G-CSF use in patients receiving first-line chemotherapy for non-Hodgkin's lymphoma (NHL) and granulocyte-colony stimulating factors (G-CSF) as observed in clinical practice in Italy.

Treatment of non-Hodgkin lymphoma (NHL) requires chemotherapy regimens with significant risk of febrile neutropenia (FN). For patients at ≥20% FN risk, guidelines recommend primary prophylaxis (PP) with granulocyte-colony stimulating factor (G-CSF). This study assessed whether G-CSF use in NHL was in line with recommendations in routine practice. This was a retrospective, observational study of adult NHL patients receiving first-line (R)CHOP-like chemotherapy and G-CSF support between June 2010 and 2012, in Italy. The primary outcome was whether G-CSF was provided as PP, which was defined as G-CSF initiation on days 1-3 after chemotherapy, ≥3 days' use for daily G-CSFs and continued prophylaxis from cycle 1 across all cycles. Secondary prophylaxis was defined as continued prophylaxis from cycle 2 or later, and all other use was defined as Suboptimal. The analysis included 199 patients, 61% of whom had diffuse large B cell lymphoma and 21% follicular lymphoma. (R)CHOP-21 was given to 52% of patients and (R)CHOP-14 to 32%. Overall, 29% of patients received PP, while two-thirds received Suboptimal G-CSF. Of patients receiving daily G-CSF, 3% received PP and 94% received Suboptimal use; with pegfilgrastim, 65% received PP and 26% Suboptimal use. FN occurred in 13 patients (7%) and grade 3/4 neutropenia in 43%. Chemotherapy dose delays occurred in 22% and dose reductions in 18% of patients. Delivery of G-CSF, particularly daily G-CSFs, was not in accordance with guideline or product label recommendations in a large proportion of NHL patients receiving chemotherapy in Italy.