63 results on '"Hay, Charles R."'
Search Results
52. Management of pregnancy in type 3 von Willebrand disease with alloantibodies.
- Author
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Scott, Martin, Hay, Charles R. M., Elkhalifa, Shuayb, Tower, Clare, Cocker, Michael, and Thachil, Jecko
- Subjects
- *
VON Willebrand disease , *CESAREAN section , *MENORRHAGIA , *PREVENTIVE medicine , *HYDROCORTISONE , *THERAPEUTICS - Abstract
The article presents case study of a 29-year-old pregnant female with high‐titre inhibitor to Type 3 von Willebrand disease (VWF), managed by caesarean delivery, high dose rFVIII and rFVIIa infusions. It mentions that recurrent musculoskeletal bleeding throughout childhood of the patient and subsequent menorrhagia required prophylaxis with an intermediate purity FVIII concentrate. It presents information on use of hydrocortisone and chlorphenamine for treatment of the patient.
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- 2018
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53. The importance of tissue factor source in the management of Factor VII deficiency
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Bolton-Maggs, Paula H. B., Hay, Charles R. M., Shanks, Doreen, Mitchell, Michael J., and McVey, John H.
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- 2007
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54. Summary report of the First International Conference on inhibitors in haemophilia A
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Lacroix-Desmazes S., Scott D. W., Goudemand J., Van Den Berg M., Makris M., Van Velzen A. S., Santagostino E., Lillicrap D., Rosendaal F. R., Hilger A., Sauna Z. E., Oldenburg J., Mantovani L., Mancuso M. E., Kessler C., Hay C. R. M., Knoebl P., Di Minno G., Hoots K., Bok A., Brooker M., Buoso E., Mannucci P. M., Peyvandi F., General Paediatrics, Lacroix-Desmazes, Sebastien, Scott, David W., Goudemand, Jenny, Van Den Berg, Marijke, Makris, Michael, Van Velzen, Alice S., Santagostino, Elena, Lillicrap, David, Rosendaal, Frits R., Hilger, Anneliese, Sauna, Zuben E., Oldenburg, Johanne, Mantovani, Lorenzo, Mancuso, M. Elisa, Kessler, Craig, Hay, Charles R. M., Knoebl, Paul, Di Minno, Giovanni, Hoots, Keith, Bok, Amanda, Brooker, Mark, Buoso, Erica, Mannucci, Pier Mannuccio, Peyvandi, Flora, Lacroix-Desmazes, S, Scott, D, Goudemand, J, Van Den Berg, M, Makris, M, Van Velzen, A, Santagostino, E, Lillicrap, D, Rosendaal, F, Hilger, A, Sauna, Z, Oldenburg, J, Mantovani, L, Mancuso, M, Kessler, C, Hay, C, Knoebl, P, Di Minno, G, Hoots, K, Bok, A, Brooker, M, Buoso, E, Mannucci, P, and Peyvandi, F
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Factor VIII ,Isoantibodie ,alloantibody, antithrombin, autoantibody, blood clotting factor 8 inhibitor, tissue factor pathway inhibitor ,Immune Tolerance ,Journal Article ,Immunology and Allergy ,Blood Coagulation Factor Inhibitor ,Immunotherapy ,Hematology ,Meeting Report ,Hemophilia A ,Autoantibodie ,Human - Published
- 2017
55. Emicizumab prophylaxis in haemophilia A with inhibitors: Three years follow-up from the UK Haemophilia Centre Doctors' Organisation (UKHCDO).
