1
|
Foppen W, van Leeuwen FHP, Timmer MA, Fischer K. The relevance of MRI findings in joints of persons with haemophilia: Insights from the last decade. Haemophilia 2024. [PMID: 38812241 DOI: 10.1111/hae.15058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 04/29/2024] [Accepted: 05/20/2024] [Indexed: 05/31/2024]
Affiliation(s)
- Wouter Foppen
- Department of Radiology and Nuclear Medicine, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Flora H P van Leeuwen
- Department of Radiology and Nuclear Medicine, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Merel A Timmer
- Center for Benign Hematology, Thrombosis and Haemostasis, Van Creveldkliniek, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Kathelijn Fischer
- Center for Benign Hematology, Thrombosis and Haemostasis, Van Creveldkliniek, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| |
Collapse
|
2
|
Morfini M, Agnelli Giacchiello J, Baldacci E, Carulli C, Castaman G, Giuffrida AC, Malcangi G, Rocino A, Siragusa S, Zanon E. Managing Relevant Clinical Conditions of Hemophilia A/B Patients. Hematol Rep 2023; 15:384-397. [PMID: 37367088 DOI: 10.3390/hematolrep15020039] [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: 02/09/2023] [Revised: 04/21/2023] [Accepted: 05/31/2023] [Indexed: 06/28/2023] Open
Abstract
The Medical Directors of nine Italian Hemophilia Centers reviewed and discussed the key issues concerning the replacement therapy of hemophilia patients during a one-day consensus conference held in Rome one year ago. Particular attention was paid to the replacement therapy needed for surgery using continuous infusion (CI) versus bolus injection (BI) of standard and extended half-life Factor VIII (FVIII) concentrates in severe hemophilia A patients. Among the side effects, the risk of development of neutralizing antibodies (inhibitors) and thromboembolic complications was addressed. The specific needs of mild hemophilia A patients were described, as well as the usage of bypassing agents to treat patients with high-responding inhibitors. Young hemophilia A patients may take significant advantages from primary prophylaxis three times or twice weekly, even with standard half-life (SHL) rFVIII concentrates. Patients affected by severe hemophilia B probably have a less severe clinical phenotype than severe hemophilia A patients, and in about 30% of cases may undergo weekly prophylaxis with an rFIX SHL concentrate. The prevalence of missense mutations in 55% of severe hemophilia B patients allows the synthesis of a partially changed FIX molecule that can play some hemostatic role at the level of endothelial cells or the subendothelial matrix. The flow back of infused rFIX from the extravascular to the plasma compartment allows a very long half-life of about 30 h in some hemophilia B patients. Once weekly, prophylaxis can assure a superior quality of life in a large severe or moderate hemophilia B population. According to the Italian registry of surgery, hemophilia B patients undergo joint replacement by arthroplasty less frequently than hemophilia A patients. Finally, the relationships between FVIII/IX genotypes and the pharmacokinetics of clotting factor concentrates have been investigated.
Collapse
Affiliation(s)
- Massimo Morfini
- Italian Association of Haemophilia Centers (AICE), 21121 Milan, Italy
| | - Jacopo Agnelli Giacchiello
- Hemostasis and Thrombosis Center, Azienda Ospedaliera SS Antonio e Biagio e Cesare Arrigo, 15121 Alessandria, Italy
| | - Erminia Baldacci
- Haematology, "Umberto I" Policlinico, Department of Translational and Precision Medicine, Sapienza University of Rome, 00118 Rome, Italy
| | - Christian Carulli
- Department of Orthopaedic Surgery, Orthopaedic Clinic, University of Florence, 50121 Florence, Italy
| | - Giancarlo Castaman
- Department of Oncology, Center for Bleeding Disorders and Coagulation, Careggi University Hospital, 50121 Florence, Italy
| | | | - Giuseppe Malcangi
- UOSD Centro Emofilia e Trombosi, Azienda Ospedaliero Universitaria Policlinico di Bari, 70121 Bari, Italy
| | - Angiola Rocino
- Haemophilia and Thrombosis Centre, Haematology, S.M. di Loreto Nuovo Hospital, 80121 Naples, Italy
| | - Sergio Siragusa
- Department PROMISE, University of Palermo, 90121 Palermo, Italy
| | - Ezio Zanon
- Haemophilia Centre, General Medicine, Padua University Hospital, 35121 Padua, Italy
| |
Collapse
|
3
|
van Leeuwen FHP, van Bergen EPD, Timmer MA, van Vulpen LFD, Schutgens REG, de Jong PA, Fischer K, Foppen W. Magnetic resonance imaging evidence for subclinical joint bleeding in a Dutch population of people with severe hemophilia on prophylaxis. J Thromb Haemost 2023; 21:1156-1163. [PMID: 36758725 DOI: 10.1016/j.jtha.2023.01.035] [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: 10/18/2022] [Revised: 01/31/2023] [Accepted: 01/31/2023] [Indexed: 02/11/2023]
Abstract
BACKGROUND Previous studies suggest that subclinical bleeding occurs in persons with hemophilia. OBJECTIVES The aim of this study was to investigate whether patients with lifelong access to prophylaxis showed signs of previous subclinical bleeding on magnetic resonance imaging (MRI) in joints without a history of joint bleeding. METHODS This single-center cross-sectional study included persons with severe hemophilia A on prophylaxis, aged 16 to 33 years, with lifetime bleeding records available. Per participant, 1 index joint without a history of joint bleeding was evaluated with 3-Tesla MRI, including hemosiderin sensitive sequences. MRI scans were reviewed according to the International Prophylaxis Study Group (IPSG) additive MRI scale (range, 0-17/joint). Hemosiderin deposits with/without synovial hypertrophy were considered signs of previous subclinical bleeding. Additionally, physical examination was performed, followed by ultrasound examination according to the Hemophilia Early Arthropathy Detection with Ultrasound protocol. RESULTS In 43 patients with a median age of 23.5 years, 43 joints (16 elbows, 13 knees, 14 ankles) without reported bleeds were evaluated with MRI. The median IPSG MRI score was 1 (range, 0-9). Signs of previous subclinical bleeding were observed in 7 of 43 joints (16%; 95% CI, 7-30): 7 of 7 joints showed hemosiderin deposits, with concomitant synovial hypertrophy in 2 of 7 joints. MRI changes were accompanied by swelling and ultrasound-detected synovial hypertrophy in 1 ankle only. None of the other joints showed abnormalities at physical examination and ultrasound. CONCLUSION In this study, 16% of the joints without reported bleeds showed signs of previous subclinical bleeding, providing evidence for subclinical bleeding in people with severe hemophilia with lifelong access to prophylaxis.
Collapse
Affiliation(s)
- Flora H P van Leeuwen
- Department of Radiology and Nuclear Medicine, Division of Imaging and Oncology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.
| | - Eline P D van Bergen
- Center for Benign Haematology, Thrombosis and Haemostasis, Van Creveldkliniek, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Merel A Timmer
- Center for Benign Haematology, Thrombosis and Haemostasis, Van Creveldkliniek, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Lize F D van Vulpen
- Center for Benign Haematology, Thrombosis and Haemostasis, Van Creveldkliniek, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Roger E G Schutgens
- Center for Benign Haematology, Thrombosis and Haemostasis, Van Creveldkliniek, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Pim A de Jong
- Department of Radiology and Nuclear Medicine, Division of Imaging and Oncology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Kathelijn Fischer
- Center for Benign Haematology, Thrombosis and Haemostasis, Van Creveldkliniek, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Wouter Foppen
- Department of Radiology and Nuclear Medicine, Division of Imaging and Oncology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| |
Collapse
|
4
|
Gallastegui N, Steiner BUK, Aguero P, Bailey C, Kruse-Jarres R, Quon DV, Hanacek C, Volland LM, Barnes RFW, von Drygalski A. The role of point-of-Care Musculoskeletal Ultrasound for Routine Joint evaluation and management in the Hemophilia Clinic - A Real World Experience. BMC Musculoskelet Disord 2022; 23:1111. [PMID: 36539778 PMCID: PMC9768915 DOI: 10.1186/s12891-022-06042-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 11/29/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The use of musculoskeletal ultrasound (MSKUS) for point-of-care (POC) evaluation of hemophilic arthropathy is growing rapidly. However, the extent to which MSKUS influences clinical treatment decisions is unknown. METHODS We conducted a three-year, prospective, multi-center study at three hemophilia treatment centers in the United States to evaluate the utilization of POC-MSKUS for routine clinical decision-making in adult persons with hemophilic arthropathy. Bilateral elbows, knees and ankles were assessed clinically [Hemophilia Joint Health Score (HJHS)] and with POC-MSKUS by the Joint TissueActivity and Damage Exam (JADE) protocol at baseline and approximately annually for two additional times. Treatment decisions, including physical therapy (PT) and "medical" (joint injections/aspirations, referrals to orthopedics, changes/adjustments of hemostatic plans, and use of oral anti-inflammatory medications) were recorded in relation to POC-MSKUS. RESULTS Forty-four persons [median age 37 years (IQR 29, 51)], mostly with severe Hemophilia A on clotting factor prophylaxis, completed 129 visits, yielding 792 joint exams by POC-MSKUS and HJHS [median at baseline 27 (IQR 18, 42)] over a median follow up of 584 days (range: 363 to 1072). Among 157 management decisions, 70% were related to PT plans (n = 110) and 30% were "medical". Point-of-care MSKUS influenced 47/110 (43%) PT plans, mostly informing treatment of specific arthropathic joints (45/47 plans) in patients with high HJHS. Physical therapy plans influenced by POC-MSKUS directed more manual therapy/therapeutic exercises, while plans based on physical exam were focused more on global exercises and wellness. Treatment decisions were mostly based on the identification of specific musculoskeletal abnormalities visualized by POC-MSKUS. Of note 20/47 (43%) POC-MSKUS plans included de-escalation strategies, thereby reducing exercise intensity, mostly for joint instability and subclinical hemarthroses. Point-of-care MSKUS also informed 68% (32/47) of "medical" decisions, surprisingly mostly for injections/aspirations and referrals to orthopedics, and not for adjustments of hemostatic treatment. Although not formally studied, ultrasound images were used frequently for patient education. CONCLUSION Routine joint evaluations with POC-MSKUS resulted in few changes regarding medical management decisions but had a profound effect on the formulation of PT plans. Based on these findings, new studies are essential to determine the benefit of MSKUS-informed management plans on joint health outcomes.
