoclonal antibodies and high dose ARA-C (Cytarabine) followed by ASCT should become the new standard of care of MCL patients up to approximately 65 years.[20][21]

A study released in April 2013 showed that patients with previously untreated indolent lymphoma, bendamustine plus rituximab can be considered as a preferred first-line treatment approach to R-CHOP because of increased progression-free survival and fewer toxic effects.[22]

Immunotherapy

Immune-based therapy is dominated by the use of the rituximab monoclonal antibody, sold under the trade name Rituxan (or as Mabthera in Europe and Australia). Rituximab may have good activity against MCL as a single agent, but it is typically given in combination with chemotherapies, which prolongs response duration. There are newer variations on monoclonal antibodies combined with radioactive molecules known as radioimmunotherapy (RIT). These include Zevalin and Bexxar. Rituximab has also been used in small numbers of patients in combination with thalidomide with some effect.[23] In contrast to these antibody-based 'passive' immunotherapies, the field of 'active' immunotherapy tries to activate a patient's immune system to specifically eliminate their own tumor cells. Examples of active immunotherapy include cancer vaccines, adoptive cell transfer, and immunotransplant, which combines vaccination and autologous stem cell transplant. Though no active immunotherapies are currently a standard of care, numerous clinical trials are ongoing.[24][25][26]

Targeted therapy

Two Bruton tyrosine kinase inhibitors (BTKi), one In November 2013, ibrutinib (trade name Imbruvica, Pharmacyclics LLC) and in October 2017, acalabrutinib (trade name Calquence, AstraZeneca Pharmaceuticals LP) were approved in the United States for treating MCL.[27] Other targeted agents include the proteasome inhibitor bortezomib, mTOR inhibitors such as temsirolimus, and the P110δ inhibitor GS-1101.

In November 2019, zanubrutinib (Brukinsa) was approved in the United States with an indication for the treatment of adults with mantle cell lymphoma who have received at least one prior therapy.[28]

Gene therapy

Brexucabtagene autoleucel (Tecartus) was approved for medical use in the United States in July 2020, with an indication for the treatment of adults with relapsed or refractory mantle cell lymphoma.[29][30][31] It was approved for medical use in the European Union in December 2020.[32]

Each dose of brexucabtagene autoleucel is a customized treatment created using the recipient's own immune system to help fight the lymphoma.[29] The recipient's T cells, a type of white blood cell, are collected and genetically modified to include a new gene that facilitates the targeting and killing of the lymphoma cells.[29] These modified T cells are then infused back into the recipient.[29]

Prognosis

Recent clinical advances in mantle cell lymphoma (MCL) have seen standard‐of‐care treatment algorithms transformed. Frontline rituximab combination therapy, high dose cytarabine‐based induction in younger patients and, more recently, Bruton Tyrosine Kinase (BTK) inhibitors in the relapse setting have all demonstrated survival advantage in clinical trials (Wang et al., 2013; Eskelund et al., 2016; Rule et al., 2016). Over the last 15 years these practices have gradually become embedded in clinical practice and real‐world data has observed corresponding improvements in patient survival (Abrahamsson et al., 2014; Leux et al., 2014).[33]

The overall 5-year survival rate for MCL is generally 50%[34] (advanced stage MCL) to 70%[35] (for limited-stage MCL).

Prognosis for individuals with MCL is problematic and indexes do not work as well due to patients presenting with advanced stage disease. Staging is used but is not very informative, since the malignant B-cells can travel freely though the lymphatic system and therefore most patients are at stage III or IV at diagnosis. Prognosis is not strongly affected by staging in MCL and the concept of metastasis does not really apply.

The Mantle Cell Lymphoma International Prognostic Index (MIPI) was derived from a data set of 455 advanced stage MCL patients treated in series of clinical trials in Germany/Europe. Of the evaluable population, approximately 18% were treated with high-dose therapy and stem cell transplantation in first remission. The MIPI is able to classify patients into three risk groups: low risk (median survival not reached after median 32 months follow-up and 5-year OS rate of 60%), intermediate risk (median survival 51 months) and high risk (median survival 29 months). In addition to the 4 independent prognostic factors included in the model, the cell proliferation index (Ki-67) was also shown to have additional prognostic relevance. When the Ki67 is available, a biologic MIPI can be calculated.[36]

MCL is one of the few NHLs that can cross the boundary into the brain, yet it can be treated in that event.

There are a number of prognostic indicators that have been studied. There is not universal agreement on their importance or usefulness in prognosis.

Ki-67 is an indicator of how fast cells mature and is expressed in a range from about 10% to 90%. The lower the percentage, the lower the speed of maturity, and the more indolent the disease. Katzenberger et al. Blood 2006;107:3407 graphs survival versus time for subsets of patients with varying Ki-67 indices. He shows median survival times of about one year for 61-90% Ki-67 and nearly 4 years for 5-20% Ki-67 index.

