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Clinical trialNCT01713855CompletedInterventional

Vaccine Response After Rituximab for Chronic, Severe Idiopathic Thrombocytopenic Purpura

SponsorNeufeld, Ellis J, MD, PhDEnrollment10Idiopathic Thrombocytopenic PurpuraImmune Thrombocytopenic Purpura
View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

The purpose of this study is to determine how children with a history of severe, chronic Idiopathic Thrombocytopenic Purpura (ITP) who were treated with rituximab might respond to vaccines. Eligible patients are previously or currently enrolled in a study entitled "Open Label, Phase I/II Trial of Rituximab for Chronic, Severe Idiopathic Thrombocytopenic Purpura in Children and Adolescents" and have decided to obtain an inactivated influenza vaccination. These patients will be invited to provide one blood sample prior to vaccination and a second sample following vaccination to quantify immune response to vaccination.
clinicaltrials.gov ↗

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

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

3 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States
  • University of California, Los Angeles

    Los Angeles, California, United States

  • Emory University School of Medicine

    Atlanta, Georgia, United States

  • Children'S Hospital

    Boston, Massachusetts, United States

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

The drug and biological interventions registered on this study, normalized to their RxNorm ingredient where possible.

Inactivated Trivalent Influenza vaccine
Linked drugs open the directory filtered to KOLs working with them.clinicaltrials.gov ↗

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start
31 Oct 2004
Primary completion
—
Completion
31 Mar 2006
Last update posted
25 Oct 2012
Registered enrollment
10
Registry id
NCT01713855
clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 24 Aug 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.