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Giovanella L, D’Aurizio F, Petranović Ovčariček P, Görges R. Diagnostic, Theranostic and Prognostic Value of Thyroglobulin in Thyroid Cancer. J Clin Med 2024; 13:2463. [PMID: 38730992 PMCID: PMC11084486 DOI: 10.3390/jcm13092463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 04/12/2024] [Accepted: 04/21/2024] [Indexed: 05/13/2024] Open
Abstract
Thyroglobulin (Tg) is an iodinated glycoprotein, which is normally stored in the follicular colloid of the thyroid, being a substrate for thyroid hormone production. Since it is produced by well-differentiated thyroid cells, it is considered a reliable tumor marker for patients with differentiated thyroid carcinoma (DTC) during their follow-up after total thyroidectomy and radioiodine ablation. It is used to monitor residual disease and to detect recurrent disease. After total thyroid ablation, unstimulated highly sensitive Tg measurements are sufficiently accurate to avoid exogenous or endogenous thyrotropin (TSH) stimulation and provide accurate diagnostic and prognostic information in the great majority of DTC patients. Adopting sophisticated statistical analysis, i.e., decision tree models, the use of Tg before radioiodine theranostic administration was demonstrated to be useful in refining conventional, pathology-based risk stratification and providing personalized adjuvant or therapeutic radioiodine administrations. The follow-up of DTC patients aims to promptly identify patients with residual or recurrent disease following primary treatment. Our review paper covers the diagnostic, theranostic and prognostic value of thyroglobulin in DTC patients.
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Affiliation(s)
- Luca Giovanella
- Department of Nuclear Medicine, Gruppo Ospedaliero Moncucco SA, Clinica Moncucco, 6900 Lugano, Switzerland
- Clinic for Nuclear Medicine, University Hospital and University of Zurich, 8006 Zurich, Switzerland
| | - Federica D’Aurizio
- Institute of Clinical Pathology, Department of Laboratory Medicine, University Hospital of Udine, 33100 Udine, Italy;
| | - Petra Petranović Ovčariček
- Department of Oncology and Nuclear Medicine, University Hospital Center Sestre Milosrdnice, 10000 Zagreb, Croatia;
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Rainer Görges
- Clinic for Nuclear Medicine, University Hospital of Essen, 45147 Essen, Germany;
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Anderson H, Lim KH, Gull S, Oprean R, Spence K, Cvasciuc T. Predicting clinical outcomes of patients with serum thyroglobulin antibodies after thyroidectomy for differentiated thyroid cancer: a retrospective study from a UK regional center. Minerva Endocrinol (Torino) 2024; 49:60-68. [PMID: 37428110 DOI: 10.23736/s2724-6507.23.03939-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
BACKGROUND Twenty-twenty-five percent of patients with differentiated thyroid cancer (DTC) can have elevated thyroglobulin antibodies (TgAb). The study aimed to find any prognostic significance of elevated TgAb during follow-up. METHODS Ten-year retrospective study from a tertiary center including 79 patients with raised TgAb after total/staged thyroidectomy for DTC. We identified patients with stable (7.6%), increasing (15%) and decreasing levels of TgAb (77.2%); groups 1, 2 and 3 respectively. During follow-up we analyzed TgAb in subcategories by TgAb trend (>50% rise, <50% rise, >50% decline, <50% decline, positive to negative/normalization, negative to positive and stable levels), gender, age, surgery, autoimmune disease, histology, RAI uptake, distant metastases, and recurrence. RESULTS The incidence of raised TgAb levels was 33.2%, with female predominance. No connection was identified regarding other parameters. 11.4% had distant metastases. The highest mean maximum levels of TgAb was in group 2 (1918.75 IU/mL) and the lowest in group 3 (412.70 IU/mL). The recurrence rate changed significantly between the 3 groups: 50% in group 1, 75% in group 2, and 25% in group 3 (P=0.002). Recurrence rates decreased to 15% in the subcategory where TgAb became negative/normal from positive (P=0.0001). In patients with a negative to positive TgAb level trend or >50% rise, recurrence rates were 100% (P=0.041) and 70% (P=0.012) respectively. CONCLUSIONS Patients with increasing TgAb levels during follow-up have a higher rate of recurrence, distinctly for those with negative to positive trend and >50% rise in TgAb. These patients need closer follow-up, and TgAb may be used as a dynamic follow-up marker.
