KEYTRUDA® (pembrolizumab): Immunotherapy for Advanced MSI-H/dMMR Endometrial Cancer
Advanced MSI-H/dMMR endometrial cancer​​

IS KEYTRUDA RIGHT FOR YOU?

KEYTRUDA may be part of your treatment plan

Find the information you need, questions to ask your care team, and tips for accepting support, so you can feel ready to make decisions with your doctor.

KEYTRUDA is approved to treat certain types of advanced endometrial cancer after you have received anti-cancer treatment, and it is no longer working. To help determine your treatment options, your doctor may test your cancer to see if it is microsatellite instability-high (MSI-H) or mismatch repair deficient (dMMR), which some types of cancer can be.

What is MSI‑H/dMMR?

In normal cells, a system called DNA mismatch repair (MMR) corrects errors that occur during DNA replication. Defects in MMR can lead to microsatellite instability-high (MSI-H), which can be found in many types of cancer. MSI-H or mismatch repair deficient (dMMR) tumors have accumulation of errors in genetic sequences that are normally repeated (called microsatellites).

Tests to Evaluate Tumors for MSI-H or dMMR or Different Biomarkers

You and your doctor can find out if KEYTRUDA is a match for you

Everyone’s cancer is different. To help develop a treatment plan that’s right for you, your doctor may order laboratory tests. These tests can evaluate your tumors for different biomarkers, such as MSI or MMR. Some biomarkers are used to determine which people may benefit from select treatments, such as KEYTRUDA.

Questions to ask your care team about treatment with KEYTRUDA:

  • Have I had all the tests needed to determine the best treatment path?
  • Is KEYTRUDA right for me?
  • What side effects might I expect and how can I manage them?
  • How can I learn more about financial help with treatment?
Accepting Help During Cancer Treatment

Accepting support from loved ones and your care team

Although you may be facing new challenges at this stage in your treatment, you can rely on the continued support of your care team and loved ones.

Many people often find asking for and accepting help makes it easier to deal with daily responsibilities. Friends and family can help with meals, organize rides, or run errands while you’re at a doctor’s appointment. Help from loved ones can give you more time to focus on yourself and manage your treatment.

As you navigate a treatment path, you will have your care team by your side, dedicated to helping you—a care team that is made up of many specialists—oncologists, radiologists, oncology nurses, patient and nurse navigators. They are there to answer your questions and share their guidance.

Questions About Insurance or Financial Assistance for KEYTRUDA® (pembrolizumab)? Contact Us to Speak to a Representative

Questions about insurance coverage or financial assistance? We can help.

Call 855-257-3932 to speak with a Merck Access Program representative.

Additional Educational Resources About KEYTRUDA® (pembrolizumab) for Patients

Patient support anytime, anywhere you need it

This program is designed to offer educational resources to help with the practical and emotional challenges of cancer. Patients prescribed KEYTRUDA for an approved indication can receive phone support, e-mails, and online activities.

FDA-Approved Indications

KEYTRUDA is a prescription medicine used to treat a kind of uterine cancer called endometrial carcinoma. KEYTRUDA may be used alone:

  • if your cancer is shown by a laboratory test to be microsatellite instability-high (MSI-H) or mismatch repair deficient (dMMR), and
  • you have received anti-cancer treatment, and it is no longer working, and
  • your cancer cannot be cured by surgery or radiation (advanced endometrial carcinoma).
Important Safety Information

KEYTRUDA is a medicine that may treat certain cancers by working with your immune system. KEYTRUDA can cause your immune system to attack normal organs and tissues in any area of your body and can affect the way they work. These problems can sometimes become severe or life-threatening and can lead to death. You can have more than one of these problems at the same time. These problems may happen any time during treatment or even after your treatment has ended.

Call or see your health care provider right away if you develop any signs or symptoms of the following problems or if they get worse. These are not all of the signs and symptoms of immune system problems that can happen with KEYTRUDA:

Lung problems: cough, shortness of breath, or chest pain.

Intestinal problems: diarrhea (loose stools) or more frequent bowel movements than usual; stools that are black, tarry, sticky, or have blood or mucus; or severe stomach-area (abdomen) pain or tenderness.

Liver problems: yellowing of your skin or the whites of your eyes; severe nausea or vomiting; pain on the right side of your stomach area (abdomen); dark urine (tea colored); or bleeding or bruising more easily than normal.

Hormone gland problems: headaches that will not go away or unusual headaches; eye sensitivity to light; eye problems; rapid heartbeat; increased sweating; extreme tiredness; weight gain or weight loss; feeling more hungry or thirsty than usual; urinating more often than usual; hair loss; feeling cold; constipation; your voice gets deeper; dizziness or fainting; changes in mood or behavior, such as decreased sex drive, irritability, or forgetfulness.

