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Benemei S, Boni L, Castaman G. Outcome measures in hemophilia: current and future perspectives. Expert Rev Hematol 2024. [PMID: 38861342 DOI: 10.1080/17474086.2024.2365929] [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: 12/20/2023] [Accepted: 06/05/2024] [Indexed: 06/13/2024]
Abstract
INTRODUCTION Hemophilia can detrimentally affect patients' quality of life and likelihood of survival. In the evolving landscape of therapies, the therapeutic gain of each treatment must be understood to accurately position it in the therapeutic armamentarium. Accordingly, appropriate outcomes must be measured with appropriate tools. AREAS COVERED Our narrative review (PubMed search for 'hemophilia AND outcome' until June 2023), provides a compendium of outcome measures used in hemophilia clinical research. To define each outcome measure's relative value and applicability, several characteristics are critically discussed. EXPERT OPINION Bleeding assessment, first annual/annualized bleeding rate, remains central in evaluating the efficacy and safety of hemophilia treatments. As modern therapies improve clinical outcomes toward zero bleeding events, this endpoint may become less sensitive to detect differences between therapeutic approaches. Technological advancements necessitate the adaptation of outcome measures to address infrequent bleeding events, age-related comorbidities, and laboratory parameters with limited comparability after different treatments. Considerable effort has been dedicated to the development of tools that comprehensively assess coagulation, such as thrombin generation assays. Patient-reported outcome measures are gaining importance although limited by their subjectivity. A definitive set of research outcome measures remains elusive. Outcomes may need to be tailored to different therapeutic interventions.
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Affiliation(s)
| | - Luca Boni
- IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Giancarlo Castaman
- Center for Bleeding Disorders and Coagulation, Department of Oncology, Careggi University Hospital, Florence, Italy
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2
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Thornburg CD. The benefits of gene therapy in people with haemophilia. J Viral Hepat 2024; 31 Suppl 1:4-8. [PMID: 38606945 DOI: 10.1111/jvh.13882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 08/06/2023] [Indexed: 04/13/2024]
Abstract
Haemophilia is an inherited bleeding disorder which causes significant morbidity and mortality, especially in the severe form. Prophylaxis with factor replacement has high efficacy in reducing bleeding but is limited by the need for frequent intravenous infusion and fluctuations in haemostasis between doses. Additional prophylaxis therapies are being developed which may overcome some of the current treatment barriers. Gene therapy (GT) is being developed to provide a functional cure such that there is sustained factor expression and minimal to no need for additional haemostatic therapy. There are now two approved gene therapies for haemophilia which may be transformative for many individuals. Benefits of GT should go beyond increasing factor activity and reducing bleeding as persons with haemophilia aim to achieve a 'haemophilia-free mind' and health equity with optimal health and well-being.
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Affiliation(s)
- Courtney D Thornburg
- Hemophilia and Thrombosis Treatment Center, Rady Children's Hospital San Diego, San Diego, California, USA
- Department of Pediatrics, Division of Hematology/Oncology, UC San Diego School of Medicine, La Jolla, California, USA
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3
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Matino D, Germini F, Chan AKC, Decker K, Iserman E, Chelle P, Edginton AN, Oladoyinbo O, Trinari E, Keepanasseril A, Iorio A. Canadian clinical experience on switching from standard half-life recombinant factor VIII (rFVIII), octocog alfa, to extended half-life rFVIII, damoctocog alfa pegol, in persons with haemophilia A ≥ 12 years followed in a Comprehensive Hemophilia Care Program in Canada. Haemophilia 2024; 30:345-354. [PMID: 38379181 DOI: 10.1111/hae.14960] [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: 12/15/2023] [Revised: 01/31/2024] [Accepted: 01/31/2024] [Indexed: 02/22/2024]
Abstract
INTRODUCTION Damoctocog alfa pegol (BAY 94-9027, Jivi®) is an extended half-life recombinant factor (F)VIII replacement, indicated for the treatment of haemophilia A in patients aged ≥12 years. Following introduction of damoctocog alfa pegol in Canada in 2020, there have been no reports on routine clinical effectiveness and satisfaction, when switching from a previous FVIII product in Canada. AIM To report changes in pharmacokinetics, effectiveness, utilization and patient satisfaction when switching to damoctocog alfa pegol prophylaxis from previous standard half-life octocog alfa (BAY 81-8973, Kovaltry®) treatment. METHODS A single-centre, intra-patient comparison of pharmacokinetics and clinical outcomes was performed. Blood samples drawn once pre-dose and ≥2 times post-dose were measured by a one-stage assay to assess pharmacokinetic parameters including area under the curve (AUC, primary endpoint). Patient-reported outcomes data were collected using the Patient-Reported Outcomes, Burdens and Experiences questionnaire (PROBE). Clinical outcomes included annualized bleeding rate (ABR) and factor utilization. RESULTS Dose-normalized AUC was significantly increased after switch to damoctocog alfa pegol from octocog alfa. Median (quartile [Q]1; Q3) annualized bleeding rates were 0.67 (0.00; 1.33) with damoctocog alfa pegol and 1.33 (0.00; 2.67) with octocog alfa. Half of the patients receiving damoctocog alfa pegol prophylaxis experienced zero bleeds (n = 9, 50.0%) versus 38.9% (n = 7) of patients treated with octocog alfa. Patients' good quality of life was maintained. CONCLUSION This study provides routine clinical evidence supporting the benefits of switching from octocog alfa to damoctocog alfa pegol for patients with severe haemophilia A.
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Affiliation(s)
- Davide Matino
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Federico Germini
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
- IRCCS Humanitas Research Hospital, Milan, Italy
| | - Anthony K C Chan
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada
| | - Kay Decker
- Hamilton Health Sciences, McMaster Children's Hospital, Hamilton, Ontario, Canada
| | - Emma Iserman
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Pierre Chelle
- School of Pharmacy, University of Waterloo, Waterloo, Ontario, Canada
| | - Andrea N Edginton
- School of Pharmacy, University of Waterloo, Waterloo, Ontario, Canada
| | | | - Elisabetta Trinari
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada
| | - Arun Keepanasseril
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Alfonso Iorio
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
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Miesbach W, von Drygalski A, Smith C, Sivamurthy K, Pinachyan K, Bensen-Kennedy D, Drelich D, Kulkarni R. The current challenges faced by people with hemophilia B. Eur J Haematol 2024; 112:339-349. [PMID: 38082533 DOI: 10.1111/ejh.14135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 11/01/2023] [Accepted: 11/02/2023] [Indexed: 02/17/2024]
Abstract
Hemophilia B (HB) is a rare, hereditary disease caused by a defect in the gene encoding factor IX (FIX) and leads to varying degrees of coagulation deficiency. The prevailing treatment for people with HB (PWHB) is FIX replacement product. The advent of recombinant coagulation products ushered in a new era of safety, efficacy, and improved availability compared with plasma-derived products. For people with severe HB, lifelong prophylaxis with a FIX replacement product is standard of care. Development of extended half-life FIX replacement products has allowed for advancements in the care of these PWHB. Nonetheless, lifelong need for periodic dosing and complex surveillance protocols pose substantive challenges in terms of access, adherence, and healthcare resource utilization. Further, some PWHB on prophylactic regimens continue to experience breakthrough bleeds and joint damage, and subpopulations of PWHB, including women, those with mild-to-moderate HB, and those with inhibitors to FIX, experience additional unique difficulties. This review summarizes the current challenges faced by PWHB, including the unique subpopulations; identifying the need for improved awareness, personalized care strategies, and new therapeutic options for severe HB, which may provide future solutions for some of the remaining unmet needs of PWHB.
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Affiliation(s)
| | | | | | | | | | | | | | - Roshni Kulkarni
- Michigan State University Center for Bleeding and Clotting Disorders, Lansing, Michigan, USA
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5
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Hay CRM, Makris M, Shima M, Nagao A, Jiménez-Yuste V, Skinner M, Kessler CM, von Mackensen S. Association of patient, treatment and disease characteristics with patient-reported outcomes: Results of the ECHO Registry. Haemophilia 2024; 30:106-115. [PMID: 38030962 DOI: 10.1111/hae.14895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 09/22/2023] [Accepted: 09/29/2023] [Indexed: 12/01/2023]
Abstract
INTRODUCTION Patient-reported outcomes (PROs) in people living with haemophilia A (PLWHA) are often under-reported. Investigating PROs from a single study with a diverse population of PLWHA is valuable, irrespective of FVIII product or regimen. AIM To report available data from the Expanding Communications on Haemophilia A Outcomes (ECHO) registry investigating the associations of patient, treatment and disease characteristics with PROs and clinical outcomes in PLWHA. METHODS ECHO (NCT02396862), a prospective, multinational, observational registry, enrolled participants aged ≥16 years with moderate or severe haemophilia A using any product or treatment regimen. Data collection, including a variety of PRO questionnaires, was planned at baseline and annually for ≥2 years. Associations between PRO scores and patient, treatment and disease characteristics were determined by statistical analyses. RESULTS ECHO was terminated early owing to logistical constraints. Baseline data were available from 269 PLWHA from Europe, the United States and Japan. Most participants received prophylactic treatment (76.2%), with those using extended-half-life products (10.0%) reporting higher treatment satisfaction. Older age and body weight >30 kg/m2 (>BMI) were associated with poorer joint health. Older age was associated with poorer physical functioning and work productivity. Health-related quality of life and pain interference also deteriorated with age and >BMI; >BMI also increased pain severity scores. CONCLUSION ECHO captured a variety of disease characteristics, treatment patterns, PROs and clinical outcomes obtained in real-world practice with ≤1 year's follow-up. Older age, poorer joint health and >BMI adversely affected multiple aspects of participant well-being.
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Affiliation(s)
- Charles R M Hay
- Manchester University Department of Haematology, Manchester, UK
| | - Michael Makris
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK
| | | | - Azusa Nagao
- Department of Blood Coagulation, Ogikubo Hospital, Tokyo, Japan
| | | | - Mark Skinner
- Institute for Policy Advancement Ltd., Washington, DC, USA
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
| | | | - Sylvia von Mackensen
- Department of Medical Psychology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
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Geng BF, Feng C, Liu SG, Jiang ZL, Lin F. Haemophilia item bank based on International Classification of Functioning, Disability and Health: a systematic review. Hematology 2023; 28:2191077. [PMID: 36946880 DOI: 10.1080/16078454.2023.2191077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Haemophilia comprises a continuum of blood disorders that often include joint and muscular dysfunction, which may lead to a constellation of activity limitations and participation restrictions. However, there is scant research incorporating functional assessment scales into the common language provided by the International Classification of Functioning, Disability and Health (ICF). This study aims to identify the ICF categories to include in an item bank of functioning aspects relevant for haemophilia. DESIGN AND METHODS A systematic search was carried out in July 2021 based on the PubMed MEDLINE, CLINICAL, and Cochrane databases for qualified articles, investigating haemophilia-specific scales and the scales recommended by the World Federation of Haemophilia (WFH) linked to ICF categories between 2001 and 2021. Well-trained healthcare professionals in the haemophilia field and ICF evaluation conducted group discussions to determine the ICF items for haemophilia. RESULTS A total of 112 out of 176 items measuring function were collected for the haemophilia ICF item bank, including 32 items for body function (b), 45 items for activity and participation (d), 27 items for environmental factors (e), and 8 items for body structure(s). INTERPRETATION AND CONCLUSIONS We recommend that future haemophilia research use the haemophilia-specific ICF item bank, which could capture a whole spectrum of functional measurements and facilitate multidisciplinary and worldwide communication. This study also indicates that further development and analysis of the psychometric properties of the 112 haemophilia-related ICF items is warranted.