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Affiliation(s)
- Hannah Anderson
- Department of Endocrine Surgery, Royal Victoria Hospital, Belfast, UK -
| | - Kah H Lim
- Department of Endocrine Surgery, Royal Victoria Hospital, Belfast, UK
| | - Sadaf Gull
- Department of Endocrine Surgery, Royal Victoria Hospital, Belfast, UK
| | - Raluca Oprean
- Department of Endocrinology, Royal Victoria Hospital, Belfast, UK
| | - Kirsty Spence
- Endocrine Laboratory, Royal Victoria Hospital, Belfast, UK
| | - Titus Cvasciuc
- Department of Endocrine Surgery, Royal Victoria Hospital, Belfast, UK
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Sanjari M, Ordooei M, Amirkhosravi L, Naghibzadeh-Tahami A, Nazemi S. The effect of positive thyroglobulin antibodies on the prognosis and treatment response in patients with papillary thyroid carcinoma. Heliyon 2024; 10:e26092. [PMID: 38384522 PMCID: PMC10879018 DOI: 10.1016/j.heliyon.2024.e26092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 02/07/2024] [Accepted: 02/07/2024] [Indexed: 02/23/2024] Open
Abstract
Almost 15-30% of patients with papillary thyroid carcinoma (PTC) experience some degree of recurrence after treatment. Long-term follow-up and examination after thyroidectomy are very important in dealing with this issue. Serum thyroglobulin (Tg) level and neck ultrasound are the main part of follow-up for this purpose. The presence of thyroglobulin antibodies (TgAbs) leads to unreliable thyroglobulin (Tg) levels. The present study aims to evaluate the relationship between the simultaneous measurement of Tg and TgAb with long-term survival and response to treatment in these patients. This study was conducted by surveying available data from the medical records of 204 out of 600 patients over a 20-year period. In this research, 104 patients with positive TgAb were considered as the case group, and 100 patients with negative TgAb were selected as the control group. The relationship of TgAb titer was investigated with the staging, response to treatment (including the surgery number, number of radiotherapies, and dose of radioactive iodine), and recurrence in these patients. Also, the trend of TgAb changes was examined in the presence of high or low thyroglobulin levels during the follow-up period. Patients with high TgAb levels had more lymph node involvement, higher cumulative dose, a higher number of times received iodine, more surgical number, higher recurrence rate, and less excellent response (ER) to treatment during follow-ups. This effect of TgAb worsened in the presence of high Tg titer and remained up to 36 months. Overall, the baseline level of TgAb and its changes can be a suitable factor for predicting subsequent response to treatment and recurrence in patients with PTC. Accordingly, in cases with high TgAb and Tg levels, close follow-up should be considered up to Tg and TgAb normalization.