MCL cell types can aid in prognosis in a subjective way. Blastic is a larger cell type. Diffuse is spread through the node. Nodular are small groups of collected cells spread through the node. Diffuse and nodular are similar in behavior. Blastic is faster growing and it is harder to get long remissions. Some thought is that given a long time, some non-blastic MCL transforms to blastic. Although survival of most blastic patients is shorter, some data shows that 25% of blastic MCL patients survive to 5 years. That is longer than diffuse type and almost as long as nodular (almost 7 yrs).

Beta-2 microglobulin is another risk factor in MCL used primarily for transplant patients. Values less than three have yielded 95% overall survival to six years for auto SCT where over three yields a median of 44 most overall survival for auto SCT (Khouri 03). This is not yet fully validated.

Testing for high levels of Lactate dehydrogenase (LDH) in NHL patients is useful because LDH is released when body tissues break down for any reason. While it cannot be used as a sole means of diagnosing NHL, it is a surrogate for tracking tumor burden in those diagnosed by other means. The normal range is approximately 100–190.

Epidemiology

6% of non-Hodgkin lymphoma cases are mantle cell lymphoma.[2] As of 2015, the ratio of males to females affected is about 4:1.[2]

See also

References
  1. "Mantle Cell Lymphoma Facts" (PDF). lls.org. Retrieved 10 April 2018.
  2. Skarbnik AP, Goy AH (January 2015). "Mantle cell lymphoma: state of the art". Clin Adv Hematol Oncol. 13 (1): 44–55. PMID 25679973.
  3. "t(11;14)(q13;q32) IGH/CCND1". atlasgeneticsoncology.org. Retrieved 10 April 2018.
  4. Li JY, Gaillard F, Moreau A, et al. (May 1999). "Detection of translocation t(11;14)(q13;q32) in mantle cell lymphoma by fluorescence in situ hybridization". Am. J. Pathol. 154 (5): 1449–52. doi:10.1016/S0002-9440(10)65399-0. PMC 1866594. PMID 10329598.
  5. Barouk-Simonet E, Andrieux J, Copin MC, et al. (2002). "TPA stimulation culture for improved detection of t(11;14)(q13;q32) in mantle cell lymphoma". Ann. Genet. 45 (3): 165–8. doi:10.1016/S0003-3995(02)01122-X. PMID 12381451.
  6. Leukemia&Lymphoma Society (2014). "Mantle Cell Lymphoma Facts" (PDF). www.LLS.org.
  7. Tatsuno K, Fujiyama T, Matsuoka H, Shimauchi T, Ito T, Tokura Y (June 2016). "Clinical categories of exaggerated skin reactions to mosquito bites and their pathophysiology". Journal of Dermatological Science. 82 (3): 145–52. doi:10.1016/j.jdermsci.2016.04.010. PMID 27177994.
  8. Kyriakidis I, Vasileiou E, Karastrati S, Tragiannidis A, Gompakis N, Hatzistilianou M (December 2016). "Primary EBV infection and hypersensitivity to mosquito bites: a case report". Virologica Sinica. 31 (6): 517–520. doi:10.1007/s12250-016-3868-4. PMC 8193400. PMID 27900557. S2CID 7996104.
  9. Goy, Andre. "Mantle Cell Lymphoma: An Update for Clinicians". Medscape. Retrieved 18 October 2007.
  10. Stanford School of Medicine: "Mantle Cell Lymphoma, Differential Diagnosis"
  11. Barekman CL, Aguilera NS, Abbondanzo SL (July 2001). "Low-grade B-cell lymphoma with coexpression of both CD5 and CD10. A report of 3 cases". Arch. Pathol. Lab. Med. 125 (7): 951–3. doi:10.5858/2001-125-0951-LGBCLW. PMID 11419985.
  12. Rajabi B, Sweetenham JW (2015). "Mantle cell lymphoma: observation to transplantation". Ther Adv Hematol. 6 (1): 37–48. doi:10.1177/2040620714561579. PMC 4298490. PMID 25642314.
  13. "Archived copy" (PDF). Archived from the original (PDF) on 23 June 2017. Retrieved 18 March 2015.{{cite web}}: CS1 maint: archived copy as title (link)
  14. http://www.asco.org/ASCO/Abstracts+&+Virtual+Meeting/Abstracts?&vmview=abst_detail_view&confID=23&abstractID=104642%5B%5D
  15. "Dr. John Leonard". Archived from the original on 17 April 2008. Retrieved 24 February 2008.
  16. "Phase II Trial of Anti-Angiogenic Therapy with RT-PEPC in Patients with Relapsed Mantle Cell Lymphoma". 26 June 2018. {{cite journal}}: Cite journal requires |journal= (help)