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Affiliation(s)
- Bao-Feng Geng
- Department of Rehabilitation Medicine, Sir Run Run Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - Chun Feng
- The Center of Rehabilitation Therapy, The First Rehabilitation Hospital of Shanghai, Rehabilitation Hospital Affiliated to Tongji University, Shanghai, People's Republic of China
| | - Shou-Guo Liu
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Zhong-Li Jiang
- Department of Rehabilitation Medicine, Sir Run Run Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - Feng Lin
- Department of Rehabilitation Medicine, Sir Run Run Hospital, Nanjing Medical University, Nanjing, People's Republic of China
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
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Coffin D, Gouider E, Konkle B, Hermans C, Lambert C, Diop S, Ayoub E, Tootoonchian E, Youttananukorn T, Dakik P, Pereira T, Iorio A, Pierce GF. The World Federation of Hemophilia World Bleeding Disorders Registry: insights from the first 10,000 patients. Res Pract Thromb Haemost 2023; 7:102264. [PMID: 38193052 PMCID: PMC10772874 DOI: 10.1016/j.rpth.2023.102264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 10/26/2023] [Accepted: 10/30/2023] [Indexed: 01/10/2024] Open
Abstract
Background The prevalence of hemophilia varies globally, with close to 100% of patients diagnosed in high-income countries and as low as 12% diagnosed in lower-income countries. These inequalities in the care of people with hemophilia exist across various care indicators. Objectives This analysis aims to describe the clinical care outcomes of patients in the World Bleeding Disorders Registry (WBDR). Methods In 2018, the World Federation of Hemophilia developed a global registry, the WBDR, to permit hemophilia treatment centers to collect clinical data, monitor patient care longitudinally, and identify gaps in management and treatment. Results As of July 18, 2022, 10,276 people with hemophilia were enrolled from 87 hemophilia treatment centers in 40 countries. Nearly half (49%, n = 5084) of patients had severe hemophilia; 99% were male, 85% had hemophilia A, and 67% were from low-middle-income countries. Globally, the age of diagnosis for people with severe hemophilia has improved considerably over the last 50 years, from 82 months (∼7 years) for those born before 1980 to 11 months for those born after 2010, and most prominently, among people with severe hemophilia in low- and low-middle-income countries, the age of diagnosis improved from 418 months (∼35 years) for those born before 1970 to 12 months for those born after 2010. Overall, the age of diagnosis of people with hemophilia in low- and low-middle-income countries is delayed by 3 decades compared to patients in upper-middle-income countries and by 4 decades compared to patients in high-income countries. Conclusion Data reveal large treatment and care disparities between socioeconomic groups, showing improvements when prophylaxis is initiated to prevent bleeding. Overall, care provided in low-income countries lags behind high-income countries by up to 40 years. Limitations in the interpretation of data include risk of survival and selection bias.
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Affiliation(s)
- Donna Coffin
- World Federation of Hemophilia, Montreal, Quebec, Canada
| | - Emma Gouider
- Service d’hématologie biologique Hemophilia Center Aziza Othmana, Faculté de Médecine de Tunis, Tunis, Tunisia
| | - Barbara Konkle
- Washington Center for Bleeding Disorders, Bloodworks Northwest, Seattle, Washington, USA
| | - Cedric Hermans
- Department of Internal Medicine, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Catherine Lambert
- Haemostasis and Thrombosis Unit, Division of Hematology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Saliou Diop
- Department of Hematology, National Blood Transfusion Center, University Cheikh Anta Diop, Dakar, Senegal
| | - Emily Ayoub
- World Federation of Hemophilia, Montreal, Quebec, Canada
| | | | | | - Pamela Dakik
- World Federation of Hemophilia, Montreal, Quebec, Canada
| | | | - Alfonso Iorio
- Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
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8
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van Hoorn ES, Lingsma HF, Cnossen MH, Gouw SC. Patient-relevant health outcomes for von Willebrand disease, platelet function disorders, and rare bleeding disorders: a Delphi study. Res Pract Thromb Haemost 2023; 7:102201. [PMID: 37854454 PMCID: PMC10579528 DOI: 10.1016/j.rpth.2023.102201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/04/2023] [Accepted: 08/25/2023] [Indexed: 10/20/2023] Open
Abstract
Background To assess patient value, it is essential to regularly measure health outcomes that matter to patients. It is currently unknown which health outcomes are important for patients with autosomal inherited bleeding disorders. Objectives This study aimed to assess which health outcomes are important for patients with autosomal inherited bleeding disorders, consisting of von Willebrand disease, platelet function disorders, and rare bleeding disorders, as seen from the patients', caregivers', and healthcare professionals' perspectives. Methods Two panels, one consisting of patients and caregivers, and one consisting of healthcare professionals participated in a Delphi process. A list of 146 health outcomes was identified from the literature. During 3 rounds, both panels rated the importance of health outcomes on a 5-point Likert scale. A health outcome was considered important by a panel if it received a median score of 5 with an IQR of ≤1. Results In total, 13 patients, 10 caregivers, and 19 healthcare professionals participated in the Delphi study. Both panels reached consensus on the importance of health outcomes related to bleeding episodes, life-threatening complications, and the intensity and impact of menstruation. Patients and caregivers additionally reached consensus on the importance of health outcomes related to menstruation and the impact of the bleeding disorder on their daily lives. Healthcare professionals reached consensus on the importance of health outcomes related to treatment, joint health, and pain. Conclusion In this study, health outcomes were identified that should be considered when implementing value-based health care in the care of patients with autosomal inherited bleeding disorders.
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Affiliation(s)
- Evelien S. van Hoorn
- Department of Public Health, Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Hester F. Lingsma
- Department of Public Health, Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Marjon H. Cnossen
- Department of Pediatric Hematology and Oncology, Sophia Children’s Hospital, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Samantha C. Gouw
- Department of Pediatric Hematology, Amsterdam University Medical Centers location University of Amsterdam, Amsterdam, The Netherlands
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Rasul E, Hallock R, Hellmann M, Konduros J, Pembroke L, LeCleir G, Malacan J, von Mackensen S. Gene Therapy in Hemophilia: A Transformational Patient Experience. J Patient Exp 2023; 10:23743735231193573. [PMID: 37663068 PMCID: PMC10472832 DOI: 10.1177/23743735231193573] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2023] Open
Abstract
Hemophilia is a bleeding disorder caused by a single absent/defective gene and characterized by a lack of functional clotting factors. People with hemophilia may experience joint damage, pain, and psychological impairments, all of which could contribute to reduced health-related quality of life (HRQoL). The current standard of care is clotting factor replacement, which is associated with regular infusions; therefore, alternative treatments such as gene therapy (GT) are in development. GT involves the delivery of a functional copy of the clotting factor 8/9 gene by a single infusion into the patient's cells, enabling them to produce their own clotting factor VIII/IX. The impact of treatment on patients' HRQoL can be assessed using hemophilia-specific patient-reported outcome (PRO) measures. Since these measures were designed before the advent of GT, there is a need for updated individualized PRO measures. Patient groups and regulatory authorities emphasize the need for increased patient engagement when considering clinical trial design. Here, we provide patients' perspective on undergoing GT and discuss how to capture the patient voice when measuring the therapy's transformative impact.
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Affiliation(s)
- Enayet Rasul
- Patient author. Have either haemophilia A or B and have undergone gene therapy treatment
| | - Ryan Hallock
- Patient author. Have either haemophilia A or B and have undergone gene therapy treatment
| | - Magnus Hellmann
- Patient author. Have either haemophilia A or B and have undergone gene therapy treatment
| | - Jay Konduros
- Patient author. Have either haemophilia A or B and have undergone gene therapy treatment
| | - Luke Pembroke
- Patient author. Have either haemophilia A or B and have undergone gene therapy treatment
| | | | | | - Sylvia von Mackensen
- Department of Medical Psychology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
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Torres L, Peñuela O, Forero MDR, Satizabal J, Salazar X, Benavides D, Gamarra R, Rivera M, Vizcaya D, Franco JS. Quality of life, self-reported outcomes and impact of education among people with moderate and severe hemophilia A: An integrated perspective from a Latin American country. PLoS One 2023; 18:e0287972. [PMID: 37410717 PMCID: PMC10325071 DOI: 10.1371/journal.pone.0287972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 06/16/2023] [Indexed: 07/08/2023] Open
Abstract
Collecting and interpreting self-reported outcomes among people with hemophilia A supports the understanding of the burden of the disease and its treatment to improve holistic care. However, in Colombia, this information is limited. Therefore, this study aimed to describe the knowledge, perception and burden of hemophilia A from the patients' perspective. A cross-sectional study was conducted in the context of a hemophilia educational bootcamp held from November 29th to December 1st, 2019, in Medellin, Colombia. The bootcamp was organized by a hemophilia patient association responsible for contacting and inviting patients with hemophilia A (PwHA). Information on patients' health beliefs, treatment experiences, and health-related quality of life (HRQoL) was obtained through focus groups, individual interviews and the Patient Reported Outcomes, Burdens and Experiences (PROBE) questionnaire. A total of 25 moderate or severe PwHA were enrolled in this study and completed the PROBE questionnaire. Acute pain was the most frequently reported symptom, with 88% of the patients reporting the use of pain medication. Difficulty with activities of daily living was reported by 48%. Furthermore, 52% reported having more than 2 spontaneous bleeding events in the last year. Treatment was administered at home for 72% of patients, with regular prophylaxis as the most common treatment regimen. In terms of overall HRQoL, the median EQ-5D VAS score was 80 (IQR: 50-100). PwHA in Colombia still suffer from disease complications related to bleeding events, pain and disability that affect their HRQoL, which highlights the need to develop patient-centered initiatives to improve the wellness of this population.
