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Yang G, Williams R, Wang L, Farhadfar N, Chen Y, Loiacono AT, Bian J, Holliday LS, Katz J, Gong Y. Medication-Related Osteonecrosis of the Jaw in Cancer Patients: Result from the OneFlorida Clinical Research Consortium. J Bone Miner Res 2022; 37:2466-2471. [PMID: 36151778 PMCID: PMC9772085 DOI: 10.1002/jbmr.4708] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/12/2022] [Accepted: 09/17/2022] [Indexed: 01/22/2023]
Abstract
Medication-related osteonecrosis of the jaw (MRONJ) is a rare but severely debilitating drug-induced bone disorder in the jawbone region. The first MRONJ was reported in 2003 after bisphosphonate (BP) exposure. Recently, other drugs, such as receptor activator of NF-κB ligand (RANKL) inhibitor denosumab and antiangiogenic agents, were also associated with MRONJ. The purpose of this study was to evaluate the incidence and risk factors for MRONJ related to BPs or denosumab in cancer patients in real-world clinical settings using data from the OneFlorida Clinical Research Consortium. We queried the electronic health records of participants with prescriptions of intravenous (IV) BPs or denosumab between January 1, 2012, and September 1, 2021, in the OneFlorida Consortium. Time to MRONJ diagnosis was evaluated using the Kaplan-Meier method, and Cox regression analysis was performed to estimate the adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) for MRONJ. A total of 5689 participants had one or more prescriptions of IV BP or denosumab within this study period and were included in this study. Among these participants, 52 (0.9%) had a diagnosis of MRONJ. The overall rate of MRONJ was 0.73%, 0.86%, and 3.50% in the cancer patients treated with IV BPs, denosumab, and sequential IV BPs and denosumab, respectively. The risk of MRONJ was similar in participants treated with denosumab alone compared to those treated with IV BPs alone (HR: 1.25, 95% CI: 0.66-2.34, p = .49). Patients with sequential prescription of IV BP and denosumab were at much higher risk for MRONJ, with an adjusted HR of 4.49, 95% CI of 1.96-10.28, p = .0004. In conclusion, in real-world clinical settings, the rates of MRONJ associated with IV BPs and denosumab were similar, while the sequential treatment of these two drug classes was associated with a much higher risk of MRONJ. © 2022 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Guang Yang
- Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics and Precision Medicine, College of Pharmacy, University of Florida, Gainesville, FL, USA
- Department of Pharmacology, Northwestern University, Chicago IL, USA
| | - Roy Williams
- Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics and Precision Medicine, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Lishu Wang
- Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics and Precision Medicine, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Nosha Farhadfar
- Division of Hematology/Oncology, University of Florida College of Medicine, Gainesville FL, USA
| | - Yiqing Chen
- Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics and Precision Medicine, College of Pharmacy, University of Florida, Gainesville, FL, USA
- Department of Biostatistics and Data Science, School of Public Health, University of Texas Health Science Center in Houston
| | - Alexander T. Loiacono
- Department of Health Outcomes & Biomedical Informatics, College of Medicine, University of Florida, Gainesville FL, USA
| | - Jiang Bian
- Department of Health Outcomes & Biomedical Informatics, College of Medicine, University of Florida, Gainesville FL, USA
| | - L. Shannon Holliday
- Department of Orthodontics, College of Dentistry, University of Florida, Gainesville, Florida, USA
| | - Joseph Katz
- Department of Oral Medicine, College of Dentistry, University of Florida, Gainesville FL, USA
| | - Yan Gong
- Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics and Precision Medicine, College of Pharmacy, University of Florida, Gainesville, FL, USA
- University of Florida Health Cancer Center, University of Florida, Gainesville FL, USA
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Osteonecrosis of the jaw among cancer patients in Denmark: risk and prognosis. Int J Oral Maxillofac Surg 2022; 51:1424-1430. [DOI: 10.1016/j.ijom.2022.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 12/23/2021] [Accepted: 02/21/2022] [Indexed: 11/23/2022]
