C1Q Assay Results in Complement-Dependent Cytotoxicity Crossmatch Negative Renal Transplant Candidates with Donor-Specific Antibodies: High Specificity but Low Sensitivity When Predicting Flow Crossmatch
The aim of the present study was to describe the association of positive flow cross match (FXM) and C1q-SAB. Methods. In this observational, cross-sectional, and comparative study, patients included had negative AHG-CDC-XM and donor specific antibodies (DSA) and were tested with FXM. All pretranspla...
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Wiley
2016-01-01
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| Series: | Journal of Transplantation |
| Online Access: | http://dx.doi.org/10.1155/2016/2106028 |
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| author | José M. Arreola-Guerra Natalia Castelán Adrián de Santiago Adriana Arvizu Norma Gonzalez-Tableros Mayra López Isaac Salcedo Mario Vilatobá Julio Granados Luis E. Morales-Buenrostro Josefina Alberú |
| author_facet | José M. Arreola-Guerra Natalia Castelán Adrián de Santiago Adriana Arvizu Norma Gonzalez-Tableros Mayra López Isaac Salcedo Mario Vilatobá Julio Granados Luis E. Morales-Buenrostro Josefina Alberú |
| author_sort | José M. Arreola-Guerra |
| collection | DOAJ |
| description | The aim of the present study was to describe the association of positive flow cross match (FXM) and C1q-SAB. Methods. In this observational, cross-sectional, and comparative study, patients included had negative AHG-CDC-XM and donor specific antibodies (DSA) and were tested with FXM. All pretransplant sera were tested with C1q-SAB assay. Results. A total of 50 donor/recipient evaluations were conducted; half of them had at least one C1q+ Ab (n=26, 52%). Ten patients (20.0%) had DSA C1q+ Ab. Twenty-five (50%) FXMs were positive. Factors associated with a positive FXM were the presence of C1q+ Ab (DSA C1q+ Ab: OR 27, 2.80–259.56, P=0.004, and no DSA C1q+ Ab: OR 5, 1.27–19.68, P=0.021) and the DSA LABScreen-SAB MFI (OR 1.26, 95% CI 1.06–1.49, P=0.007). The cutoff point of immunodominant LABScreen SAB DSA-MFI with the greatest sensitivity and specificity to predict FXM was 2,300 (sensitivity: 72% and specificity: 75%). For FXM prediction, DSA C1q+ Ab was the most specific (95.8%, 85–100) and the combination of DSA-MFI > 2,300 and C1q+ Ab was the most sensitive (92.0%, 79.3–100). Conclusions. C1q+ Ab and LABScreen SAB DSA-MFI were significantly associated with FXM. DSA C1q+ Ab was highly specific but with low sensitivity. |
| format | Article |
| id | doaj-art-60cd63e1dd9745b1a705787adf6398ee |
| institution | OA Journals |
| issn | 2090-0007 2090-0015 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Transplantation |
| spelling | doaj-art-60cd63e1dd9745b1a705787adf6398ee2025-08-20T02:35:18ZengWileyJournal of Transplantation2090-00072090-00152016-01-01201610.1155/2016/21060282106028C1Q Assay Results in Complement-Dependent Cytotoxicity Crossmatch Negative Renal Transplant Candidates with Donor-Specific Antibodies: High Specificity but Low Sensitivity When Predicting Flow CrossmatchJosé M. Arreola-Guerra0Natalia Castelán1Adrián de Santiago2Adriana Arvizu3Norma Gonzalez-Tableros4Mayra López5Isaac Salcedo6Mario Vilatobá7Julio Granados8Luis E. Morales-Buenrostro9Josefina Alberú10Department of Transplantation, National Institute of Medical Sciences and Nutrition Salvador Zubirán, Vasco de Quiroga 15, Colonia Belisario Domínguez, Sección XVI, Tlalpan, 14080 Mexico City, MexicoHistocompatibility Laboratory, National Institute of Medical Sciences and Nutrition Salvador Zubirán, Vasco de Quiroga 15, Colonia Belisario Domínguez, Sección XVI, Tlalpan, 14080 Mexico City, MexicoHistocompatibility Laboratory, National Institute of Medical Sciences and Nutrition Salvador Zubirán, Vasco de Quiroga 15, Colonia Belisario Domínguez, Sección XVI, Tlalpan, 14080 Mexico City, MexicoHistocompatibility Laboratory, National Institute of Medical Sciences and Nutrition Salvador Zubirán, Vasco de Quiroga 15, Colonia Belisario Domínguez, Sección XVI, Tlalpan, 14080 Mexico City, MexicoHistocompatibility Laboratory, National Institute of Medical Sciences and Nutrition Salvador Zubirán, Vasco de Quiroga 15, Colonia Belisario Domínguez, Sección XVI, Tlalpan, 14080 Mexico City, MexicoHistocompatibility Laboratory, National