Collapse
Affiliation(s)
- N Gallastegui
- grid.266100.30000 0001 2107 4242Department of Medicine, Division of Hematology/Oncology, University of California San Diego, CA San Diego, USA ,grid.261331.40000 0001 2285 7943Department of Medicine, Division of Hematology, The Ohio State University, OH Columbus, USA
| | - BUK Steiner
- Washington Center for Bleeding Disorders, WA Seattle, USA
| | - P Aguero
- grid.266100.30000 0001 2107 4242Department of Medicine, Division of Hematology/Oncology, University of California San Diego, CA San Diego, USA
| | - C Bailey
- grid.489149.90000 0004 5900 1331The Orthopaedic Hemophilia Treatment Center, Orthopaedic Institute for Children, Los Angeles California, USA
| | - R Kruse-Jarres
- Washington Center for Bleeding Disorders, WA Seattle, USA
| | - DV Quon
- grid.489149.90000 0004 5900 1331The Orthopaedic Hemophilia Treatment Center, Orthopaedic Institute for Children, Los Angeles California, USA
| | - C Hanacek
- grid.266100.30000 0001 2107 4242Department of Medicine, Division of Hematology/Oncology, University of California San Diego, CA San Diego, USA ,Department of General Medical Education, KPC Health. Hemet, CA, USA 1810 Cannon Drive, Suite 1150E, OH Columbus, USA
| | - LM Volland
- grid.266100.30000 0001 2107 4242Department of Medicine, Division of Hematology/Oncology, University of California San Diego, CA San Diego, USA ,grid.422264.40000 0004 0542 3790National Hemophilia Foundation, NYC NY, USA
| | - RFW Barnes
- grid.266100.30000 0001 2107 4242Department of Medicine, Division of Hematology/Oncology, University of California San Diego, CA San Diego, USA
| | - A von Drygalski
- grid.266100.30000 0001 2107 4242Department of Medicine, Division of Hematology/Oncology, University of California San Diego, CA San Diego, USA
| |
Collapse
|
5
|
Zwagemaker A, Kloosterman FR, Hemke R, Gouw SC, Coppens M, Romano LGR, Kruip MJHA, Cnossen MH, Leebeek FWG, Hutten BA, Maas M, Fijnvandraat K. Joint status of patients with nonsevere hemophilia A. J Thromb Haemost 2022; 20:1126-1137. [PMID: 35171522 PMCID: PMC9314729 DOI: 10.1111/jth.15676] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 02/01/2022] [Accepted: 02/11/2022] [Indexed: 10/24/2022]
Abstract
BACKGROUND Joint bleeding in hemophilia may eventually lead to joint damage. In nonsevere hemophilia, joint bleeds occur infrequently. Currently, knowledge on the joint status of patients with nonsevere hemophilia using objective imaging is limited. OBJECTIVE To investigate the joint status in patients with nonsevere hemophilia A. METHODS This cross-sectional study included patients with nonsevere hemophilia A aged 24-55 years. Joint status was assessed by magnetic resonance imaging (MRI) of the elbows, knees, and ankles and International Prophylaxis Study Group (IPSG) scores were calculated. Lifetime joint bleeding history was collected from medical files. The contribution of factors to joint outcome was explored using multivariable linear regression analysis. RESULTS In total, 51 patients were included, of whom 19 (37%) had moderate and 32 (63%) had mild hemophilia. Patients had a median age of 43 years (interquartile range [IQR] 32-50), a median factor VIII activity of 10 IU/dl (IQR 4-16) and a median annual joint bleeding rate (AJBR) of 0.0 (IQR 0.0-0.2). Soft-tissue changes (IPSG subscore > 0) in the elbows, knees, and ankles were present in 19%, 71%, and 71% of patients, respectively. Osteochondral changes (IPSG subscore > 0) in the elbows, knees, and ankles were present in 0%, 20%, and 35% of patients, respectively. In 14% of bleed-free joints, hemosiderin depositions were observed. Age and AJBRs were most strongly associated with the IPSG score. CONCLUSION This study demonstrates that a substantial proportion of adults with nonsevere hemophilia has joint changes on MRI despite low joint bleeding rates.
Collapse
Affiliation(s)
- Anne‐Fleur Zwagemaker
- Pediatric HematologyAmsterdam UMCUniversity of AmsterdamEmma Children’s HospitalAmsterdamThe Netherlands
| | - Fabienne R. Kloosterman
- Pediatric HematologyAmsterdam UMCUniversity of AmsterdamEmma Children’s HospitalAmsterdamThe Netherlands
| | - Robert Hemke
- Department of Radiology and Nuclear MedicineAmsterdam University Medical CentersUniversity of AmsterdamAmsterdam Movement SciencesAmsterdamThe Netherlands
| | - Samantha C. Gouw
- Pediatric HematologyAmsterdam UMCUniversity of AmsterdamEmma Children’s HospitalAmsterdamThe Netherlands
- Department of Clinical EpidemiologyLeiden University Medical CenterLeidenThe Netherlands
| | - Michiel Coppens
- Department of Vascular MedicineAmsterdam University Medical CentersAmsterdamthe Netherlands
| | - Lorenzo G. R. Romano
- Department of HematologyErasmus MCErasmus University Medical CenterRotterdamThe Netherlands
| | - Marieke J. H. A. Kruip
- Department of HematologyErasmus MCErasmus University Medical CenterRotterdamThe Netherlands
| | - Marjon H. Cnossen
- Department of Pediatric HematologyErasmus MC Sophia Children’s HospitalErasmus University Medical CenterRotterdamThe Netherlands
| | - Frank W. G. Leebeek
- Department of HematologyErasmus MCErasmus University Medical CenterRotterdamThe Netherlands
| | - Barbara A. Hutten
- Department of Epidemiology and Data ScienceAmsterdam Cardiovascular SciencesAmsterdam University Medical CentersUniversity of AmsterdamAmsterdamThe Netherlands
| | - Mario Maas
- Department of Radiology and Nuclear MedicineAmsterdam University Medical CentersUniversity of AmsterdamAmsterdam Movement SciencesAmsterdamThe Netherlands
| | - Karin Fijnvandraat
- Pediatric HematologyAmsterdam UMCUniversity of AmsterdamEmma Children’s HospitalAmsterdamThe Netherlands
- Department of Molecular Cellular HemostasisSanquin Research and Landsteiner LaboratoryAmsterdamThe Netherlands
| |
Collapse
|
6
|
St-Louis J, Abad A, Funk S, Tilak M, Classey S, Zourikian N, McLaughlin P, Lobet S, Hernandez G, Akins S, Wells AJ, Manco-Johnson M, John J, Austin S, Chowdhary P, Hermans C, Nugent D, Bakeer N, Mangles S, Hilliard P, Blanchette VS, Feldman BM. The Hemophilia Joint Health Score version 2.1 Validation in Adult Patients Study: A multicenter international study. Res Pract Thromb Haemost 2022; 6:e12690. [PMID: 35356667 PMCID: PMC8956786 DOI: 10.1002/rth2.12690] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 02/02/2022] [Accepted: 02/08/2022] [Indexed: 12/03/2022] Open
Abstract
Background The Hemophilia Joint Health Score (HJHS) was developed and validated to detect arthropathy in children. Additional evidence is required to show validity in adults. We studied the convergent and discriminant construct validity of the HJHS version 2.1(HJHSv2.1) in adults with hemophilia. A secondary aim was to define age‐related normative adult HJHSv2.1 reference values. Methods We studied 192 adults with hemophilia, and 120 healthy adults in four age‐matched groups—18 to 29, 30 to 40, 41 to 50, and >50 years—at nine centers. Trained physiotherapists scored the HJHS and World Federation of Hemophilia (WFH) joint score. Health history, the Functional Independence Scale of Hemophilia (FISH), Hemophilia Activities List (HAL), and Short‐Form McGill Pain Questionnaire (SF‐MPQ) were also collected. Results The median age was 35.0 years. Of participants with hemophilia, 68% had severe, 14% moderate, and 18% mild disease. The HJHS correlated strongly with WFH score (Spearman’s rho [rs] = .95, P < .001). Moderate correlations were seen between the FISH (rs = .50, P < .001) and SF‐MPQ Present Pain Intensity (rs = .50, P < .001), while a modest correlation was found with the HAL (rs = −.37, P < .001). The HJHS significantly differentiated between age groups (Kruskal‐Wallis T = 35.02, P < .001) and disease severity in participants with hemophilia. The HJHS had high internal reliability (Cronbach’s α = .88). We identified duration of swelling as a redundant item in the HJHS. Conclusions The HJHS shows evidence of strong convergent and discriminant construct validity to detect arthropathy in adults with hemophilia and is well suited for use in this population.
