- Risk Factors
- Signs & Symptoms
Mantle cell lymphoma (MCL) facts
- Mantle cell lymphoma (MCL) is a relatively rare cancer of the lymphoid cells that arise from the outer rim or mantle lymphoid follicle.
- The cause of MCL is unknown, although around 85% of patients have a genetic abnormality known as translocation, resulting in the overproduction of cyclin D1, a protein that drives cell growth.
- The risk factors for MCL are not clear and may be related to environmental or genetic factors.
- Signs and symptoms of MCL may include:
- night sweats,
- enlarged lymph nodes,
- splenomegaly (enlarged spleen),
- hepatomegaly (enlarged liver), and
- weight loss.
- Doctors who treat MCL include one's primary care physician and specialists such as oncologists, hematologists, radiologists, and surgeons.
- There are four stages of MCL, but healthcare professionals typically diagnose most patients (70%) after they are in stage IV, the stage with the worst prognosis with MCL spread to other organs.
- Physicians stage and diagnose MCL by examination of needle aspiration of lymph nodes and/or bone marrow biopsies along with imaging studies.
- Healthcare professionals treat MCL with chemotherapy, radiotherapy, and combination methods, which may also include surgical debulking; currently, there is no cure for MCL.
- Complications of MCL include short lifespan and death; other complications may be chemotherapy treatment protocolstherapy.
- For most individuals with MCL, the prognosis is only fair to poor.
- It is not possible to prevent MCL.
- There are ongoing clinical trials for MCL; some reports in clinical trials suggest there may be better outcomes for this disease in the future.
What is mantle cell lymphoma (MCL)?
Mantle cell lymphoma (MCL) is a relatively rare type of cancer of the lymphoid cells; it is termed mantle cell lymphoma because the cancer cells (lymphoma cells) arise from the outer rim or mantle of lymphoid cells that surround a lymphoid follicle. MCL is an aggressive B-cell type of non-Hodgkin's lymphoma, and the rare disease accounts for about 2%-10% of non-Hodgkin's lymphomas.
What causes mantle cell lymphoma?
About 85% of patients with MCL have a characteristic genetic lesion known as a reciprocal translocation, in which short segments of one chromosome are moved to another chromosome.
- The characteristic change in MCL involves chromosomes 11 and 14 and is called t(11;14).
- The exchange of chromosomal material occurs at the location of the cyclin D1 gene (BCL-1, now referred to as CCND1) on chromosome 11; the change causes an overproduction of cyclin D1, a protein that stimulates tumor cell division and growth.
- This genetic change is considered a driver in the behavior of MCL, which likely works together with other genetic defects to cause MCL.
- In a small number of patients, t(11;14) is not present. In most of these patients without the characteristic translocation, other genetic changes cause excess production of cyclin D1.
What are risk factors for mantle cell lymphoma?
There is a lack of agreement in the medical literature on specific risk factors for MCL, although family history and certain genetic changes have been identified that increase the risk.
- MCL affects males about four times as commonly as females.
- Blacks and Asians are less likely than whites to develop MCL.
- Age is a risk factor; the median age of MCL onset is 60 years of age with an age range of 35-85 years.
What are signs and symptoms of mantle cell lymphoma?
Signs and symptoms of MCL may include the following:
- Night sweats
- Generalized enlargement of lymph nodes (lymphadenopathy)
- Abdominal distention from an enlarged spleen (splenomegaly)
- An abdominal decision from the enlarged liver (hepatomegaly)
- Weight loss (in about 40% of patients)
- The spread of cancer into other organs (extranodal spread) may produce organ-specific symptoms.
What types of healthcare professionals diagnose and treat mantle cell lymphoma?
Specialists in cancer treatment (oncologists, hematologists, surgeons, and radiologists), in conjunction with one's primary care physician, treat mantle cell lymphoma.
What tests do healthcare professionals use to diagnose mantle cell lymphoma?
