Incidence of Severe COVID-19 Infection in Patients With CLL or B-NHL Who Received Pre-exposure Prophylaxis With Tixagevimab and Cilgavimab in Italy.

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

This is an observational retrospective and prospective multicenter study aimed at describing the role of the COVID -19 prophylaxis with Tixagevimab and Cilgavimab in CLL or indolent B-NHL patients who received first COVID-19 prophylaxis dose between March 2022 and October 2022.

This is an observational retrospective and prospective multicenter study aimed at describing the role of the COVID -19 prophylaxis with Tixagevimab and Cilgavimab in CLL or indolent B-NHL patients.

All CLL or indolent B-cell NHL patients (follicular lymphoma, marginal zone lymphoma, lymphoplasmacytic lymphoma) who received first COVID-19 prophylaxis dose with Tixagevimab and Cilgavimab according to AIFA indication between March 2022 and October 2022 will be included in the study.

Each patient will be followed for a maximum of 12 months from the first COVID-19 prophylaxis dose.

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