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Acromegaly and IGF-I Levels

A diagnosis of acromegaly can be both a relief and a shock. For some, it takes years just to get a diagnosis. It often involves seeing many different doctors, and feeling misunderstood by family and friends along the way. Because of this, when diagnosed, it can be good to finally know the reason for all the pain, fatigue and physical changes. But quite often, patients learn the cause of acromegaly is a benign brain tumor. So the diagnosis brings new emotions and challenges.

Acromegaly is rare — only about 60 out of every 1 million adults have it. It is a disease that causes the body's tissue to grow too much. This can lead to symptoms such as pain, fatigue, and unwanted growth of the hands, feet and face. It can also increase the risk of serious conditions such as cardiovascular disease, diabetes, hypertension, sleep apnea, arthritis, and osteoporosis.

Although acromegaly is serious, there are things you can do to help manage it. You can get started by understanding what causes it, and how it can be treated. Most of the time, the benign tumor is in the pituitary gland, a pea-sized organ in the brain. The pituitary gland makes hormones. One of these hormones is called growth hormone (GH), which the body needs to grow and work properly. One of GH’s jobs is to tell the body to make another hormone: insulin-like growth factor-I (IGF-I).

In acromegaly, the body makes too much growth hormone and too much
IGF-I. These extra hormones cause the symptoms and health problems of acromegaly.

For more on acromegaly and IGF-I levels, see the FAQs

The animation below shows the actual disease progression over time of a person who has acromegaly:

Next: Why IGF-I Levels Matter >>










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SOMAVERT (pegvisomant for injection) is a prescription medicine for acromegaly. It is for patients whose disease has not been controlled by surgery, radiation, and/or other medical therapies, or patients for whom these options are not appropriate. The goal of treatment with SOMAVERT is to have a normal IGF-I level in the blood.

Important Safety Information for Patients

Do not use SOMAVERT if you are allergic to SOMAVERT or anything that is in it.

Be sure to tell your doctor if you use narcotic painkillers (opioid medicines) because the dose of SOMAVERT may need to be changed.

Tumors that make growth hormone may grow in people with acromegaly. Studies have shown that the size of these tumors generally does not change for people who use SOMAVERT. Even so, these tumors need to be watched carefully by your doctor. Your doctor may ask you to have a magnetic resonance imaging (MRI) test to monitor the size of your tumor.

Blood sugar levels may go down when taking SOMAVERT. Be sure to tell your doctor if you use insulin or other medicines (oral hypoglycemic medicines) for diabetes. The dose of these medicines may need to be reduced when you use SOMAVERT.

Some people who have used SOMAVERT have developed liver problems. These problems generally disappeared when those people stopped taking SOMAVERT.

Stop the drug right away and call your doctor if you get any of these symptoms:

  • Your skin or the white part of your eyes turns yellow (jaundice)
  • Your urine turns dark
  • Your bowel movements (stools) turn light in color
  • You do not feel like eating for several days
  • You feel sick to your stomach (nausea)
  • You have unexplained tiredness
  • You have pain in the stomach area (abdomen)

Your doctor may do blood tests before and during your treatment with SOMAVERT to check that the IGF-I levels in your blood are normal and/or that your liver is working correctly. Your dose of SOMAVERT may be changed based on the results of these tests.

The most common side effects with SOMAVERT are pain, infection, reaction at the injection site, flu-like symptoms, nausea, and diarrhea. These are not all of the possible side effects of SOMAVERT. For more information, speak to your doctor.

Inject SOMAVERT in a different place on your body each day. This can help prevent skin problems such as lumpiness or soreness.

SOMAVERT has not been studied in pregnant women. It is not known if SOMAVERT passes into the mother’s milk or if it can harm the baby.

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.

The health information contained herein is provided for educational purposes only and is not intended to replace discussions with a healthcare provider. All decisions regarding patient care must be made with a healthcare provider, considering the unique characteristics of the patient.

This product information is intended only for residents of the United States and Puerto Rico. The products discussed herein may have different labeling in different countries.



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