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Byams VR, Baker JR, Bailey C, Connell NT, Creary MS, Curtis RG, Dinno A, Guelcher CJ, Kim M, Kulkarni R, Lattimore S, Norris KL, Ramirez L, Skinner MW, Symington S, Tobase P, Vázquez E, Warren BB, Wheat E, Buckner TW. Building the foundation for a community-generated national research blueprint for inherited bleeding disorders: research priorities in health services; diversity, equity, and inclusion; and implementation science. Expert Rev Hematol 2023; 16:87-106. [PMID: 36920863 PMCID: PMC11075128 DOI: 10.1080/17474086.2023.2183836] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 02/20/2023] [Indexed: 03/16/2023]
Abstract
BACKGROUND The National Hemophilia Foundation (NHF) conducted extensive all-stakeholder inherited bleeding disorder (BD) community consultations to inform a blueprint for future research. Sustaining and expanding the specialized and comprehensive Hemophilia Treatment Center care model, to better serve all people with inherited BDs (PWIBD), and increasing equitable access to optimal health emerged as top priorities. RESEARCH DESIGN AND METHODS NHF, with the American Thrombosis and Hemostasis Network (ATHN), convened multidisciplinary expert working groups (WG) to distill priority research initiatives from consultation findings. WG5 was charged with prioritizing health services research (HSR); diversity, equity, and inclusion (DEI); and implementation science (IS) research initiatives to advance community-identified priorities. RESULTS WG5 identified multiple priority research themes and initiatives essential to capitalizing on this potential. Formative studies using qualitative and mixed methods approaches should be conducted to characterize issues and meaningfully investigate interventions. Investment in HSR, DEI and IS education, training, and workforce development are vital. CONCLUSIONS An enormous amount of work is required in the areas of HSR, DEI, and IS, which have received inadequate attention in inherited BDs. This research has great potential to evolve the experiences of PWIBD, deliver transformational community-based care, and advance health equity.
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Affiliation(s)
- Vanessa R. Byams
- Division of Blood Disorders, National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Judith R. Baker
- Center for Inherited Blood Disorders, Western States Regional Hemophilia Network, Orange, California, USA
| | - Cindy Bailey
- Los Angeles Orthopaedic Hemophilia Treatment Center, Los Angeles, California, USA
| | - Nathan T. Connell
- Boston Hemophilia Center, Division of Hematology, Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts, USA
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA
| | - Melissa S. Creary
- American Thrombosis and Hemostasis Network, Rochester, New York, USA
- Department of Health Management and Policy, University of Michigan School of Public Health, Ann Arbor, Michigan, USA
| | - Randall G. Curtis
- Hematology Utilization Group Study (HUGS), University of Southern California, Los Angeles, California, USA
- Hemophilia Foundation of Southern California, Pasadena, California, USA
| | - Alexis Dinno
- The Oregon Health & Science University-Portland State University School of Public Health, Portland, Oregon, USA
| | - Christine J. Guelcher
- Hemostasis and Thrombosis Program, Children’s National Hospital, Washington, DC, USA
| | - Michelle Kim
- The Oregon Health & Science University-Portland State University School of Public Health, Portland, Oregon, USA
| | - Roshni Kulkarni
- MSU Center of Bleeding and Clotting Disorders, Department Pediatrics and Human Development, Michigan State University, East Lansing, Michigan, USA
| | - Susan Lattimore
- Department of Pediatrics, Oregon Health & Science University, Portland, Oregon, USA
- Mountain States Regional Hemophilia Network, Portland, Oregon, USA
| | | | - Lucy Ramirez
- Rush Hemophilia and Thrombophilia Treatment Center, Rush University Medical Center, Chicago, Illinois, USA
| | - Mark W. Skinner
- Institute for Policy Advancement, Washington, DC, USA
- Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | | | - Patricia Tobase
- University of California San Francisco Hemophilia Treatment Center, University of California San Francisco, San Francisco, California, USA
| | | | - Beth B. Warren
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA
- Hemophilia and Thrombosis Center, Division of Hematology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Emily Wheat
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA
- Hemophilia and Thrombosis Center, Division of Hematology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Tyler W. Buckner
- Hemophilia and Thrombosis Center, Division of Hematology, University of Colorado School of Medicine, Aurora, Colorado, USA
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Dubé E, Merlen C, Bonnefoy A, Pilon J, Zourikian N, Gauthier J, St-Louis J, Rivard GÉ. Switching to emicizumab: A prospective surveillance study in haemophilia A subjects with inhibitors. Haemophilia 2023; 29:348-351. [PMID: 36315386 DOI: 10.1111/hae.14685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 10/12/2022] [Accepted: 10/13/2022] [Indexed: 11/04/2022]
Affiliation(s)
| | | | | | | | | | | | - Jean St-Louis
- CHU Sainte-Justine, Montréal, Canada.,Hôpital Maisonneuve-Rosemont, Montréal, Canada
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13
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Manco-Johnson MJ. Long-term prophylaxis: what are our options and how to define success? HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2022; 2022:579-585. [PMID: 36485126 PMCID: PMC9820516 DOI: 10.1182/hematology.2022000397] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Currently, we are at an enviable place in hemophilia treatment. Although full prophylaxis with standard half-life recombinant or plasma-derived factor concentrates has been definitively shown to be inadequate for full protection against bleeding and arthropathy, a number of novel therapies with improved hemostatic enhancement are clinically available or in promising clinical trials. In order to compare outcomes among a number of very efficacious therapies, it is necessary to have sensitive tools employed in long-term follow-up for several years for participants with no or minimal joint disease. The tool kit must be comprehensive, with outcomes of bleeding, factor level restoration or hemostatic capacity, joint structure, joint function, pain, quality of life, and patient satisfaction. This article reviews the history of prophylaxis, the promise of emerging therapies, and the sensitive tools used to assess long-term efficacy for joint structure and function.
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Affiliation(s)
- Marilyn Jean Manco-Johnson
- Correspondence Marilyn Jean Manco-Johnson, University of Colorado Anschutz Medical Center, 13199 E Montview Blvd, Ste 100, Aurora CO, 80045; e-mail:
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14
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van Balen EC, Hassan S, Smit C, Driessens MHE, Beckers EAM, Coppens M, Eikenboom JC, Hooimeijer HL, Leebeek FWG, Mauser-Bunschoten EP, van Vulpen LFD, Schols SEM, Rosendaal FR, van der Bom JG, Gouw SC. Socioeconomic participation of persons with hemophilia: Results from the sixth hemophilia in the Netherlands study. Res Pract Thromb Haemost 2022; 6:e12741. [PMID: 36051543 PMCID: PMC9414229 DOI: 10.1002/rth2.12741] [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: 03/04/2022] [Revised: 04/11/2022] [Accepted: 04/22/2022] [Indexed: 11/12/2022] Open
Abstract
Background and objectives Treatment availability and comprehensive care have resulted in improved clinical outcomes for persons with hemophilia. Recent data on socioeconomic participation in the Netherlands are lacking. This study assessed participation in education, in the labor market, and social participation for persons with hemophilia compared with the general male population. Methods Dutch adults and children (5–75 years) of all hemophilia severities (n = 1009) participated in a questionnaire study that included sociodemographic, occupational, and educational variables. Clinical characteristics were extracted from electronic medical records. General population data were extracted from Statistics Netherlands. Social participation was assessed with the PROMIS Ability to Participate in Social Roles and Activities short form, with a minimal important difference set at 1.0. Results Data from 906 adults and children were analyzed. Participation in education of 20 to 24 year olds was 68% (general male population: 53%). Educational attainment was higher compared with Dutch males, especially for severe hemophilia. Absenteeism from school was more common than in the general population. The employment‐to‐population ratio and occupational disability were worse for severe hemophilia than in the general population (64.3% vs. 73.2% and 14.7% vs. 4.8%, respectively), but similar for nonsevere hemophilia. Unemployment was 5.4% (general male population: 3.4%). Absenteeism from work was less common (38% vs. 45.2%). Mean PROMIS score was similar to or higher than in the general population (54.2; SD 8.9 vs. 50; SD 10). Conclusion Socioeconomic participation of persons with nonsevere hemophilia was similar to the general male population. Some participation outcomes for persons with severe hemophilia were reduced.
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Affiliation(s)
- Erna C van Balen
- Department of Clinical Epidemiology Leiden University Medical Center The Netherlands
| | - Shermarke Hassan
- Department of Clinical Epidemiology Leiden University Medical Center The Netherlands
| | - Cees Smit
- Department of Clinical Epidemiology Leiden University Medical Center The Netherlands
| | | | - Erik A M Beckers
- Department of Hematology Maastricht University Medical Centre Maastricht The Netherlands
| | - Michiel Coppens
- Department of Vascular Medicine Amsterdam Cardiovascular Sciences Amsterdam UMC University of Amsterdam Amsterdam The Netherlands
| | - Jeroen C Eikenboom
- Department of Internal Medicine Division of Thrombosis and Hemostasis Leiden University Medical Center Leiden The Netherlands
| | - Hélène L Hooimeijer
- Department of Paediatrics University Medical Center Groningen Groningen The Netherlands
| | - Frank W G Leebeek
- Department of Hematology Erasmus University Medical Center Erasmus MC Rotterdam The Netherlands
| | - Evelien P Mauser-Bunschoten
- Center for Benign Haematology Thrombosis and Haemostasis Van Creveldkliniek University Medical Center Utrecht University Utrecht Utrecht The Netherlands
| | - Lize F D van Vulpen
- Center for Benign Haematology Thrombosis and Haemostasis Van Creveldkliniek University Medical Center Utrecht University Utrecht Utrecht The Netherlands
| | - Saskia E M Schols
- Department of Hematology Radboud university medical center Nijmegen The Netherlands.,Hemophilia Treatment Center Nijmegen-Eindhoven-Maastricht Nijmegen The Netherlands
| | - Frits R Rosendaal
- Department of Clinical Epidemiology Leiden University Medical Center The Netherlands
| | - Johanna G van der Bom
- Department of Clinical Epidemiology Leiden University Medical Center The Netherlands.,Center for Clinical Transfusion Research Sanquin Research/LUMC Leiden The Netherlands
| | - Samantha C Gouw
- Department of Clinical Epidemiology Leiden University Medical Center The Netherlands.,Pediatric Hematology Emma Children's Hospital Amsterdam UMC University of Amsterdam Amsterdam The Netherlands
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15
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Kennedy M, O' Mahony B, Roche S, McGowan M, Singleton E, Ryan K, O' Connell NM, Pipe SW, Lavin M, O' Donnell JS, Turecek PL, Gormley J. Pain and functional disability amongst adults with moderate and severe haemophilia from the Irish personalised approach to the treatment of haemophilia (iPATH) study. Eur J Haematol Suppl 2022; 108:518-527. [PMID: 35258118 PMCID: PMC9311204 DOI: 10.1111/ejh.13763] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 03/01/2022] [Accepted: 03/02/2022] [Indexed: 12/15/2022]
Abstract
Objectives To establish the prevalence of pain and functional disability in Irish adults with moderate and severe haemophilia, and to examine demographic and lifestyle influences. Methods Males ≥18 years with moderate or severe haemophilia participated. Pain and function were examined using the PROBE questionnaire. Results Of 49 participants [median age 44 (IQR 32, 52) years], most had severe haemophilia (Factor VIII = 30; Factor IX = 13) and were on regular prophylaxis (88%). Those with moderate haemophilia (Factor VIII = 5; Factor IX = 1) treated on demand (12%). Acute (72%) and chronic pain (71%), functional difficulties (58%), and analgesic requirements (92%) were prevalent. Age was significantly associated with more advanced haemophilic arthropathy (p = .002), chronic pain (p = .029) and functional difficulties (p = .036). Adults who reported chronic pain commenced prophylaxis significantly later in life [32 (20, 51) vs. 8 (1, 23) years; p = .004]. Physical activity was significantly lower in those with functional difficulties (p < .05). A disparity between self‐perceived ‘target joints’ and clinically defined target joints was also identified (76% vs. 23%). Conclusion Haemophilic arthropathy, pain and functional disability were prevalent amongst Irish adults with moderate and severe haemophilia. Age‐dependent lifestyle, analgesic and treatment influences on pain and function warrant further investigation.
