Examining COVID-19 infection rates in patients with certain blood cancers receiving preventive treatment

Incidence of Severe COVID-19 Infection in Patients With Chronic Lymphocytic Leukemia or Indolent B-cell Non-Hodgkin Lymphoma Who Received Pre-exposure Prophylaxis With Tixagevimab and Cilgavimab in Italy: an Observational Study by the GIMEMA Working Party on Chronic Lymphoproliferative Disorders and by the Fondazione Italiana Linfomi

Observational Gruppo Italiano Malattie EMatologiche dell'Adulto · NCT05803395

This study looks at how well a preventive treatment works in protecting patients with certain blood cancers from severe COVID-19 infections.

Quick facts

Study typeObservational
Enrollment954 (estimated)
Ages18 Years and up
SexAll
SponsorGruppo Italiano Malattie EMatologiche dell'Adulto Academic / other
Drugs / interventionsTixagevimab, Cilgavimab
Locations15 sites (Cosenza and 14 other locations)
Trial IDNCT05803395 on ClinicalTrials.gov

What this trial studies

This observational study investigates the incidence of severe COVID-19 infections in patients with Chronic Lymphocytic Leukemia (CLL) or indolent B-Cell Non-Hodgkin Lymphoma (B-NHL) who received pre-exposure prophylaxis with Tixagevimab and Cilgavimab. It includes both retrospective and prospective data collection from multiple centers in Italy, focusing on patients who received their first dose of the prophylaxis between March and October 2022. Each participant will be monitored for up to 12 months following their initial treatment to assess outcomes related to COVID-19 infection.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with CLL or indolent B-NHL who received the first dose of COVID-19 prophylaxis with Tixagevimab and Cilgavimab during the specified timeframe.

Not a fit: Patients who did not receive the COVID-19 prophylaxis or those with other types of cancer may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide valuable insights into the effectiveness of Tixagevimab and Cilgavimab in preventing severe COVID-19 in vulnerable cancer patients.

How similar studies have performed: While this study focuses on a specific patient population and treatment, similar studies have shown promising results in the use of monoclonal antibodies for COVID-19 prophylaxis in immunocompromised patients.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Age ≥ 18 years
2. Patient with CLL or indolent B-NHL who received the first COVID-19 prophylaxis dose with Tixagevimab and Cilgavimab as per label indication between March 2022 and October 2022.
3. Signed informed consent, if applicable

Exclusion Criteria:

None

Where this trial is running

Cosenza and 14 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Chronic Lymphocytic LeukemiaIndolent B-Cell Non-Hodgkin LymphomaCOVID-19
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.