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Affiliation(s)
- Mojgan Sanjari
- Endocrinology and Metabolism Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Marzieh Ordooei
- Physiology Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Ladan Amirkhosravi
- Endocrinology and Metabolism Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Ahmad Naghibzadeh-Tahami
- Modeling in Health Research Center, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran
| | - Sarir Nazemi
- Department of Radiology, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
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Dekker BL, van der Horst-Schrivers ANA, Brouwers AH, Shuford CM, Kema IP, Muller Kobold AC, Links TP. Clinical irrelevance of lower titer thyroglobulin autoantibodies in patients with differentiated thyroid carcinoma. Eur Thyroid J 2022; 11:e220137. [PMID: 36169927 PMCID: PMC9641791 DOI: 10.1530/etj-22-0137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 09/28/2022] [Indexed: 11/08/2022] Open
Abstract
Objective Thyroglobulin (Tg) is an established tumor marker for differentiated thyroid carcinoma (DTC) patients. However, Tg immunoassays can be subject to Tg autoantibody (TgAb) interference resulting in incorrect Tg values. Therefore, Tg measurement with liquid chromatography-tandem mass spectrometry (LC-MS/MS) could be promising in patients with TgAbs. In this study, we compared Tg IRMA and Tg-LC-MS/MS analytically in the presence of TgAbs. Furthermore, we compared the clinical interpretation of results obtained by both Tg assays in DTC patients with lower TgAbs titers (<10 U/mL) during 131I ablation therapy. Methods Totally 118 DTC patients diagnosed between 2006 and 2014 in a University Medical Center were followed with the Tg-IRMA (Thermo Fischer Scientific) and ARCHITECT anti-Tg (Abbott Laboratories) assays. We re-analyzed their samples with a sensitive Tg-LC-MS/MS method (Labcorp, limit of quantification of 0.02 ng/mL). Passing-Bablok regression analysis was performed on samples obtained during 131I ablation therapy and follow-up. Results In 304 samples with lower TgAb titers, a good analytical agreement was found between both Tg assays (slope of 1.09 (95% CI: 1.05-1.16)). Fifty-five samples with potentially interfering TgAbs showed higher Tg-LC-MS/MS values than Tg-IRMA (slope of 1.45 (95% CI: 1.12->>100)). In patients(n = 91) with lower TgAb titers at the time of 131I ablation therapy, the Tg assays showed a clinical concordance of 91.2, 87.9, and 98.9%, respectively, using a Tg cut-off value of 1.0, 2.0, and 5.0 ng/mL. Conclusions In DTC patients with lower titer TgAbs, Tg-IRMA is still a reliable and useful tumor marker. In DTC patients with potentially interfering TgAbs, Tg-IRMA values decreased due to TgAb interference.
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Affiliation(s)
- Bernadette L Dekker
- Internal Medicine, Department of Endocrinology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Anouk N A van der Horst-Schrivers
- Internal Medicine, Department of Endocrinology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
- Department of Emergency Medicine, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Adrienne H Brouwers
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Christopher M Shuford
- Laboratory Corporation of America Holdings, Center for Esoteric Testing, Burlington, North California, USA
| | - Ido P Kema
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Anneke C Muller Kobold
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Thera P Links
- Internal Medicine, Department of Endocrinology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
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Thyroglobulin and thyroid cancer. Cancer Biomark 2022. [DOI: 10.1016/b978-0-12-824302-2.00006-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Guastapaglia L, Kasamatsu TS, Nakabashi CCD, Camacho CP, Maciel RMB, Vieira JGH, Biscolla RPM. The role of a new polyclonal competitive thyroglobulin assay in the follow-up of patients with differentiated thyroid cancer with structural disease but low levels of serum thyroglobulin by immunometric and LC-MS/MS methods. Endocrine 2021; 72:784-790. [PMID: 33222120 DOI: 10.1007/s12020-020-02526-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 10/13/2020] [Indexed: 10/22/2022]
Abstract
PURPOSE The aims of this study were to assess the role of an in-house competitive thyroglobulin assay (Tg-c) in the follow-up of metastatic differentiated thyroid carcinoma (DTC) patients who presented underestimated Tg measurements by immunometric assays (Tg-IMA) and to compare the results with IMA and LC-MS/MS Tg methods. METHODS This prospective study included 40 patients. Twenty-one with metastatic disease: 14 had Tg-IMA levels inappropriately low or undetectable (eight patients with positive and six with borderline TgAb) and seven had high Tg-IMA levels. Nineteen had an excellent response to therapy. The competitive assay employs a polyclonal antibody produced in rabbits immunized with human Tg, Tg labeled with biotin, and for the solid phase separation, a monoclonal anti-rabbit IgG antibody adsorbed to microtiter plates. RESULTS All 14 patients with structural disease and underestimated levels of Tg-IMA presented detectable Tg-c levels. The median Tg-c level in the group with positive TgAb was 183 µg/L (range: 22-710 µg/L), and 58 µg/L (range 23-148 µg/L) in the borderline TgAb group. The levels of Tg-LC-MS/MS were detectable in some patients (range < 0.5-18 µg/L). All seven patients with high Tg-IMA presented also high levels of Tg-c. Only 2/19 patients with excellent response had Tg-c levels above the functional sensitivity. CONCLUSIONS The competitive assay was able to detect Tg in all patients, even in the presence of serum TgAb, and may be an option in patients with underestimated Tg-IMA and relevant structural disease.