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Affiliation(s)
- Megan Kennedy
- Discipline of Physiotherapy, Trinity Centre for Health Sciences, Trinity College Dublin, St. James's Hospital, Dublin, Ireland
| | | | - Sheila Roche
- National Coagulation Centre, St. James's Hospital, Dublin, Ireland
| | - Mark McGowan
- National Coagulation Centre, St. James's Hospital, Dublin, Ireland
| | - Evelyn Singleton
- National Coagulation Centre, St. James's Hospital, Dublin, Ireland
| | - Kevin Ryan
- National Coagulation Centre, St. James's Hospital, Dublin, Ireland
| | | | - Steven W Pipe
- Departments of Pediatrics and Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Michelle Lavin
- National Coagulation Centre, St. James's Hospital, Dublin, Ireland.,Irish Centre for Vascular Biology, School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - James S O' Donnell
- National Coagulation Centre, St. James's Hospital, Dublin, Ireland.,Irish Centre for Vascular Biology, School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Peter L Turecek
- Baxalta Innovations GmbH, A Member of the Takeda Group of Companies, Vienna, Austria
| | - John Gormley
- Discipline of Physiotherapy, Trinity Centre for Health Sciences, Trinity College Dublin, St. James's Hospital, Dublin, Ireland
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16
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Germini F, Borg Debono V, Page D, Zuk V, Kucher A, Cotoi C, Hobson N, Sevestre M, Skinner MW, Iorio A. User-Centered Development and Testing of the Online Patient-Reported Outcomes, Burdens, and Experiences (PROBE) Survey and the myPROBE App and Integration With the Canadian Bleeding Disorder Registry: Mixed Methods Study. JMIR Hum Factors 2022; 9:e30797. [PMID: 35234648 PMCID: PMC8928049 DOI: 10.2196/30797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 10/25/2021] [Accepted: 11/11/2021] [Indexed: 11/13/2022] Open
Abstract
Background The Patient-Reported Outcomes, Burdens, and Experiences (PROBE) questionnaire is a tool for assessing the quality of life and disease burden in people living with hemophilia. Objective The objectives of our study were (1) to assess the needs of relevant stakeholders involved in the use of PROBE, (2) to develop the software infrastructure needed to meet these needs, and (3) to test the usability of the final product. Methods We conducted a series of semistructured interviews of relevant stakeholders, including PROBE investigators, people with hemophilia, and representatives of the sponsor. Based on these, we developed an online survey and a mobile app for iOS and Android. A user group evaluated the final product using the System Usability Scale (SUS) and an open feedback framework. Results The online survey was updated, and the myPROBE app for mobile devices and a new application programming interface were developed. The app was tested and modified according to user feedback over multiple cycles. The final version of the app was released in July 2019. Seventeen users aged 23 to 67 years evaluated the final version of the app using the SUS. The median (first, third quartile) SUS score for the app was 85 (68, 88) out of 100. The newly introduced functionalities were as follows: (1) capability to longitudinally track repeated fillings of the questionnaire at different time points by the same participant (as opposed to anonymous completion); (2) linking of the questionnaire with hemophilia registries, starting with the Canadian Bleeding Disorders Registry as a proof of concept; (3) removing or adding questions as needed; and (4) sending notifications to the users (eg, reminders). A new secure database was built for securely storing personal information separately from the questionnaire data. The PROBE online survey is currently available in 96 countries and 34 languages. Conclusions The online survey was updated successfully, and the myPROBE app was developed, with a SUS score of 85 (out of 100). The app has been released in 81 countries and 34 languages. This will facilitate data collection for research and advocacy purposes, and the use of this tool in everyday clinical practice.
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Affiliation(s)
- Federico Germini
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada.,Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Victoria Borg Debono
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| | - David Page
- Canadian Hemophilia Society, Montreal, QC, Canada
| | - Victoria Zuk
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| | - Alexandra Kucher
- Patient Outcomes Research Group Ltd, Washington, DC, United States
| | - Chris Cotoi
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| | - Nicholas Hobson
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| | | | - Mark W Skinner
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada.,Institute for Policy Advancement Ltd, Washington, DC, United States
| | - Alfonso Iorio
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada.,Department of Medicine, McMaster University, Hamilton, ON, Canada
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- see Acknowledgments, Hamilton, ON, Canada
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17
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Kuijlaars IAR, Teela L, van Vulpen LFD, Timmer MA, Coppens M, Gouw SC, Peters M, Kruip MJHA, Cnossen MH, Muis JJ, van Hoorn ES, Haverman L, Fischer K. Generic PROMIS item banks in adults with hemophilia for patient-reported outcome assessment: Feasibility, measurement properties, and relevance. Res Pract Thromb Haemost 2021; 5:e12621. [PMID: 34849449 PMCID: PMC8606028 DOI: 10.1002/rth2.12621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 10/02/2021] [Accepted: 10/13/2021] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Legacy hemophilia-specific questionnaires are considered too long, show floor-/ceiling effects, and/or include irrelevant questions. Patient Reported Outcomes Measurement Information System (PROMIS) item banks, including Computer Adaptive Tests (CATs) and short forms, were designed for more efficient outcome assessment. OBJECTIVES Evaluate the feasibility, measurement properties, and relevance of seven PROMIS CATs and two short forms in patients with hemophilia. PATIENTS/METHODS In this cross-sectional study, Dutch adults with hemophilia completed nine PROMIS item banks electronically. Feasibility was assessed by number of items and floor/ceiling effects. Reliability was determined as the proportion of reliable scores (standard error ≤3.2). Construct validity was assessed by comparison with legacy instruments and expected differences between subgroups. Relevance of item banks was determined by proportions of limited scores. RESULTS Overall, 142 of 373 invited patients (mean age, 47 [range, 18-79], 49% severe hemophilia, 46% receiving prophylaxis) responded. Per CAT item bank, mean number of items answered varied from 5 (range, 3-12) to 9 (range, 5-12), with floor effects in pain interference (26% lowest scores) and depression (18% lowest scores). Construct validity and reliability were good for physical function, pain interference, satisfaction with social roles and activities, and fatigue. The CAT physical function showed the most limited scores (38%). The self-efficacy short forms showed ceiling effects (22%-28%) and no relation with the legacy instruments. CONCLUSIONS The PROMIS CATs physical function, pain interference, satisfaction with social roles and activities, and fatigue are feasible, reliable, and valid alternatives to legacy instruments for patients with hemophilia, with few items and low floor-/ceiling effects.
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Affiliation(s)
- Isolde A. R. Kuijlaars
- Van CreveldkliniekUniversity Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
| | - Lorynn Teela
- Amsterdam University Medical CentersEmma Children’s HospitalChild and Adolescent Psychiatry & Psychosocial CareAmsterdam Reproduction and DevelopmentAmsterdam Public HealthUniversity of AmsterdamAmsterdamThe Netherlands
| | - Lize F. D. van Vulpen
- Van CreveldkliniekUniversity Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
| | - Merel A. Timmer
- Van CreveldkliniekUniversity Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
| | - Michiel Coppens
- Department of Vascular MedicineAmsterdam Cardiovascular SciencesAmsterdam University Medical CentersUniversity of AmsterdamAmsterdamThe Netherlands
| | - Samantha C. Gouw
- Emma Children’s HospitalAmsterdam University Medical CentersPediatric HematologyUniversity of AmsterdamAmsterdamThe Netherlands
- Department of Clinical EpidemiologyLeiden University Medical CenterLeidenThe Netherlands
| | - Marjolein Peters
- Emma Children’s HospitalAmsterdam University Medical CentersPediatric HematologyUniversity of AmsterdamAmsterdamThe Netherlands
| | - Marieke J. H. A. Kruip
- Erasmus MCDepartment of HematologyErasmus University Medical Center RotterdamRotterdamThe Netherlands
| | - Marjon H. Cnossen
- Erasmus MCDepartment of Pediatric HematologySophia Children’s HospitalErasmus University Medical Center RotterdamRotterdamThe Netherlands
| | - Jelmer J. Muis
- Amsterdam University Medical CentersEmma Children’s HospitalChild and Adolescent Psychiatry & Psychosocial CareAmsterdam Reproduction and DevelopmentAmsterdam Public HealthUniversity of AmsterdamAmsterdamThe Netherlands
- Emma Children’s HospitalAmsterdam University Medical CentersPediatric HematologyUniversity of AmsterdamAmsterdamThe Netherlands
| | - Evelien S. van Hoorn
- Erasmus MCDepartment of Public HealthErasmus University Medical Center RotterdamRotterdamThe Netherlands
| | - Lotte Haverman
- Amsterdam University Medical CentersEmma Children’s HospitalChild and Adolescent Psychiatry & Psychosocial CareAmsterdam Reproduction and DevelopmentAmsterdam Public HealthUniversity of AmsterdamAmsterdamThe Netherlands
| | - Kathelijn Fischer
- Van CreveldkliniekUniversity Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
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18
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Germini F, Chai-Adisaksopha C, Pete D, Curtis R, Frick N, Nichol MB, Noone D, O'Mahony B, Page D, Stonebraker JS, Thabane L, Crowther MA, Skinner MW, Iorio A. Evaluation of the sexual health in people living with hemophilia. Haemophilia 2021; 27:993-1001. [PMID: 34538001 DOI: 10.1111/hae.14410] [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: 07/18/2018] [Revised: 08/26/2021] [Accepted: 08/31/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Knowledge about sexual health, difficulty with sexual activity and intimacy (sexual difficulty), in people with hemophilia is little understood. OBJECTIVES The objectives were to determine the prevalence of sexual difficulty in people living with hemophilia (PWH) compared to people with no bleeding disorders (PWNoBD), and to determine factors associated with it. METHODS This was an analysis of the PROBE study. We recruited individuals who had hemophilia A or B (PWH) and PWNoBD who were 18 years old or older. We calculated proportions of participants with sexual difficulty and odds ratios (ORs) adjusted for sex and age with 95% confidence intervals. RESULTS There were 2007 PWH and 1972 PWNoBD. Mean (standard deviation) age was 41 (15) years in PWH and 42 (13) years in PWNoBD. Sexual difficulty was reported in 302 (15.1%) PWH and 79 (4.0%) PWNoBD. The odds of sexual difficulty were significantly higher in PWH (OR 3.82, 95% CI 2.85, 5.11). Among PWH, older age, experiencing acute or chronic pain in the past 12 months, bleeds within the past two weeks, ≥3 spontaneous joint bleeds (past six months), limitation of range of motion of any joints, and any life- or limb-threatening bleeds in the past 12 months were associated with sexual difficulty. CONCLUSIONS Sexual difficulty is more prevalent in people living with hemophilia and associated with markers of disease severity. Sexual health issues should be incorporated in comprehensive hemophilia care, future research, and hemophilia related health policy.
