DLBCL Stages: How Is Advanced DLBCL Treated? | MyLymphomaTeam

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DLBCL Stages: How Is Advanced DLBCL Treated?

Medically reviewed by Patrina Conley-Brown, D.O. — Written by Chelsea Alvarado, M.D.
Posted on July 21, 2023
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  • Diffuse large B-cell lymphoma (DLBCL) is staged based on which lymph nodes and organs are involved; later-stage disease is considered more advanced.
  • Advanced DLBCL is usually treated with a combination of chemotherapy and immunotherapy drugs.
  • Radiation therapy and other drug options may be recommended in specific cases of advanced DLBCL.

As with many cancers, diagnosing diffuse large B-cell lymphoma involves staging to help determine its extent or spread. DLBCL is a fast-growing blood cancer and the most common subtype of non-Hodgkin lymphoma. DLBCL is staged based on where the cancer is found in the body. Knowing the stage helps doctors recommend the most effective treatment options. Although DLBCL grows quickly, it can respond well to treatment.

Staging DLBCL

DLBCL affects your lymphatic system — the group of organs that help your immune system fight infections. DLBCL staging is based on where cancer cells are found in the lymphatic system. The cells may show up in the lymph nodes (small, infection-fighting structures located throughout the body). Lymphoma can also occur in lymphoid organs such as the thymus, spleen, and tonsils.

DLBCL is divided into four stages, sometimes written with Roman numerals (e.g., stage I, stage IV, etc.):

  • Stage 1 — Lymphoma is in one region of lymph nodes or one lymphoid organ. One node region refers to a node or a group of nodes next to each other.
  • Stage 1E — Lymphoma started in one area of a single organ outside the lymphatic system and is only in that extranodal (outside the lymph nodes) site — this is known as extranodal lymphoma. The organs in which DLBCL commonly starts outside the lymphatic system are the bones or bone marrow, brain or spinal cord, and gastrointestinal tract.
  • Stage 2 — Lymphoma is present in two or more lymph node regions in only the upper half (above the diaphragm) or lower half (below the diaphragm) of the body.
  • Stage 2E — Lymphoma started in one organ outside the lymphatic system and is also in at least one group of lymph nodes in only the upper or lower half of the body.
  • Stage 3 — Lymphoma is present in lymph nodes in both the upper and lower halves of the body.
  • Stage 4 — Lymphoma started in a group of lymph nodes and has spread to one or more extranodal sites.

Although some aspects of treatment are similar in DLBCL regardless of stage, the use of certain drugs or radiation varies by stage and prognosis (outlook). Doctors use a tool called the International Prognostic Index (IPI) to better understand the outlook for DLBCL.

The IPI rates DLBCL severity based on your age and stage of lymphoma, as well as involvement of organs outside the lymphatic system, your performance status (ability to do daily activities), and the level of lactate dehydrogenase (LDH) in your body. LDH is a protein that becomes elevated as lymphoma progresses.

A higher IPI score means that the disease has a worse outlook. Factors that make DLBCL higher risk include age above 60 years, stage 3 or 4 disease, lymphoma in more than one organ outside the lymph nodes, low performance status, and high LDH.

Read more about prognosis and survival rates with DLBCL.

Treating Advanced DLBCL

DLBCL is considered advanced when it’s either stage 3 or 4. Because DLBCL grows rapidly, 60 percent to 70 percent of people have advanced DLBCL at the time they’re diagnosed. Treatment options include chemotherapy combined with immunotherapy (drugs that use the immune system to treat disease) and radiation therapy.

First-Line Treatment Options

For the past 20 years, first-line (used as the first option) treatment of advanced DLBCL has been a combination of drugs called R-CHOP. The R-CHOP regimen consists of:

Six cycles of R-CHOP treatment are generally given to people with advanced-stage DLBCL. Each 21-day R-CHOP cycle includes five days of chemotherapy followed by a rest period. Per a 2021 study in the American Journal of Hematology, R-CHOP has the potential to cure disease in 60 percent of people with acquired DLBCL — cancer that doesn’t run in families.

Rituximab is a monoclonal antibody, a type of immunotherapy that has a specific treatment target and less toxicity (fewer side effects). Monoclonal antibodies act like the body’s naturally occurring antibodies — proteins in the immune system that mark other proteins for destruction by immune cells.

