Hycamtin (topotecan) is an anticancer treatment option used for small cell lung cancer (SCLC) that comes back (relapsed) after having been treated with first-choice chemotherapy. It’s a convenient pill taken by mouth, usually for a few days each chemotherapy cycle. This medication can raise your risk for infections and bleeds.
Hycamtin (topotecan) is a type of anticancer medication called a topoisomerase I inhibitor. It prevents cancer cells from growing by damaging the cancer cells’ genetic material, which leads to cell death.
The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.
Contact your healthcare provider immediately if you experience any of the following.
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor or nurse immediately if any of the following side effects occur:
More common
Black, tarry stools
bleeding gums
blood in the urine or stools
body aches or pain
chills
congestion
difficult or labored breathing
dryness or soreness of the throat
hoarseness
lower back or side pain
painful or difficult urination
pale skin
pinpoint red spots on the skin
tender, swollen glands in the neck
tightness in the chest
trouble in swallowing
troubled breathing with exertion
ulcers, sores, or white spots in the mouth
unusual bleeding or bruising
unusual tiredness or weakness
voice changes
Less common
Confusion
dizziness
fainting
fast heartbeat
lightheadedness
pain or cramping in the abdomen
rapid, shallow breathing
stomach pain
vomiting
Incidence not known
Cracked lips
dizziness
large, hive-like swelling on face, eyelids, lips, tongue, throat, hands, legs, feet, or genitals
pale skin, pain, or redness at the site of injection
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
severe bleeding
severe itching, skin rash
severe stomach pain
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
Hycamtin (topotecan) is only FDA-approved to treat small cell lung cancer. But topotecan injection is approved to treat certain types of ovarian cancer and cervical cancer, in addition to small cell lung cancer. For small cell lung cancer, the dosing is different between oral and IV forms of the medication. While you’ll typically receive topotecan injection in a clinic or infusion center, Hycamtin (topotecan) can be taken at home. But be aware that Hycamtin (topotecan) needs to be refrigerated, so you'll need to properly and safely store this medication.
There are many ways you can lower your chances of developing an infection while you’re receiving Hycamtin (topotecan). For example, wash your hands often with soap, especially before eating, after using the bathroom, or after touching things like door knobs. If you can, avoid crowded places and people who are sick. But if you need to be around crowds, it’s best to wear a mask. To avoid food-borne illnesses, make sure to wash raw fruits and vegetables before eating, and cook foods thoroughly. It’s important to follow these tips during Hycamtin (topotecan) treatment because the medication weakens your immune system, and makes you more likely to develop a serious infection. Let your provider know right away if you have any signs of an infection, such as fever, tiredness, chills.
Hycamtin (topotecan) can cause hair loss and hair thinning because it damages your hair follicles. But not everyone will experience this side effect. According to clinical studies, 10-20% of people who took Hycamtin (topotecan) reported hair loss, but most of the time it was mild. For people who did experience hair loss, it typically starts 3 to 4 weeks after the first dose. This side effect is usually temporary and hair typically grows back after you’re done with the treatment. If you’re concerned about hair loss from Hycamtin (topotecan), talk with your provider about how to minimize this side effect. They might recommend that you try a cooling cap, or give you tips on proper hair care during chemotherapy.
If you’ve kidney problems, you might be at higher risk for side effects from Hycamtin (topotecan). Typically, the kidneys help get rid of Hycamtin (topotecan) from the body through urine. But if you have kidney problems, your body will have a hard time getting rid of the medication. This can lead to higher levels of the medication in your body and higher risk of side effects, such as risk of infection, nausea, vomiting, and diarrhea. Let your provider know if you have problems with your kidneys, as you’ll need to be monitored more closely and might need a lower dose of Hycamtin (topotecan).
Avoid breastfeeding while receiving Hycamtin (topotecan) and for one week after the last dose. We don’t know if it can pass into human breast milk. But if it does, the medication has a risk of causing serious harm to nursing babies. Talk to your provider if you have any questions about other ways to feed your baby while receiving Hycamtin (topotecan).
Store Hycamtin (topotecan) in the refrigerator at 36° to 46°F (2° to 8°C). Don't freeze it. Keep it stored in the bottle it came in. If you're planning to travel, make sure to store your medication in a cooler bag with ice, so that it's at the right temperature. Talk with your provider or pharmacist if you have questions about storage or traveling with Hycamtin (topotecan).
Hycamtin (topotecan) can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options.
Hycamtin (topotecan) can cause your red blood cells (RBCs), white blood cells (WBCs), and platelets counts to drop. When the number of these cells are lower than normal, you’re at risk of developing anemia, infections, and bleeding or bruising. In some cases, your blood cell counts might be low for a while. This is because your chemotherapy medications can weaken your bone marrow and affect its ability to make new blood cells like normal.
Your provider will closely check your blood cell counts through routine lab work when you’re receiving Hycamtin (topotecan). Let your provider know as soon as possible if you experience extreme tiredness, rapid breathing, fevers, chills, or bleeding and bruising that doesn’t stop or go away.
Hycamtin (topotecan) can cause diarrhea. This usually happens within 5 to 9 days of treatment. In rare cases, the diarrhea can be severe enough that you might need to be hospitalized. Talk to your healthcare team if you develop diarrhea and be sure to stay well-hydrated. They can recommend antidiarrheal medications, such as loperamide (Imodium A-D) to help manage it. If your diarrhea doesn’t improve or gets worse, let your provider know right away. Your provider might need to lower your dose of Hycamtin (topotecan) or ask you to stop taking it temporarily.
Let your provider know right away if you experience coughing or trouble breathing while receiving Hycamtin (topotecan). This medication can cause interstitial lung disease (ILD), a condition where there’s scarring on the lungs. If you develop these symptoms, your provider will need to examine you to figure out they’re caused by Hycamtin (topotecan) or an infection, and treat you accordingly. If you have ILD, your provider will likely stop this medication.
Based on animal studies, Hycamtin (topotecan) can harm an unborn baby. Because of this risk, regardless of your sex, you should use birth control during treatment with Hycamtin (topotecan) to prevent pregnancy. After the end of treatment, continue to use birth control for at least another 3 months (for males) or 6 months (for females). Let your provider know right away if you or your partner becomes pregnant during this time.
Your provider will calculate your dose of Hycamtin (topotecan) based on your body surface area (BSA, in units of m2), which takes into account your body weight and height.
The typical dose is 2.3 mg/m2 by mouth daily for 5 days (Days 1 through 5) of each 21-day treatment cycle.
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are receiving this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.
Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.