- Author
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Wall C, Xiang H, Palmer B, Chalmers E, Chowdary P, Collins PW, Fletcher S, Hall GW, Hart DP, Mathias M, Sartain P, Shapiro S, Stephensen D, Talks K, and Hay CRM
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- Humans, Follow-Up Studies, Hemorrhage complications, United Kingdom, Factor VIII therapeutic use, Hemophilia A complications, Hemophilia A drug therapy, Antibodies, Bispecific adverse effects
- Abstract
Introduction: The UK National Haemophilia Database (NHD) collects data from all UK persons with haemophilia A with inhibitors (PwHA-I). It is well-placed to investigate patient selection, clinical outcomes, drug safety and other issues not addressed in clinical trials of emicizumab., Aims: To determine safety, bleeding outcomes and early effects on joint health of emicizumab prophylaxis in a large, unselected cohort using national registry and patient reported Haemtrack (HT) data between 01 January 2018 and 30 September 2021., Methods: Prospectively collected bleeding outcomes were analysed in people with ≥6 months emicizumab HT data and compared with previous treatment if available. Change in paired Haemophilia Joint Health Scores (HJHS) were analysed in a subgroup. Adverse events (AEs) reports were collected and adjudicated centrally., Results: This analysis includes 117 PwHA-I. Mean annualised bleeding rate (ABR) was .32 (95% CI, .18; .39) over a median 42 months treatment with emicizumab. Within-person comparison (n = 74) demonstrated an 89% reduction in ABR after switching to emicizumab and an increase in zero treated bleed rate from 45 to 88% (p < .01). In a subgroup of 37 people, total HJHS improved in 36%, remained stable in 46% and deteriorated in 18%, with a median (IQR) within-person change of -2.0 (-9, 1.5) (p = .04). Three arterial thrombotic events were reported, two possibly drug related. Other AEs were generally non-severe and usually limited to early treatment, included cutaneous reactions (3.6%), headaches (1.4%), nausea (2.8%) and arthralgia (1.4%)., Conclusions: Emicizumab prophylaxis is associated with sustained low bleeding rates and was generally well-tolerated in people with haemophilia A and inhibitors., (© 2023 John Wiley & Sons Ltd.)
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- 2023
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56. Application of a hemophilia mortality framework to the Emicizumab Global Safety Database.
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Peyvandi F, Mahlangu JN, Pipe SW, Hay CRM, Pierce GF, Kuebler P, Kruse-Jarres R, and Shima M
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- Antibodies, Bispecific therapeutic use, Antibodies, Monoclonal, Humanized therapeutic use, Factor VIII, Female, Hemophilia A diagnosis, Humans, Life Expectancy, Male, Antibodies, Bispecific adverse effects, Antibodies, Monoclonal, Humanized adverse effects, Hemophilia A drug therapy, Hemophilia A mortality
- Abstract
Background: As the first non-factor replacement therapy for persons with congenital hemophilia A (PwcHA), emicizumab's safety profile is of particular interest to the community., Objectives: We applied an algorithm for categorization of fatal events contemporaneous to emicizumab using reporter-assessed causality documented in the Roche Emicizumab Global Safety Database., Patients/methods: All fatalities in PwcHA reported to the database (from clinical trials, pre-market access, and spontaneous post-marketing reports) were categorized into: associated with hemophilia A-hemorrhagic, thrombotic, human immunodeficiency virus (HIV)/hepatitis C virus (HCV), hepatic (non-HCV); associated with general population-trauma/suicide, non-HA-associated conditions; or, unspecified. Reported cause of death was not reassessed., Results: As of cut-off May 15, 2020, 31 fatalities in PwcHA taking emicizumab were reported. Median age at death was 58 years; 51% had factor VIII inhibitors. Fifteen fatalities were considered associated with HA; overall, the most frequent category was hemorrhage (11/31). Of these, six had a history of life-threatening bleeds, and four had a history of intracranial hemorrhage. The remaining HA-associated fatalities were related to HIV/HCV (3/31) and other hepatic causes (1/31). No cases were categorized as thrombotic. Of 10 cases considered not associated with HA, two were categorized as cardiovascular (non-thrombotic), five as infection/sepsis, and one each of trauma/suicide, pulmonary, and malignancy. Six cases were unspecified., Conclusions: No unique risk of death was associated with emicizumab prophylaxis in PwcHA. The data reveal that mortality in PwcHA receiving emicizumab was primarily associated with hemorrhage or non-HA-associated conditions, and was not reported by treaters to be related to emicizumab treatment., (© 2020 The Authors. Journal of Thrombosis and Haemostasis published by Wiley Periodicals LLC on behalf of International Society on Thrombosis and Haemostasis.)