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Ehrenstein V, Heide-Jørgensen U, Schiødt M, Akre O, Herlofson BB, Hansen S, Larsson Wexell C, Nørholt SE, Tretli S, Kjellman A, Glennane A, Lowe KA, Sørensen HT. Osteonecrosis of the jaw among patients with cancer treated with denosumab or zoledronic acid: Results of a regulator-mandated cohort postauthorization safety study in Denmark, Norway, and Sweden. Cancer 2021; 127:4050-4058. [PMID: 34310704 DOI: 10.1002/cncr.33802] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 06/02/2021] [Accepted: 06/14/2021] [Indexed: 11/12/2022]
Abstract
BACKGROUND Osteonecrosis of the jaw (ONJ) is an adverse effect of antiresorptive treatment. This study estimated incidence proportions and incidence rates of ONJ in cancer patients with bone metastases from solid tumors treated for the prevention of skeletal-related events in routine clinical practice. METHODS This cohort study in Denmark, Norway, and Sweden in 2011-2018 included 3 treatment cohorts: a denosumab inception cohort (DEIC), a zoledronic acid inception cohort (ZAIC), and a denosumab-switch cohort (DESC). The authors estimated 1- to 5-year incidence proportions and incidence rates of ONJ overall, by cancer site (breast, prostate, or other solid tumor), and by country. ONJ diagnoses were confirmed by adjudication. RESULTS There were 1340 patients in the DEIC, 1352 in the ZAIC, and 408 in the DESC. The median ages of the 3 cohorts were 70, 69, and 70 years, respectively; the proportions of men were 72.6%, 53.8%, and 48.3%, respectively; and the median follow-up was 19.8, 12.9, and 13.3 months, respectively. The 5-year incidence proportions of ONJ were 5.7% (95% confidence interval [CI], 4.4%-7.3%) in the DEIC, 1.4% (95% CI, 0.8%-2.3%) in the ZAIC, and 6.6% (95% CI, 4.2%-10.0%) in the DESC. The corresponding ONJ incidence rates per 100 person-years were 3.0 (95% CI, 2.3-3.7), 1.0 (95% CI, 0.6-1.5), and 4.3 (95% CI, 2.8-6.3). Incidence proportions and incidence rates were highest in patients with prostate cancer and in Denmark. CONCLUSIONS This study provides estimates of the risk of medically confirmed ONJ among patients initiating denosumab or zoledronic acid in routine clinical practice in 3 Scandinavian countries. The results varied by cancer site and by country. LAY SUMMARY Denosumab and zoledronic acid reduce the risk of bone fractures, pain, and surgery in patients with advanced cancers involving bone. Osteonecrosis of the jaw (ONJ)-death of a jawbone-is a known side effect of treatment with denosumab or zoledronic acid. The authors examined almost 2900 denosumab- or zoledronic acid-treated patients with cancer in Denmark, Norway, and Sweden. Over the course of 5 years, ONJ developed in 5.7% of the patients whose initial treatment was denosumab, in 1.4% of the patients whose initial treatment was zoledronic acid, and in 6.6% of the patients who switched from zoledronic acid to denosumab.
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Affiliation(s)
- Vera Ehrenstein
- Department of Clinical Epidemiology, Aarhus University Hospital, Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Uffe Heide-Jørgensen
- Department of Clinical Epidemiology, Aarhus University Hospital, Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Morten Schiødt
- Department of Oral and Maxillofacial Surgery, Rigshospitalet, Copenhagen, Denmark
| | - Olof Akre
- Urology Department, Karolinska University Hospital, Stockholm, Sweden
| | - Bente Brokstad Herlofson
- Department of Oral Surgery and Oral Medicine, Faculty of Dentistry, University of Oslo, Oslo, Norway.,Division for Head, Neck and Reconstructive Surgery, Department of Otorhinolaryngology-Head and Neck Surgery, Oslo University Hospital, Oslo, Norway
| | - Svein Hansen
- Department of Research, Cancer Registry of Norway, Oslo, Norway
| | - Cecilia Larsson Wexell
- Department of Oral and Maxillofacial Surgery, Skåne University Hospital, Lund, Sweden.,Department of Biomaterials, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
| | - Sven Erik Nørholt
- Department of Oral and Maxillofacial Surgery, Aarhus University Hospital, Aarhus, Denmark.,Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Steinar Tretli
- Department of Research, Cancer Registry of Norway, Oslo, Norway
| | - Anders Kjellman
- Urology Department, Karolinska University Hospital, Stockholm, Sweden
| | | | - Kimberly A Lowe
- Center for Observational Research, Amgen, Inc, Thousand Oaks, California
| | - Henrik T Sørensen
- Department of Clinical Epidemiology, Aarhus University Hospital, Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