Collapse
Affiliation(s)
- Jean St-Louis
- Department of Hematology CHU Sainte-Justine and Hôpital Maisonneuve-Rosemont Montréal Québec Canada.,Department of Medicine Université de Montréal Montréal Québec Canada
| | - Audrey Abad
- Child Health Evaluative Sciences, Research Institute The Hospital for Sick Children Toronto Ontario Canada
| | - Sharon Funk
- Hemophilia and Thrombosis Center University of Colorado Denver Colorado USA
| | - Merlyn Tilak
- Department of Physical Medicine & Rehabilitation Christian Medical College Vellore India
| | - Stephen Classey
- Haemostasis and Thrombosis Centre St Thomas' Hospital London UK
| | - Nichan Zourikian
- Pediatric/Adult Comprehensive Hemostasis Center CHU Sainte-Justine Montréal Québec Canada
| | - Paul McLaughlin
- Katharine Dormandy Haemophilia and Thrombosis Centre The Royal Free Hospital London UK
| | - Sébastien Lobet
- Haemostasis and Thrombosis Unit Division of Haematology Cliniques Universitaires Saint-Luc Brussels Belgium
| | - Grace Hernandez
- The Center for Inherited Blood Disorders (CIBD) Orange County California USA
| | - Stacie Akins
- Indiana Hemophilia & Thrombosis Center Indianapolis Indiana USA
| | - Anna J Wells
- Haemophilia, Haemostasis & Thrombosis Centre Hampshire Hospitals NHS Foundation Trust Basingstoke UK
| | | | - Judy John
- Department of Physical Medicine & Rehabilitation Christian Medical College Vellore India
| | - Steve Austin
- Haemostasis and Thrombosis Centre St Thomas' Hospital London UK
| | - Pratima Chowdhary
- Katharine Dormandy Haemophilia and Thrombosis Centre The Royal Free Hospital London UK
| | - Cedric Hermans
- Haemostasis and Thrombosis Unit Division of Haematology Cliniques Universitaires Saint-Luc Brussels Belgium
| | - Diane Nugent
- The Center for Inherited Blood Disorders (CIBD) Orange County California USA
| | - Nihal Bakeer
- Indiana Hemophilia & Thrombosis Center Indianapolis Indiana USA
| | - Sarah Mangles
- Haemophilia, Haemostasis & Thrombosis Centre Hampshire Hospitals NHS Foundation Trust Basingstoke UK
| | - Pamela Hilliard
- Child Health Evaluative Sciences, Research Institute The Hospital for Sick Children Toronto Ontario Canada
| | - Victor S Blanchette
- Division of Hematology/Oncology The Hospital for Sick Children Toronto Ontario Canada.,Department of Pediatrics Faculty of Medicine University of Toronto Toronto Ontario Canada
| | - Brian M Feldman
- Division of Rheumatology The Hospital for Sick Children Toronto Ontario Canada.,Department of Pediatrics Faculty of Medicine Institute of Health Policy, Management and Evaluation The Dalla Lana School of Public Health University of Toronto Toronto Ontario Canada
| |
Collapse
|
7
|
Abstract
INTRODUCTION Emicizumab is a bispecific antibody exerting cofactor function of FVIIIa irrespective of the presence of FVIII inhibitors. Long-term data of phase 1/2 and phase 3 studies have been accumulated. Various questions such as indicated patients, ITI, application to PUPs, hemostatic treatment including surgeries, and emicizumab-related morbidity remain to be solved. AREAS COVERED The review describes the mode of action, data from pre-/post-marketing and ongoing clinical studies according to PubMed search and our own works. EXPERT OPINION For patients with a persistent inhibitor, emicizumab is a definite therapeutic option, although the possibility of BPAs-associated thromboembolic/TMA events raises concerns. The use of ITI together with emicizumab prophylaxis is being examined in clinical trials. For non-inhibitor, especially pediatric patients, emicizumab prophylaxis can be an option. Outcome assessment 'beyond ABR' such as joint health, physical/mental activity, QOL is required. Furthermore, continuous data collection for emicizumab-related adverse events and morbidity would be recommended.
Collapse
Affiliation(s)
- Midori Shima
- Thrombosis and Hemostasis Research Center, Nara Medical University, Kashihara-shi, Japan
| |
Collapse
|
8
|
MRI predicts 5-year joint bleeding and development of arthropathy on radiographs in hemophilia. Blood Adv 2021; 4:113-121. [PMID: 31917842 DOI: 10.1182/bloodadvances.2019001238] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 12/11/2019] [Indexed: 01/01/2023] Open
Abstract
Magnetic resonance imaging (MRI) is considered as the reference standard to assess early joint changes in hemophilia. However, the clinical relevance of MRI findings is still unknown. The aim of this prospective study was to assess the predictive value of MRI for 5-year joint bleeding and progression of arthropathy in patients with hemophilia. Both knees and ankles of patients with hemophilia and absent or limited arthropathy on radiographs were assessed by using MRI and radiographs. MRI scans were scored according to the International Prophylaxis Study Group MRI score for hemophilic arthropathy. Patients were followed up for 5 years, including assessment of joint bleeding and repeated radiographic assessment. Associations between baseline MRI findings with 5-year bleeding and progression of arthropathy were expressed as odds ratios (OR), adjusted for severity of disease and joint bleeding history. Baseline assessment included 104 joints of 26 patients with hemophilia (median age, 21 years). Four ankles with severe joint changes were excluded. Follow-up was available for 96 (92%) of 104 joints. During 5 years of follow-up, bleeding was reported for 36% of joints. Five-year bleeding was significantly increased in joints with synovial hypertrophy at 80% vs 27% in joints without synovial hypertrophy (OR, 10.1; 95% confidence interval, 3.4-31.3). In joints with normal baseline radiographs, any osteochondral or synovial changes on MRI were associated with radiographic changes 5 years later (positive predictive value, 75%; negative predictive value, 98%). Joints with synovial hypertrophy on MRI had a significantly higher chance of 5-year bleeding. All MRI changes, except effusion, were strong predictors for development of arthropathy on radiographs.