Cyclophosphamide, vincristine, and doxorubicin are standard chemotherapy drugs, which kill fast-growing cells. While the main target is cancer cells, fast-growing healthy cells are also affected. Death of healthy cells results in the side effects seen with standard chemotherapy.

Prednisone is a steroid, a type of drug that reduces inflammation — and therefore some of the side effects — by suppressing the immune system.

In April, the U.S. Food and Drug Administration (FDA) approved another first-line treatment option for previously untreated advanced DLBCL. This drug combination, called Pola-R-CHP, consists of polatuzumab vedotin-piiq (Polivy), which is a monoclonal antibody, plus rituximab, cyclophosphamide, doxorubicin, and prednisone. The FDA based its approval on a 2022 clinical trial in which 879 people were treated with either Pola-R-CHP or R-CHOP.

In the study, the risks of death, relapse (return of a disease after initial improvement with treatment), and worsening of disease were lower in people receiving Pola-R-CHP. As with R-CHOP, six cycles of Pola-R-CHP are given to treat advanced DLBCL.

Read more about the risk of relapse in DLBCL.

Radiation Therapy

Although radiation therapy is commonly part of early-stage DLBCL treatment, it’s generally used only in specific cases of advanced disease. Based on available clinical trials, radiation therapy is recommended for people with DLBCL who have bulky disease.

Bulky disease refers to lymphoma in which the largest tumor is more than 10 centimeters wide. In DLBCL, radiation is sometimes used even when the largest tumor is more than 7.5 centimeters wide. If you have advanced DLBCL without bulky disease, you may be offered radiation if a small amount of disease has spread to your bones.

Other Treatment Options

If you’re at increased risk of a DLBCL relapse, that may guide your doctor’s recommendations for treatment options. A higher IPI score means a higher risk of relapse.

Some people with DLBCL are more likely to have their disease relapse in the central nervous system (CNS), which consists of the brain and spinal cord. They may be offered a chemotherapy injection directly into the fluid around the spinal cord. To prevent CNS relapse, methotrexate, a chemotherapy drug that blocks the immune system, is sometimes given in addition to chemotherapy.

For people who are younger and have high-risk DLBCL based on IPI score, a bone marrow transplant is a second-line treatment option. That said, bone marrow transplants are not known to work unless DLBCL improves with chemotherapy.

If your DLBCL doesn’t have a complete response (go away completely) after first-line chemotherapy, your oncologist will try other chemotherapy drug combinations, sometimes including rituximab.

An additional treatment option if DLBCL doesn’t improve with first-line chemotherapy is chimeric antigen receptor (CAR) T-cell therapy, which uses your own immune-fighting T cells to treat your cancer.

Ongoing Research

If you or someone you love has been diagnosed with advanced DLBCL, it may be worthwhile to get involved in a clinical trial. This is especially true if the cancer hasn’t responded to first-line or second-line treatment.

Based on discoveries about genetic changes in DLBCL, researchers are looking at new targeted therapies (treatments aimed directly at cancer cells) and immunotherapies (treatments that boost the body’s immune system). Doctors are also researching new ways to combine chemotherapy drugs for the best survival results. If you’re interested in learning more about clinical studies in which you may be eligible to participate, ask your oncologist for more information.

Talk With Others Who Understand

MyLymphomaTeam is the social network for people with lymphoma and their loved ones. There, more than 14,000 members understand what it’s like to face lymphoma gather to provide support and answers.

Have you been diagnosed with advanced DLBCL? Which treatments have you received? Share your experience or post a comment on your Activities page to start a conversation.

    Posted on July 21, 2023
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    Patrina Conley-Brown, D.O. holds a Bachelor of Science from Vanderbilt University, a Master of Science from the University of South Florida, and a Doctor of Osteopathic Medicine from Nova Southeastern University. Learn more about her here.
    Chelsea Alvarado, M.D. earned her Bachelor of Science in biochemistry from Temple University in Philadelphia, Pennsylvania, and her Doctor of Medicine from the University of Maryland School of Medicine in Baltimore, Maryland. Learn more about her here.

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