PMID- 21042730 OWN - NLM STAT- MEDLINE DCOM- 20110224 LR - 20191210 IS - 1791-2423 (Electronic) IS - 1019-6439 (Linking) VI - 37 IP - 6 DP - 2010 Dec TI - FcgammaR polymorphisms and clinical outcome in colorectal cancer patients receiving passive or active antibody treatment. PG - 1599-606 AB - Fcgamma receptors (FcgammaRs) on effector cells are of importance for mediating antibody-dependent cellular cytotoxicity (ADCC). FcgammaRIIIa158valine (V)/phenylalanine (F) and FcgammaRIIa131histidine (H)/arginine(R) polymorphisms have been shown to relate to prognosis in antibody-treated patients. The aim of the present study was to analyze the polymorphisms of both FcgammaRIIIa and FcgammaRIIa in colorectal carcinoma (CRC) patients receiving either passively administered monoclonal antibodies (MAbs) or antibodies induced by carcinoembryonic antigen (CEA) vaccination. One hundred and thirty CRC patients were included. Thirty-eight patients received adjuvant treatment with an anti-EpCAM monoclonal antibody (edrecolomab) (n=17) or rCEA vaccination therapeutic cancer vaccine (TCV) (n=21) inducing anti-CEA IgG antibodies. Ninety-two patients had metastatic disease and received anti-EpCAM MAb based therapies. FcgammaR genotypes were analysed using genomic DNA and PCR. ADCC was tested in a standard 18 h Cr51 release assay. In all adjuvant-treated patients, FcgammaRIIIa158V carriers (V/V and V/F) had a significantly better overall survival compared to F/F homozygous patients (p<0.05), FcgammaRIIa R carriers vs. H/H (p=0.05) as well as V and R carriers combined compared to the others (p<0.05). Similar findings were obtained when antibody and TCV-treated patients were analysed separately. No impact on the prognosis of FcgammaR polymorphisms was noted in advanced disease. FcgammaRIIIa V carriers had a significantly higher ADCC activity compared to F/F patients (p=0.001). Our model study might support the notion that FcgammaRIIIa V carriers as well as FcgammaRIIa R carriers receiving adjuvant, passively or actively (TCV)-induced antibody treatment might have a better prognosis than the others. Prospective extended clinical trials are warranted to study the predictive/prognostic impact of FcgammaR polymorphisms in antibody-treated patients and might be a valuable biomarker to optimize antibody-based treatment strategies. FAU - Wang, Biyun AU - Wang B AD - Immune and Gene Therapy Laboratory, Cancer Centre Karolinska, Department of Oncology-Pathology, Karolinska Institutet, SE-171 76 Stockholm, Sweden. FAU - Kokhaei, Parviz AU - Kokhaei P FAU - Mellstedt, Hakan AU - Mellstedt H FAU - Liljefors, Maria AU - Liljefors M LA - eng PT - Evaluation Study PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't PL - Greece TA - Int J Oncol JT - International journal of oncology JID - 9306042 RN - 0 (Antibodies) RN - 0 (Carcinoembryonic Antigen) RN - 0 (Receptors, IgG) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Antibodies/*therapeutic use MH - Carcinoembryonic Antigen/immunology MH - Carcinoma/*diagnosis/genetics/immunology/pathology/*therapy MH - Colorectal Neoplasms/*diagnosis/genetics/immunology/pathology/*therapy MH - Female MH - Humans MH - Immunization, Passive/methods MH - Immunotherapy, Active/methods MH - Male MH - Middle Aged MH - *Polymorphism, Single Nucleotide/physiology MH - Prognosis MH - Receptors, IgG/*genetics/metabolism MH - Treatment Outcome MH - Young Adult EDAT- 2010/11/03 06:00 MHDA- 2011/02/25 06:00 CRDT- 2010/11/03 06:00 PHST- 2010/11/03 06:00 [entrez] PHST- 2010/11/03 06:00 [pubmed] PHST- 2011/02/25 06:00 [medline] AID - 10.3892/ijo_00000814 [doi] PST - ppublish SO - Int J Oncol. 2010 Dec;37(6):1599-606. doi: 10.3892/ijo_00000814.