# Disseminated Mycobacterium avium Complex Infection Following CD3/CD20 Bispecific Antibody Therapy in a Patient With Follicular Lymphoma

## TL;DR

A patient with follicular lymphoma developed a rare infection after receiving a new type of antibody therapy.

## Contribution

This is the first well-documented case of disseminated Mycobacterium avium complex following bispecific antibody therapy.

## Key findings

- Disseminated Mycobacterium avium complex infection occurred in a patient undergoing CD3/CD20 bispecific antibody therapy.
- Such opportunistic infections are rare but significant in patients receiving bispecific antibody treatments.

## Abstract

Infections remain a major concern following bispecific antibody therapy but are not well described in pivotal trials. We present the first well-documented case of a classic but rare opportunistic infection, disseminated Mycobacterium avium complex, in a patient receiving bispecific antibody therapy.