PMID- 17937815 OWN - NLM STAT- MEDLINE DCOM- 20080307 LR - 20211020 IS - 1479-5876 (Electronic) IS - 1479-5876 (Linking) VI - 5 DP - 2007 Oct 15 TI - Mycobacterium avium complex immune reconstitution inflammatory syndrome: long term outcomes. PG - 50 AB - BACKGROUND: To describe long term outcomes of Mycobacterium avium complex (MAC) immune reconstitution inflammatory syndrome (IRIS). METHODS: Cases of MAC IRIS were retrospectively identified at four HIV clinics (Michigan, Maryland, Rhode Island, and Indiana) from 1996-2004. Patients were included if they were initially diagnosed with AIDS and found to have evidence of focal MAC infection documented by tissue culture or PCR after initiating HAART, and at least 6 months of follow up. RESULTS: Among the 20 patients included, the mean age was 40 years, mean CD4 cell count was 24/mm3 at pretreatment baseline and 100/mm3 at time of MAC IRIS diagnosis. Sites of disease included lymph nodes (15 patients [8 peripheral, 8 abdominal and 1 peripheral and abdominal]), gastrointestinal tract (7) and liver (3). Sixteen patients (80%) responded to treatment and were disease free after a mean of 17.4 months of therapy for MAC IRIS; IRIS therapy was withdrawn in 6 without relapse. Four patients (non-responder group) had persistent or relapsing disease despite 27 months of ongoing MAC IRIS treatment. At the time of resolution or last follow-up, the mean CD4 cell count and viral load was 143/mm3 and 7,000 c/mL for responders, and 65/mm3 and 17,000 c/mL for non-responders, respectively. Most patients with peripheral adenopathy were responders (7/8; 88%); many with abdominal adenopathy (4/8; 50%) were nonresponders. CONCLUSION: The majority of patients with MAC IRIS eventually responded to treatment. Our sample size was not adequate to perform statistical analysis, but there was a tendency towards adequate CD4 response to HAART and peripheral rather than intraabdominal adenopathy among responders. FAU - Riddell, James 4th AU - Riddell J 4th AD - Department of Internal Medicine, Division of Infectious Diseases, University of Michigan Health System, Ann Arbor, Michigan, USA. jriddell@umich.edu FAU - Kaul, Daniel R AU - Kaul DR FAU - Karakousis, Petros C AU - Karakousis PC FAU - Gallant, Joel E AU - Gallant JE FAU - Mitty, Jennifer AU - Mitty J FAU - Kazanjian, Powel H AU - Kazanjian PH LA - eng PT - Journal Article DEP - 20071015 PL - England TA - J Transl Med JT - Journal of translational medicine JID - 101190741 RN - 0 (Anti-Infective Agents) SB - IM MH - Abscess MH - Adult MH - Anti-Infective Agents/therapeutic use MH - Antiretroviral Therapy, Highly Active MH - CD4 Lymphocyte Count MH - Female MH - HIV Infections/complications MH - Humans MH - Inflammation/*microbiology MH - Lymph Nodes/microbiology/virology MH - Male MH - Middle Aged MH - Mycobacterium Infections/*metabolism MH - Mycobacterium avium/*metabolism MH - Syndrome MH - Treatment Outcome PMC - PMC2213635 EDAT- 2007/10/17 09:00 MHDA- 2008/03/08 09:00 PMCR- 2007/10/15 CRDT- 2007/10/17 09:00 PHST- 2007/07/10 00:00 [received] PHST- 2007/10/15 00:00 [accepted] PHST- 2007/10/17 09:00 [pubmed] PHST- 2008/03/08 09:00 [medline] PHST- 2007/10/17 09:00 [entrez] PHST- 2007/10/15 00:00 [pmc-release] AID - 1479-5876-5-50 [pii] AID - 10.1186/1479-5876-5-50 [doi] PST - epublish SO - J Transl Med. 2007 Oct 15;5:50. doi: 10.1186/1479-5876-5-50.