Safety and Effectiveness of Granulocyte Transfusions in Resolving Infection in People With Neutropenia (The RING Study)
Summary
The registered summary isn't in our current data snapshot. Read it on the ClinicalTrials.gov record ↗. Why? →
Investigators
The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.
- Bruce Sachais, MD, PHD
University of Pennsylvania
Principal Investigator - Cassandra Josephson, MD
Emory University
Principal Investigator - Darrell Triulzi, MD
University of Pittsburgh Presbyterian and Shadyside/Children's Hospital Pittsburgh
Principal Investigator - David Friedman, MD
Children's Hospital of Philadelphia
Principal Investigator - Eliot Williams, MD
University of Wisconsin, Madison
Principal Investigator - Ellis Neufeld, MD
Children's Hospital Boston/Brigham and Women's Hospital
Principal Investigator - James Bussel, MD
Weill Medical College, Cornell University
Principal Investigator - James George, MD
University of Oklahoma
Principal Investigator - Jan McFarland, MD
Froedtert Hospital
Principal Investigator - Jeffrey McCullough, MD
University of Minnesota
Principal Investigator - Paul Ness, MD
Johns Hopkins University
Principal Investigator - Ronald Strauss, MD
University of Iowa
Principal Investigator - Sherrill Slichter, MD
University of Washington
Principal Investigator - Susan F. Assmann, PhD
Carelon Research
Principal Investigator - Thomas Price, MD
Bloodworks
Study Chair
A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.
Sites
13 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.
- University of Iowa Hospitals and Clinics
Iowa City, Iowa, United States
- Johns Hopkins Hospital
Baltimore, Maryland, United States
- Children'S Hospital Boston
Boston, Massachusetts, United States
- University of Minnesota
Minneapolis, Minnesota, United States
- Weill Medical College, Cornell University
New York, New York, United States
- Montefiore Medical Center
The Bronx, New York, United States
- University of Oklahoma Health Sciences Center
Oklahoma City, Oklahoma, United States
- Chlidren'S Hospital of Philadelphia
Philadelphia, Pennsylvania, United States
- University of Pennsylvania
Philadelphia, Pennsylvania, United States
- University of Pittsburgh Presbyterian and Shadyside
Pittsburgh, Pennsylvania, United States
- University of Washington Medical Center
Seattle, Washington, United States
- University of Wisconsin at Madison
Madison, Wisconsin, United States
- Froedtert Memorial Lutheran Hospital
Milwaukee, Wisconsin, United States
Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.
Drugs studied
No drug or biological interventions are in our data for this study — it may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →
Registration & key dates
Registry attributes as recorded on the ClinicalTrials.gov study record.
- Start
- 30 Apr 2008
- Primary completion
- 30 Apr 2013
- Completion
- 31 May 2013
- Last update posted
- 17 Apr 2015
- Registered enrollment
- 114
- Registry id
- NCT00627393
Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 12 Jul 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.