Meet the Team

  • David Fajgenbaum, MD, MBA, MSC, FCPP

    Founding Director of the Center for Cytokine Storm Treatment & Laboratory

    Dr. David Fajgenbaum, MD, MBA, MSc, is an Assistant Professor of Medicine in Translational Medicine & Human Genetics at the University of Pennsylvania, Executive Director of the Castleman Disease Collaborative Network, Associate Director of Patient Impact for the Penn Orphan Disease Center, and national bestselling author of Chasing My Cure: A Doctor's Race to Turn Hope Into Action. He is also a patient battling idiopathic multicentric Castleman disease (iMCD).

  • Joshua Brandstadter, MD, PhD, MSc

    Associate Director, Clinical Research

    Dr. Joshua Brandstadter is a physician-scientist and Instructor of Medicine in the Division of Hematology/Oncology at the University of Pennsylvania. As Director of Clinical Research for the CSTL, Dr. Brandstadter oversees the ACCERLERATE Natural History Registry to better understand patient experiences and the comparative effectiveness of different treatments. He cares for patients with Castleman Disease in clinic and pursues laboratory research to better understand the causes of the disease. Dr. Brandstadter holds an MSc in Integrated Immunology from the University of Oxford and a combined MD/PhD from Duke University. He completed his internal medicine and hematology/oncology training at the Hospital of the University of Pennsylvania.

  • Melanie Mumau, PhD

    Associate Director, Immunology

    Melanie Mumau, PhD, is the Associate Director of Immunology at the Center for Cytokine Storm Treatment & Laboratory (CSTL) at the University of Pennsylvania. Melanie is an experimental immunologist by training and oversees all research related to the translational laboratory. She is currently working on understanding the mechanisms that drive cytokine storms and developing new treatments for patients. Melanie earned her PhD in Microbiology & Immunology from Columbia University and prior to joining the CSTL, her research focused on how the immune system regulates the development of blood cells. Melanie enjoys playing soccer, skiing, and making pizza.

  • Michael V. Gonzalez, PhD, MSc

    Associate Director, Basic and Translational Research

    Mike Gonzalez is the Associate Director of Basic and Translational Research at the Center for Cytokine Storm Treatment and Laboratory (CSTL) within the Perelman School of Medicine at the University of Pennsylvania. He obtained his PhD in Immunology and Infectious Diseases from Washington State University and was a postdoctoral fellow and bioinformatics scientist at the Center for Applied Genomics at the Children’s Hospital of Philadelphia before coming to the CSTL. His research focuses on utilizing novel ’omics technologies to gain insights into the genetic and cellular architectures of Castleman Disease and other disorders involving autoimmunity.

  • Joseph Zinski, PhD

    Senior Research Investigator

    Joseph Zinski PhD is a Senior Research Investigator at the Center for Cytokine Storm Treatment and Laboratory (CSTL) within the Perelman School of Medicine at the University of Pennsylvania. He received his BS from UConn in Chemical Engineering and his PhD from UPenn in cell and developmental biology. He is using bioinformatic, machine learning, and deep learning to develop better diagnostic tools and treatments for Castleman disease.

  • Abiola Irvine

    Research Specialist

    Abiola Irvine is a Research Specialist in the Cytokine Storm and Treatment Laboratory at the Perelman School of Medicine. She supports the translational research team in the experimental lab by using immune-based assays and other methods to further our understanding of Castleman Disease. Prior to joining the CSTL team Abiola earned her BS in Psychology with a neuroscience minor from Haverford College and looks forward to applying to medical school in the future. Outside of the lab Abiola enjoys hiking, roller skating, and playing with her dog Hendrxx.

  • Bridget Austin, MS

    Biobank Program Manager

    Bridget Austin is the Biobank Project Manager for the Center for Cytokine Storm Treatment & Laboratory (CSTL) at the University of Pennsylvania. As such, Bridget works as a clinical liaison between the research and clinical sides of the CSTL, assists with various research projects such as the ACCELERATE Natural History Registry, and coordinates biological sample donation to the CSTL's Castlebank. Bridget earned her MS in Psychology from Villanova University.

  • Mateo Sarmiento Bustamante

    Senior Data Analyst

    Mateo Sarmiento is a Senior Data Analyst for the Center for Cytokine Storm Treatment & Laboratory (CSTL) at the Perelman School of Medicine. He synthesizes and analyzes information across a Castleman patient’s medical history to gain insight on things such as the wide spectrum of symptoms and the effectiveness of treatment regimens that Castleman patients experience. Mateo looks forward to spending his gap years at the CSTL before applying to medical school. Prior to joining the CSTL, Mateo earned his BA in Neuroscience at the University of Pennsylvania where he researched the epigenetics of drug addiction.