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Park JH, Kwoen MJ, Lee JR, Kim KS, Lee HJ, Kim JW, Lee H. Gradual, but Not Sudden, Dose-Dependent Increase of ONJ Risk With Bisphosphonate Exposure: A Nationwide Cohort Study in Women With Osteoporosis. Front Endocrinol (Lausanne) 2021; 12:774820. [PMID: 34956086 PMCID: PMC8695600 DOI: 10.3389/fendo.2021.774820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 11/18/2021] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND A causal relationship of bisphosphonate (BP) exposure with osteonecrosis of the jaw (ONJ) has been reported; however, a definite dose-dependent risk remains to be elucidated beyond current vague recommendations of 4-year oral BP for ONJ risk increase. OBJECTIVE To identify the effect of bisphosphonate cumulative dose on ONJ development in women with osteoporosis. METHODS A retrospective cohort study was designed using the National Health Insurance Service-National Health Screening database of Korea. Females over the age of 50 were diagnosed with osteoporosis based on the International Classification of Diseases 10th revision (ICD-10) codes (M80, M81, and M82) with bisphosphonate prescriptions. The cumulative dose of bisphosphonate was calculated using defined daily doses (DDD) to provide an accurate BP cumulative effect on ONJ occurrence. Osteonecrosis of the jaw was identified using both ICD-10 codes and related procedure codes. The incidence rates of ONJ and hazard ratios were estimated according to the bisphosphonate cumulative dose. RESULTS Among 74,491 included subjects, 190 cases of ONJ were identified. The incidence rate substantially increased after BP cumulative dose over 1 year (25.75 for DDD < 365, which increased to 53.43 for 365 ≤ DDD < 730). Compared to subjects with a cumulative dose of DDD < 365, subjects with a cumulative dose of 365 ≤ DDD < 730 had 2.36-fold hazard for developing ONJ (p < 0.001). CONCLUSION A bisphosphonate cumulative dose of more than 1 year had an increased risk of ONJ development. A gradual, but not sudden, dose-dependent increase in ONJ risk with BP exposure needs to be considered in providing the optimal BP treatment duration.
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Affiliation(s)
- Jung-Hyun Park
- Department of Oral and Maxillofacial Surgery, Research Institute for Intractable Osteonecrosis of the Jaw, College of Medicine, Ewha Womans University, Seoul, South Korea
| | - Min-Jeong Kwoen
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Jae-Ryun Lee
- Department of Family Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Keun-Suh Kim
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Hyo-Jung Lee
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Jin-Woo Kim
- Department of Oral and Maxillofacial Surgery, Research Institute for Intractable Osteonecrosis of the Jaw, College of Medicine, Ewha Womans University, Seoul, South Korea
- *Correspondence: Hyejin Lee, ; Jin-Woo Kim, ;
| | - Hyejin Lee
- Department of Family Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
- *Correspondence: Hyejin Lee, ; Jin-Woo Kim, ;
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Dima A, Pedersen AB, Pedersen L, Baicus C, Thomsen RW. Association of common comorbidities with osteonecrosis: a nationwide population-based case-control study in Denmark. BMJ Open 2018; 8:e020680. [PMID: 29439082 PMCID: PMC5829903 DOI: 10.1136/bmjopen-2017-020680] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE To examine recent time trends in the incidence of osteonecrosis (ON) in Denmark and to investigate different common comorbidities association with ON in a population-based setting. METHODS Using Danish medical databases, we included all patients with a first-time hospital diagnosis of ON during 1995-2012. Each ON case was matched with 10 randomly selected population control subjects from general population. For all participants, we obtained a complete hospital history of comorbidities included in the CharlsonComorbidity Index 5 years preceding the inclusion date. RESULTS 4107 ON cases and 41 063 controls were included. The incidence of ON increased from 3.9 in 1995 to 5.5 in 2012 per 100 000 inhabitants. Solid cancer was the most common comorbidity, associated with an adjusted OR (aOR) for ON of 2.0 (95% CI 1.7 to 2.2). For advanced metastatic cancer, leukaemia and lymphoma, aORs of ON were 3.4 (95% CI 2.5 to 4.5), 4.3 (95% CI 2.7 to 7.0) and 5.8 (95% CI 4.3 to 7.8), respectively. Among other chronic conditions, aORs were 3.5 (95% CI 3.0 to 4.1) for connective tissue diseases and 2.3 (95% CI 2.0 to 2.7) for chronic pulmonary diseases. aORs were also increased at 2.8 (95% CI 1.9 to 4.1) and 4.5 (95% CI 2.5 to 8.2) for mild and moderate-to-severe liver disease, respectively, and 4.2 (95% CI 3.4 to 5.2) for renal disease. CONCLUSION This large population-based study provides evidence for an increasing ON incidence in the general population and documents an association between several common comorbid conditions and risk of ON.