Collapse
|
9
|
Gooding R, Thachil J, Alamelu J, Motwani J, Chowdary P. Asymptomatic Joint Bleeding and Joint Health in Hemophilia: A Review of Variables, Methods, and Biomarkers. J Blood Med 2021; 12:209-220. [PMID: 33833602 PMCID: PMC8023018 DOI: 10.2147/jbm.s304597] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 03/19/2021] [Indexed: 12/14/2022] Open
Abstract
Joint health is a key contributor to quality of life in patients with hemophilia. However, variables that impact long-term joint outcomes have not been comprehensively defined. A systematic literature search identified publications relating to joint health in patients with hemophilia. Studies clearly show that early, sustained prophylaxis with factor replacements improves long-term joint outcomes. However, a subset of patients appear to develop arthropathy despite maintaining excellent bleeding outcomes, which suggests possible recurrent asymptomatic bleeding into the joints in these patients. Furthermore, limited data are available on how long-acting factor VIII and factor IX replacement therapies could impact long-term joint outcomes. Many variables were identified as potential indicators that a patient may develop hemophilic arthropathy, including genetic mutations, endogenous factor VIII and IX levels, bone health, and physical activity levels. Tools for the diagnosis and monitoring of hemophilic arthropathy are critical to detect early joint damage, so that management can be adjusted accordingly. Imaging techniques, particularly magnetic resonance imaging, can detect synovial changes, a strong predictor for the future development of hemophilic arthropathy. In addition, several biomarkers associated with cartilage and bone formation, vascularization, and angiogenesis could potentially identify the onset and progression of early joint damage. Since the development of hemophilic arthropathy is complex, a comprehensive therapeutic approach is necessary for the effective prevention of arthropathy in patients with hemophilia.
Collapse
Affiliation(s)
- Richard Gooding
- Leicester Haemophilia Centre, Haemostasis & Thrombosis Unit, Leicester Royal Infirmary, Leicester, UK
| | - Jecko Thachil
- Haematology Department, Manchester Royal Infirmary, Manchester, UK
| | - Jayanthi Alamelu
- Haemophilia Department, Evelina Children's Hospital - St Thomas' Hospital, London, UK
| | - Jayashree Motwani
- Haemophilia Comprehensive Care Centre, Birmingham Children's Hospital, Birmingham, UK
| | - Pratima Chowdary
- Katharine Dormandy Haemophilia Centre, Royal Free Hospital, London, UK
| |
Collapse
|
10
|
Abstract
BACKGROUND Certain hemophilia patients are unable to cooperate with or afford magnetic resonance imaging (MRI) examinations. The purpose of our study was to explore the value of multislice spiral computed tomography (MSCT) in evaluating hemophilic arthropathy (HA). METHODS Thirty-eight patients with 73 joints of HA were consecutively selected from January 2016 to May 2018 for this prospective study. All 73 joints were examined by X-ray, CT, and MRI within 2 days. The MRI scores of the joints were determined by the International Prophylaxis Study Group (IPSG) standard. The CT findings were quantified according to the IPSG standard, except for cartilage injury, which was quantified by joint space narrowing using the X-ray Pettersson score. The CT and MRI scores were compared by the paired Wilcoxon signed-rank test. The correlations between the CT score of joint space narrowing and MRI score of cartilage injury and the total CT and MRI scores were analyzed by Spearman rank correlation. The kappa test was used to compare the consistency of CT and MRI scores. RESULTS MRI was superior to CT based on the scores for small amount of effusion (P < 0.05), synovial hypertrophy and hemosiderin deposition in the mild groups (P < 0.05). The CT and MRI scores were not significantly different for moderate and massive effusion, synovial hypertrophy, and hemosiderin deposition in the moderate and severe groups, bone erosion or cystic changes (P > 0.05), and there was a high degree of consistency between the two scores (kappa > 0.81). The consistency between the Pettersson scores of joint space narrowing on CT and the IPSG scores of cartilage injury on MRI was high (kappa = 0. 774, P < 0.05). CONCLUSION The image scores of MSCT are generally consistent with MRI except for mild synovitis, which can be used as an alternative for the evaluation of HA.
Collapse
|
11
|
Vøls KK, Kjelgaard‐Hansen M, Ley CD, Hansen AK, Petersen M. Initial joint bleed volume in a delayed on-demand treatment setup correlates with subsequent synovial changes in hemophilic mice. Animal Model Exp Med 2020; 3:160-168. [PMID: 32613175 PMCID: PMC7323705 DOI: 10.1002/ame2.12118] [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: 01/20/2020] [Revised: 04/24/2020] [Accepted: 04/27/2020] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Hemophilic arthropathy is a debilitating morbidity of hemophilia caused by recurrent joint bleeds. We investigated if the joint bleed volume, before initiation of treatment, was linked to the subsequent degree of histopathological changes and the development of bone pathology in a mouse model of hemophilic arthropathy. METHODS FVIII knock-out (F8-KO) mice were dosed with a micro-CT blood pool agent prior to induction of hemarthrosis. Eight hours after induction, the bleed volume was quantified with micro computed tomography (micro-CT) and recombinant FVIII treatment initiated. On Day 8, inflammation in the knees was characterized by fluorescence molecular tomography. On Day 14, knee pathology was characterized by micro-CT and histopathology. In a second study, contrast agent was injected into the knee of wild-type (WT) mice, followed by histopathological evaluation on Day 14. RESULTS The average joint bleed volume before treatment was 3.9 mm3. The inflammation-related fluorescent intensities in the injured knees were significantly increased on Day 8. The injured knees had significantly increased synovitis scores, vessel counts, and areas of hemosiderin compared to un-injured knees. However, no cartilage- or bone pathology was observed. The bleed volume before initiation of treatment correlated with the degree of synovitis and was associated with high fluorescent intensity on Day 8. In F8-KO and WT mice, persistence of contrast agent in the joint elicited morphological changes. CONCLUSION When applying a delayed on-demand treatment regimen to hemophilic mice subjected to an induced knee hemarthrosis, the degree of histopathological changes on Day 14 reflected the bleed volume prior to initiation of treatment.
Collapse
Affiliation(s)
- Kåre Kryger Vøls
- Global Drug DiscoveryNovo Nordisk A/SMaaloevDenmark
- Veterinary and Animal SciencesUniversity of CopenhagenFrederiksbergDenmark
| | | | | | | | - Maj Petersen
- Global Drug DiscoveryNovo Nordisk A/SMaaloevDenmark
| |
Collapse
|
12
|
von Drygalski A, Barnes RFW, Jang H, Ma Y, Wong JH, Berman Z, Du J, Chang EY. Advanced magnetic resonance imaging of cartilage components in haemophilic joints reveals that cartilage hemosiderin correlates with joint deterioration. Haemophilia 2019; 25:851-858. [PMID: 31199035 DOI: 10.1111/hae.13802] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 05/16/2019] [Accepted: 05/17/2019] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Evidence suggests that toxic iron is involved in haemophilic joint destruction. AIM To determine whether joint iron deposition is linked to clinical and imaging outcomes in order to optimize management of haemophilic joint disease. METHODS Adults with haemophilia A or haemophilia B (n = 23, ≥ age 21) of all severities were recruited prospectively to undergo assessment with Hemophilia Joint Health Scores (HJHS), pain scores (visual analogue scale [VAS]) and magnetic resonance imaging (MRI) at 3T using conventional MRI protocols and 4-echo 3D-UTE-Cones sequences for one affected arthropathic joint. MRI was scored blinded by two musculoskeletal radiologists using the International Prophylaxis Study Group (IPSG) MRI scale. Additionally, UTE-T2* values of cartilage were quantified. Correlations between parameters were performed using Spearman rank correlation. Two patients subsequently underwent knee arthroplasty, which permitted linking of histological findings (including Perl's reaction) with MRI results. RESULTS MRI scores did not correlate with pain scores or HJHS. Sixteen joints had sufficient cartilage for UTE-T2* analysis. T2* values for cartilage correlated inversely with HJHS (rs = -0.81, P < 0.001) and MRI scores (rs = -0.52, P = 0.037). This was unexpected since UTE-T2* values decrease with better joint status in patients with osteoarthritis, suggesting that iron was present and responsible for the effects. Histological analysis of cartilage confirmed iron deposition within chondrocytes, associated with low UTE-T2* values. CONCLUSIONS Iron accumulation can occur in cartilage (not only in synovium) and shows a clear association with joint health. Cartilage iron is a novel biomarker which, if quantifiable with innovative joint-specific MRI T2* sequences, may guide treatment optimization.