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Affiliation(s)
- Leila Guastapaglia
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Teresa S Kasamatsu
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Claudia Cristina D Nakabashi
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Fleury Medicina e Saúde, São Paulo, Brazil
| | - Cléber P Camacho
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Molecular Innovation and Biotechnology Laboratory, Medical Postgraduation Division, Universidade Nove de Julho (Uninove), São Paulo, Brazil
| | - Rui M B Maciel
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Fleury Medicina e Saúde, São Paulo, Brazil
| | - José Gilberto H Vieira
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Fleury Medicina e Saúde, São Paulo, Brazil
| | - Rosa Paula M Biscolla
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil.
- Fleury Medicina e Saúde, São Paulo, Brazil.
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Mukhtar N, Aljamei H, Aljomaiah A, Moria Y, Alzahrani AS. Natural Course of the American Thyroid Association Response to Therapy Statuses (Dynamic Risk Stratification) in Differentiated Thyroid Cancer. Eur Thyroid J 2021; 10:198-207. [PMID: 34178705 PMCID: PMC8216009 DOI: 10.1159/000511708] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 09/20/2020] [Indexed: 12/28/2022] Open
Abstract
UNLABELLED The concept of response to therapy in differentiated thyroid cancer (DTC) was introduced as a dynamic risk stratification used to assess the status of the disease at the time of the evaluation during the follow-up and the risk of recurrence in the future. Our aim in this study was to evaluate the natural course over time of different response to therapy statuses. METHODS We studied 501 nonselected DTC patients (102 males and 399 females) with a median age of 37 years (interquartile range [IQR] 29-48). All patients underwent near-total or total thyroidectomy followed by I-131 ablation (initial management). RESULTS Of the 501 patients, 387 patients (77.2%) did not have any additional therapuetic interventions after the initial management. In this group, the response to therapy status at the time of the first evaluation after I-131 (median 17 months, IQR 14-22) was an excellent response in 258 (66.7%), an indeterminate response in 101 (26.1%), biochemically incomplete in 17 (4.4%), and structurally incomplete in 11 patients (2.8%). The status changed spontaneously without any intervention in many of them. At the last follow-up visit (median duration 101 months, IQR 71-126), 357 patients (92.2%) achieved an excellent response, 4 (1%) an indeterminate response, 8 (2.1%) a biochemically incomplete status, 16 (4.1%) a structurally incomplete status, and 2 (0.5%) died secondary to DTC with a structurally incomplete status. The response to therapy in the other 114 patients who underwent additional interventions changed from before intervention to the last evaluation as follows: excellent response, 0 to 60 patients (52.6%), indeterminate response, 20 (17.5%) to 1 patient (0.9%), biochemically incomplete 25 (21.9%) to 10 patients (9%), and structurally incomplete 69 (60.5%) to 43 patients (37.7%). Overall, at the last evaluation, 417 (83.2%) were in an excellent response, 5 (1%) in an indeterminate response, 18 (3.6%) in a biochemically incomplete status, 50 (10.2%) in a structurally incomplete status, and 11 (2.2%) died secondary to DTC with a structurally incomplete status. CONCLUSIONS The response to therapy at the initial evaluation is predictive of the long-term outcome. Most patients with the indeterminate response and some in the biochemically incomplete statuses spontaneously regress to an excellent status. Mortality and progression of DTC occur mostly in the structurally incomplete status.