Kidney problems: decrease in the amount of your urine; blood in your urine; swelling of your ankles; loss of appetite.

Skin problems: rash; itching; skin blistering or peeling; painful sores or ulcers in your mouth or in your nose, throat, or genital area; fever or flu-like symptoms; swollen lymph nodes.

Problems can also happen in other organs and tissues. Signs and symptoms of these problems may include: chest pain; irregular heartbeat; shortness of breath; swelling of ankles; confusion; sleepiness; memory problems; changes in mood or behavior; stiff neck; balance problems; tingling or numbness of the arms or legs; double vision; blurry vision; sensitivity to light; eye pain; changes in eyesight; persistent or severe muscle pain or weakness; muscle cramps; low red blood cells; bruising.

Infusion reactions that can sometimes be severe or life-threatening. Signs and symptoms of infusion reactions may include chills or shaking, itching or rash, flushing, shortness of breath or wheezing, dizziness, feeling like passing out, fever, and back pain.

Rejection of a transplanted organ. Your health care provider should tell you what signs and symptoms you should report and they will monitor you, depending on the type of organ transplant that you have had.

Complications, including graft-versus-host disease (GVHD), in people who have received a bone marrow (stem cell) transplant that uses donor stem cells (allogeneic). These complications can be serious and can lead to death. These complications may happen if you underwent transplantation either before or after being treated with KEYTRUDA. Your health care provider will monitor you for these complications.

Getting medical treatment right away may help keep these problems from becoming more serious. Your health care provider will check you for these problems during treatment with KEYTRUDA. They may treat you with corticosteroid or hormone replacement medicines. They may also need to delay or completely stop treatment with KEYTRUDA if you have severe side effects.

Before you receive KEYTRUDA, tell your health care provider if you have immune system problems such as Crohn’s disease, ulcerative colitis, or lupus; have had an organ transplant or have had or plan to have a bone marrow (stem cell) transplant that uses donor stem cells (allogeneic); have had radiation treatment in your chest area; have a condition that affects your nervous system, such as myasthenia gravis or Guillain-Barré syndrome.

If you are pregnant or plan to become pregnant, tell your health care provider. KEYTRUDA can harm your unborn baby. If you are able to become pregnant, you will be given a pregnancy test before you start treatment. Use effective birth control during treatment and for at least 4 months after your final dose of KEYTRUDA. Tell them right away if you think you may be pregnant or you become pregnant during treatment with KEYTRUDA.

Tell your health care provider if you are breastfeeding or plan to breastfeed. It is not known if KEYTRUDA passes into your breast milk. Do not breastfeed during treatment with KEYTRUDA and for 4 months after your final dose of KEYTRUDA.

Tell your health care provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

Common side effects of KEYTRUDA when used alone include feeling tired; pain, including pain in muscles; rash; diarrhea; fever; cough; decreased appetite; itching; shortness of breath; constipation; bones or joints and stomach-area (abdominal) pain; nausea; and low levels of thyroid hormone.

In children, when KEYTRUDA is used alone, fever, vomiting, upper respiratory tract infection, headache, and low levels of white blood cells and red blood cells (anemia) are more common than in adults.

Common side effects of KEYTRUDA when given with certain chemotherapy medicines include feeling tired or weak; nausea; constipation; diarrhea; decreased appetite; rash; vomiting; cough; trouble breathing; fever; hair loss; inflammation of the nerves that may cause pain, weakness, and paralysis in the arms and legs; swelling of the lining of the mouth, nose, eyes, throat, intestines, or vagina; mouth sores; headache; weight loss; stomach-area (abdominal) pain; joint and muscle pain; and trouble sleeping.

Common side effects of KEYTRUDA when given with chemotherapy and bevacizumab include tingling or numbness of the arms or legs; hair loss; low red blood cell count; feeling tired or weak; nausea; low white blood cell count; diarrhea; high blood pressure; decreased platelet count; constipation; joint aches; vomiting; urinary tract infection; rash; low levels of thyroid hormone; and decreased appetite.

Common side effects of KEYTRUDA when given with axitinib include diarrhea; feeling tired or weak; high blood pressure; liver problems; low levels of thyroid hormone; decreased appetite; blisters or rash on the palms of your hands and soles of your feet; nausea; mouth sores or swelling of the lining of the mouth, nose, eyes, throat, intestines, or vagina; hoarseness; rash; cough; and constipation.

These are not all the possible side effects of KEYTRUDA. Talk to your health care provider for medical advice about side effects.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch or call 1-800-FDA-1088.

Please read the accompanying Medication Guide for KEYTRUDA and discuss it with your doctor. The physician Prescribing Information also is available.