PMID- 21611869 OWN - NLM STAT- MEDLINE DCOM- 20120424 LR - 20211020 IS - 1435-4373 (Electronic) IS - 0934-9723 (Linking) VI - 31 IP - 2 DP - 2012 Feb TI - Therapeutic drug monitoring of posaconazole in hematology adults under posaconazole prophylaxis: influence of food intake. PG - 161-7 LID - 10.1007/s10096-011-1288-9 [doi] AB - Posaconazole (PCZ) is given at 200 mg three times daily as a fungal prophylaxis in neutropenic hematologic malignancy patients. A relationship between exposure, plasma concentration, and efficacy is suggested. The objectives of this prospective study were to analyze the PCZ plasma concentration in hematology adults at high risk of developing invasive fungal infections (IFIs), and factors that could have an impact on the PCZ plasma concentration. PCZ plasma concentrations were measured after 2, 7, 10, 14, and 21 days of PCZ prophylaxis. Factors such as gender, age, body weight, posology, treatment duration, mucositis, proton pump inhibitor (PPI) use, and food intake were studied. Sixty-three patients were included, with a median age of 52 years (range 17-70) and a median weight of 75 kg (range 47-150). The median PCZ plasma concentration of the 63 patients ranged from 0.42 to 0.48 mg/L. At day 2, 30% of PCZ plasma concentration were under 0.35 mg/L, and at day 7, 74% were <0.70 mg/L. PCZ plasma concentrations were not affected by gender, age, body weight, or treatment duration. We found that food intake had a high influence on PCZ plasma concentrations (p = 0.0049). PCZ was well tolerated. One patient has developed a probable IFI, probably related to a low exposure to PCZ. PCZ therapeutic drug monitoring (TDM) is essential in order to early detect patients with low concentrations, to assess the etiology of such results, and to decide on the treatment strategy to apply. FAU - Eiden, C AU - Eiden C AD - Department of Medical Pharmacology and Toxicology, University Hospital of Montpellier, Montpellier, France. c-eiden@chu-montpellier.fr FAU - Meniane, J C AU - Meniane JC FAU - Peyriere, H AU - Peyriere H FAU - Eymard-Duvernay, S AU - Eymard-Duvernay S FAU - Le Falher, G AU - Le Falher G FAU - Ceballos, P AU - Ceballos P FAU - Fegueux, N AU - Fegueux N FAU - Cociglio, M AU - Cociglio M FAU - Reynes, J AU - Reynes J FAU - Hillaire-Buys, D AU - Hillaire-Buys D LA - eng PT - Journal Article DEP - 20110526 PL - Germany TA - Eur J Clin Microbiol Infect Dis JT - European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology JID - 8804297 RN - 0 (Antifungal Agents) RN - 0 (Antineoplastic Agents) RN - 0 (Triazoles) RN - 6TK1G07BHZ (posaconazole) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Antifungal Agents/administration & dosage/adverse effects/*pharmacokinetics/*therapeutic use MH - Antineoplastic Agents/therapeutic use MH - Chemoprevention MH - Drug Monitoring/*methods MH - *Eating MH - Female MH - Hematologic Neoplasms/*complications/drug therapy MH - Humans MH - Male MH - Middle Aged MH - Mycoses/*prevention & control MH - Triazoles/administration & dosage/adverse effects/*pharmacokinetics/*therapeutic use MH - Young Adult EDAT- 2011/05/26 06:00 MHDA- 2012/04/25 06:00 CRDT- 2011/05/26 06:00 PHST- 2011/02/15 00:00 [received] PHST- 2011/04/26 00:00 [accepted] PHST- 2011/05/26 06:00 [entrez] PHST- 2011/05/26 06:00 [pubmed] PHST- 2012/04/25 06:00 [medline] AID - 10.1007/s10096-011-1288-9 [doi] PST - ppublish SO - Eur J Clin Microbiol Infect Dis. 2012 Feb;31(2):161-7. doi: 10.1007/s10096-011-1288-9. Epub 2011 May 26.