Collapse
Affiliation(s)
- Annette von Drygalski
- Department of Medicine, University of California San Diego, San Diego, California.,Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California
| | - Richard F W Barnes
- Department of Medicine, University of California San Diego, San Diego, California
| | - Hyungseok Jang
- Department of Radiology, University of California San Diego, San Diego, California
| | - Yajun Ma
- Department of Radiology, University of California San Diego, San Diego, California
| | - Jonathan H Wong
- Department of Radiology, University of California San Diego, San Diego, California
| | - Zachary Berman
- Department of Radiology, University of California San Diego, San Diego, California
| | - Jiang Du
- Department of Radiology, University of California San Diego, San Diego, California
| | - Eric Y Chang
- Department of Radiology, University of California San Diego, San Diego, California.,Radiology Service, VA San Diego Healthcare System, San Diego, California
| |
Collapse
|
13
|
Gouw SC, Timmer MA, Srivastava A, de Kleijn P, Hilliard P, Peters M, Blanchette V, Fischer K. Measurement of joint health in persons with haemophilia: A systematic review of the measurement properties of haemophilia-specific instruments. Haemophilia 2019; 25:e1-e10. [PMID: 30427100 PMCID: PMC7379965 DOI: 10.1111/hae.13631] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Revised: 04/20/2018] [Accepted: 05/04/2018] [Indexed: 12/27/2022]
Abstract
INTRODUCTION Accurate assessment of joint health in persons with haemophilia is crucial. Several haemophilia-specific measurement tools are available, but an overview of the measurement properties is lacking. AIM To provide an overview of the measurement properties of haemophilia-specific measurement tools to assess clinical joint health. METHODS MEDLINE and EMBASE were searched for reports on reliability, validity or responsiveness of the World Federation of Haemophilia Orthopedic Joint Score (WFH), Colorado Physical Examination Score (CPE), joint examination score by Petrini (PJS) and Hemophilia Joint Health Score (HJHS). Methodological quality of the studies was assessed using an adapted COSMIN checklist. RESULTS The search yielded 2905 unique hits, and 98 papers were included. The methodological quality of the included studies was limited. The HJHS was studied most extensively, which yielded limited evidence for good internal consistency and structural validity, moderate evidence for hypothesis testing in adults and conflicting evidence for hypothesis testing in children. Reliability, measurement error and responsiveness were rated unknown due to low COSMIN scores. For the CPE and PJS, we found limited to moderate evidence for good responsiveness and conflicting evidence for hypothesis testing. CONCLUSION Only patchy evidence is available on the quality of measurement properties of all haemophilia-specific joint health scores. Although significant gaps in the evidence for all instruments remain, measurement properties of the HJHS were most extensively studied and show no drawbacks for use in clinical practice. This review forms the basis for further research aimed at the assessment of measurement properties of measurement tools to assess joint health.
Collapse
Affiliation(s)
- Samantha C. Gouw
- Department of Pediatric HematologyAcademic Medical CenterAmsterdamThe Netherlands
- Department of Clinical EpidemiologyLeiden University Medical CenterAmsterdamThe Netherlands
| | - Merel A. Timmer
- Van Creveldkliniek, Department of HematologyUniversity Medical CenterUtrechtThe Netherlands
| | - Alok Srivastava
- Department of HematologyChristian Medical CollegeVelloreIndia
| | - Piet de Kleijn
- Van Creveldkliniek, Department of HematologyUniversity Medical CenterUtrechtThe Netherlands
- Department of Rehabilitation, Physical Therapy Science and Sport, Brain Center Rudolf MagnusUniversity Medical Center UtrechtUtrechtthe Netherlands
| | - Pamela Hilliard
- Department of RehabilitationHospital for Sick ChildrenTorontoOntarioCanada
| | - Marjolein Peters
- Department of Pediatric HematologyAcademic Medical CenterAmsterdamThe Netherlands
| | - Victor Blanchette
- Department of Paediatrics, Division of Hematology/Oncology, Hospital for Sick ChildrenUniversity of TorontoTorontoOntarioCanada
| | - Kathelijn Fischer
- Van Creveldkliniek, Department of HematologyUniversity Medical CenterUtrechtThe Netherlands
| |
Collapse
|
14
|
Foppen W, van der Schaaf IC, Beek FJA, Mali WPTM, Fischer K. Diagnostic accuracy of point-of-care ultrasound for evaluation of early blood-induced joint changes: Comparison with MRI. Haemophilia 2018; 24:971-979. [PMID: 29790633 DOI: 10.1111/hae.13524] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/30/2018] [Indexed: 01/14/2023]
Abstract
INTRODUCTION Recurrent joint bleeding is the hallmark of haemophilia. Synovial hypertrophy observed with Magnetic Resonance Imaging (MRI) is associated with an increased risk of future joint bleeding. AIM The aim of this study was to investigate whether point-of-care ultrasound (POC-US) is an accurate alternative for MRI for the detection of early joint changes. METHODS In this single centre diagnostic accuracy study, bilateral knees and ankles of haemophilia patients with no or minimal arthropathy on X-rays were scanned using POC-US and 3 Tesla MRI. POC-US was performed by 1 medical doctor, blinded for MRI, according to the "Haemophilia Early Arthropathy Detection with Ultrasound" (HEAD-US) protocol. MRIs were independently scored by 2 radiologists, blinded for clinical data and ultrasound results. Diagnostic accuracy parameters were calculated with 95% confidence intervals (CI). RESULTS Knees and ankles of 24 haemophilia patients (96 joints), aged 18-34, were studied. Synovial hypertrophy on MRI was observed in 20% of joints. POC-US for synovial tissue was correct (overall accuracy) in 97% (CI: 91-99) with a positive predictive value of 94% (CI: 73-100) and a negative predictive value of 97% (CI: 91-100). The overall accuracy of POC-US for cartilage abnormalities was 91% (CI: 83-96) and for bone surface irregularities 97% (CI: 91-99). CONCLUSION POC-US could accurately assess synovial hypertrophy, bone surface irregularities and cartilage abnormalities in haemophilia patients with limited joint disease. As POC-US is an accurate and available alternative for MRI, it can be used for routine evaluation of early joint changes.
Collapse
Affiliation(s)
- W Foppen
- Department of Radiology, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - I C van der Schaaf
- Department of Radiology, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - F J A Beek
- Department of Radiology, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - W P T M Mali
- Department of Radiology, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - K Fischer
- Julius Centre for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht, The Netherlands.,Van Creveldkliniek, Department of Hematology, University Medical Centre Utrecht, Utrecht, The Netherlands
| |
Collapse
|
15
|
Lobet S, Croisier JL, Lantin AC, Hermans C, Peerlinck K, Vandesande J, Pialat JB, Deschamps K. Deficits of ankle muscle strength not found in children, adolescents and young adults with haemophilic ankle arthropathy. Haemophilia 2017; 23:e409-e418. [DOI: 10.1111/hae.13274] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/21/2017] [Indexed: 12/25/2022]
Affiliation(s)
- S. Lobet
- Secteur des Sciences de la Santé; Institut de Recherche Expérimentale et Clinique; Neuromusculoskeletal Lab (NMSK); Université catholique de Louvain; Brussels Belgium
- Service d'hématologie; Cliniques universitaires Saint-Luc; Brussels Belgium
- Service de médecine physique et réadaptation; Cliniques universitaires Saint-Luc; Brussels Belgium
| | - J.-L. Croisier
- Department of motricity and rehabilitation sciences; University and CHU of Liège; Liège Belgium
| | - A.-C. Lantin
- Comité d’Éthique Biomédicale Hospitalo-Facultaire UCL; Bruxelles Belgium
| | - C. Hermans
- Service d'hématologie; Cliniques universitaires Saint-Luc; Brussels Belgium
| | - K. Peerlinck
- Centre for molecular and vascular biology; KU Leuven; Leuven Belgium
| | - J. Vandesande
- Centre for molecular and vascular biology; KU Leuven; Leuven Belgium
| | - J.-B. Pialat
- Centre Hospitalier Lyon Sud; Service de Radiologie; Hospices Civils de Lyon; Pierre-Bénite France
- Université Claude Bernard Lyon 1; Université de Lyon; Lyon France
- LYOS INSERM UMR 1033; Lyon France
| | - K. Deschamps
- KU Leuven; Department of rehabilitation sciences; Musculoskeletal rehabilitation research group; Leuven Belgium
- Department of Podiatry; Artevelde University College; Ghent Belgium
- Department of Podiatry; Parnasse-ISEI; Haute Ecole Leonard de Vinci; Brussels Belgium
| |
Collapse
|
16
|
Lobet S, McCarthy A, Hermans C, Peerlinck K, Matricali GA, Staes F, Deschamps K. Biomechanical markers and theoretical concepts related to haemophilic ankle and subtalar joint arthropathy: introducing the term ‘haemophilic tarsal pan-arthropathy’. Haemophilia 2017; 23:e250-e258. [DOI: 10.1111/hae.13202] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/16/2017] [Indexed: 12/22/2022]
Affiliation(s)
- S. Lobet
- Secteur des Sciences de la Santé; Institut de Recherche Expérimentale et Clinique; Computer Assisted Robotic Surgery (CARS); Université catholique de Louvain; Brussels Belgium
- Cliniques universitaires Saint-Luc; Service d'hématologie; Brussels Belgium
- Cliniques universitaires Saint-Luc; Service de médecine physique et réadaptation; Brussels Belgium
| | - A. McCarthy
- Katharine Dormandy Haemophilia & Thrombosis Centre; Royal Free Hospital; London UK
| | - C. Hermans
- Cliniques universitaires Saint-Luc; Service d'hématologie; Brussels Belgium
| | - K. Peerlinck
- Centre for Molecular and Vascular Biology; KU Leuven; Leuven Belgium
| | - G. A. Matricali