  • Saishravan Shyamsundar

    Data Analyst

    Saishravan Shyamsundar is a Data Analyst for the Center for Cytokine Storm & Treatment Laboratory (CSTL) at Perelman School of Medicine. He earned a Bachelor of Science in Biomedical Engineering from Rensselaer Polytechnic Institute and a Master of Science in Biomedical Sciences from Geisinger Commonwealth School of Medicine. At CSTL, he supports the ACCELERATE Registry Team (ART) in data compilation and analysis of medical records of Castleman Disease patients. The analysis of this data could then provide further insights into understanding the mechanisms of the disease and identifying effective treatment options. He hopes that his work with this team helps lead to better prognosis for patients with Castleman Disease

  • Larissa Borys

    Clinical Research Coordinator

    Larissa Borys is a Clinical Research Coordinator for the Center for Cytokine Storm Treatment & Laboratory (CSTL) at the University of Pennsylvania. She supports the ACCELERATE Natural History Registry and works closely with the CSTL’s Castlebank to ensure proper data compilation of the diagnosis and treatment processes for patients with Castleman Disease. Prior to joining the CSTL, Larissa researched biomarker discovery and development for neurodegenerative diseases at Columbia University Irving Medical Center. She earned her BA in Neuroscience at the University of Pennsylvania. Larissa will be working at the CSTL before applying to medical school.n goes here

  • Amber Vas

    Executive Administrator

    Amber Vas is the Executive Administrator for the Center for Cytokine Storm Treatment & Laboratory (CSTL) at the Perelman School of Medicine. She provides direct support for the Director of the CSTL and overseas the administrative functions of the CSTL’s various projects and events. Prior to her work for the CSTL, Amber was the executive coordinator for the Department of Biostatics, Epidemiology, and Informatics and the Center for Health Behavior Research. Amber earned her BA in Psychology from the University of Richmond.

  • Payton Morrissey

    Payton Morrissey

    Executive Assistant

    Payton Morrissey is the Executive Assistant to David Fajgenbaum, MD, MBA, MSc at the Cytokine Storm Treatment & Laboratory (CSTL) at the Perelman School of Medicine. She provides direct support to the Director of the CSTL and oversees calendar management and the coordination of travel and events. Prior to joining the CSTL, Payton was a cybersecurity consultant and media coordinator for a cybersecurity firm. She graduated with her B.S. in Security and Risk Analysis from the College of Information Sciences and Technology at Penn State University.

  • Divyaraj Singh Nirwan

    Divyaraj Singh Nirwan

    Biobank Assistant

    Divyaraj Nirwan is the Biobank assistant for Centre for Cytokine Storm Treatment & Laboratory (CSTL) and helps in expanding its sample biobank (Castlebank) and collaborates with members of the translational team on various tasks. He is a dedicated and skilled biotechnologist with a strong academic background in bioinformatics, pursuing his master of biotechnology at the University of Pennsylvania. He has diverse experience in quality control and innovative research projects. His expertise spans a wide range of technical and software skills, complemented by his strong organizational abilities and commitment to academic and community initiatives.

Former Lab Members and Alumni

Tracey Sikora. Currently Vice President of Research & Clinical Programs at National Organization for Rare Disorders (NORD).

Criswell Lavery, MPH. Project Manager & Health Research Specialist at the Corporal Michael J. Crescenz VA Medical Center.

Sheila Pierson, MS. Currently a medical student at Temple University School of Medicine

Natalie Mango. Currently a medical student at the Perleman School of Medicine at the University of Pennsylvania

Jasira Ziglar, MD, MPH. Currently a resident in Internal Medicine at University of Massachusetts.

Helen Partridge, MD. Currently a resident in psychiatry at Perelman School of Medicine.

Dustin Shilling, PhD. Currently a senior associate at Spark Therapeutics.

Faizaan Ahkter, DO. Currently a resident in internal medicine at Rowan University.

Erin Napier, MD. Currently a resident in ophthalmology at UCLA Jules Stein Eye Institute.

Alexander Suarez, MD. Currently a resident in neurosurgery at Duke School of Medicine.

Dale Kobrin, MD. Currently a resident in internal medicine at Allegheny General Hospital.

Eric Haljasmaa. Currently a medical student at Lake Erie College of Osteopathic Medicine.

Katherine Floess, MD. Currently a resident of internal medicine at Montefiore Medical Center.

Sophia Parente, MD. Currently a resident of internal medicine at the University of Minnesota.

Mark-Avery Tamakloe. Currently a medical student at Rutgers Robert Wood Johnson Medical School.

Victoria (Tori) Powers. Currently a medical student at Sidney Kimmel Medical College. 

Alexander (Alek) Gorzewski. Currently a medical student at Northwestern University Feinberg School of Medicine.

Rozena Rasheed. Currently central laboratory specialist for portfolio sourcing and relationship management at Merck Pharmaceuticals.

Alexis Phillips, MD. Currently a resident in internal medicine at Massachusetts General Hospital.

Ruth-Anne Pai, PhD.  Currently a Chief Scientific Consultant at Pai Advisory, LLC.

Johnson Khor, MCHI. Currently a medical student at the University of Queensland-Ochsner Clinical School.

Hemi Park, MPHCurrently a program manager at Massachusetts General Hospital 

Freda Coren.  Currently a medical student at the University of Texas at Austin.

Reece Williams. Currently a medical student at Emory University.  

Daniel Arenas, PhD.  Currently a resident in pathology at Stanford University.

We are always looking for talented individuals to join the lab!