OncuraBone - Osteosarcoma35-day cycle7 effects documented
A strong three-drug regimen that cures many osteosarcomas, given mostly in hospital. The high-dose methotrexate is given with a 'rescue' medicine (leucovorin) and careful blood-level checks and fluids to clear it safely. Expect very low blood counts, mouth sores, and strong nausea; hearing, kidney, nerve, and heart effects are monitored because they can be lasting.
Get help straight away — this is true on any regimen, on any day.
A temperature of 100.4°F (38°C) or higher during treatment can mean a serious infection while your blood counts are low. Call your team or go to the ER — do not wait it out.
Also urgent: trouble breathing or chest pain · swelling of the face, lips or throat · new confusion or fainting · shaking chills · not being able to keep fluids down.
This is standing guidance shown to everyone. Nothing on this page is based on anything about you, and nobody is monitoring you.
Day 1 is the day of your infusion. These are the effects a retrievable document ties to a day range for this regimen — not a prediction about you.
Typically around days 3–14 · usually worst around days 7–14
Soreness or ulcers in the mouth, often severe, usually around days 5-10. Regular mouth care, pain relief, and sometimes IV nutrition help.
Call your team: Can't eat or drink because of mouth pain.
Typically around days 10–39
Deep drops in infection-fighting white cells, often with fever needing hospital antibiotics. A white-cell booster is used and any fever is treated urgently.
Call your team urgently: Any fever of 100.4°F (38.0°C) or higher — an emergency.
These build with the number of doses, or are measured from when treatment started, so a cycle day would be the wrong shape for them. Each keeps the timing its own source states.
first days after infusion; clearance-dependent
High-dose methotrexate must be cleared from the body on schedule. You'll get a rescue medicine (leucovorin) starting the day after the infusion, IV fluids, and medicine to keep the urine alkaline, plus blood tests to track the methotrexate level. If it clears slowly, it can harm the kidneys, marrow, and mouth — so the team monitors closely and can give an antidote (glucarpidase). Avoid certain medicines (like ibuprofen) that slow clearance.
Call your team urgently: Reduced urination, severe mouth sores, or feeling very unwell after methotrexate — contact your team.
cumulative; often permanent
Cisplatin can cause high-pitch hearing loss or ringing in the ears that builds with dose and can be permanent — especially important in younger patients. Hearing is checked (audiometry) before and during treatment. Report any hearing change.
cumulative, dose-dependent
Cisplatin can stress the kidneys (managed with IV fluids and bloodwork) and cause numbness/tingling in the hands and feet that builds over cycles. It can also lower magnesium and other salts.
Call your team: Much less urine than usual, marked swelling, or numbness that affects walking.
cumulative; can appear months-years later
Doxorubicin can weaken the heart's pumping, with risk rising as the total dose adds up — so the cumulative dose is capped and heart function is checked (echo). Report breathlessness or swelling.
Call your team: New shortness of breath, swelling, or a rapid/irregular heartbeat.
Sickness in the first 24 hours is the "acute" phase and usually peaks 2-3 hours in; anything from 24 to 120 hours is the "delayed" phase.
Cisplatin is strongly nausea-causing (managed with strong prevention), and hair loss is expected and grows back after treatment.