There was no correlation between MGMT and neutropenia: grade 0–2 patients had a median value of 12.8 Fm μg−1 (range 3.1–42.2 Fm μg−1) and grade 3–4 patients a median of 12.3 Fm μg−1 (range 2.8–52.5 Fm μg−1) at baseline and a median of 4.6 Fm μg−1 (range 0.4–31.3 Fm μg−1) and 6.1 Fm μg−1 (1.3–12.3 Fm μg−1), respectively, on day 5. The gene discussed is MGMT; the disease is neutropenia.