Abstract
We present the case of a 39-year-old white man with a Myobacterium avium-intracellulare pulmonary infection found to have a CD4 + count of 172 cells/mm 3 and diagnosed subsequently with idiopathic CD4 + lymphopenia (ICL). After receiving clathromycin for 4 months with minimal improvement, the patient was started on pegylated subcutaneous interleukin (IL)-2 at 600 000 units daily. Later, he received incrementally higher pegylated IL-2 doses until he reached a maintenance dose 3 months later of 11 million units weekly divided into three equal doses. After 5 months of therapy, the patient's chronic cough resolved completely, sputum cultures became negative for Myobacterium avium-intracellulare and the CD4 + T cell count increased to 553 cells/mm 3. After 35 months of well-tolerated IL-2 treatments and no recurrence of any opportunistic infections, IL-2 treatment was stopped. CD4 + counts 6 and 9 months after discontinuing IL-2 treatment were 596 and 378 cells/mm 3 respectively, and he remains asymptomatic. This report supports IL-2 treatment for ICL-associated opportunistic infections as a safe and potentially efficacious treatment option, especially when combined with more traditional treatment regimens.
Original language | English (US) |
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Pages (from-to) | 440-445 |
Number of pages | 6 |
Journal | Clinical and Experimental Immunology |
Volume | 156 |
Issue number | 3 |
DOIs | |
State | Published - Jun 2009 |
Keywords
- ICL
- IL-2 treatment
- Lymphopenia
- MAI
- T cell
ASJC Scopus subject areas
- Immunology and Allergy
- Immunology