Abemaciclib and Ebola Zaire Vaccine, Live: Interaction Details
AI-assisted, pharmacist-reviewed · AI content regenerated Jul 11, 2026 · Source data updated Jul 10, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Abemaciclib
Ebola Zaire Vaccine, Live
No brand names on record
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
Abemaciclib (Verzenio) is a cancer medicine that can weaken your immune system, which is your body's defense against germs. The live Ebola vaccine uses a weakened but living form of the virus to teach your body how to fight it. In someone with a healthy immune system, that's safe. But if your defenses are lowered by chemotherapy, your body may not be able to keep even the weakened vaccine virus in check, and it could actually cause an infection.
The good news is this is well understood and manageable. Please don't stop your cancer treatment or get any vaccine on your own. Talk with your oncologist or pharmacist first so they can time things safely for you.
Interaction: Abemaciclib, a CDK4/6 inhibitor used in breast cancer, can produce immunosuppression. Co-administration with the live attenuated Ebola Zaire vaccine risks vaccine-derived infection because a blunted immune response may fail to control the replicating vaccine strain. This is a pharmacodynamic interaction, not enzyme-mediated; neither agent's metabolism is relevant here.
- Direction: increased risk of live-vaccine infection; vaccine efficacy may also be diminished.
- Severity/Evidence: major, established.
- Management: Generally avoid live vaccines in severely immunocompromised patients. Live vaccination may be considered in malignancy patients in remission with restored immunocompetence and chemotherapy discontinued for at least 3 months.
What happens
An increased risk of infection by the live vaccine
Interaction Deep Dive
As a rule, live vaccines should not be administered to patients who are severely immunocompromised2. In immunocompromised individuals, the ebola vaccine has not undergone evaluation for either safety or efficacy, and its effectiveness in such patients may be reduced3. A live vaccine may be given to individuals with leukemia, lymphoma, or other malignancies provided their disease is in remission, their immunocompetence has been restored, and at least 3 months have elapsed since chemotherapy was stopped1.
Why it happens (mechanism)
Decreased immune response allows live vaccine to produce infection
How to manage this interaction
What your care team typically does:
- Generally avoids giving live vaccines, including the Ebola vaccine, while you are on immune-suppressing cancer therapy like abemaciclib.
- May consider a live vaccine only once your disease is in remission, your immune function has recovered, and chemotherapy has been stopped for at least 3 months.
- May review your immune status and vaccination timing individually.
What you should do: Keep taking your abemaciclib exactly as prescribed. Do not arrange this vaccine on your own. Before any vaccination, tell the pharmacist or provider that you take abemaciclib, and check timing with your oncologist.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Abemaciclib and Ebola Zaire Vaccine, Live together?
Live vaccines like the Ebola Zaire vaccine are generally avoided while taking immune-weakening abemaciclib because the vaccine could cause infection. Let your oncology team decide on timing, typically only after remission and at least 3 months off chemotherapy. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Abemaciclib and Ebola Zaire Vaccine, Live interaction?
It is rated major. Potentially serious — often needs a change or close monitoring.
How quickly could this interaction happen?
The documented onset is "unspecified". The timing of this interaction is not well characterized.
How is the Abemaciclib and Ebola Zaire Vaccine, Live interaction managed?
What your care team typically does: Generally avoids giving live vaccines, including the Ebola vaccine, while you are on immune-suppressing cancer therapy like abemaciclib. May consider a live vaccine only once your disease is in remission, your immune function has recovered, and chemotherapy has been stopped for at least 3 months. May review your immune status and vaccination timing individually.… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "established". Well documented — supported by controlled studies or strong clinical data.
Questions for your pharmacist
- Does my dose of Abemaciclib or Ebola Zaire Vaccine, Live need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there a safer alternative to one of these medications for me?
References (3)
- Centers for Disease Control and Prevention (CDC): Vaccines & Immunizations: altered immunocompetence. Centers for Disease Control and Prevention (CDC). Atlanta, GA. 2024.
- National Center for Immunization and Respiratory Diseases (NCIRD): Vaccines & immunizations: contraindications and precautions. Centers for Disease Control and Prevention (CDC). Atlanta, GA. 2024.
- Product Information: Adenovirus type 4 and type 7 vaccine live oral enteric- coated tablets, adenovirus type 4 and type 7 vaccine live oral enteric coated tablets. Teva Pharmaceuticals USA Inc (per FDA), North Wales, PA, 2019. DailyMed
Keep reading about Abemaciclib
Keep reading about Ebola Zaire Vaccine, Live
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