  17. "Background". Archived from the original on 16 April 2008. Retrieved 15 February 2008.
  18. "Mantle Cell Lymphoma is Curable with Intensive Immunochemotherapy". DocGuide.
  19. "Result Content View". Archived from the original on 17 April 2008.
  20. Ye H, Desai A, Huang S, et al. (July 2018). "Paramount therapy for young and fit patients with mantle cell lymphoma: strategies for front-line therapy". J. Exp. Clin. Cancer Res. 37 (1): 150. doi:10.1186/s13046-018-0800-9. PMC 6044039. PMID 30005678.
  21. Ye H, Desai A, Zeng D, et al. (November 2018). "Frontline Treatment for Older Patients with Mantle Cell Lymphoma". Oncologist. 23 (11): 1337–1348. doi:10.1634/theoncologist.2017-0470. PMC 6291324. PMID 29895632.
  22. Rummel MJ, Niederle N, Maschmeyer G, et al. (April 2013). "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". Lancet. 381 (9873): 1203–10. doi:10.1016/S0140-6736(12)61763-2. PMID 23433739. S2CID 27886488.
  23. Kaufmann H, Raderer M, Wöhrer S, et al. (October 2004). "Antitumor activity of rituximab plus thalidomide in patients with relapsed/refractory mantle cell lymphoma". Blood. 104 (8): 2269–71. doi:10.1182/blood-2004-03-1091. PMID 15166030. S2CID 24548471.
  24. "Chemotherapy Plus Vaccination to Treat Mantle Cell Lymphoma – NCT00101101". ClinicalTrials.gov. Retrieved 28 February 2016.
  25. "Chemotherapy Plus Vaccination to Treat Mantle Cell Lymphoma – NCT00005780". ClinicalTrials.gov. Retrieved 28 February 2016.
  26. "Chemotherapy Plus Vaccination to Treat Mantle Cell Lymphoma – NCT00490529". ClinicalTrials.gov. Retrieved 28 February 2016.
  27. "FDA approves Imbruvica for rare blood cancers". U.S. Food and Drug Administration (FDA) (Press release). 13 November 2013. "FDA approves Calquence, on October 31, 2017, the Food and Drug Administration granted accelerated approval to acalabrutinib, (AstraZeneca Pharmaceuticals Inc. under license of Acerta Pharma BV) with an indication for the treatment of adults with mantle cell lymphoma (MCL) who have received at least one prior round of therapy" (Press release). Archived from the original on 16 February 2017. Retrieved 15 November 2019.
  28. "FDA approves therapy to treat patients with relapsed and refractory mantle cell lymphoma supported by clinical trial results showing high response rate of tumor shrinkage". U.S. Food and Drug Administration (FDA) (Press release). 14 November 2019. Retrieved 15 November 2019. This article incorporates text from this source, which is in the public domain.
  29. "FDA Approves First Cell-Based Gene Therapy For Adult Patients with Relapsed or Refractory MCL". U.S. Food and Drug Administration (FDA). 24 July 2020. Retrieved 24 July 2020. This article incorporates text from this source, which is in the public domain.
  30. "Tecartus". U.S. Food and Drug Administration (FDA). 24 July 2020. STN: BL 125703. Retrieved 24 July 2020.
  31. "U.S. FDA Approves Kite's Tecartus, the First and Only CAR T Treatment for Relapsed or Refractory Mantle Cell Lymphoma" (Press release). Kite Pharma. 24 July 2020. Retrieved 24 July 2020 – via Business Wire.
  32. "Tecartus EPAR". European Medicines Agency (EMA). Retrieved 25 January 2021.
  33. British Journal of Haematology 20 November 2018
  34. Most recent values in:Herrmann A, Hoster E, Zwingers T, et al. (February 2009). "Improvement of overall survival in advanced stage mantle cell lymphoma". J. Clin. Oncol. 27 (4): 511–8. doi:10.1200/JCO.2008.16.8435. PMID 19075279.
  35. Leitch HA, Gascoyne RD, Chhanabhai M, Voss NJ, Klasa R, Connors JM (October 2003). "Limited-stage mantle-cell lymphoma". Ann. Oncol. 14 (10): 1555–61. doi:10.1093/annonc/mdg414. PMID 14504058.
  36. Hoster E, Dreyling M, Klapper W, et al. (January 2008). "A new prognostic index (MIPI) for patients with advanced-stage mantle cell lymphoma". Blood. 111 (2): 558–65. doi:10.1182/blood-2007-06-095331. PMID 17962512. S2CID 19785998.

Further reading
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.