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Pembro + Axitinib for mRCC: Dealing with
My mother has advanced Renal Cell Carcinoma (RCC) with metastases to the bones, lungs, and liver.
She started Pembrolizumab (Keytruda) + Axitinib (Inlyta) back in March. The great news is that after just 1 cycle, her immense nerve compression pain stopped completely, so we know the treatment is doing its job.
However, ever since her 2nd cycle, she has been experiencing debilitating episodes of immense stomach cramps and severe gas. During these flare-ups, she can barely eat.
Our current management:
We give her over-the-counter/prescribed gastric medicines.
We temporarily stop the Axitinib for a few days during the peak of the cramps.
After about 3–4 days of holding the Axitinib, the symptoms subside and she gets better, but then the cycle repeats once she starts back up.
Has anyone else dealt with this specific GI issue on this combo? How do you manage the cramping and gas better without constantly di
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Severe GI cramps may be an adverse effect of Axitinib or immune-related colitis from Pembrolizumab. Please inform the treating oncologist promptly. Dose interruption/reduction and evaluation for immune-mediated toxicity may be required.
Next Steps
Oncology review, CBC, LFT, stool evaluation if indicated, and urgent assessment if severe pain, diarrhea, fever, or blood in stools develops.
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What you are describing â cramping and gas that resolves when Axitinib is held and returns when restarted â is a classic pattern of Axitinib-related GI toxicity, which is one of its most common side effects. The good news is that this is a well-recognized and manageable issue. The standard approach when this becomes a recurring cycle of hold-and-restart is to formally request a dose reduction of Axitinib from the treating oncologist â Axitinib has approved lower doses for exactly this reason, and many patients tolerate a reduced dose much better while still maintaining the anti-tumor effect. Additionally, if there is any possibility of immune-related colitis from Pembrolizumab (which can look similar but tends to be more persistent), the oncologist needs to rule that out as it requires a different management approach including possible steroids.
Next Steps
Speak with the treating oncologist urgently to discuss a formal Axitinib dose reduction, rather than repeatedly holding and restarting â this is a medically supported strategy for managing this side effect. Please consult me directly on Practo for a detailed evaluation.
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