[Show abstract][Hide abstract] ABSTRACT: The incidence of diffuse large B-cell lymphoma (DLBCL) is increasing in the elderly population, which is a more challenging population to treat because of comorbidities and enhanced sensitivity to chemotherapy toxicities. This analysis evaluated the impact of age group on assessment of febrile neutropenia (FN) risk, supportive care management, and chemotherapy delivery.
The IMPACT non-Hodgkin lymphoma (NHL) trial was an observational study conducted in Europe and Australia. This analysis included 1113 patients with DLBCL treated with rituximab (R)-CHOP (cyclophosphamide, doxorubicin [hydroxydaunorubicin], vincristine [Oncovin], and prednisone) every 14 days (n = 409) or every 21 days (n = 704). Outcomes were reported for ages < 65 years and ≥ 65 years. The primary outcome in this analysis was the proportion of patients assessed by investigators as having an overall high (≥ 20%) FN risk who received granulocyte colony-stimulating factor (G-CSF) primary prophylaxis.
For R-CHOP-14, investigators assessed 78% of younger patients and 80% of older patients with ≥ 20% risk of FN, although 14% of younger and 19% of older high-risk patients did not receive G-CSF primary prophylaxis. For R-CHOP-21, investigators assessed 52% of younger and 71% of older patients with ≥ 20% risk of FN; however, 61% of younger and 47% of older high-risk patients did not receive G-CSF primary prophylaxis. Regardless of chemotherapy regimen, rates of FN and unplanned hospitalization were higher in older patients, and delivery of chemotherapy was poorer.
Adherence to G-CSF guidelines in patients assessed with high FN risk was suboptimal in patients with DLBCL receiving R-CHOP chemotherapy, with substantial proportions of both younger and older patients receiving R-CHOP-21 failing to receive optimal G-CSF support. Better application of guidelines could reduce FN rates and improve outcomes.
[Show abstract][Hide abstract] ABSTRACT: IMPACT NHL was a multicenter, observational study in adults with non-Hodgkin lymphoma receiving CHOP (cyclophosphamide, doxorubicin, vincristine, and prednisolone) chemotherapy with or without rituximab. Erythropoietin-stimulating agent treatment was given according to routine clinical practice and physician preference. In a subanalysis, outcomes were evaluated in 207 patients who received darbepoetin alfa (DA). The most common reason (81%) for initiating DA was low/declining hemoglobin (Hb) concentration. Mean (±standard deviation) duration of DA exposure was 8.8 ± 6.9 weeks (mean number of doses, 5.1 ± 4.6). Overall, 23% of patients had chemotherapy and DA treatment synchronized more than 75% of the time. At the time of DA initiation, 67% of patients had Hb concentrations in the guideline-recommended range (9-11 g/dl). Of 89 patients with Hb concentrations <10 g/dl at DA initiation and still receiving DA 5 weeks later, 92% (Kaplan-Meier) achieved Hb concentrations 10-12 g/dl between week 5 and at the end of treatment.
[Show abstract][Hide abstract] ABSTRACT: This analysis from an observational study of clinical practice describes the impact of febrile neutropenia (FN) on chemotherapy delivery and hospitalizations.
Adults with diffuse large B-cell lymphoma (DLBCL) scheduled to receive ≥ 3 cycles of 2- or 3-weekly CHOP with rituximab (R-CHOP-14/21) were eligible. Primary outcome was incidence of FN.
FN data were available for 409 patients receiving R-CHOP-14 and 702 patients receiving R-CHOP-21. FN incidence was R-CHOP-14, 20% (81/409) and R-CHOP-21, 19% (133/702). Rates of primary prophylaxis with granulocyte-colony stimulating factor were R-CHOP-14, 84% (345/409) and R-CHOP-21, 36% (252/702). A large number of patients experienced their first FN episode in cycle 1 (R-CHOP-14, 24/81 [30%]; R-CHOP-21, 63/133 [47%]). Multiple risk factors (≥ 2) for FN were more frequent in patients experiencing FN than in patients not experiencing FN (R-CHOP-14, 60/81 [74%] versus 179/328 [55%]; R-CHOP-21, 98/133 [74%] versus 339/569 [60%]). A similar trend was observed for unplanned hospitalizations (R-CHOP-14, 63/81 [78%] versus 68/328 [21%]; R-CHOP-21, 105/133 [79%] versus 100/569 [18%]). Achievement of chemotherapy relative dose intensity ≥ 90% was lower among patients experiencing FN than in patients not experiencing FN (R-CHOP-14, 30/81 [37%] versus 234/328 [71%]; R-CHOP-21, 83/133 [62%] versus 434/569 [76%]).
In patients with DLBCL treated with R-CHOP-14 or R-CHOP-21, patients with an event of FN were more likely to experience suboptimal chemotherapy delivery and increased incidence of unplanned hospitalizations than those without FN. FN-related hospitalizations are likely to impact chemotherapy delivery and to incur substantial costs.
Supportive Care in Cancer 11/2011; 20(3):647-52. · 2.09 Impact Factor