PMID- 17215857 OWN - NLM STAT- MEDLINE DCOM- 20070413 LR - 20151119 IS - 0887-6924 (Print) IS - 0887-6924 (Linking) VI - 21 IP - 3 DP - 2007 Mar TI - Levels of soluble HLA-I and beta2M in patients with acute myeloid leukemia and advanced myelodysplastic syndrome: association with clinical behavior and outcome of induction therapy. PG - 480-8 AB - beta-2 Microglobulin (beta2M), a subunit of human leukocyte antigen-class I (HLA-I), is well established as a marker of prognosis in various solid tumors and hematologic malignancies. The prognostic role of intact free-circulating HLA-I (sHLA-I) is less well understood. We compared the clinical relevance of plasma levels of sHLA-I and beta2M in patients with acute myeloid leukemia (AML; n=209) or advanced myelodysplastic syndrome (MDS; n=98). sHLA-1 and beta2M levels were significantly higher in AML and MDS patients than in control subjects, but did not differ significantly between the two disease groups. In AML patients, multivariate analysis showed both sHLA-1 and beta2-M to be highly predictive of complete remission (CR), survival and duration of complete response (CRD). In MDS, the predictive value of the two markers differed substantially from one another: beta2M was associated with survival, CR and CRD, whereas sHLA-I was not. These findings not only establish the role of sHLA-I as a tumor marker in AML but also support that MDS is clinically and biologically distinct from AML. sHLA-I has been reported to be an immunomodulator inhibiting the cytotoxic effects of T-lymphocytes, which may offset its predictive value for disease aggressiveness in patients with MDS. FAU - Albitar, M AU - Albitar M AD - Department of Hematopathology, Quest Diagnostics Nichols Institute, San Juan Capistrano, CA 92690, USA. maher.x.albitar@questdiagnostics.com FAU - Johnson, M AU - Johnson M FAU - Do, K A AU - Do KA FAU - Day, A AU - Day A FAU - Jilani, I AU - Jilani I FAU - Pierce, S AU - Pierce S FAU - Estey, E AU - Estey E FAU - Kantarjian, H AU - Kantarjian H FAU - Keating, M AU - Keating M FAU - Verstovsek, S AU - Verstovsek S FAU - O'brien, S AU - O'brien S FAU - Giles, F J AU - Giles FJ LA - eng PT - Comparative Study PT - Journal Article DEP - 20070111 PL - England TA - Leukemia JT - Leukemia JID - 8704895 RN - 0 (Biomarkers, Tumor) RN - 0 (HLA Antigens) RN - 0 (Neoplasm Proteins) RN - 0 (beta 2-Microglobulin) RN - 04079A1RDZ (Cytarabine) RN - 7M7YKX2N15 (Topotecan) RN - FA2DM6879K (Vidarabine) RN - P2K93U8740 (fludarabine) RN - ZRP63D75JW (Idarubicin) SB - IM MH - Acute Disease MH - Adult MH - Aged MH - Aged, 80 and over MH - Antineoplastic Combined Chemotherapy Protocols/*therapeutic use MH - Biomarkers, Tumor/*blood MH - Cytarabine/administration & dosage MH - Disease Progression MH - Female MH - HLA Antigens/*blood MH - Humans MH - Idarubicin/administration & dosage MH - Kaplan-Meier Estimate MH - Leukemia, Myeloid/*blood/drug therapy/mortality MH - Male MH - Middle Aged MH - Myelodysplastic Syndromes/*blood/drug therapy/mortality MH - Neoplasm Proteins/*blood MH - Predictive Value of Tests MH - Proportional Hazards Models MH - Remission Induction MH - Solubility MH - Topotecan/administration & dosage MH - Treatment Outcome MH - Vidarabine/administration & dosage/analogs & derivatives MH - beta 2-Microglobulin/*blood EDAT- 2007/01/12 09:00 MHDA- 2007/04/17 09:00 CRDT- 2007/01/12 09:00 PHST- 2007/01/12 09:00 [pubmed] PHST- 2007/04/17 09:00 [medline] PHST- 2007/01/12 09:00 [entrez] AID - 2404506 [pii] AID - 10.1038/sj.leu.2404506 [doi] PST - ppublish SO - Leukemia. 2007 Mar;21(3):480-8. doi: 10.1038/sj.leu.2404506. Epub 2007 Jan 11.