Healthcare professionals diagnose MCL with needle aspirates of lymph nodes and determine staging by needle aspirates or biopsies of bone marrow. CT, blood tests, and immunotyping (examining the specific molecules expressed on the surface of the lymphoma cells) of cancer cells may be done further to delineate the spread and other characteristics of your MCL. Testing for overexpression of the cyclin D1 protein and the presence of the t(11,14) genetic abnormality are also performed.
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What are the stages of mantle cell lymphoma?
There are four stages of mantle cell lymphoma.
- Stage I and stage II describe localized MCL.
- Physicians see many patients in stage III (intermediate-grade or phase) in which the MCL cancer cells have begun to proliferate outside of the nodes, and
- 70% percent of patients are first diagnosed with stage IV (advanced-stage) in which the cancer cells have gone into masses, often replacing lymph nodes, and have spread into other body organs.
What is the treatment for mantle cell lymphoma?
Treatment of mantle cell lymphoma is complex because patients usually receive their diagnosis in stage IV, where the MCL has advanced throughout the body. There are many different therapeutic regimens (single-agent and combined drugs) to treat MCL; most include multiple chemotherapy drug administrations (for example, high-dose Ara-C and others).
- Rituximab (Rituxan), in combination with other chemotherapy drugs, typically treats patients who have MCL.
- Rituxan is a monoclonal antibody used to treat different cancers of the lymphoid cells.
- Newer chemotherapy drugs used for MCL include bortezomib (Velcade).
- Other treatments include autologous stem cell transplantation and R-hyper-CVAD (rituximab hyper CVAD), a more intensive form of chemotherapy (drug-intensified chemo-immunotherapy), and R-DHAP chemotherapy for refractory mantle-cell lymphoma.
- Some patients may benefit from surgical debulking (tissue removal to reduce symptoms).
- There is no cure for MCL; healthcare providers administer treatments to reduce symptoms and/or to increase limited survival time.
Patients should speak with their physician team members to decide what treatment options are best, as new specialized drug treatments and protocols are continually appearing in the medical literature. For example, ibrutinib (Imbruvica) is a new formulation (one pill per day) that patients who have obtained at least one prior therapy can use.
Are there clinical trials for mantle cell lymphoma?
Yes, there are clinical trials for mantle cell lymphoma. For example, an open-label phase 2 trial of several drugs, alone and in combination in treatment for refractory mantle cell lymphoma found evidence that a triple combination of drugs warrants evaluation. For further information and a list of those trials and their locations, please visit https://www.centerwatch.com/clinical-trials/listings/condition/628/mantle-cell-lymphoma.
What is the prognosis and survival rate of mantle cell lymphoma?
MCL has a poor prognosis, even with appropriate therapy.
- Usually, physicians note treatment failures in less than 18 months, and the median survival time of individuals with MCL is about two to five years.
- The 10-year survival rate is only about 5%-10%.
- However, some researchers claim to have doubled the median survival rate in younger patients (less than 65 years of age) treated with an intensive regimen of chemotherapy in clinical trials.
What are complications of mantle cell lymphoma?
Besides the signs and symptoms caused by mantle cell lymphoma, the major complications of MCL are decreased lifespan and death.
Other complications come from treatments, mainly chemotherapy treatment, and include the following:
- Neutropenia (a reduced number of infection-fighting cells)
- Thrombocytopenia (reduced platelet count)
- Damage to the heart from certain chemotherapy drugs
Is it possible to prevent mantle cell lymphoma?
Currently, there is no known way to prevent the genetic changes that drive MCL.
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Kluin-Nelemans, H., et al. "Treatment of Older Patients with Mantle-Cell Lymphoma." NEJM Aug. 9, 2012. <https://www.nejm.org/doi/full/10.1056/NEJMoa1200920>.
Lowry, F. "Cure for mantle cell lymphoma within reach says expert." Medscape. Jan. 19, 2016. <https://www.medscape.com/viewarticle/857424>.
Wang, Yu, and Shuangge Ma. "Risk Factors for Etiology and Prognosis of Mantle Cell Lymphoma." Expert Rev Hematol 7.2 April 2014: 233-243. <https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4465399/>.
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