Institute of Medical Sciences and Nutrition Salvador Zubirán, Vasco de Quiroga 15, Colonia Belisario Domínguez, Sección XVI, Tlalpan, 14080 Mexico City, MexicoHistocompatibility Laboratory, National Institute of Medical Sciences and Nutrition Salvador Zubirán, Vasco de Quiroga 15, Colonia Belisario Domínguez, Sección XVI, Tlalpan, 14080 Mexico City, MexicoDepartment of Transplantation, National Institute of Medical Sciences and Nutrition Salvador Zubirán, Vasco de Quiroga 15, Colonia Belisario Domínguez, Sección XVI, Tlalpan, 14080 Mexico City, MexicoDepartment of Transplantation, National Institute of Medical Sciences and Nutrition Salvador Zubirán, Vasco de Quiroga 15, Colonia Belisario Domínguez, Sección XVI, Tlalpan, 14080 Mexico City, MexicoDepartment of Nephrology-Mineral Metabolism, National Institute of Medical Sciences and Nutrition Salvador Zubirán, Vasco de Quiroga 15, Colonia Belisario Domínguez, Sección XVI, Tlalpan, 14080 Mexico City, MexicoDepartment of Transplantation, National Institute of Medical Sciences and Nutrition Salvador Zubirán, Vasco de Quiroga 15, Colonia Belisario Domínguez, Sección XVI, Tlalpan, 14080 Mexico City, MexicoThe aim of the present study was to describe the association of positive flow cross match (FXM) and C1q-SAB. Methods. In this observational, cross-sectional, and comparative study, patients included had negative AHG-CDC-XM and donor specific antibodies (DSA) and were tested with FXM. All pretransplant sera were tested with C1q-SAB assay. Results. A total of 50 donor/recipient evaluations were conducted; half of them had at least one C1q+ Ab (n=26, 52%). Ten patients (20.0%) had DSA C1q+ Ab. Twenty-five (50%) FXMs were positive. Factors associated with a positive FXM were the presence of C1q+ Ab (DSA C1q+ Ab: OR 27, 2.80–259.56, P=0.004, and no DSA C1q+ Ab: OR 5, 1.27–19.68, P=0.021) and the DSA LABScreen-SAB MFI (OR 1.26, 95% CI 1.06–1.49, P=0.007). The cutoff point of immunodominant LABScreen SAB DSA-MFI with the greatest sensitivity and specificity to predict FXM was 2,300 (sensitivity: 72% and specificity: 75%). For FXM prediction, DSA C1q+ Ab was the most specific (95.8%, 85–100) and the combination of DSA-MFI > 2,300 and C1q+ Ab was the most sensitive (92.0%, 79.3–100). Conclusions. C1q+ Ab and LABScreen SAB DSA-MFI were significantly associated with FXM. DSA C1q+ Ab was highly specific but with low sensitivity.http://dx.doi.org/10.1155/2016/2106028 |
| spellingShingle | José M. Arreola-Guerra Natalia Castelán Adrián de Santiago Adriana Arvizu Norma Gonzalez-Tableros Mayra López Isaac Salcedo Mario Vilatobá Julio Granados Luis E. Morales-Buenrostro Josefina Alberú C1Q Assay Results in Complement-Dependent Cytotoxicity Crossmatch Negative Renal Transplant Candidates with Donor-Specific Antibodies: High Specificity but Low Sensitivity When Predicting Flow Crossmatch Journal of Transplantation |
| title | C1Q Assay Results in Complement-Dependent Cytotoxicity Crossmatch Negative Renal Transplant Candidates with Donor-Specific Antibodies: High Specificity but Low Sensitivity When Predicting Flow Crossmatch |
| title_full | C1Q Assay Results in Complement-Dependent Cytotoxicity Crossmatch Negative Renal Transplant Candidates with Donor-Specific Antibodies: High Specificity but Low Sensitivity When Predicting Flow Crossmatch |
| title_fullStr | C1Q Assay Results in Complement-Dependent Cytotoxicity Crossmatch Negative Renal Transplant Candidates with Donor-Specific Antibodies: High Specificity but Low Sensitivity When Predicting Flow Crossmatch |
| title_full_unstemmed | C1Q Assay Results in Complement-Dependent Cytotoxicity Crossmatch Negative Renal Transplant Candidates with Donor-Specific Antibodies: High Specificity but Low Sensitivity When Predicting Flow Crossmatch |
| title_short | C1Q Assay Results in Complement-Dependent Cytotoxicity Crossmatch Negative Renal Transplant Candidates with Donor-Specific Antibodies: High Specificity but Low Sensitivity When Predicting Flow Crossmatch |
| title_sort | c1q assay results in complement dependent cytotoxicity crossmatch negative renal transplant candidates with donor specific antibodies high specificity but low sensitivity when predicting flow crossmatch |
| url | http://dx.doi.org/10.1155/2016/2106028 |
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