- Published
- 2021
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57. Establishment of a framework for assessing mortality in persons with congenital hemophilia A and its application to an adverse event reporting database.
- Author
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Pipe SW, Kruse-Jarres R, Mahlangu JN, Pierce GF, Peyvandi F, Kuebler P, De Ford C, Sanabria F, Ko RH, Chang T, and Hay CRM
- Subjects
- Adverse Drug Reaction Reporting Systems, Cause of Death, Comorbidity, Databases, Factual, Female, Hemophilia A diagnosis, Humans, Life Expectancy, Male, United States epidemiology, Hemophilia A mortality
- Abstract
Background: Despite recent therapeutic advances, life expectancy in persons with congenital hemophilia A (PwcHA) remains below that of the non-HA population. As new therapies are introduced, a uniform approach to the assessment of mortality is required for comprehensive evaluation of risk-benefit profiles, timely identification of emerging safety signals, and comparisons between treatments., Objectives: Develop and test a framework for consistent reporting and analysis of mortality across past, current, and future therapies., Patients/methods: We identified known causes of mortality in PwcHA through literature review, analysis of the US Food and Drug Administration Adverse Event Reporting System (FAERS) database, and expert insights. Leading causes of death in general populations are those recognized by the Centers for Disease Control and Prevention and the World Health Organization. We developed an algorithm for assessing fatalities in PwcHA and used this to categorize FAERS data as a proof of concept., Results: PwcHA share mortality causes with the non-HA population including cardiovascular disease, malignancy, infections, pulmonary disease, dementias, and trauma/suicide. Causes associated with HA include hemorrhage, thrombosis, human immunodeficiency virus, hepatitis C virus, and liver dysfunction. We propose an algorithm employing these classes to categorize fatalities and use it to classify FAERS fatality data between 01/01/2000 and 03/31/2020; the most common causes were hemorrhage (22.2%) and thrombosis (10.4%)., Conclusions: A conceptual framework for examining mortality in PwcHA receiving any hemophilia therapy is proposed to analyze and interpret fatalities, enabling consistent and objective assessment. Application of the framework using FAERS data suggests a generally consistent pattern of reported mortality across HA treatments, supporting the utility of this unified approach., (© 2020 The Authors. Journal of Thrombosis and Haemostasis published by Wiley Periodicals LLC on behalf of International Society on Thrombosis and Haemostasis.)
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- 2021
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58. Mortality in congenital hemophilia A - a systematic literature review.
- Author
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Hay CRM, Nissen F, and Pipe SW
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- Adult, Aged, Child, Preschool, Female, Hemophilia A diagnosis, Humans, Infant, Infant, Newborn, Male, Middle Aged, Risk Factors, Hemophilia A mortality
- Abstract
Against a background of a rapidly evolving treatment landscape, a contemporary, evidence-based consolidated understanding of mortality in people with congenital hemophilia A (PwcHA) is lacking. This systematic literature review examines the available data on mortality and causes of death in PwcHA to enable a better understanding of fatalities in PwcHA and evaluate the impact of new treatment paradigms on mortality. A systematic literature review of observational studies was conducted by searching Medline, Embase, and clinical trials registries for articles published from January 2010 to March 2020, using the search terms: hemophilia A (HA), mortality, cause of death. Interventional studies, studies not reporting fatalities, and those reporting only on hemophilia B, acquired HA, or mixed other coagulopathies were excluded. Overall, 7818 unique records were identified and 17 were analyzed. Of these, six reported mortality rates and five reported mortality ratios. Mortality generally decreased over time, despite a spike associated with human immunodeficiency virus (HIV)/hepatitis C virus (HCV) infection in the 1980s and 1990s. Mortality was strongly correlated with age and hemophilia severity. People with hemophilia had a raised mortality risk compared with the general population, particularly in severe hemophilia, and when infected with HIV or HCV. Causes of death varied across populations, countries, and time in 15 identified studies; however, incomplete and heterogeneous reporting limits evidence. Hemorrhage, HIV, HCV, and hepatic disease were the leading causes of death. A unified approach to reporting mortality and cause of death is needed to understand mortality in PwcHA as treatments continue to advance., (© 2020 The Authors. Journal of Thrombosis and Haemostasis published by Wiley Periodicals LLC on behalf of International Society on Thrombosis and Haemostasis.)