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Affiliation(s)
| | | | | | | | - Ali S. Alzahrani
- *Ali S. Alzahrani, MBC-46 (Department of Medicine), PO Box 3354, Riyadh 11211 (Saudi Arabia),
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Xing Z, Qiu Y, Li Z, Zhang L, Fei Y, Zhu J, Su A. Predictors of thyroglobulin in the lymph nodes recurrence of papillary thyroid carcinoma undergoing total thyroidectomy. BMC Surg 2021; 21:53. [PMID: 33482804 PMCID: PMC7821408 DOI: 10.1186/s12893-021-01063-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 01/14/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND To investigate the association between postoperative lymph nodes (LNs) recurrence and distinct serum thyroglobulin (Tg) levels in patients with papillary thyroid carcinoma (PTC). METHODS This study included PTC patients who underwent total thyroidectomy (TT) with at least central neck dissection and then re-operated due to recurrence of LNs between January 2013 and June 2018. These patients were grouped by negative or positive serum Tg levels according to the American Thyroid Association guidelines. RESULTS Of the 60 included patients, 49 underwent radioactive iodine (RAI) treatment. Maximum unstimulated Tg (uTg) ≥ 0.2 ng/mL were associated with larger diameter of recurrent LNs (P = 0.027), and higher rate of metastatic LNs (P < 0.001). Serum-stimulated Tg (off-Tg) ≥ 1 ng/mL (P = 0.047) and unstimulated Tg (on-Tg) ≥ 0.2 ng/Ml (P = 0.013) were associated with larger diameter of recurrent LNs. Number of metastatic LNs ≥ 8 was an independent predictor for postoperative maximum uTg ≥ 0.2 ng/mL (OR = 8.767; 95% CI = 1.392-55.216; P = 0.021). Ratio of metastatic LNs ≥ 25% was an independent predictor for off-Tg ≥ 1 ng/mL (OR = 20.997; 95% CI = 1.649-267.384; P = 0.019). CONCLUSION Postoperative Tg-positive status was associated with larger size of recurrent LNs. Number of metastatic LNs ≥ 8 and ratio of metastatic LNs ≥ 25% were independent predicators for uTg-positive and off-Tg-positive status, respectively.
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Affiliation(s)
- Zhichao Xing
- Center of Thyroid & Parathyroid Surgery, West China Hospital, Sichuan University, NO. 37 Guo Xue Xiang, Chengdu, Sichuan, People's Republic of China
| | - Yuxuan Qiu
- Center of Thyroid & Parathyroid Surgery, West China Hospital, Sichuan University, NO. 37 Guo Xue Xiang, Chengdu, Sichuan, People's Republic of China.,Department of Ultrasound, West China Hospital, Sichuan University, NO. 37 Guo Xue Xiang, Chengdu, China
| | - Zhe Li
- Center of Thyroid & Parathyroid Surgery, West China Hospital, Sichuan University, NO. 37 Guo Xue Xiang, Chengdu, Sichuan, People's Republic of China
| | - Lingyun Zhang
- Center of Thyroid & Parathyroid Surgery, West China Hospital, Sichuan University, NO. 37 Guo Xue Xiang, Chengdu, Sichuan, People's Republic of China
| | - Yuan Fei
- Center of Thyroid & Parathyroid Surgery, West China Hospital, Sichuan University, NO. 37 Guo Xue Xiang, Chengdu, Sichuan, People's Republic of China
| | - Jingqiang Zhu
- Center of Thyroid & Parathyroid Surgery, West China Hospital, Sichuan University, NO. 37 Guo Xue Xiang, Chengdu, Sichuan, People's Republic of China
| | - Anping Su
- Center of Thyroid & Parathyroid Surgery, West China Hospital, Sichuan University, NO. 37 Guo Xue Xiang, Chengdu, Sichuan, People's Republic of China.
