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Melanoma Transplant — SCE Medical Oncology MCQ

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HardMelanoma & SkinMelanoma TransplantSCE Medical Oncology

A patient taking inavolisib 9 mg once daily with palbociclib and fulvestrant develops a fasting glucose of 15.4 mmol/L, without ketoacidosis. Inavolisib is interrupted and antihyperglycaemic treatment is intensified. The fasting glucose falls to 8.4 mmol/L on day 6. What is the SmPC-concordant inavolisib action?

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Reveal the answer and explanation

Correct answer: EResume inavolisib at 9 mg once daily after recovery to 8.9 mmol/L by day 6

Explanation lettering: C = shown as A · D = shown as B · A = shown as C · E = shown as D · B = shown as E

B is correct: for fasting glucose above 13.9 to 27.8 mmol/L, inavolisib is interrupted and hyperglycaemia is treated; recovery to 8.9 mmol/L or below within 7 days permits resumption at the same dose. A is reserved for specified recurrent or uncontrolled severe hyperglycaemia rather than this first promptly controlled episode. C would apply when recovery takes at least 8 days or after a qualifying recurrence, not after day-6 recovery. D over-reduces the drug, and E uses an incorrect recovery threshold and ignores the time-dependent rule.

Reference: Itovebi UK summary of product characteristics (Updated 14 May 2026): https://www.medicines.org.uk/emc/product/101718/smpc