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Affiliation(s)
- Federico Germini
- Department of Medicine, McMaster University, Hamilton, ON, Canada.,Department of HEI, McMaster University, Hamilton, ON, Canada
| | - Chatree Chai-Adisaksopha
- Department of Medicine, McMaster University, Hamilton, ON, Canada.,Department of HEI, McMaster University, Hamilton, ON, Canada
| | - Drashti Pete
- Department of HEI, McMaster University, Hamilton, ON, Canada
| | | | - Neil Frick
- National Hemophilia Foundation, New York, USA
| | - Michael B Nichol
- Sol Price School of Public Policy, University of Southern California, Los Angeles, USA
| | | | - Brian O'Mahony
- Irish Haemophilia Society, Dublin, Ireland.,Trinity College Dublin, Dublin, Ireland
| | - David Page
- Canadian Hemophilia Society, Montreal, Canada
| | | | - Lehana Thabane
- Department of HEI, McMaster University, Hamilton, ON, Canada.,Biostatistics Unit, St Joseph's Healthcare, Hamilton, Canada
| | - Mark A Crowther
- Department of Medicine, McMaster University, Hamilton, ON, Canada.,Department of HEI, McMaster University, Hamilton, ON, Canada
| | - Mark W Skinner
- Department of HEI, McMaster University, Hamilton, ON, Canada.,Institute for Policy Development Ltd, Washington, USA
| | - Alfonso Iorio
- Department of Medicine, McMaster University, Hamilton, ON, Canada.,Department of HEI, McMaster University, Hamilton, ON, Canada
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Chan CL, Taljaard M, Lancaster GA, Brehaut JC, Eldridge SM. Pilot and feasibility studies for pragmatic trials have unique considerations and areas of uncertainty. J Clin Epidemiol 2021; 138:102-114. [PMID: 34229091 DOI: 10.1016/j.jclinepi.2021.06.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 06/04/2021] [Accepted: 06/29/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND AND OBJECTIVE Feasibility studies are increasingly being used to support the development of, and investigate uncertainties around, future large-scale trials. The future trial can be designed with either a pragmatic or explanatory mindset. Whereas pragmatic trials aim to inform the choice between different care options and thus, are designed to resemble conditions outside of a clinical trial environment, explanatory trials examine the benefit of a treatment under more controlled conditions. There is existing guidance for designing feasibility studies, but none that explicitly considers the goals of pragmatic designs. We aimed to identify unique areas of uncertainty that are relevant to planning a pragmatic trial. RESULTS We identified ten relevant domains, partly based on the pragmatic-explanatory continuum indicator summary-2 (PRECIS-2) framework, and describe potential questions of uncertainty within each: intervention development, research ethics, participant identification and eligibility, recruitment of individuals, setting, organization, flexibility of delivery, flexibility of adherence, follow-up, and importance of primary outcome to patients and decision-makers. We present examples to illustrate how uncertainty in these domains might be addressed within a feasibility study. CONCLUSION Researchers planning a feasibility study in advance of a pragmatic trial should consider feasibility objectives specifically relevant to areas of uncertainty for pragmatic trials.
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Affiliation(s)
- Claire L Chan
- Centre for Clinical Trials and Methodology, Institute of Population Health Sciences, Queen Mary University of London, London, E1 2AB, UK
| | - Monica Taljaard
- Ottawa Hospital Research Institute, Clinical Epidemiology Program, Centre for Practice-Changing Research, The Ottawa Hospital, Ottawa, ON, K1H 8L6, Canada; School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada.
| | - Gillian A Lancaster
- Keele Clinical Trials Unit, School of Medicine, Keele University, Keele, Staffordshire, ST5 5BG, UK
| | - Jamie C Brehaut
- Ottawa Hospital Research Institute, Clinical Epidemiology Program, Centre for Practice-Changing Research, The Ottawa Hospital, Ottawa, ON, K1H 8L6, Canada; School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
| | - Sandra M Eldridge
- Centre for Clinical Trials and Methodology, Institute of Population Health Sciences, Queen Mary University of London, London, E1 2AB, UK
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20
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Krumb E, Hermans C. Living with a "hemophilia-free mind" - The new ambition of hemophilia care? Res Pract Thromb Haemost 2021; 5:e12567. [PMID: 34377886 PMCID: PMC8331948 DOI: 10.1002/rth2.12567] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 06/16/2021] [Indexed: 11/08/2022] Open
Abstract
Despite the numerous and groundbreaking therapeutic advances made in the field of hemophilia over the past decades and particularly in recent years, hemophilia remains a disease that has a major impact on the daily lives of our patients, through the multiple complications and burdensome treatments it imposes. The disease burden is not only physical but also psychological and is difficult to evaluate solely by questionnaires and scores. In this article, we propose to examine the absence of psychological burden and of permanent thoughts about the disease and its complications in people with hemophilia as a new ambition that should guide hemophilia care and research in the future.
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Affiliation(s)
- Evelien Krumb
- Hemostasis and Thrombosis UnitDivision of HematologyCliniques universitaires Saint‐LucUniversité catholique de Louvain (UCLouvain)BrusselsBelgium
| | - Cedric Hermans
- Hemostasis and Thrombosis UnitDivision of HematologyCliniques universitaires Saint‐LucUniversité catholique de Louvain (UCLouvain)BrusselsBelgium
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21
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van Balen EC, O'Mahony B, Cnossen MH, Dolan G, Blanchette VS, Fischer K, Gue D, O'Hara J, Iorio A, Jackson S, Konkle BA, Nugent DJ, Coffin D, Skinner MW, Smit C, Srivastava A, van Eenennaam F, van der Bom JG, Gouw SC. Patient-relevant health outcomes for hemophilia care: Development of an international standard outcomes set. Res Pract Thromb Haemost 2021; 5:e12488. [PMID: 34027286 PMCID: PMC8117824 DOI: 10.1002/rth2.12488] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 12/05/2020] [Accepted: 12/29/2020] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Patient-relevant health outcomes for persons with hemophilia should be identified and prioritized to optimize and individualize care for persons with hemophilia. Therefore, an international group of persons with hemophilia and multidisciplinary health care providers set out to identify a globally applicable standard set of health outcomes relevant to all individuals with hemophilia. METHODS A systematic literature search was performed to identify possible health outcomes and risk adjustment variables. Persons with hemophilia and multidisciplinary health care providers were involved in an iterative nominal consensus process to select the most important health outcomes and risk adjustment variables for persons with hemophilia. Recommendations were made for outcome measurement instruments. RESULTS Persons with hemophilia were defined as all men and women with an X-linked inherited bleeding disorder caused by a deficiency of coagulation factor VIII or IX with plasma activity levels <40 IU/dL. We recommend collecting the following 10 health outcomes at least annually, if applicable: (i) cure, (ii) impact of disease on life expectancy, (iii) ability to engage in normal daily activities, (iv) severe bleeding episodes, (v) number of days lost from school or work, (vi) chronic pain, (vii) disease and treatment complications, (viii) sustainability of physical functioning, (ix) social functioning, and (x) mental health. Validated clinical as well as patient-reported outcome measurement instruments were endorsed. Demographic factors, baseline clinical factors, and treatment factors were identified as risk-adjustment variables. CONCLUSION A consensus-based international set of health outcomes relevant to all persons with hemophilia, and corresponding measurement instruments, was identified for use in clinical care to facilitate harmonized longitudinal monitoring and comparison of outcomes.
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Affiliation(s)
- Erna C. van Balen
- Department of Clinical EpidemiologyLeiden University Medical CenterLeidenThe Netherlands
| | | | - Marjon H. Cnossen
- Department of Pediatric HematologyErasmus University Medical Center – Sophia Children's HospitalRotterdamThe Netherlands
| | - Gerard Dolan
- Centre for Haemostasis and ThrombosisSt Thomas' HospitalLondonUK
| | - Victor S. Blanchette
- Division of Hematology/OncologyDepartment of PediatricsHospital for Sick ChildrenUniversity of TorontoTorontoONCanada
| | - Kathelijn Fischer
- Van CreveldkliniekDepartment of HematologyUniversity Medical Centre UtrechtUtrechtThe Netherlands
| | - Deborah Gue
- British Columbia Provincial Bleeding Disorders Program – Adult DivisionSt. Paul's HospitalVancouverBCCanada
| | - Jamie O'Hara
- Faculty of Health and Social CareUniversity of ChesterChesterUK
| | - Alfonso Iorio
- Department of MedicineMcMaster‐Bayer Endowed Research Chair in Clinical Epidemiology of Congenital Bleeding DisordersMcMaster UniversityHamiltonONCanada
- Department of Health Research Methods, Evidence and ImpactMcMaster‐Bayer Endowed Research Chair in Clinical Epidemiology of Congenital Bleeding DisordersMcMaster UniversityHamiltonONCanada
| | - Shannon Jackson
- British Columbia Provincial Bleeding Disorders Program – Adult DivisionSt. Paul's HospitalVancouverBCCanada
| | - Barbara A. Konkle
- Bloodworks NorthwestSeattleWAUSA
- Department of MedicineUniversity of WashingtonSeattleWAUSA
| | - Diane J. Nugent
- Children's HospitalUniversity of CaliforniaIrvine
- Center for Inherited Blood DisordersOrangeCAUSA
| | | | - Mark W. Skinner
- National Hemophilia FoundationNew YorkNYUSA
- Institute for Policy Advancement LtdWashingtonDCUSA
| | - Cees Smit
- Department of Clinical EpidemiologyLeiden University Medical CenterLeidenThe Netherlands
| | - Alok Srivastava
- Department of HaematologyChristian Medical CollegeVelloreIndia
| | - Fred van Eenennaam
- The Decision GroupAmsterdamThe Netherlands
- Erasmus School of Accounting & AssuranceErasmus UniversityRotterdamThe Netherlands
| | - Johanna G. van der Bom
- Department of Clinical EpidemiologyLeiden University Medical CenterLeidenThe Netherlands
- Center for Clinical Transfusion ResearchSanquin/LUMCLeidenThe Netherlands
| | - Samantha C. Gouw
- Department of Clinical EpidemiologyLeiden University Medical CenterLeidenThe Netherlands
- Department of Pediatric HematologyAmsterdam University Medical CenterEmma Children's HospitalUniversity of AmsterdamAmsterdamThe Netherlands
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22
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Aquino CC, Borg Debono V, Germini F, Pete D, Kempton CL, Young G, Sidonio R, Croteau SE, Dunn AL, Key NS, Iorio A. Outcomes for studies assessing the efficacy of hemostatic therapies in persons with congenital bleeding disorders. Haemophilia 2021; 27:211-220. [PMID: 33550614 DOI: 10.1111/hae.14247] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 12/17/2020] [Accepted: 12/21/2020] [Indexed: 01/19/2023]
Abstract
INTRODUCTION Management strategies and hemostatic treatments to achieve control of bleeding are relevant across many disease areas. Identification of primary outcomes for studies assessing hemostatic intervention was the objective of a National Heart, Lung and Blood Institute (NHLBI) sponsored multidisciplinary initiative. The aim of this report is to summarize the evidence reviewed, and the outcomes identified by the subgroup tasked to assess outcomes for inherited bleeding disorders. METHODS The subgroup decided to focus on haemophilia, the prototypal congenital bleeding disorder and the one with the largest available body of evidence. MEDLINE, EMBASE and PsycINFO, The Cochrane Review, CINAHL, and Web of Science were searched for systematic and narrative reviews on outcomes used in haemophilia clinical trials. Three different clinical goals were identified as typical objectives of future research. RESULTS Out of 1322 unique citations, 24 reviews published in the period 2002-2019 were included. We identified 113 outcome measures, categorized in 6 domains: health-related quality of life (HRQoL), comorbidities and mortality, overall physical functioning and participation, bleeding and hemostasis, joint health, and costs and resource use. Three different clinical goals were identified as typical objectives of future research: Episodic 'on demand' replacement therapy, prevention of bleeding (Prophylaxis), and long-term and overall impact of bleeding. For each of these scenarios, specific outcomes were recommended. CONCLUSIONS Primary outcomes for clinical trials assessing the efficacy of hemostatic treatment in achieving control, prevention and limiting long-term consequences of bleeding in inherited bleeding disorders are suggested, and their strength and limitations discussed.
