title: Hodgkin lymphoma treatment with ABVD in the US and the EU: neutropenia occurrence and impaired chemotherapy delivery.
abstract: BACKGROUND
  In newly diagnosed patients with Hodgkin lymphoma (HL) the effect of doxorubicin, bleomycin, vinblastine and dacarbazine (ABVD)-related neutropenia on chemotherapy delivery is poorly documented. The aim of this analysis was to assess the impact of chemotherapy-induced neutropenia (CIN) on ABVD chemotherapy delivery in HL patients.
  
  
  METHODS
  Data from two similarly designed, prospective, observational studies conducted in the US and the EU were analysed. One hundred and fifteen HL patients who started a new course of ABVD during 2002-2005 were included. The primary objective was to document the effect of neutropenic complications on delivery of ABVD chemotherapy in HL patients. Secondary objectives were to investigate the incidence of CIN and febrile neutropenia (FN) and to compare US and EU practice with ABVD therapy in HL. Pooled data were analysed to explore univariate associations with neutropenic events.
  
  
  RESULTS
  Chemotherapy delivery was suboptimal (with a relative dose intensity < or = 85%) in 18-22% of patients. The incidence of grade 4 CIN in cycles 1-4 was lower in US patients (US 24% vs. EU 32%). Patients in both the US and the EU experienced similar rates of FN across cycles 1-4 (US 12% vs. EU 11%). Use of primary colony-stimulating factor (CSF) prophylaxis and of any CSF was more common in the US than the EU (37% vs. 4% and 78% vs. 38%, respectively). The relative risk (RR) of dose delays was 1.54 (95% confidence interval [CI] 1.08-2.23, p = 0.036) for patients with vs. without grade 4 CIN and the RR of grade 4 CIN was 0.35 (95% CI 0.12-1.06, p = 0.046) for patients with vs. without primary CSF prophylaxis.
  
  
  CONCLUSIONS
  In this population of HL patients, CIN was frequent and FN occurrence clinically relevant. Chemotherapy delivery was suboptimal. CSF prophylaxis appeared to reduce CIN rates.
authors: Institute of Pharmaceutical Medicine, University of Basel, Basel, Switzerland. m.schwenkglenks@unibas.ch
authors: Matthias
authors: M
authors: Schwenkglenks
authors: Ruth
authors: R
authors: Pettengell
authors: Thomas D
authors: TD
authors: Szucs
authors: Eva
authors: E
authors: Culakova
authors: Gary H
authors: GH
authors: Lyman
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000009:adverse effects*; D001761:Bleomycin / Q000009:adverse effects; D003115:Colony-Stimulating Factors / Q000627:therapeutic use; D003606:Dacarbazine / Q000009:adverse effects; D004317:Doxorubicin / Q000009:adverse effects; D005260:Female; D006689:Hodgkin Disease / Q000188:drug therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009503:Neutropenia / Q000139:chemically induced*; D011446:Prospective Studies; D014747:Vinblastine / Q000009:adverse effects
chemical_list: D003115:Colony-Stimulating Factors; D001761:Bleomycin; D014747:Vinblastine; D003606:Dacarbazine; D004317:Doxorubicin