- Published
- 2021
- Full Text
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59. Recombinant factor VIII products and inhibitor development in previously untreated patients with severe haemophilia A: Combined analysis of three studies.
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Volkers P, Hanschmann KM, Calvez T, Chambost H, Collins PW, Demiguel V, Hart DP, Hay CRM, Goudemand J, Ljung R, Palmer BP, Santagostino E, van Hardeveld EM, van den Berg M, and Keller-Stanislawski B
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- Humans, Risk Factors, Factor VIII immunology, Factor VIII therapeutic use, Hemophilia A drug therapy, Hemophilia A immunology, Recombinant Proteins therapeutic use
- Abstract
Introduction: Standard treatment of congenital haemophilia A is based on replacement therapy with coagulation factor VIII (FVIII) products. A major complication of FVIII therapy is the occurrence of IgG alloantibodies (inhibitors) that neutralize FVIII activity., Aim: The aim of the analysis was estimating the risk of high-titre inhibitor associated with the second-generation full-length product compared to third-generation full-length product and other recombinant FVIII (rFVIII)., Methods: We conducted a combined analysis of individual patient data from three large studies in previously untreated patients (PUPs) with severe haemophilia A., Results: A total of 1109 PUPs were treated from 1993 to 2013 including 787 PUPs treated from 2004 onwards (primary analysis cohort). A total of 322 patients (29.0%) developed an inhibitor, of which 192 (17.3%) a high-titre inhibitor. In the primary analysis set, 29.9% of patients developed an inhibitor and 17.2% a high-titre inhibitor. The combined analysis indicated a lower risk of high-titre inhibitor development for the third-generation rFVIII product compared to the second-generation rFVIII product (primary analysis: adjusted hazard ratio (HR) = 0.72, 95% CI: 0.49 to 1.06). Adjusted HR for all inhibitor development was significantly lower for the third-generation product compared to the second-generation product., Conclusion: The trend of an increased risk of inhibitor development in PUPs for one recombinant product illustrates that extrapolation from one recombinant factor VIII product to other products might not be justified., (© 2019 John Wiley & Sons Ltd.)
- Published
- 2019
- Full Text
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60. Summary report of the First International Conference on inhibitors in haemophilia A.
- Author
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Lacroix-Desmazes S, Scott DW, Goudemand J, Van Den Berg M, Makris M, Van Velzen AS, Santagostino E, Lillicrap D, Rosendaal FR, Hilger A, Sauna ZE, Oldenburg J, Mantovani L, Mancuso ME, Kessler C, Hay CRM, Knoebl P, Di Minno G, Hoots K, Bok A, Brooker M, Buoso E, Mannucci PM, and Peyvandi F
- Subjects
- Autoantibodies immunology, Humans, Immune Tolerance, Immunotherapy methods, Isoantibodies immunology, Blood Coagulation Factor Inhibitors immunology, Factor VIII immunology, Factor VIII therapeutic use, Hemophilia A immunology, Hemophilia A therapy
- Published
- 2017
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61. Acquired haemophilia: an easy diagnosis to miss in a patient taking warfarin.
- Author
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Talapatra A, Nash MJ, Hay CR, and Thachil J
- Abstract
Acquired Haemophilia (AH) is an autoimmune bleeding disorder, which despite being rare, can be fatal. It occurs in patients with previously normal haemostasis who spontaneously develop IgG autoantibodies against factor VIII. Unlike congenital haemophilia, it manifests as spontaneous bleeding into skin and soft tissues. The presentation can be masked in patients who are receiving warfarin where the bleeding is often attributed to warfarin therapy, as in the case described in this report. Consideration of AH is important in patients taking anticoagulants, when coagulopathy and bleeding fails to correct with usual measures.