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Affiliation(s)
- Camila C Aquino
- Health Information Research Unit, Department of Health Research Methods, Evidence, and Impact (HEI), McMaster University, Hamilton, ON, Canada.,Department of Clinical Neurosciences, University of Calgary, Calgary, Canada.,Hotchkiss Brain Institute, Calgary, Canada
| | - Victoria Borg Debono
- Health Information Research Unit, Department of Health Research Methods, Evidence, and Impact (HEI), McMaster University, Hamilton, ON, Canada.,Department of Anesthesiology, McMaster University, Hamilton, ON, Canada.,Michael G. DeGroote Institute for Pain Research and Care, McMaster University, Hamilton, ON, Canada
| | - Federico Germini
- Health Information Research Unit, Department of Health Research Methods, Evidence, and Impact (HEI), McMaster University, Hamilton, ON, Canada.,Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Drashti Pete
- Health Information Research Unit, Department of Health Research Methods, Evidence, and Impact (HEI), McMaster University, Hamilton, ON, Canada
| | - Christine L Kempton
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA, USA.,Hemophilia of Georgia Center for Bleeding & Clotting Disorders of Emory, Emory University School of Medicine, Atlanta, GA, USA
| | - Guy Young
- Hemostasis and Thrombosis Center, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA, USA
| | - Robert Sidonio
- Department of Pediatrics, Emory University School of Medicine, Aflac Cancer and Blood Disorders, Atlanta, GA, USA
| | - Stacy E Croteau
- Boston Children's Hospital, Boston Hemophilia Center, Harvard Medical School, Boston, MA, USA
| | - Amy L Dunn
- Hemophilia Treatment Center, Nationwide Children's Hospital and The Ohio State University College of Medicine, Columbus, OH, USA
| | - Nigel S Key
- Division of Hematology and Blood Research Center, University of North Carolina School of Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Alfonso Iorio
- Health Information Research Unit, Department of Health Research Methods, Evidence, and Impact (HEI), McMaster University, Hamilton, ON, Canada.,Department of Medicine, McMaster University, Hamilton, ON, Canada
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23
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Manco-Johnson MJ, Warren BB, Buckner TW, Funk SM, Wang M. Outcome measures in Haemophilia: Beyond ABR (Annualized Bleeding Rate). Haemophilia 2021; 27 Suppl 3:87-95. [PMID: 33398908 DOI: 10.1111/hae.14099] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 06/15/2020] [Indexed: 12/19/2022]
Abstract
Options for management of haemophilia are increasing rapidly with completely novel therapeutic approaches that cannot be compared using traditional factor assays. In addition, as prophylaxis regimens have improved, bleeding rates have decreased, and consequently, it is difficult to show an impact of novel therapies on rates of spontaneous bleeding. There is currently an urgent need for a panel of outcome measures to compare therapies that are dissimilar in many essential ways. Conventional objective outcome measures including joint physical examination and joint imaging continue to hold a central importance. Factor assays are essential for evaluation of products derived from native factor genes, but are not applicable to some extended half-life factors or non-factor bypassing agents. Global assays including thrombin generation and chromogenic assays of factor X activation are under investigation for their usefulness in haemophilia assessment. Bleeding rate is a conventional subjective patient-reported outcome that, while decreasing in frequency, is indispensable as an outcome given that the primary manifestation of haemophilia is bleeding. Other patient-reported outcomes such as pain intensity and interference, health-related quality of life and activities and participation are increasingly important to distinguish superior outcomes in comparative trials. This review of outcome measures for haemophilia presents examples of existing outcome measures with an emphasis on their strengths and limitations.
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Affiliation(s)
- Marilyn J Manco-Johnson
- Department of Pediatrics, Hemophilia & Thrombosis Center, University of Colorado and Childrens Hospital Colorado, Aurora, CO, USA
| | - Beth Boulden Warren
- Department of Pediatrics, Hemophilia & Thrombosis Center, University of Colorado and Childrens Hospital Colorado, Aurora, CO, USA
| | - Tyler W Buckner
- Departments of Medicine and Pediatrics, Hemophilia & Thrombosis Center, University of Colorado and UCHealth, Aurora, CO, USA
| | - Sharon M Funk
- Department of Pediatrics, Hemophilia & Thrombosis Center, University of Colorado and Childrens Hospital Colorado, Aurora, CO, USA
| | - Michael Wang
- Department of Pediatrics, Hemophilia & Thrombosis Center, University of Colorado and Childrens Hospital Colorado, Aurora, CO, USA
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24
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Pharmacoeconomic Analysis of Hemophilia Care in Romania. Processes (Basel) 2020. [DOI: 10.3390/pr8121676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Hemophilia, a congenital X linked disease, has the serious burden of bleeding, requiring life-long replacement with coagulation factors (CF). In the present day, there is a continuously improving treatment for this condition. Objective: Our observational, cross-sectional study aims at finding out whether a prophylactic replacement with CF is affordable from the point of view of its cost-effectiveness in our country. Material and methods: A cohort of 122 persons with hemophilia were included in this patient-reported outcome survey, and they answered a questionnaire consisting of 56 items, focused on 4 domains—socio-demographic, medical, quality of health/life and cost/cost-effectiveness. Results and discussion: The markers for quality of health/life were correlated with the direct and indirect costs of care, comparing subgroup 1 of patients with prophylactic vs. subgroup 2 with on-demand replacement. Based on the incremental quality adjusted life years and the incremental costs, we calculated the incremental cost-effectiveness ratio (ICER) proving that prophylaxis is more cost-effective than on-demand replacement on a long time basis. Conclusions: The ICER is a threshold recommending the reimbursement of costs for a life-long prophylactic replacement in our country.
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25
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Hay CRM, Shima M, Makris M, Jiménez-Yuste V, Oldenburg J, Fischer K, Iorio A, Skinner MW, Santagostino E, von Mackensen S, Kessler CM. Challenges and key lessons from the design and implementation of an international haemophilia registry supported by a pharmaceutical company. Haemophilia 2020; 26:966-974. [PMID: 33094894 PMCID: PMC7894355 DOI: 10.1111/hae.14144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 05/19/2020] [Accepted: 08/13/2020] [Indexed: 01/16/2023]
Abstract
INTRODUCTION Real-world data are lacking regarding the relationship between prospectively collected patient-reported outcomes (PROs), clinical outcomes and treatment in people with haemophilia (PWH). The Expanding Communications on Hemophilia A Outcomes (ECHO) registry was designed to address this data gap, but a range of difficulties led to early study closure. AIM To describe the challenges faced and lessons learned from implementing a multinational haemophilia registry. METHODS The Expanding Communications on Hemophilia A Outcomes was planned as a five-year observational cohort study to collect data from 2000 patients in nine countries. Based on direct observations, feedback from patients enrolled in ECHO, challenges of the study design and input from study-sponsor representatives, the ECHO Steering Committee systematically identified the challenges faced and developed recommendations for overcoming or avoiding them in future studies. RESULTS The study closed after two years because few countries were activated and patient recruitment was low. This was related to multiple challenges including delayed implementation, stringent pharmacovigilance requirements, objections of investigators and patients to the burden of multiple PROs, data collection issues, lack of resources at study sites, little engagement of patients and competing clinical trials, which further limited recruitment. At study closure, 269 patients had been enrolled in four of nine participating countries. CONCLUSIONS Researchers planning studies similar to ECHO may want to consider the barriers identified in this global registry of PWH and suggestions to mitigate these limitations, such as greater patient involvement in design and analysis, clearer assessment and understanding of local infrastructure and potential changes to the administration of the study.
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Affiliation(s)
- Charles R M Hay
- Manchester University Department of Haematology, Manchester, UK
| | | | - Michael Makris
- Department of Infection, Immunity, and Cardiovascular Disease, University of Sheffield, Sheffield, UK
| | | | - Johannes Oldenburg
- Department of Experimental Haematology and Transfusion Medicine, University Clinic Bonn, Bonn, Germany
| | - Kathelijn Fischer
- van Creveldkliniek, University Medical Center Utrecht, Utrecht, Netherlands
| | - Alfonso Iorio
- Department of Health Research Methods, Evidence and Impact, Department of Medicine, McMaster University, Hamilton, ON, Canada.,Clinical Epidemiology of Congenital Bleeding Disorders, McMaster University, Hamilton, ON, Canada
| | - Mark W Skinner
- Department of Health Research Methods, Evidence and Impact, Department of Medicine, McMaster University, Hamilton, ON, Canada.,Institute for Policy Advancement, Ltd, Washington, DC, USA
| | | | - Sylvia von Mackensen
- Department of Medical Psychology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
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26
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Chai-Adisaksopha C, Noone D, Curtis R, Frick N, Nichol MB, Germini F, O'Mahony B, Page D, Stonebraker JS, Skinner MW, Iorio A. Non-severe haemophilia: Is it benign? - Insights from the PROBE study. Haemophilia 2020; 27 Suppl 1:17-24. [PMID: 32870546 DOI: 10.1111/hae.14105] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 06/15/2020] [Accepted: 06/22/2020] [Indexed: 12/01/2022]
Abstract
INTRODUCTION There are limited data on the impact of haemophilia on health status and health-related quality of life (HRQL) in people with non-severe (mild and moderate) haemophilia. AIM To evaluate the health status of people living with mild or moderate haemophilia. METHODS Data on respondents with no bleeding disorder (NoBD), mild and moderate haemophilia patients were drawn from the PROBE study. Respondents were enrolled using network patient organizations. This analysis was performed as a cross-sectional study. Primary outcomes were reported bleeding, acute and chronic pain, activities of daily living and HRQL. RESULTS A total of 862 respondents with NoBD (n = 173), mild (n = 102) and moderate (n = 134) haemophilia were eligible, with a median age of 33, 42 and 43, respectively. In relation to haemophilia-related sequalae, 53% of male and 29% of female patients with mild and 83% of males with moderate haemophilia had more than 2-3 bleeds in the last 12 months. Reporting of acute and chronic pain is less in those with NoBD compared to the mild and moderate cohorts for both genders. Multivariate analysis demonstrates significant reductions in quality of life using VAS, EQ-5D-5L and PROBE for males with mild and moderate haemophilia (P ≤ .001) with only PROBE indicating a significant reduction for females with mild (P = .002). CONCLUSION People affected by mild or moderate haemophilia report a significant HRQL impact due to haemophilia-related bleeding. Future research is needed to identify the optimal care management of patients with mild and moderate haemophilia.