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Rosário PW, Souza Côrtes MC. Re: "The De Novo Detection of Anti-Thyroglobulin Antibodies and Differentiated Thyroid Cancer Recurrence" by Yin et al. Thyroid 2020; 30:1685-1686. [PMID: 32458766 DOI: 10.1089/thy.2020.0302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Marina Carvalho Souza Côrtes
- Thyroid Department, Santa Casa de Belo Horizonte, Minas Gerais, Brazil
- Medicine Department, Universidade Federal de Juiz de Fora, Minas Gerais, Brazil
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Yin N, Sherman SI, Pak Y, Litofsky DR, Gianoukakis AG. Response to Rosário and Souza Côrtes re: "The De Novo Detection of Anti-Thyroglobulin Antibodies and Differentiated Thyroid Cancer Recurrence". Thyroid 2020; 30:1686-1687. [PMID: 32484055 DOI: 10.1089/thy.2020.0467] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Ngwe Yin
- Division of Endocrinology, Diabetes and Metabolism, Department of Internal Medicine, University of California, San Francisco (Fresno Medical Education Program), Fresno, California, USA
| | - Steven I Sherman
- Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Youngju Pak
- The Lundquist Institute, Torrance, California, USA
| | - Danielle R Litofsky
- Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Andrew G Gianoukakis
- The Lundquist Institute, Torrance, California, USA
- Division of Endocrinology, Diabetes and Metabolism, Harbor-UCLA Medical Center, Torrance, California, USA
- David Geffen School of Medicine at UCLA, Los Angeles, California, USA
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Scappaticcio L, Trimboli P, Verburg FA, Giovanella L. Significance of "de novo" appearance of thyroglobulin antibodies in patients with differentiated thyroid cancer. Int J Biol Markers 2020; 35:41-49. [PMID: 33073682 DOI: 10.1177/1724600820931517] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Clinical and laboratory guidelines recommend thyroglobulin antibodies (TgAbs) measurement with every thyroglobulin (Tg) measurement for the follow-up of differentiated thyroid cancer (DTC) patients. However, no evidence exists on the need for perpetual TgAbs testing in patients who are TgAb-negative at baseline. Our study was carried out to evaluate the prevalence, the dynamic changes, and the clinical significance of TgAbs that appeared de novo during the follow-up of DTC patients who were TgAb-negative at baseline. METHODS The data of DTC patients with negative pre-ablation TgAbs were reviewed retrospectively. The main characteristics of patients with both transient and sustained de novo TgAbs appearance were analyzed. DTC patients with persistently negative TgAbs served as controls. RESULTS Among 119 patients with pre-ablation negative TgAbs, 14 cases (11.7%) with de novo TgAbs appearance (10 and 4 patients with a transient and sustained de novo TgAbs appearance, respectively) were detected. No differences in disease-free survival were observed in patients with de novo TgAbs appearance compared to controls. The TgAbs peak value was higher in patients with sustained de novo appearance compared to patients with transient de novo. Two of 14 patients with de novo TgAbs developed structural disease with concurrently detectable Tg in both cases. CONCLUSIONS Transient de novo TgAbs appearance is not infrequent during DTC patients' follow-up, and it has no apparent clinical impact. Sustained de novo TgAbs appearance is rare and may predict structural recurrences; however, similar disease-free survival was observed in patients with sustained de novo TgAbs and TgAb-negative DTC patients.