- Published
- 2015
62. Incidence of factor VIII inhibitors throughout life in severe hemophilia A in the United Kingdom.
- Author
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Hay CR, Palmer B, Chalmers E, Liesner R, Maclean R, Rangarajan S, Williams M, and Collins PW
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- Adolescent, Adult, Age Factors, Child, Child, Preschool, Databases, Factual, Female, HIV Seropositivity blood, HIV Seropositivity epidemiology, HIV Seropositivity therapy, Hemophilia A epidemiology, Hemophilia A therapy, Humans, Incidence, Male, Retrospective Studies, Risk Factors, United Kingdom, Blood Coagulation Factor Inhibitors blood, Factor VIII antagonists & inhibitors, Hemophilia A blood
- Abstract
The age-adjusted incidence of new factor VIII inhibitors was analyzed in all United Kingdom patients with severe hemophilia A between 1990 and 2009. Three hundred fifteen new inhibitors were reported to the National Hemophilia Database in 2528 patients with severe hemophilia who were followed up for a median (interquartile range) of 12 (4-19) years. One hundred sixty (51%) of these arose in patients ≥ 5 years of age after a median (interquartile range) of 6 (4-11) years' follow-up. The incidence of new inhibitors was 64.29 per 1000 treatment-years in patients < 5 years of age and 5.31 per 1000 treatment-years at age 10-49 years, rising significantly (P = .01) to 10.49 per 1000 treatment-years in patients more than 60 years of age. Factor VIII inhibitors arise in patients with hemophilia A throughout life with a bimodal risk, being greatest in early childhood and in old age. HIV was associated with significantly fewer new inhibitors. The inhibitor incidence rate ratio in HIV-seropositive patients was 0.32 times that observed in HIV-seronegative patients (P < .001). Further study is required to explore the natural history of later-onset factor VIII inhibitors and to investigate other potential risk factors for inhibitor development in previously treated patients.
- Published
- 2011
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63. Integrated analysis of safety and efficacy of a plasma- and albumin-free recombinant factor VIII (rAHF-PFM) from six clinical studies in patients with hemophilia A.
- Author
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Shapiro A, Gruppo R, Pabinger I, Collins PW, Hay CR, Schroth P, Casey K, Patrone L, Ehrlich H, and Ewenstein BM
- Subjects
- Adolescent, Adult, Aged, Child, Child, Preschool, Hemophilia A immunology, Hemorrhage prevention & control, Humans, Infant, Maximum Tolerated Dose, Middle Aged, Patient Compliance, Prospective Studies, Safety, Serum Albumin deficiency, Treatment Outcome, Young Adult, Factor VIII therapeutic use, Hemophilia A therapy
- Abstract
Background: Hemophilia A is an X-linked bleeding disorder that results from insufficient levels of factor VIII (FVIII) coagulant activity., Objective: To evaluate the efficacy and safety of ADVATE rAHF-PFM (Baxter Healthcare Corporation), a recombinant FVIII concentrate manufactured without human or bovine blood-derived additives, and to assess the effect of compliance with prophylactic use in preventing bleeding episodes (BEs)., Methods: Clinical data were integrated from six prospective studies. Two hundred thirty-four hemophilia A subjects (FVIII levels < or = 2%) (median age 14.7 (range: 0.02 - 72.7) years) were included., Results: BEs were managed with one or two infusions and nearly all (1953/1956) responded to treatment. Compliance with a prophylactic treatment regimen significantly reduced the incidence of BEs (p = 0.0061) and prevented non-traumatic joint BEs (median annualized BE rate was 0). One previously treated subject developed an inhibitor; no other safety concerns were observed., Conclusions: These results reinforce the efficacy and safety of rAHF-PFM and suggest that compliance is an essential contributor to the effectiveness of prophylaxis in the treatment of hemophilia A.
- Published
- 2009
- Full Text
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