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Affiliation(s)
- Chatree Chai-Adisaksopha
- Department of Medicine, McMaster University, Hamilton, ON, Canada.,Department of Internal Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Declan Noone
- Health Decisions Consultants, Dublin, Ireland.,European Haemophilia Consortium, Brussels, Belgium
| | | | - Neil Frick
- National Hemophilia Foundation, New York, NY, USA
| | - Michael B Nichol
- Sol Price School of Public Policy, University of Southern California, Los Angeles, CA, USA
| | - Federico Germini
- Department of Medicine, McMaster University, Hamilton, ON, Canada.,Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| | - Brian O'Mahony
- Trinity College Dublin, Dublin, Ireland.,Irish Haemophilia Society, Dublin, Ireland
| | - David Page
- Canadian Hemophilia Society, Montreal, QC, Canada
| | | | - Mark W Skinner
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada.,Institute for Policy Advancement Ltd, Washington, DC, USA
| | - Alfonso Iorio
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada.,McMaster-Bayer Endowed Research Chair in Clinical Epidemiology of Congenital Bleeding Disorders, Department of Medicine, McMaster, Hamilton, ON, Canada
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27
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Neuner B, von Mackensen S, Kiesau B, Krampe H, McCarthy WJ, Reinke S, Kowalski D, Shneyder M, Clausnizer H, Rocke A, Junker R, Nowak-Göttl U. Cross-Sectional and Longitudinal Construct Validity of the Generic KINDL-A(dult)B(rief) Questionnaire in Adults with Thrombophilia or with Hereditary and Acquired Bleeding Disorders. Acta Haematol 2020; 144:166-175. [PMID: 32506056 DOI: 10.1159/000507602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 03/30/2020] [Indexed: 01/19/2023]
Abstract
BACKGROUND/AIMS The newly adapted generic KINDL-A(dult)B(rief) questionnaire showed satisfactory cross-sectional psychometric properties in adults with bleeding disorders or thrombophilia. This investigation aimed to evaluate its cross-sectional and longitudinal construct validity. METHODS After ethical committee approval and written informed consent, 335 patients (mean age 51.8 ± 16.6 years, 60% women) with either predominant thrombophilia (n = 260) or predominant bleeding disorders (n = 75) participated. At baseline, patients answered the KINDL-AB, the MOS 36-item Short-Form Health Survey (SF-36), and the EQ-5D-3L. A subgroup of 117 patients repeated the questionnaire after a median follow-up of 2.6 years (range: 0.4-3.5). A priori hypotheses were evaluated regarding convergent correlations between KINDL-AB overall well-being and specific subscales, EQ-5D-3L index values (EQ-IV), EQ-5D visual analog scale (EQ-VAS), and SF-36 subscales. RESULTS Contrary to hypothesis, baseline correlations between the KINDL-AB and EQ-IV/EQ-VAS were all moderate while, as hypothesized, several KINDL-AB subscales and SF-36 subscales correlated strongly. At follow-up, no significant changes in all three instruments occurred. Correlations between instruments over the follow-up were mostly moderate and partially strong. Contrary to hypothesis but consistent with no significant changes in health-related quality of life, convergent correlations between changes in KINDL-AB overall well-being, physical and psychological well-being, and EQ-IV/EQ-VAS were all weak. CONCLUSIONS While repeated measures of KINDL-AB showed moderate to strong correlations, changes in KINDL-AB overall well-being and subscales correlated more weakly than expected with changes involving two established instruments of generic health status.
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Affiliation(s)
- Bruno Neuner
- Department of Anesthesiology and Intensive Care Medicine, Charité - Universitätsmedizin Berlin, Campus Charité Mitte and Campus Virchow-Klinikum, Berlin, Germany
| | - Sylvia von Mackensen
- Department of Medical Psychology, Center for Psychosocial Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Bettina Kiesau
- Institute for Clinical Chemistry and Coagulation Center, University Hospital Schleswig Holstein, Lübeck/Kiel, Germany
| | - Henning Krampe
- Department of Anesthesiology and Intensive Care Medicine, Charité - Universitätsmedizin Berlin, Campus Charité Mitte and Campus Virchow-Klinikum, Berlin, Germany
| | - William J McCarthy
- Fielding School of Public Health and Jonsson Comprehensive Cancer Center, Center for Cancer Prevention and Control Research, University of California Los Angeles (UCLA), Los Angeles, California, USA
| | - Sarah Reinke
- Institute for Clinical Chemistry and Coagulation Center, University Hospital Schleswig Holstein, Lübeck/Kiel, Germany
- Department of Pediatric Oncology and Hematology, University Childrens' Hospital, Münster, Germany
| | - Dorothee Kowalski
- Institute for Clinical Chemistry and Coagulation Center, University Hospital Schleswig Holstein, Lübeck/Kiel, Germany
| | - Maria Shneyder
- Institute for Clinical Chemistry and Coagulation Center, University Hospital Schleswig Holstein, Lübeck/Kiel, Germany
| | - Hartmut Clausnizer
- Institute for Clinical Chemistry and Coagulation Center, University Hospital Schleswig Holstein, Lübeck/Kiel, Germany
| | - Angela Rocke
- Institute for Clinical Chemistry and Coagulation Center, University Hospital Schleswig Holstein, Lübeck/Kiel, Germany
| | - Ralf Junker
- Institute for Clinical Chemistry and Coagulation Center, University Hospital Schleswig Holstein, Lübeck/Kiel, Germany
| | - Ulrike Nowak-Göttl
- Institute for Clinical Chemistry and Coagulation Center, University Hospital Schleswig Holstein, Lübeck/Kiel, Germany,
- Department of Pediatric Oncology and Hematology, University Childrens' Hospital, Münster, Germany,
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28
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Dover S, Blanchette VS, Srivastava A, Fischer K, Abad A, Feldman BM. Clinical outcomes in hemophilia: Towards development of a core set of standardized outcome measures for research. Res Pract Thromb Haemost 2020; 4:652-658. [PMID: 32548565 PMCID: PMC7292657 DOI: 10.1002/rth2.12331] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/14/2020] [Accepted: 02/24/2020] [Indexed: 01/19/2023] Open
Abstract
INTRODUCTION A lack of uniformity in the choice of outcome measurement in hemophilia care and research has led to studies with incomparable results. We identified a need to define core outcome measures for use in research and clinical care of persons with hemophilia. OBJECTIVE To move toward a core set of outcome measures for the assessment of persons with hemophilia in research and practice. METHODS A modified nominal groups process was conducted with an international group of hemophilia experts, including persons with hemophilia as follows. Step 1: item generation for all potential outcome measures. Step 2: survey where respondents voted on the relative importance and usefulness of each item. Steps 3/4: 2-day meeting where attendees voted for items they valued, followed by open discussion and a second round of voting. Step 5: survey where respondents selected their top five items from those with >50% agreement at the meeting. RESULTS The highest ranked items for the pediatric core set (% agreement) are treatment satisfaction (92.7%), joint health (83.3%), a measure of access to treatment (82.5%), a measure of treatment adherence (72.5%), and generic performance based physical function (72.1%). The highest ranked items for the adult core set (% agreement) are total bleeding events (88.1%), EuroQol five dimensions (85.4%), treatment adherence (82.1%), joint health (79.1%), and number/location of bleeds per unit time (78.6%). CONCLUSION This process generated a list of preferred outcome measures to consider for assessment in persons with hemophilia. This information now requires refinement to define optimal core sets for use in different clinical/research contexts.
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Affiliation(s)
- Saunya Dover
- Child Health Evaluative SciencesThe Hospital for Sick ChildrenTorontoONCanada
| | - Victor S. Blanchette
- Child Health Evaluative SciencesThe Hospital for Sick ChildrenTorontoONCanada
- Division of Hematology/OncologyThe Hospital for Sick ChildrenTorontoONCanada
- Department of PediatricsUniversity of TorontoTorontoONCanada
| | - Alok Srivastava
- Department of HematologyChristian Medical CollegeVelloreIndia
| | - Kathelijn Fischer
- Van CreveldkliniekUniversity Medical Center UtrechtUtrechtThe Netherlands
| | - Audrey Abad
- Child Health Evaluative SciencesThe Hospital for Sick ChildrenTorontoONCanada
| | - Brian M. Feldman
- Child Health Evaluative SciencesThe Hospital for Sick ChildrenTorontoONCanada
- Department of PediatricsUniversity of TorontoTorontoONCanada
- Institute of Health PolicyManagement & Evaluationthe Dalla Lana School of Public HealthUniversity of TorontoTorontoONCanada
- Division of RheumatologyThe Hospital for Sick ChildrenTorontoONCanada
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29
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Lancaster GA, Thabane L. Guidelines for reporting non-randomised pilot and feasibility studies. Pilot Feasibility Stud 2019; 5:114. [PMID: 31608150 PMCID: PMC6778655 DOI: 10.1186/s40814-019-0499-1] [Citation(s) in RCA: 165] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 09/10/2019] [Indexed: 01/08/2023] Open
Abstract
As the number of submissions to Pilot and Feasibility Studies increases, there is a need for good quality reporting guidelines to help researchers tailor their reports in a way that is consistent and helpful to other readers. The publication in 2016 of the CONSORT extension to pilot and feasibility trials filled a much-needed gap, but there still remains some uncertainty as to how to report pilot and feasibility studies that are not randomised. This editorial aims to provide some general guidance on how to report the most common types of non-randomised pilot and feasibility studies that are submitted to the journal. We recommend using the CONSORT extension to pilot and feasibility trials as the main reference document—it includes detailed elaboration and explanation of each item, and in most cases, simple adaptation, or non-use of items that are not applicable, will suffice. Several checklists found on the Equator website may provide helpful supplementary guidance, when used alongside the CONSORT extension, and we give some examples.
