What is DATROWAY®?
DATROWAY is a prescription medicine used to treat adults who have:
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hormone receptor (HR)-positive and human epidermal growth factor receptor 2 (HER2)-negative breast cancer:
- that cannot be removed by surgery (unresectable) or has spread to other parts of the body (metastatic), and
- who have received prior endocrine-based therapy and chemotherapy treatment for unresectable or metastatic disease.
It is not known if DATROWAY is safe and effective in children.
What is the most important information I should know about DATROWAY?
DATROWAY can cause serious side effects, including:
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Lung problems that may be severe, life-threatening, or that may lead to death. If you
develop lung problems, your healthcare provider may treat you with corticosteroid medicines. Tell your
healthcare provider right away if you get any of the following signs and symptoms:
- cough
- trouble breathing or shortness of breath
- fever
- other new or worsening breathing symptoms such as chest tightness or wheezing
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Eye problems. Eye problems are common with DATROWAY and can also be severe. Tell your healthcare provider right away if you develop any new or worsening eye problems during treatment with DATROWAY, including dry eyes, eye pain, eye redness, eye swelling, eye irritation, increased tears, feeling like something is in your eyes, discharge from your eyes, eye crusting, sensitivity to light, blurred vision or vision changes.
- You should use preservative-free lubricating eye drops at least 4 times a day and as needed.
- Do not wear contact lenses during treatment with DATROWAY unless your eye specialist tells you to.
- Your healthcare provider will send you to an eye specialist to check your eyes when you start your treatment with DATROWAY, every year during treatment, at the end of treatment, and as needed for any new or worsening signs and symptoms of eye problems.
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Mouth ulcers and sores. Mouth ulcers and sores are common with DATROWAY and can also be severe. Tell your healthcare provider right away if you develop mouth pain, swelling, redness, ulcers, or sores during treatment with DATROWAY.
- Your healthcare provider will prescribe a steroid-containing mouthwash to use 4 times a day and as needed during treatment with DATROWAY.
- You should hold ice chips or ice water in your mouth during your DATROWAY infusions.
Your healthcare provider will check you for these side effects during your treatment with DATROWAY. Your healthcare provider may reduce your dose, delay treatment, or completely stop
treatment with DATROWAY if you have severe side effects.
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Harm to your unborn baby. Tell your healthcare provider right away if you become
pregnant or think you might be pregnant during treatment with DATROWAY.
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If you are able to become pregnant, your healthcare provider should do a pregnancy test before you
start treatment with DATROWAY.
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Females who are able to become pregnant should use effective birth control
(contraception) during treatment with DATROWAY and for 7 months after the last dose.
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Males who have female partners that are able to become pregnant should use
effective birth control (contraception) during treatment with DATROWAY and for 4 months after the
last dose.
See “What are the possible side effects of DATROWAY?” for more information about side effects.
Before receiving DATROWAY, tell your healthcare provider about all of your medical conditions, including if you:
- Have lung or breathing problems.
- Have eye problems.
- Use contact lenses.
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Are breastfeeding or plan to breastfeed. It is not known if DATROWAY passes into your breast milk.
Do not breastfeed during treatment with DATROWAY and for 1 month after the last dose.
Tell your healthcare provider about all the medicines you take, including
prescription and over-the-counter medicines, vitamins, and herbal supplements.
How will I receive DATROWAY?
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You will receive DATROWAY into your vein through an intravenous (IV) line by your healthcare
provider.
- DATROWAY is usually given 1 time every three weeks (21-day treatment cycle).
- You will receive your first infusion over 90 minutes. If you do not have problems with your first infusion, you may receive your next infusions over 30 minutes.
- You will be monitored for side effects for at least 1 hour after your first 2 infusions. If you do not have problems after your second infusion, you will be monitored for at least 30 minutes after each following infusion.
- Your healthcare provider will decide how many treatments you need.
- Your healthcare provider will give you medicines before your infusion to help prevent nausea, vomiting, and infusion-related reactions.
- Your healthcare provider may slow down or temporarily stop your infusion of DATROWAY if you have an infusion-related reaction, or permanently stop DATROWAY if you have severe infusion reactions.
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If you miss a planned dose of DATROWAY, call your healthcare provider right away to schedule an appointment. Do not wait until the next planned treatment cycle.
What are the possible side effects of DATROWAY?
DATROWAY can cause serious side effects, including:
- See "What is the most important information I should know about DATROWAY?"
The most common side effects of DATROWAY when used in adults with HR-positive HER2-negative breast cancer include:
- Nausea
- Tiredness
- Decreased white blood cell counts
- Decreased blood levels of calcium
- Hair loss
- Decreased red blood cell counts
- Constipation
- Dry eye
- Vomiting
- Increased blood levels of liver enzymes
- An eye problem called keratitis. See “What is the most important information I should know about DATROWAY?”
- Increased blood levels of alkaline phosphatase
DATROWAY may cause fertility problems in males and females, which may affect your ability to have
children. Talk to your healthcare provider if you have concerns about fertility.
These are not all of the possible side effects of DATROWAY. Call your healthcare provider
for medical advice about side effects. You may report side effects to Daiichi Sankyo at 1-877-437-7763 or to FDA at 1-800-FDA-1088.
Please click here for full Prescribing Information, including WARNINGS AND PRECAUTIONS, and click here for Medication Guide.
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