- Department of Development & Regeneration; KU Leuven; Leuven Belgium
- Department of Orthopaedics; Foot & Ankle Unit; University Hospitals Leuven; KU Leuven; Leuven Belgium
- Institute of Orthopaedic Research & Training; KU Leuven; Leuven Belgium
| | - F. Staes
- Department of Rehabilitation Sciences; Musculoskeletal Rehabilitation Research Group; KU Leuven; Leuven Belgium
| | - K. Deschamps
- Department of Rehabilitation Sciences; Musculoskeletal Rehabilitation Research Group; KU Leuven; Leuven Belgium
- Department of Podiatry; Artevelde University College; Ghent Belgium
- Department of Podiatry; Parnasse-ISEI; Haute Ecole Leonard de Vinci; Bruxelles Belgium
| |
Collapse
|
17
|
Liu Y, Chen L, Zhao H, Zhang J. Analyses of joint health and influencing factors in different age groups of Chinese children with haemophilia. Haemophilia 2016; 22:e545-e548. [PMID: 27761965 DOI: 10.1111/hae.12983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2016] [Indexed: 11/28/2022]
Affiliation(s)
- Y. Liu
- Department of Physical Medicine and Rehabilitation; Peking Union Medical College Hospital; Chinese Academy of Medical Science; Beijing China
| | - L. Chen
- Department of Physical Medicine and Rehabilitation; Peking Union Medical College Hospital; Chinese Academy of Medical Science; Beijing China
| | - H. Zhao
- Department of Physical Medicine and Rehabilitation; Peking Union Medical College Hospital; Chinese Academy of Medical Science; Beijing China
| | - J. Zhang
- Department of Physical Medicine and Rehabilitation; Peking Union Medical College Hospital; Chinese Academy of Medical Science; Beijing China
| |
Collapse
|
18
|
Fischer K, Poonnoose P, Dunn AL, Babyn P, Manco-Johnson MJ, David JA, van der Net J, Feldman B, Berger K, Carcao M, de Kleijn P, Silva M, Hilliard P, Doria A, Srivastava A, Blanchette V. Choosing outcome assessment tools in haemophilia care and research: a multidisciplinary perspective. Haemophilia 2016; 23:11-24. [DOI: 10.1111/hae.13088] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/13/2016] [Indexed: 01/23/2023]
Affiliation(s)
- K. Fischer
- Van Creveldkliniek; University Medical Center Utrecht; Utrecht The Netherlands
| | - P. Poonnoose
- Department of Orthopaedics; Christian Medical College; Vellore Tamil Nadu India
| | - A. L. Dunn
- Division of Hematology and Oncology; Nationwide Children's Hospital and The Ohio State University; Columbus OH USA
| | - P. Babyn
- Department of Medical Imaging; University of Saskatchewan and Saskatoon Health Region Royal University Hospital; Saskatoon SK Canada
| | - M. J. Manco-Johnson
- Section of Hematology/Oncology/Bone Marrow Transplantation; Department of Pediatrics; University of Colorado Anschutz Medical Campus and Children's Hospital; Aurora CO USA
| | - J. A. David
- Department of PMR; Christian Medical College; Vellore Tamil Nadu India
| | - J. van der Net
- Child Health Services; Child Development and Exercise Center; University Medical Center and Children's Hospital; Utrecht The Netherlands
| | - B. Feldman
- Division of Rheumatology; Department of Paediatrics and Child Health Evaluative Sciences; Research Institute; Hospital for Sick Children; University of Toronto; Toronto ON Canada
| | - K. Berger
- Division of Haematology/Oncology; University Hospital of Munich; Munich Germany
| | - M. Carcao
- Division of Haematology/Oncology; Department of Paediatrics and Child Health Evaluative Sciences; Research Institute; Hospital for Sick Children; University of Toronto; Toronto ON Canada
| | - P. de Kleijn
- Department of Rehabilitation, Nursing Science and Sports, and Van Creveldkliniek; University Medical Center Utrecht; Utrecht The Netherlands
| | - M. Silva
- Department of Orthopaedic Surgery; Orthopaedic Institute for Children; David Geffen School of Medicine at UCLA; Los Angeles CA USA
| | - P. Hilliard
- Department of Rehabilitation; Hospital for Sick Children; University of Toronto; Toronto ON Canada
| | - A. Doria
- Department of Diagnostic Imaging; Research Institute; Hospital for Sick Children; University of Toronto; Toronto ON Canada
| | - A. Srivastava
- Department of Haematology; Christian Medical College; Vellore Tamil Nadu India
| | - V. Blanchette
- Division of Haematology/Oncology; Department of Paediatrics and Child Health Evaluative Sciences; Research Institute; Hospital for Sick Children; University of Toronto; Toronto ON Canada
| | | |
Collapse
|
19
|
Gringeri A, Doralt J, Valentino LA, Crea R, Reininger AJ. An innovative outcome-based care and procurement model of hemophilia management. Expert Rev Pharmacoecon Outcomes Res 2016; 16:337-45. [PMID: 27074697 DOI: 10.1080/14737167.2016.1178066] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Hemophilia is a rare bleeding disorder associated with spontaneous and post-traumatic bleeding. Each hemophilia patient requires a personalized approach to episodic or prophylactic treatment, but self-management can be challenging for patients, and avoidable bleeding may occur. Patient-tailored care may provide more effective prevention of bleeding, which in turn, may decrease the likelihood of arthropathy and associated chronic pain, missed time from school or work, and progressive loss of mobility. A strategy is presented here aiming to reduce or eliminate bleeding altogether through a holistic approach based on individual patient characteristics. In an environment of budget constraints, this approach would link procurement to patient outcome, adding incentives for all stakeholders to strive for optimal care and, ultimately, a bleed-free world.
Collapse
Affiliation(s)
| | | | - Leonard A Valentino
- b Baxalta U.S., Inc ., Bannockburn , IL , USA.,c Rush University , Chicago , IL , USA
| | | | | |
Collapse
|
20
|
Klamroth R, Miesbach W, Staritz P. Prospective evaluation of treatment regimens, efficacy and safety of a recombinant factor VIII concentrate in haemophilia A: the German EffeKt study. Haemophilia 2016; 22:684-91. [DOI: 10.1111/hae.12941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 02/09/2016] [Accepted: 02/09/2016] [Indexed: 01/03/2023]
Affiliation(s)
- R. Klamroth
- Abteilung für innere Medizin; Vivantes Klinikum Friedrichshain; Berlin Germany
| | - W. Miesbach
- Medizinische Klinik III; Institut für Transfusionsmedizin; Goethe Universität; Frankfurt Germany
| | - P. Staritz
- SRH Kurpfalzkrankenhaus; Heidelberg GmbH und Hämophiliezentrum; Heidelberg Germany
| | | |
Collapse
|
21
|
Altisent C, Martorell M, Crespo A, Casas L, Torrents C, Parra R. Early prophylaxis in children with severe haemophilia A: clinical and ultrasound imaging outcomes. Haemophilia 2015; 22:218-224. [DOI: 10.1111/hae.12792] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/15/2015] [Indexed: 01/03/2023]
Affiliation(s)
- C. Altisent
- Haemophilia Centre; Hospital Universitari Vall d'Hebron; Barcelona Spain
| | - M. Martorell
- Haemophilia Centre; Hospital Universitari Vall d'Hebron; Barcelona Spain
| | - A. Crespo
- Department of Rehabilitation; Hospital Universitari Vall d'Hebron; Barcelona Spain
| | - L. Casas
- Department of Radiology,; Hospital Universitari Vall d'Hebron; Barcelona Spain
| | - C. Torrents
- Department of Radiology,; Hospital Universitari Vall d'Hebron; Barcelona Spain
| | - R. Parra
- Haemophilia Centre; Hospital Universitari Vall d'Hebron; Barcelona Spain
| |
Collapse
|
22
|
Foppen W, van der Schaaf IC, Fischer K. Value of routine ultrasound in detecting early joint changes in children with haemophilia using the ‘Haemophilia Early Arthropathy Detection with UltraSound’ protocol. Haemophilia 2015; 22:121-5. [DOI: 10.1111/hae.12769] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/28/2015] [Indexed: 11/29/2022]
Affiliation(s)
- W. Foppen
- Department of Radiology; University Medical Center (UMC) Utrecht; Utrecht The Netherlands
| | - I. C. van der Schaaf
- Department of Radiology; University Medical Center (UMC) Utrecht; Utrecht The Netherlands
| | - K. Fischer
- Van Creveldkliniek; Department of Hematology; University Medical Center (UMC) Utrecht; Utrecht The Netherlands
- Julius Center for Health Sciences and Primary Care; University Medical Center (UMC) Utrecht; Utrecht The Netherlands
| |
Collapse
|
23
|
Optimal treatment strategies for hemophilia: achievements and limitations of current prophylactic regimens. Blood 2015; 125:2038-44. [DOI: 10.1182/blood-2015-01-528414] [Citation(s) in RCA: 221] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Abstract
Prophylactic application of clotting factor concentrates is the basis of modern treatment of severe hemophilia A. In children, the early start of prophylaxis as primary or secondary prophylaxis has become the gold standard in most countries with adequate resources. In adults, prophylaxis is reasonably continued when started as primary or secondary prophylaxis in childhood to maintain healthy joint function. Initial data support that adult patients with already existing advanced joint arthropathy benefit from tertiary prophylaxis with significantly lowered number of bleeds, almost complete absence of target joints, and less time off from work. Current prophylactic regimens, although very effective, do not completely prevent joint disease in a long-term perspective. Joint arthropathy in primary prophylaxis develops over many years, sometimes over a decade or even longer time periods. The ankle joints are the first and most severely affected joints in those patients and thus may serve in outcome assessment as an indicator of early joint arthropathy when followed by ultrasound or magnetic resonance imaging. Optimized outcome and best use of available resources is expected from individualization of therapy regimens, which comprises the individual’s bleeding pattern, condition of the musculoskeletal system, level of physical activity and the pharmacokinetic profile of the substituted coagulation factor, and most recently includes novel products with extended half-lives.
