John N Galgiani

John N Galgiani

Professor, Medicine
Professor, Internal Medicine
Professor, Immunobiology
Director, Valley Fever Center for Excellence
Member of the Graduate Faculty
Professor, BIO5 Institute
Primary Department
Department Affiliations
Contact
(520) 626-4968

Work Summary

Valley Fever (coccidioidomycosis) occurs more in Arizona than anywhere else. My research and others at the Valley Fever Center for Excellence involve understanding how disease is caused by infection, how the immune system stops or prevents illness, and how we can better diagnose, treat, or prevent this public health problem.

Research Interest

Dr. Galgiani has focused his career on Arizona’s special problems with Valley Fever. His work has included studies of the impact of Valley Fever on the general population and on special groups such as organ transplant recipients and patients with AIDS. For 19 years, as part of the NIH-sponsored Mycoses Study Group, Dr. Galgiani has been the project director of a coccidioidomycosis clinical trials group. Through collaboration, this group has evaluated new therapies for Valley Fever more rapidly and with greater clarity than might otherwise have been possible by investigators working in isolation. Dr. Galgiani has also been involved with efforts to prevent Valley Fever through vaccination. His group discovered and patented a recombinant antigen which is the basis for a vaccine candidate suitable for further development and clinical trials. Most recently, he has become the project leader for developing a new drug, nikkomycin Z, for treating Valley Fever. With recent NIH and FDA grant awards, clinical trials with this drug were resumed in 2007. Dr. Galgiani is also Chief Medical Officer of Valley Fever Solutions, Inc, a start-up company founded to assist in the drug’s development. In 1996, the Arizona Board of Regents accepted Dr. Galgiani’s proposal to establish the Valley Fever Center for Excellence for the Arizona universities. Based at the University of Arizona, the Center is pledged to spread information about Valley Fever, help patients with the severest complications of this disease, and to encourage research into the biology and diseases of its etiologic agent. The Center maintains a website (www.VFCE.Arizona.edu) and answers inquiries from health care professionals located in Arizona, other parts of the United States, and even from other countries. The Valley Fever Corridor Project, begun in 2009, intends to facilitate communication among Arizona clinicians to also improve patient care. In 2011, The Valley Fever Center in Phoenix was announced as a partnership between St. Joseph’s Hospital and the UA College of Medicine in Phoenix. It began operation in June, 2012. Research is increasing into the environmental biology of the fungus within its desert soil habitat as well as how the fungus caused disease and the body’s immunity controls it. Since Arizona has the only medical schools situated directly within the endemic region for Valley Fever, it is quite appropriate that Arizona lead in solving this problem. As Director of the Center, Dr. Galgiani is working for its full implementation as a means of ensuring an institutional commitment to accomplish this goal. Keywords: Coccidioidomycosis, Valley Fever, antifungal drugs, vaccines, serologic tests,

Publications

Ostrosky-Zeichner, L., Casadevall, A., Galgiani, J. N., Odds, F. C., & Rex, J. H. (2010). An insight into the antifungal pipeline: selected new molecules and beyond. Nature reviews. Drug discovery, 9(9), 719-27.

Invasive fungal infections are increasing in incidence and are associated with substantial mortality. Improved diagnostics and the availability of new antifungals have revolutionized the field of medical mycology in the past decades. This Review focuses on recent developments in the antifungal pipeline, concentrating on promising candidates such as new azoles, polyenes and echinocandins, as well as agents such as nikkomycin Z and the sordarins. Developments in vaccines and antibody-based immunotherapy are also discussed. Few therapeutic products are currently in active development, and progression of therapeutic agents with fungus-specific mechanisms of action is of key importance.

Bennett, J. E., Powers, J., Walsh, T., Viscoli, C., de Pauw, B., Dismukes, W., Galgiani, J., Glauser, M., Herbrecht, R., Kauffman, C., Lee, J., Pappas, P., Rex, J., & Verweij, P. (2003). Forum report: issues in clinical trials of empirical antifungal therapy in treating febrile neutropenic patients. Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 36(Suppl 3), S117-22.

There is inferential evidence that some patients with prolonged neutropenia and fever not responding to antibacterial agents are at sufficient risk of deep mycoses to warrant empirical therapy, although superiority of an antifungal agent over placebo has not been conclusively demonstrated. Amphotericin B deoxycholate, liposomal amphotericin B, and intravenous itraconazole followed by oral itraconazole solution are licensed in the United States for this indication. Fluconazole and voriconazole have given favorable results in clinical trials of patients with low and high risk of deep mold infections, respectively. Design features that can profoundly influence outcome of empirical trials are (1) inclusion of low-risk patients, (2) failure to blind the study, (3) obscuration of antifungal effects by changing antibacterial antibiotics, (4) failure to balance both arms of the study in terms of patients with prior antifungal prophylaxis or with severe comorbidities, (5) the merging of end points evaluating safety with those of efficacy, and (6) choice of different criteria for resolution of fever.

Shubitz, L. F., Roy, M. E., Nix, D. E., & Galgiani, J. N. (2013). Efficacy of Nikkomycin Z for respiratory coccidioidomycosis in naturally infected dogs. Medical mycology, 51(7), 747-54.

Nikkomycin Z (NikZ) is a chitin synthase inhibitor with antifungal efficacy against Coccidioides spp. and other endemic fungi. Dogs suffer a rate and range of natural coccidioidomycosis similar to humans and were considered an excellent model for initially testing NikZ against naturally acquired disease. Twelve dogs with coccidioidal pneumonia that had been present for an average of three months were treated with 250 mg (5-15 kg) or 500 mg (> 15-30 kg) twice daily for 60 days. Nine dogs completed the course of treatment and seven dogs had improvement in disease based on radiographs, clinicopathological parameters, physical examination findings, and subjective assessment by owners; three dogs had resolution or near resolution of disease. Based on this small study, NikZ shows efficacy to treat naturally acquired coccidioidomycosis and merits further development for trials in humans.

Rex, J. H., Pfaller, M. A., Galgiani, J. N., Bartlett, M. S., EspinelIngroff, A., Ghannoum, M. A., Lancaster, M., Odds, F. C., Rinaldi, M. G., Walsh, T. J., & Barry, A. L. (1997). Development of interpretive breakpoints for antifungal susceptibility testing: Conceptual framework and analysis of in vitro in vivo correlation data for fluconazole, itraconazole, and Candida infections. CLINICAL INFECTIOUS DISEASES, 24(2), 235-247.
Wack, E. E., Ampel, N. M., Sunenshine, R. H., & Galgiani, J. N. (2015). The Return of Delayed-Type Hypersensitivity Skin Testing for Coccidioidomycosis. Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 61(5), 787-91.

A skin test that detects dermal hypersensitivity in persons with past infection with Coccidioides species is again available for clinical use. Nearly all of the clinical studies with similar materials were published prior to the 1990s, and as a result, many practicing physicians will be unfamiliar with how skin testing for coccidioidomycosis might be useful in patient management or as a research tool. We review clinical and epidemiological studies with past skin test antigens, the composition of past and current skin test preparations with particular attention to differences in the preservatives, and how the current preparation could be used today.