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Affiliation(s)
- Lorenzo Scappaticcio
- Unit of Endocrinology and Metabolic Diseases, University of Campania "L. Vanvitelli," Naples, Italy.,Clinic for Nuclear Medicine and Competence Centre for Thyroid Disease, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
| | - Pierpaolo Trimboli
- Clinic for Nuclear Medicine and Competence Centre for Thyroid Disease, Ente Ospedaliero Cantonale, Bellinzona, Switzerland.,Faculty of Biomedical Sciences, Università della Svizzera Italiana (USI), Lugano (Switzerland)
| | - Frederik A Verburg
- Department of Nuclear Medicine, University Hospital Marburg, Marburg, Germany
| | - Luca Giovanella
- Clinic for Nuclear Medicine and Competence Centre for Thyroid Disease, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
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Prognostic Significance of Thyroglobulin Antibodies in Differentiated Thyroid Cancer. J Thyroid Res 2020; 2020:8312628. [PMID: 32351680 PMCID: PMC7178500 DOI: 10.1155/2020/8312628] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 02/12/2020] [Accepted: 02/27/2020] [Indexed: 01/24/2023] Open
Abstract
Objective To investigate whether variations in thyroglobulin autoantibodies (TgAb) are related to the recurrence or persistence of differentiated thyroid carcinoma (DTC) and may therefore be useful as surrogate tumor markers. Design and Methods. We retrospectively studied 98 subjects (83 women, 47 ± 15 years old) from an initial cohort of 1017 patients treated for DTC in five hospitals, with positive TgAb at any time during the follow-up. Patients presented five different patterns of evolution of serum TgAb concentrations: (1) stable positive TgAb, (2) de novo appearance, (3) an increase of more than 50%, (4) TgAb levels from positive to negative, and (5) a decrease of more than 50%. Results In the group of 11 patients with stable TgAb, four cases presented persistence of the disease with structural incomplete response. In the group of 22 patients with sustained increasing trend rising more than 50% or de novo detectable TgAb levels, three patients were diagnosed with structural incomplete response. There was no evidence of recurrence or persistence of the disease in any of the 65 patients who showed a significant decrease in (n = 35) or disappearance of (n = 30) TgAb. Conclusions Our results suggest that not only the appearance of a significant increase in TgAb but also stable concentrations of TgAb should be regarded as a sufficient risk condition for an active search for recurrent or persistent disease. Conversely, a significant decrease in TgAb levels can represent a good prognostic sign.
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Zavala LF, Barra MI, Olmos R, Tuttle M, González H, Droppelmann N, Mosso L, Domínguez JM. In properly selected patients with differentiated thyroid cancer, antithyroglobulin antibodies decline after thyroidectomy and their sole presence should not be an indication for radioiodine ablation. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2019; 63:293-299. [PMID: 31038590 PMCID: PMC10522203 DOI: 10.20945/2359-3997000000123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 02/17/2019] [Indexed: 11/23/2022]
Abstract
OBJECTIVE Our objective was to evaluate the trend of antithyroglobulin antibodies (TgAb) during follow-up of patients with differentiated thyroid cancer (DTC) treated without RAI, as well as their role in the risk of recurrence. SUBJECTS AND METHODS This was a prospective, descriptive study. A total of 152 consecutive patients with DTC treated in a single institution undergoing total thyroidectomy without RAI and followed for a median of 2.3 years (0.5-10.3) were divided in two groups: TgAb(-) (n = 111) and TgAb(+) (n = 41). Patients were classified according to AJCC 7th and 8th editions, as well as to their risk of recurrence and response to treatment categories. RESULTS Both groups, TgAb(-) and TgAb(+), were similar regarding patient and tumor characteristics. At the end of follow-up, 90 (59.2%), 57 (37.5%), 3 (2%) and 2 (1.3%) patients achieved excellent, indeterminate, biochemically incomplete and structurally incomplete response, respectively. The risk of structural recurrence was similar in both groups (TgAb[-] 0.9% vs. TgAb[+] 2.4%, p = 0.46). In the TgAb(+) group, TgAb became negative in 10 (24.4%), decreased ≥ 50% without negativization in 25 (60.9%), decreased < 50% in 4 (9.8%) and remained stable or increased in 2 (4.9%) cases. The only incomplete structural response had increasing TgAb during follow-up. CONCLUSIONS In properly selected patients with DTC, TgAb concentration immediately after total thyroidectomy should not mandate RAI ablation, and their trend during follow-up may impact the risk of recurrence.
