PMID- 33722465 OWN - NLM STAT- MEDLINE DCOM- 20210624 LR - 20210624 IS - 1437-7780 (Electronic) IS - 1341-321X (Linking) VI - 27 IP - 6 DP - 2021 Jun TI - Primaquine plus clindamycin as a promising salvage therapy for Pneumocystis jirovecii pneumonia: A retrospective analysis in Japanese patients. PG - 924-928 LID - S1341-321X(21)00070-2 [pii] LID - 10.1016/j.jiac.2021.03.001 [doi] AB - Treatment of intractable Pneumocystis jirovecii pneumonia (PCP) patients with primaquine (PQ) in combination with clindamycin (CLDM) was conducted by the Research Group on Chemotherapy of Tropical Diseases (RG-CTD), as a kind of compassionate use. Primaquine was not nationally licensed at the time but imported by RG-CTD for the use in a clinical research to investigate safety and efficacy in malaria treatment. Eighteen Japanese adult patients thus treated were analyzed. Prior to the treatment with PQ-CLDM, most of the patients had been treated with trimethoprim-sulfamethoxazole first, all of which being followed by pentamidine and/or atovaquone treatment. This combination regimen of PQ-CLDM was effective in 16 (89%) patients and developed adverse events (AEs) in five (28%) patients. AEs included skin lesions, methemoglobinemia, and hepatic dysfunction, though none of them were serious. As a second-line or salvage treatment for PCP, PQ-CLDM appears to be a better option than pentamidine or atovaquone. Currently in Japan, both PQ and CLDM are licensed drugs but neither of them is approved for treatment of PCP. Considering the potentially fatal nature of PCP, approval of PQ-CLDM for treating this illness should be urged. CI - Copyright (c) 2021 Japanese Society of Chemotherapy and The Japanese Association for Infectious Diseases. Published by Elsevier Ltd. All rights reserved. FAU - Koga, Michiko AU - Koga M AD - Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan. FAU - Suganuma, Akihiko AU - Suganuma A AD - Department of Infectious Diseases, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan. FAU - Kikuchi, Tadashi AU - Kikuchi T AD - Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan. FAU - Yoshimura, Yukihiro AU - Yoshimura Y AD - Department of Infectious Diseases, Yokohama Municipal Citizen's Hospital, Yokohama, Japan. FAU - Shoji, Kensuke AU - Shoji K AD - Division of Infectious Diseases, National Center for Child Health and Development, Tokyo, Japan. FAU - Kobayashi, Ichiro AU - Kobayashi I AD - Department of Pediatrics, Hokkaido University Hospital, Sapporo, Japan. FAU - Takezaki, Shunichiro AU - Takezaki S AD - Department of Pediatrics, Hokkaido University Hospital, Sapporo, Japan. FAU - Kato, Yasuyuki AU - Kato Y AD - Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan. FAU - Kimura, Mikio AU - Kimura M AD - Department of Internal Medicine, Shin-Yamanote Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan. FAU - Maruyama, Haruhiko AU - Maruyama H AD - Department of Infectious Diseases, Division of Parasitology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan. Electronic address: hikomaru@med.miyazaki-u.ac.jp. CN - Research Group on Chemotherapy of Tropical Diseases, Japan LA - eng PT - Journal Article DEP - 20210313 PL - Netherlands TA - J Infect Chemother JT - Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy JID - 9608375 RN - 3U02EL437C (Clindamycin) RN - MVR3634GX1 (Primaquine) SB - IM MH - Adult MH - Clindamycin/adverse effects MH - Humans MH - Japan MH - *Pneumocystis carinii MH - *Pneumonia, Pneumocystis/drug therapy MH - Primaquine/adverse effects MH - Retrospective Studies MH - Salvage Therapy OTO - NOTNLM OT - Effectiveness OT - Pneumocystis pneumonia OT - Primaquine-clindamycin OT - Salvage therapy OT - Tolerability COIS- Declaration of competing interest All authors have no conflict of interest to declare. EDAT- 2021/03/17 06:00 MHDA- 2021/06/25 06:00 CRDT- 2021/03/16 06:03 PHST- 2021/01/04 00:00 [received] PHST- 2021/02/23 00:00 [revised] PHST- 2021/03/01 00:00 [accepted] PHST- 2021/03/17 06:00 [pubmed] PHST- 2021/06/25 06:00 [medline] PHST- 2021/03/16 06:03 [entrez] AID - S1341-321X(21)00070-2 [pii] AID - 10.1016/j.jiac.2021.03.001 [doi] PST - ppublish SO - J Infect Chemother. 2021 Jun;27(6):924-928. doi: 10.1016/j.jiac.2021.03.001. Epub 2021 Mar 13.