Histoplasmosis After Solid Organ Transplant

• Published in: Clinical infectious diseases Vol. 57; no. 11; pp. 1542 - 1549
• Main Authors: Assi, Maha, Martin, Stanley, Wheat, L. Joseph, Hage, Chadi, Freifeld, Alison, Avery, Robin, Baddley, John W., Vergidis, Paschalis, Miller, Rachel, Andes, David, Young, Jo-Anne H., Hammoud, Kassem, Huprikar, Shirish, McKinsey, David, Myint, Thein, Garcia-Diaz, Julia, Esguerra, Eden, Kwak, E. J., Morris, Michele, Mullane, Kathleen M., Prakash, Vidhya, Burdette, Steven D., Sandid, Mohammad, Dickter, Jana, Ostrander, Darin, Antoun, Smyrna Abou, Kaul, Daniel R.
• Format: Journal Article
• Language: English
• Published: Oxford OXFORD UNIVERSITY PRESS 01.12.2013; Oxford University Press
• Subjects: Adolescent; Adult; Aged; Aged, 80 and over; and Commentaries; Antifungal Agents - therapeutic use; Antigens; ARTICLES AND COMMENTARIES; Biological and medical sciences; Child; Child, Preschool; Demographics; Disease risks; Female; Histoplasmoses; Histoplasmosis; Histoplasmosis - diagnosis; Histoplasmosis - drug therapy; Histoplasmosis - epidemiology; Histoplasmosis - immunology; Human mycoses; Humans; Immunocompromised Host; Immunosuppression; Infectious diseases; Male; Medical diagnosis; Medical sciences; Medical treatment; Middle Aged; Mycoses; Organ Transplantation - adverse effects; Organ Transplantation - statistics & numerical data; Pathology; Predisposing factors; Relapse; Retrospective Studies; Risk Factors; Transplantation; Transplants & implants; Treatment Outcome; Tropical mycoses; United States - epidemiology; Urine; Young Adult; United States; Infection; Mycosis; Histoplasmosis; fungal infection; solid organ transplant; histoplasmosis
• ISSN: 1058-4838; 1537-6591
• DOI: 10.1093/cid/cit593

Background. To improve our understanding of risk factors, management, diagnosis, and outcomes associated with histoplasmosis after solid organ transplant (SOT), we report a large series of histoplasmosis occurring after SOT. Methods. All cases of histoplasmosis in SOT recipients diagnosed between 1 January 2003 and 31 December 2010 at 24 institutions were identified. Demographic, clinical, and laboratory data were collected. Results. One hundred fifty-two cases were identified: kidney (51%), liver (16%), kidney/pancreas (14%), heart (9%), lung (5%), pancreas (2%), and other (2%). The median time from transplant to diagnosis was 27 months, but 34% were diagnosed in the first year after transplant. Twenty-eight percent of patients had severe disease (requiring intensive care unit admission); 81% had disseminated disease. Urine Histoplasma antigen detection was the most sensitive diagnostic method, positive in 132 of 142 patients (93%). An amphotericin formulation was administered initially to 73% of patients for a median duration of 2 weeks; step-down therapy with an azole was continued for a median duration of 12 months. Ten percent of patients died due to histoplasmosis with 72% of deaths occurring in the first month after diagnosis; older age and severe disease were risk factors for death from histoplasmosis. Relapse occurred in 6% of patients. Conclusions. Although late cases occur, the first year after SOT is the period of highest risk for histoplasmosis. In patients who survive the first month after diagnosis, treatment with an amphotericin formulation followed by an azole for 12 months is usually successful, with only rare relapse.