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Affiliation(s)
- Luis Felipe Zavala
- Departments of Endocrinology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - María Inés Barra
- Departments of Endocrinology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Roberto Olmos
- Departments of Endocrinology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Michael Tuttle
- Department of Endocrinology Service, Memorial Sloan-Kettering Cancer Center, New York, New YorkUnited States
| | - Hernán González
- Head and Neck Surgery, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Nicolás Droppelmann
- Head and Neck Surgery, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Lorena Mosso
- Departments of Endocrinology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - José M Domínguez
- Departments of Endocrinology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
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Dekker BL, van der Horst-Schrivers ANA, Sluiter WJ, Brouwers AH, Lentjes EGWM, Heijboer AC, Muller Kobold AC, Links TP. Clinical Applicability of Low Levels of Thyroglobulin Autoantibodies as Cutoff Point for Thyroglobulin Autoantibody Positivity. Thyroid 2019; 29:71-78. [PMID: 30351209 DOI: 10.1089/thy.2018.0195] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND Thyroglobulin (Tg) is an established tumor marker in differentiated thyroid carcinoma (DTC). However, Tg assays can be subject to interference by autoantibodies against Tg (TgAbs). No clinical consensus exists on the cutoff value of TgAb positivity and its relationship to Tg assay interference. The aims of this study were to investigate the most applicable cutoff value for TgAb positivity in clinical practice and to evaluate whether tumor characteristics differ between TgAb+ and TgAb- patients during ablation therapy using the manufacturer's cutoff (MCO) and institutional cutoff (ICO). METHODS This single-center cohort study included 230 DTC patients diagnosed between January 2006 and December 2014. Serum Tg and TgAbs were measured with the Tg-IRMA (Thermo Fisher Scientific) and ARCHITECT Anti-Tg (Abbott Laboratories) assays. Patients were divided into TgAb- and TgAb+ based on the limit of detection (LoD; ≥0.07 IU/mL), functional sensitivity (FS; ≥0.31 IU/mL), MCO (≥4.11 IU/mL), and ICO (≥10 IU/mL). RESULTS All patients were TgAb+ based on the LoD; one patient was negative on FS. Fifty-five (23.9%) and 34 (14.8%) patients had TgAbs above the MCO and ICO, respectively. Histology, presence of multifocality, tumor-node-metastasis, and American Thyroid Assocation risk stratification did not differ between TgAb- and TgAb+ patients using MCO and ICO during ablation. CONCLUSIONS This study supports the use of a higher cutoff value than that of the FS for TgAb positivity in clinical settings. The LoD and FS are too sensitive to discriminate TgAb positivity and negativity in DTC patients during ablation therapy. The presence of TgAbs during ablation is not related to tumor characteristics and risk profile. This implies that TgAb positivity should not be considered a separate risk factor.
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Affiliation(s)
- Bernadette L Dekker
- 1 Department of Endocrinology and University of Groningen, Groningen, The Netherlands
| | | | - Wim J Sluiter
- 1 Department of Endocrinology and University of Groningen, Groningen, The Netherlands
| | - Adrienne H Brouwers
- 2 Department of Nuclear Medicine and Molecular Imaging; University of Groningen, Groningen, The Netherlands
| | - Eef G W M Lentjes
- 3 Department of Clinical Chemistry and Hematology, Laboratory of Endocrinology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Annemieke C Heijboer
- 4 Department of Clinical Chemistry, Endocrine Laboratory, VU University Medical Center, VU University, Amsterdam, The Netherlands
| | - Anneke C Muller Kobold
- 5 Department of Laboratory Medicine; University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Thera P Links
- 1 Department of Endocrinology and University of Groningen, Groningen, The Netherlands
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15
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Rosario PW. Re: "A Follow-Up Strategy for Patients with Excellent Response to Initial Therapy for Differentiated Thyroid Carcinoma" by Jeon et al. (Thyroid 2018;28:187-192). Thyroid 2018; 28:547-548. [PMID: 29583109 DOI: 10.1089/thy.2017.0644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Pedro Weslley Rosario
- Instituto de Ensino e Pesquisa da Santa Casa de Belo Horizonte , Belo Horizonte, Brazil
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