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Affiliation(s)
- Alina Dima
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
- Department of Internal Medicine, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
- RECIF (Réseau d' Epidémiologie Clinique International Francophone), Bucharest, Romania
| | - Alma Becic Pedersen
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - Lars Pedersen
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - Cristian Baicus
- Department of Internal Medicine, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
- RECIF (Réseau d' Epidémiologie Clinique International Francophone), Bucharest, Romania
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Eiken PA, Prieto-Alhambra D, Eastell R, Abrahamsen B. Surgically treated osteonecrosis and osteomyelitis of the jaw and oral cavity in patients highly adherent to alendronate treatment: a nationwide user-only cohort study including over 60,000 alendronate users. Osteoporos Int 2017; 28:2921-2928. [PMID: 28664276 DOI: 10.1007/s00198-017-4132-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 06/16/2017] [Indexed: 10/19/2022]
Abstract
UNLABELLED Osteonecrosis of the jaw (ONJ) is rare (2.53/10,000 person-years) among alendronate users, but long-term and compliant use are associated with an increased risk of surgically treated ONJ. Risk of surgically treated ONJ is higher in patients with rheumatoid diseases and use of proton pump inhibitors. INTRODUCTION ONJ is a rare event in users of oral bisphosphonates. Our aims were to evaluate if the risk of surgically treated ONJ increases with longer or more compliant treatment with alendronate for osteoporosis and to identify risk factors for surgically treated ONJ. METHODS Open nationwide register-based cohort study containing one nested case-control study. Patients were treatment-naïve incident users of alendronate 1996-2007 in Denmark, both genders, aged 50-94 at the time of beginning treatment (N = 61,990). Participants were followed to 31 December 2013. RESULTS Over a mean of 6.8 years, 107 patients received surgery for ONJ or related conditions corresponding to an incidence rate of 2.53 (95% confidence interval (CI) 2.08 to 3.05) per 10,000 patient years. Recent use was associated with an adjusted odds ratio (OR) 4.13 (95% CI 1.94 to 8.79) compared to past use. Similarly, adherent users (medication possession ratio (MPR) >50%) were at two to threefold increased risk of ONJ compared to low adherence (MPR <50%), and long-term (>5 years) use was related with higher risk (adjusted OR 2.31 (95% CI (1.14 to 4.67)) than shorter-term use. History of rheumatoid disorders and use of proton pump inhibitors were independently associated with surgically treated ONJ. CONCLUSIONS Our data suggest that recent, long-term, and compliant uses of alendronate are associated with an increased risk of surgically treated ONJ. Nevertheless, the rates remain low, even in long-term adherent users. ONJ risk appears higher in patients with conditions likely to indirectly affect the oral mucosa.
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Affiliation(s)
- P A Eiken
- Department of Cardiology, Nephrology and Endocrinology, North Zealand Hospital, Hillerød, Dyrehavevej 29, 3400, Hillerød, Denmark.
- Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen, Denmark.
| | - D Prieto-Alhambra
- Musculoskeletal Pharmaco and Device Epidemiology, Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Botnar Research Centre, Windmill Road, Oxford, OX3 7LD, UK
- GREMPAL Research Group and CIBERFes, Idiap Jordi Gol, Universitat Autònoma de Barcelona and Instituto Carlos III (FEDER Research Funds), Av Gran Via Corts Catalanes 185, 08003, Barcelona, Spain
| | - R Eastell
- Academic Unit of Bone Metabolism (AUBM), University of Sheffield, Herries Road, Sheffield, S5 7AU, UK
| | - B Abrahamsen
- Department of Clinical Research, Odense Patient Data Explorative Network, University of Southern Denmark, J.B. Winsløws Vej 9 A, 3. Sal, 5000, Odense, Denmark
- Department of Medicine, Holbæk Hospital, Smedelundsgade 60, 4300, Holbæk, Denmark
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Kim HY, Kim JW, Kim SJ, Lee SH, Lee HS. Uncertainty of current algorithm for bisphosphonate-related osteonecrosis of the jaw in population-based studies: a systematic review. J Bone Miner Res 2017; 32:584-591. [PMID: 27736017 DOI: 10.1002/jbmr.3017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 09/28/2016] [Accepted: 10/10/2016] [Indexed: 11/07/2022]
Abstract
To assess the relevance of previous epidemiologic studies on bisphosphonate-related osteonecrosis of the jaw (BRONJ), we first conducted a systematic review of large population-based observational studies and evaluated the validity of claims-based algorithms for the identification of BRONJ. Studies containing primary observational epidemiologic data regarding bisphosphonate (BP) exposure and outcomes of osteonecrosis of the jaw were systematically reviewed. Using surrogates for identifying potential BRONJ cases from a population-based hospital registry, validation was performed through medical chart review. Positive predictive value (PPV) was estimated for each diagnostic code and for the overall algorithm utilized. Various strategies to increase PPV were also performed. Seventeen studies were systematically reviewed and presented with variations in study quality as well as inconsistent findings. Moreover, there was a high level of methodological heterogeneity. A total of 1920 patients were identified through the ICD-10 algorithm with potential BRONJ, although only 109 cases were confirmed, corresponding to an overall PPV of 5.68% (95% confidence interval [CI] 4.68-6.81). Only K10.2 (inflammatory conditions of the jaw) exhibited a relatively high PPV of 26.18%, which increased to 74.47% after confinement to BP users. Other strategies to increase PPV value were not effective. Our findings showed that the overall PPV for BRONJ identification was very low, indicating low validity of the current algorithm and possible overestimation of ONJ occurrence. There is an urgent need to develop more reliable and specific operational definitions for the identification of BRONJ cases in large population databases. © 2016 American Society for Bone and Mineral Research.
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Affiliation(s)
- Hye-Yeon Kim
- Department of Family Medicine, Graduate School of Medicine, Ewha Womans University, Seoul, Korea
- Research Institute for Intractable Osteonecrosis of the Jaw, School of Medicine, Ewha Womans University, Seoul, Korea
| | - Jin-Woo Kim
- Research Institute for Intractable Osteonecrosis of the Jaw, School of Medicine, Ewha Womans University, Seoul, Korea
- Department of Oral and Maxillofacial Surgery, Ewha Womans University Medical Center, Seoul, Korea
| | - Sun-Jong Kim
- Research Institute for Intractable Osteonecrosis of the Jaw, School of Medicine, Ewha Womans University, Seoul, Korea
- Department of Oral and Maxillofacial Surgery, Ewha Womans University Medical Center, Seoul, Korea
| | - Sang-Hwa Lee
- Department of Family Medicine, Graduate School of Medicine, Ewha Womans University, Seoul, Korea
| | - Hong-Soo Lee
- Department of Family Medicine, Graduate School of Medicine, Ewha Womans University, Seoul, Korea
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Acquavella J, Ehrenstein V, Schiødt M, Heide-Jørgensen U, Kjellman A, Hansen S, Larsson Wexell C, Herlofson BB, Noerholt SE, Ma H, Öhrling K, Hernandez RK, Sørensen HT. Design and methods for a Scandinavian pharmacovigilance study of osteonecrosis of the jaw and serious infections among cancer patients treated with antiresorptive agents for the prevention of skeletal-related events. Clin Epidemiol 2016; 8:267-72. [PMID: 27499646 PMCID: PMC4959599 DOI: 10.2147/clep.s107270] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Objective Osteonecrosis of the jaw (ONJ) is a recognized complication of potent antiresorptive therapies, especially at the doses indicated to prevent skeletal complications for cancer patients with bone metastases. This paper describes the rationale and methods for a prospective, post-authorization safety study of cancer patients treated with antiresorptive therapies. Methods As part of a comprehensive pharmacovigilance plan, developed with regulators’ input, the study will estimate incidence of ONJ and of serious infections among adult cancer patients with bone metastases treated with denosumab (120 mg subcutaneously) or zoledronic acid (4 mg intravenously, adjusted for renal function). Patients will be identified using routinely collected data combined with medical chart review in Denmark, Sweden, and Norway. Followup will extend from the first administration of antiresorptive treatment to the earliest of death, loss-to-follow-up, or 5 years after therapy initiation. Results will be reported for three treatment cohorts: denosumab-naïve patients, zoledronic acid-naïve patients, and patients who switch from bisphosphonate treatment to denosumab. ONJ cases will be identified in three newly established national ONJ databases and adjudicated by the committee that functioned during the XGEVA® clinical trials program. Conclusion This study will provide a real world counterpart to the clinical trial-estimated risks for ONJ and serious infections for cancer patients initiating denosumab or zoledronic acid. The establishment of ONJ databases in the three Scandinavian countries will have potential benefits outside this study for the elucidation of ONJ risk factors and the evaluation of ONJ treatment strategies.