Collapse
|
24
|
Abstract
INTRODUCTION Hemophilic arthropathy is the most important cause of morbidity in patients with hemophilia. The earliest alterations that occur during the development of hemophilic arthropathy can be shown using magnetic resonance imaging (MRI). In addition, various tools have been developed to monitor joint health. AIM : The purpose of this study was to determine the correlation between these tools when used to assess hemophilia patients. METHODS This cross-sectional study enrolled 38 hemophilia patients between 2 and 18 years of age. Hemophilia Joint Health Score (HJHS) and radiologic scores (Pettersson and Arnold-Hilgartner) were used to evaluate the joints of the patients (n=236). Magnetic resonance imaging (MRI) was performed on 46 joints that were pathologic according to the HJHS. These joints were imaged bilaterally; therefore, 14 normal joints were imaged. In addition, the Functional Independence Score in Hemophilia (FISH) was used to evaluate the joints of 33 patients. RESULTS The HJHS scores were correlated with the MRI and FISH scores. The annual bleeding rate was not correlated with any scores; however, the number of painful joints was correlated with the MRI scores. The radiologic scores were correlated weakly with progressive score and HJHS. CONCLUSION The agreement between the HJHS scores and the MRI scores suggests that the HJHS may be used safely as a first-line tool. We recommend that the FISH should be used in the routine follow-up of hemophilia patients as a functional evaluation tool. Painful joints may be useful in deciding to apply MRI, whereas the bleeding frequency may not be useful.
Collapse
|
25
|
Oldenburg J, Zimmermann R, Katsarou O, Theodossiades G, Zanon E, Niemann B, Kellermann E, Lundin B. Controlled, cross-sectional MRI evaluation of joint status in severe haemophilia A patients treated with prophylaxis vs. on demand. Haemophilia 2014; 21:171-179. [PMID: 25470205 PMCID: PMC4359687 DOI: 10.1111/hae.12539] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/08/2014] [Indexed: 01/06/2023]
Abstract
In patients with haemophilia A, factor VIII (FVIII) prophylaxis reduces bleeding frequency and joint damage compared with on-demand therapy. To assess the effect of prophylaxis initiation age, magnetic resonance imaging (MRI) was used to evaluate bone and cartilage damage in patients with severe haemophilia A. In this cross-sectional, multinational investigation, patients aged 12-35 years were assigned to 1 of 5 groups: primary prophylaxis started at age <2 years (group 1); secondary prophylaxis started at age 2 to <6 years (group 2), 6 to <12 years (group 3), or 12-18 years (group 4); or on-demand treatment (group 5). Joint status at ankles and knees was assessed using Compatible Additive MRI scoring (maximum and mean ankle; maximum and mean of all 4 joints) and Gilbert scores in the per-protocol population (n = 118). All prophylaxis groups had better MRI joint scores than the on-demand group. MRI scores generally increased with current patient age and later start of prophylaxis. Ankles were the most affected joints. In group 1 patients currently aged 27-35 years, the median of maximum ankle scores was 0.0; corresponding values in groups 4 and 5 were 17.0 and 18.0, respectively [medians of mean index joint scores: 0.0 (group 1), 8.1 (group 2) and 13.8 (group 4)]. Gilbert scores revealed outcomes less pronounced than MRI scores. MRI scores identified pathologic joint status with high sensitivity. Prophylaxis groups had lower annualized joint bleeds and MRI scores vs. the on-demand group. Primary prophylaxis demonstrated protective effects against joint deterioration compared with secondary prophylaxis.
Collapse
|
26
|
Foppen W, van der Schaaf IC, Witkamp TD, Fischer K. Is joint effusion on MRI specific for haemophilia? Haemophilia 2013; 20:582-6. [DOI: 10.1111/hae.12338] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/30/2013] [Indexed: 11/28/2022]
Affiliation(s)
- W. Foppen
- Department of Radiology; University Medical Center (UMC) Utrecht; Utrecht The Netherlands
| | - I. C. van der Schaaf
- Department of Radiology; University Medical Center (UMC) Utrecht; Utrecht The Netherlands
| | - T. D. Witkamp
- Department of Radiology; University Medical Center (UMC) Utrecht; Utrecht The Netherlands
| | - K. Fischer
- Van Creveldkliniek; Department of Haematology, and Julius Center for Health Sciences and Primary Care; University Medical Center (UMC) Utrecht; Utrecht The Netherlands
| |
Collapse
|
27
|
Cross S, Vaidya S, Fotiadis N. Hemophilic Arthropathy: A Review of Imaging and Staging. Semin Ultrasound CT MR 2013; 34:516-24. [DOI: 10.1053/j.sult.2013.05.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
28
|
Sluiter D, Foppen W, de Kleijn P, Fischer K. Haemophilia Joint Health Score in healthy adults playing sports. Haemophilia 2013; 20:282-6. [PMID: 24165530 DOI: 10.1111/hae.12290] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/23/2013] [Indexed: 11/29/2022]
Abstract
To evaluate outcome of prophylactic clotting factor replacement in children with haemophilia, the Haemophilia Joint Health Score (HJHS) was developed aiming at scoring early joint changes in children aged 4-18. The HJHS has been used for adults on long-term prophylaxis but interpretation of small changes remains difficult. Some changes in these patients may be due to sports-related injuries. Evaluation of HJHS score in healthy adults playing sports could improve the interpretation of this score in haemophilic patients. The aim of this study was to evaluate the HJHS scores in a cohort of young, healthy men participating in sports. Concomitant with a project collecting MRI images of ankles and knees in normal young adults, HJHS scores were assessed in 30 healthy men aged 18-26, participating in sports one to three times per week. One physiotherapist assessed their clinical function using the HJHS 2.1. History of joint injuries was documented. MRI images were scored by a single radiologist, using the International Prophylaxis Study Group additive MRI score. Median age of the study group was 24.3 years (range 19.0-26.4) and median frequency of sports activities was three times per week (range 1-4). Six joints (five knees, one ankle) had a history of sports-related injury. The median overall HJHS score was 0 out of 124 (range 0-3), with 60% of subjects showing no abnormalities on HJHS. All joints were normal on MRI. These results suggest that frequent sports participation and related injuries are not related with abnormalities in HJHS scores.