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Affiliation(s)
- Gillian A Lancaster
- School of Primary, Social and Community Care, Keele University, Newcastle-under-Lyme, UK
| | - Lehana Thabane
- School of Primary, Social and Community Care, Keele University, Newcastle-under-Lyme, UK
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30
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Konkle BA, Recht M. The national blueprint for 21st century data and specimen collection and observational cohort studies: NHLBI State of the Science Workshop on factor VIII inhibitors. Haemophilia 2019; 25:590-594. [PMID: 31329362 DOI: 10.1111/hae.13772] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 03/30/2019] [Accepted: 04/22/2019] [Indexed: 01/19/2023]
Abstract
INTRODUCTION A devastating complication of hemophilia A, the congenital deficiency of coagulation factor VIII (FVIII), therapy is the development of inhibitory antibodies (inhibitors) to infused FVIII concentrate affecting up to 30% of people with the most severe form of the disease. Although the number of patients affected by hemophilia A with inhibitors is small, the physical, emotional, financial, and public health impact is overwhelming to the patient, family, and medical system. To best serve this patient population, as well as enhance knowledge around this complication, a robust data and specimen collection strategy must be designed. AIM Working Group 2 (WG2) of the National Heart, Lung, and Blood Institute (NHLBI)- sponsored State of the Science (SOS) workshop on factor VIII inhibitors in 2018 was tasked with developing recommendations around the conduct of research, modeling efficient data and specimen collection, developing infrastructure support, establishing partnerships with all stakeholders, including international collaborators, addressing ethical issues, maximizing patient/family engagement and promoting training opportunities. METHODS A group with diverse expertise was assembled who reviewed the current state of data and specimen collection in patients with hemophilia and developed recommendations for the future. RESULTS Our results were presented at the SOS Workshop where additional feedback was gained. CONCLUSION Our charge and recommendations are summarized in this manuscript.
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Affiliation(s)
- Barbara A Konkle
- Bloodworks Northwest, Seattle, Washington.,Department of Medicine, University of Washington, Seattle, Washington
| | - Michael Recht
- The Hemophilia Center, Oregon Health & Science University, Portland, Oregon
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31
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Miesbach W, O'Mahony B, Key NS, Makris M. How to discuss gene therapy for haemophilia? A patient and physician perspective. Haemophilia 2019; 25:545-557. [PMID: 31115117 PMCID: PMC6852207 DOI: 10.1111/hae.13769] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 04/01/2019] [Accepted: 04/01/2019] [Indexed: 01/19/2023]
Abstract
Gene therapy has the potential to revolutionise treatment for patients with haemophilia and is close to entering clinical practice. While factor concentrates have improved outcomes, individuals still face a lifetime of injections, pain, progressive joint damage, the potential for inhibitor development and impaired quality of life. Recently published studies in adeno‐associated viral (AAV) vector‐mediated gene therapy have demonstrated improvement in endogenous factor levels over sustained periods, significant reduction in annualised bleed rates, lower exogenous factor usage and thus far a positive safety profile. In making the shared decision to proceed with gene therapy for haemophilia, physicians should make it clear that research is ongoing and that there are remaining evidence gaps, such as long‐term safety profiles and duration of treatment effect. The eligibility criteria for gene therapy trials mean that key patient groups may be excluded, eg children/adolescents, those with liver or kidney dysfunction and those with a prior history of factor inhibitors or pre‐existing neutralising AAV antibodies. Gene therapy offers a life‐changing opportunity for patients to reduce their bleeding risk while also reducing or abrogating the need for exogenous factor administration. Given the expanding evidence base, both physicians and patients will need sources of clear and reliable information to be able to discuss and judge the risks and benefits of treatment.
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Affiliation(s)
- Wolfgang Miesbach
- Department of Haemostaseology and Haemophilia Centre, Medical Clinic 2, Institute of Transfusion Medicine, University Hospital Frankfurt, Frankfurt, Germany
| | - Brian O'Mahony
- Chief Executive, Irish Haemophilia Society, Dublin, Ireland.,Trinity College, Dublin, Ireland
| | - Nigel S Key
- Division of Hematology/Oncology, Department of Medicine, University of North Carolina, Chapel Hill, North Carolina
| | - Mike Makris
- Sheffield Haemophilia and Thrombosis Centre, Royal Hallamshire Hospital, Sheffield, UK.,Department of Infection Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK
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32
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Konkle BA, Skinner M, Iorio A. Hemophilia trials in the twenty-first century: Defining patient important outcomes. Res Pract Thromb Haemost 2019; 3:184-192. [PMID: 31011702 PMCID: PMC6462740 DOI: 10.1002/rth2.12195] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 02/01/2019] [Indexed: 01/19/2023] Open
Abstract
Treatment for hemophilia has advanced dramatically over the past 5 decades. Success of prophylactic therapy in preventing bleeding and decreasing associated complications has established a new standard of care. However, with the advent of gene therapy and treatments that effectively mimic sustained coagulation factor replacement, outcome measures that worked well for assessing factor replacement therapies in past clinical trials need to be reassessed. In addition, while therapies have advanced, so has the science of outcome assessment, including recognition of the importance of patient important and patient reported outcomes. This manuscript reviews strengths and limitations of outcome measures used in hemophilia from both a provider and patient perspective.
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Affiliation(s)
- Barbara A. Konkle
- Bloodworks NorthwestSeattleWashington
- Department of MedicineUniversity of WashingtonSeattleWashington
| | - Mark Skinner
- Institute for Policy Advancement, Ltd.WashingtonDistrict of Columbia
- Department of Health Resource Methods, Evidence, and ImpactMcMaster UniversityHamiltonCanada
| | - Alfonso Iorio
- Department of Health Resource Methods, Evidence, and ImpactMcMaster UniversityHamiltonCanada
- Department of MedicineMcMaster UniversityHamiltonCanada
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33
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Chai-Adisaksopha C, Skinner MW, Curtis R, Frick N, Nichol MB, Noone D, O'Mahony B, Page D, Stonebraker J, Thabane L, Crowther MA, Iorio A. Exploring regional variations in the cross-cultural, international implementation of the Patient Reported Outcomes Burdens and Experience (PROBE) study. Haemophilia 2019; 25:365-372. [PMID: 30861270 DOI: 10.1111/hae.13703] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 09/22/2018] [Accepted: 01/23/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND The Patient Reported Outcomes Burdens and Experience (PROBE) study has developed and validated the PROBE questionnaire for assessing patient-reported outcomes in people with haemophilia and participants without bleeding disorders. OBJECTIVE To explore the regional variations in the international implementation of the PROBE questionnaire. METHODS Data were collected from participants in four regions (Western Pacific, South America, North America and Europe). Participants were able to choose English or translated versions of the PROBE questionnaire into their first language. We used analysis of variance methods and multivariable regression to determine the relative contribution of the variance explained by region controlling for haemophilia diagnosis, age group and levels of educations. We also explored interactions between region and the other components. RESULTS We used 862 questionnaires from 14 countries. Mean age of participants was 40.03 years (standard deviation 13.89), and 73.67% were male. After adjusting, region contributed 0.44%-7.98% of the variance component in subitem scores and 0.26% in the PROBE score. Years of education contributed 0.34% in the PROBE score. Age and haemophilia diagnosis contributed 3.42% and 22.42% of the PROBE score. CONCLUSIONS The results demonstrate that the PROBE questionnaire is valid to implement for assessing health status among patients with haemophilia and participants without bleeding disorders across regions.
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Affiliation(s)
- Chatree Chai-Adisaksopha
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada.,Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Mark W Skinner
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada.,Institute for Policy Advancement Ltd, Washington, District of Columbia
| | | | - Neil Frick
- National Hemophilia Foundation, New York, New York
| | - Michael B Nichol
- Sol Price School of Public Policy, University of Southern California, Los Angeles, California
| | | | - Brian O'Mahony
- Irish Haemophilia Society, Dublin, Ireland.,Trinity College Dublin, Dublin, Ireland
| | - David Page
- Canadian Hemophilia Society, Montreal, Quebec, Canada
| | - Jeffrey Stonebraker
- Poole College of Management, North Carolina State University, Raleigh, North Carolina
| | - Lehana Thabane
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada.,Biostatistics Unit, St Joseph's Healthcare, Hamilton, Ontario, Canada
| | - Mark A Crowther
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada.,Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Alfonso Iorio
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada.,Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
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Chai-Adisaksopha C, Skinner MW, Curtis R, Frick N, Nichol MB, Noone D, O'Mahony B, Page D, Stonebraker J, Thabane L, Crowther M, Iorio A. Psychometric properties of the Patient Reported Outcomes, Burdens and Experiences (PROBE) questionnaire. BMJ Open 2018; 8:e021900. [PMID: 30093520 PMCID: PMC6089314 DOI: 10.1136/bmjopen-2018-021900] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
OBJECTIVE To assess the psychometric properties of the Patient Reported Outcomes, Burdens and Experiences (PROBE) questionnaire. METHODS This study was a cross-sectional, multinational study. Participants were enrolled if they were more than 10 years old and people with haemophilia A or B or people without a bleeding disorder. Participants were invited through non-governmental patient organisations in 21 countries between 01/27/2016 and 02/23/2017. The following psychometric properties: missing data, floor and ceiling effects, exploratory factor analysis and internal consistency reliability were examined. A PROBE Score was derived and assessed for its convergent and known groups validity. RESULTS The study analysed the data on 916 participants with median age of 37.0 (IQR 27.0 to 48.0) years, 74.8% male. In the domain assessing patient-reported outcomes (PROs), more than 15% of participants presented a ceiling effect for all items but two, and a floor effect for one item. Factor analysis identified three factors explaining the majority of the variance. Cronbach's alpha coefficient indicated good internal consistency reliability (0.84). PROBE items showed moderate to strong correlations with corresponding EuroQol five dimension 5-level instrument (EQ-5D-5L) domains. The PROBE Score has a strong correlation (r=0.67) with EQ-5D-5L utility index score. The PROBE Score has a known groups validity among various groups. CONCLUSIONS The results of this study suggest that PROBE is a valid questionnaire for evaluating PROs in people with haemophilia as well as control population. The known-group property of PROBE will allow its use in future clinical trials, longitudinal studies, health technology assessment studies, routine clinical care or registries. Additional studies are needed to test responsiveness and sensitivity to change. TRIAL REGISTRATION NUMBER NCT02439710; Results.
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Affiliation(s)
- Chatree Chai-Adisaksopha
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Mark W Skinner
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
- Institute for Policy Advancement Ltd, Washington, District of Columbia, USA
| | | | - Neil Frick
- Research and Medical Information, National Hemophilia Foundation, New York City, New York, USA
| | - Michael B Nichol
- Sol Price School of Public Policy, University of Southern California, Los Angeles, California, USA
| | | | - Brian O'Mahony
- Irish Haemophilia Society, Dublin, Ireland
- Trinity College Dublin, Dublin, Ireland
| | - David Page
- Canadian Hemophilia Society, Montreal, Quebec, Canada
| | - Jeffrey Stonebraker
- Poole College of Management, North Carolina State University, Raleigh, North Carolina, USA
| | - Lehana Thabane
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
- Biostatistics Unit, St Joseph's Healthcare, Hamilton, Ontario, Canada
| | - Mark Crowther
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Alfonso Iorio
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
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