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Affiliation(s)
- John Acquavella
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - Vera Ehrenstein
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - Morten Schiødt
- Department of Oral and Maxillofacial Surgery, Rigshospitalet, Copenhagen, Denmark
| | - Uffe Heide-Jørgensen
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - Anders Kjellman
- Department of Urology, Karolinska University Hospital; Department of Clinical Science, Intervention, and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Svein Hansen
- Cancer Registry of Norway, Oslo University Hospital, Oslo, Norway
| | - Cecilia Larsson Wexell
- Department of Oral and Maxillofacial Surgery, Södra Älvsborg Hospital, Borås, Sweden; Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Bente Brokstad Herlofson
- Department of Oral Surgery and Oral Medicine, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - Sven Erik Noerholt
- Department of Oral and Maxillofacial Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - Haijun Ma
- Global Biostatistical Science, Amgen Inc., Thousand Oaks, CA, USA
| | | | | | - Henrik Toft Sørensen
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
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Schmidt M, Schmidt SAJ, Sandegaard JL, Ehrenstein V, Pedersen L, Sørensen HT. The Danish National Patient Registry: a review of content, data quality, and research potential. Clin Epidemiol 2015; 7:449-90. [PMID: 26604824 PMCID: PMC4655913 DOI: 10.2147/clep.s91125] [Citation(s) in RCA: 3032] [Impact Index Per Article: 336.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Background The Danish National Patient Registry (DNPR) is one of the world’s oldest nationwide hospital registries and is used extensively for research. Many studies have validated algorithms for identifying health events in the DNPR, but the reports are fragmented and no overview exists. Objectives To review the content, data quality, and research potential of the DNPR. Methods We examined the setting, history, aims, content, and classification systems of the DNPR. We searched PubMed and the Danish Medical Journal to create a bibliography of validation studies. We included also studies that were referenced in retrieved papers or known to us beforehand. Methodological considerations related to DNPR data were reviewed. Results During 1977–2012, the DNPR registered 8,085,603 persons, accounting for 7,268,857 inpatient, 5,953,405 outpatient, and 5,097,300 emergency department contacts. The DNPR provides nationwide longitudinal registration of detailed administrative and clinical data. It has recorded information on all patients discharged from Danish nonpsychiatric hospitals since 1977 and on psychiatric inpatients and emergency department and outpatient specialty clinic contacts since 1995. For each patient contact, one primary and optional secondary diagnoses are recorded according to the International Classification of Diseases. The DNPR provides a data source to identify diseases, examinations, certain in-hospital medical treatments, and surgical procedures. Long-term temporal trends in hospitalization and treatment rates can be studied. The positive predictive values of diseases and treatments vary widely (<15%–100%). The DNPR data are linkable at the patient level with data from other Danish administrative registries, clinical registries, randomized controlled trials, population surveys, and epidemiologic field studies – enabling researchers to reconstruct individual life and health trajectories for an entire population. Conclusion The DNPR is a valuable tool for epidemiological research. However, both its strengths and limitations must be considered when interpreting research results, and continuous validation of its clinical data is essential.
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Affiliation(s)
- Morten Schmidt
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | | | | | - Vera Ehrenstein
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - Lars Pedersen
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - Henrik Toft Sørensen
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
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