Collapse
Affiliation(s)
- D Sluiter
- Department of Rehabilitation, Nursing Science and Sports, UMC Utrecht, Utrecht, The Netherlands
| | | | | | | |
Collapse
|
29
|
Chan MW, Leckie A, Xavier F, Uleryk E, Tadros S, Blanchette V, Doria AS. A systematic review of MR imaging as a tool for evaluating haemophilic arthropathy in children. Haemophilia 2013; 19:e324-34. [PMID: 23919318 DOI: 10.1111/hae.12248] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/05/2013] [Indexed: 12/26/2022]
Abstract
Our purposes were to determine: (i) whether there is direct evidence that currently available MRI techniques are accurate for early diagnosis of pathological findings in haemophilic arthropathy; (ii) whether there is an MRI scoring system that best correlates with clinical/radiological constructs for evaluation of haemophilic arthropathy; (iii) whether there is an MRI scoring system that best correlates with clinical/radiological constructs for evaluation of haemophilic arthropathy. Articles were screened using MEDLINE (n = 566), EMBASE (n = 201), and the Cochrane Library (n = 1). Two independent reviewers assessed articles for inclusion under the overarching purposes of the review by using the Standards for Reporting of Diagnostic Accuracy (STARD) tool, and the quality of the studies were graded using the Quality Assessment of Diagnostic Accuracy Studies 2 (QUADAS-2) tool. The electronic literature search retrieved 777 references (after duplicates were removed). A total of 32 studies were chosen for inclusion from the results of the search and review of bibliographical references. Using the STARD tool, seven studies were of excellent quality of reporting, and using the QUADAS-2 tool, 10 studies were judged to be of adequate quality. There is 'fair' evidence to recommend MRI as an accurate test for detecting evidence of haemophilic arthropathy and the use of second or third generation MRI scales for assessing haemophilic arthropathy. However, there is no evidence that screening of early intra-articular soft tissue bleed with MRI improves the functional status of joints over time.
Collapse
Affiliation(s)
- M W Chan
- Departments of Diagnostic Imaging, Hospital for Sick Children, Toronto, Canada
| | | | | | | | | | | | | |
Collapse
|
30
|
Fischer K, de Kleijn P. Using the Haemophilia Joint Health Score for assessment of teenagers and young adults: exploring reliability and validity. Haemophilia 2013; 19:944-50. [PMID: 23730725 DOI: 10.1111/hae.12197] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/06/2013] [Indexed: 11/29/2022]
Abstract
Outcome assessment in haemophilia is important to assess results of prophylactic treatment. Recently, the Haemophilia Joint Health Score (HJHS) was developed to assess early joint damage in children with haemophilia. Thus, the aim of this study was to assess reliability and explore validity of the HJHS in teenagers and young adults with haemophilia. Twenty-two patients with haemophilia (mean age 20.4, range 14-30, including 15 severe) were assessed by the HJHS1.0, Haemophilia Activities List (HAL), SF36 and self-evaluation was performed using a Visual Analogue Scale (VAS) scale. A subset of 12 patients were assessed by three physiotherapists to establish interobserver reliability (intraclass correlation coefficient: ICC). Total HJHS1.0 scores were calculated without overall global gait. Validity was explored by the assessment of Pearson's correlation with all outcome parameters and recent Pettersson scores. Overall outcome was good, with median HJHS score of 5.5 of a maximum 144 (range 0-34), median patients' VAS of 96.5 and maximum scores for HAL and SF36 physical functioning for the majority of patients. Pettersson scores were low (median 3.5 of 78, N = 18). Interobserver reliability was good (ICC 0.84), with limits of agreement of ±7.2 points. ICC was unaffected by different score calculation methods. Exploration of validity in 22 patients showed weak correlations of HJHS scores with patients' VAS (0.33) and HAL (-0.40) and strong correlations with SF36-PF (-0.66) and Pettersson scores (0.86). These results suggest that interobserver reliability of the HJHS1.0 in teenagers and young adults with limited joint damage is excellent. Preliminary data on validity were similar or better than those in children.
Collapse
Affiliation(s)
- K Fischer
- Van Creveldkliniek, Department of Haematology, University Medical Center Utrecht, Utrecht; Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht
| | | |
Collapse
|
31
|
Foppen W, Sluiter D, Witkamp TD, Mali WPTM, Fischer K. Haemophilic magnetic resonance imaging score in healthy controls playing sports. Haemophilia 2013; 19:939-43. [DOI: 10.1111/hae.12191] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2013] [Indexed: 11/30/2022]
Affiliation(s)
- W. Foppen
- Department of Radiology; University Medical Center (UMC) Utrecht; Utrecht The Netherlands
| | - D. Sluiter
- Department of Rehabilitation, Nursing Science and Sports; UMC Utrecht; Utrecht The Netherlands
| | - T. D. Witkamp
- Department of Radiology; University Medical Center (UMC) Utrecht; Utrecht The Netherlands
| | - W. P. T. M. Mali
- Department of Radiology; University Medical Center (UMC) Utrecht; Utrecht The Netherlands
| | - K. Fischer
- Van Creveld Clinic; Department of Haematology; Julius Center for Health Sciences and Primary Care; UMC Utrecht; Utrecht The Netherlands
| |
Collapse
|
32
|
Saulyte Trakymiene S, Clausen N, Poulsen LH, Ingerslev J, Rageliene L. Progression of haemophilic arthropathy in children: a Lithuanian--Danish comparative study. Haemophilia 2012; 19:212-8. [PMID: 23167920 DOI: 10.1111/hae.12058] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/09/2012] [Indexed: 11/29/2022]
Abstract
Recurrent bleeding into joints initiates a sequence of events leading to a progressive joint damage in people with severe haemophilia. This is a continuous process during childhood and adolescence, therefore joint abnormalities may be minimal on physical examination in very young children - even those receiving on-demand treatment. The aim of our study was to quantify the burden of arthropathy in Lithuanian patients who had been treated exclusively by on-demand substitution and compare their physical joint health with age-matched Danish patients who received prophylaxis from an early age. Boys, aged 4-17 years, with severe haemophilia and no signs of inhibitors were included in the study. Joint outcome based on the Haemophilia Joint Health Score (HJHS) was analysed in two different treatment groups and compared within the matched pairs. In total, 32 (16 in each treatment group) patients were enroled. A total of 192 joints were evaluated. Joint status according to treatment strategy was strikingly different: 27.4 for on-demand vs. 3.3 for prophylaxis (<0.001) group. Significance of the difference in joint status comparing different treatment strategies was equally strong both in younger (4-9 years) and older (10-17 years) patient groups: 2.2 vs. 12.5 (P = 0.0002) and 3.9 vs. 36.3 (P < 0.0001) respectively. The results further demonstrate the unequivocal effect of prophylaxis on joint status and give an insight into early and late manifestations of joint impairment based on the HJHS in haemophilia patients with treatment on-demand compared with joint changes that may develop over the time with the preventative treatment.
Collapse
Affiliation(s)
- S Saulyte Trakymiene
- Clinic of Children's Diseases, Vilnius University and Centre for Pediatric Hematology/Oncology, Children's Hospital, Vilnius University Hospital Santariskiu Klinikos, Vilnius, Lithuania.
| | | | | | | | | |
Collapse
|
33
|
Lundin B, Manco-Johnson ML, Ignas DM, Moineddin R, Blanchette VS, Dunn AL, Gibikote SV, Keshava SN, Ljung R, Manco-Johnson MJ, Miller SF, Rivard GE, Doria AS. An MRI scale for assessment of haemophilic arthropathy from the International Prophylaxis Study Group. Haemophilia 2012; 18:962-70. [DOI: 10.1111/j.1365-2516.2012.02883.x] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/10/2012] [Indexed: 11/29/2022]
Affiliation(s)
- B. Lundin
- Department of Clinical Sciences Lund, Division of Diagnostic Radiology and Center for Medical Imaging and Physiology; Lund University, Skåne University Hospital; Lund; Sweden
| | - M. L. Manco-Johnson
- Department of Radiology and Hemophilia & Thrombosis Center; University of Colorado; Denver; CO; USA
| | - D. M. Ignas
- Child Health Evaluative Sciences; The Hospital for Sick Children; Toronto; Ontario; Canada
| | - R. Moineddin
- University of Toronto; Public Health, Family and Community Medicine; Toronto; Ontario; Canada
| | - V. S. Blanchette
- Division of Pediatric Hematology/Oncology, The Hospital for Sick Children and Department of Pediatrics; University of Toronto; Toronto; Ontario; Canada
| | - A. L. Dunn
- Aflac Cancer Center and Blood Disorders Service, Children's Healthcare of Atlanta; Emory University School of Medicine; Atlanta; GA; USA
| | - S. V. Gibikote
- Department of Radiology; Christian Medical College; Vellore; Tamil Nadu; India
| | - S. N. Keshava
- Department of Radiology; Christian Medical College; Vellore; Tamil Nadu; India
| | - R. Ljung
- Department of Paediatrics; Lund University; Skåne University Hospital; Malmö-Lund; Sweden
| | - M. J. Manco-Johnson
- Department of Pediatrics and the Hemophilia & Thrombosis Center; University of Colorado; Denver; CO; USA
| | - S. F. Miller
- St. Jude Children's Research Hospital; Memphis; TN; USA
| | - G. E. Rivard
- CHU Sainte Justine; University of Montreal; Montreal; Quebec; Canada
| | - A. S. Doria
- Department of Diagnostic Imaging; The Hospital for Sick Children; Toronto; Ontario; Canada
| | | |
Collapse
|
34
|
|