{"title":"In vitro combined haemostatic efficacy of emicizumab and extended half-life factor VIII compounds","authors":"Laurie Josset, Hamdi Rezigue, Christophe Nougier, Alexandre Leuci, Stéphanie Désage, Anne Lienhart, Yesim Dargaud","doi":"10.1111/hae.15131","DOIUrl":"10.1111/hae.15131","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Introduction</h3>\u0000 \u0000 <p>Early prophylaxis is the gold standard of care for severe haemophilia. The development of subcutaneous Factor VIII (FVIII) mimetics, such as emicizumab, has significantly reduced the disease burden and improved protection against bleeding episodes. Despite its benefits, emicizumab does not fully normalize haemostasis, requiring additional FVIII treatment for surgical procedures and management of breakthrough bleeding. In these cases, extended or ultra-extended half-life FVIII products are most commonly used. However, laboratory monitoring of these combinations can be challenging.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>This study investigates the in vitro combined haemostatic activity of emicizumab with efmoroctocog alfa and efanesoctocog alfa using a thrombin generation assay (TGA).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results and Conclusion</h3>\u0000 \u0000 <p>TGA can be used to monitor combined treatment with emicizumab and either efmoroctocog alfa or efanesoctocog alfa, which is not possible with currently available FVIII reagents for the latter. As expected, there is no synergistic effect between the mimetic and FVIII at therapeutical doses. Both efmoroctocog alfa and efanesoctocog alfa show similar in vitro procoagulant activity in terms of thrombin generation.</p>\u0000 </section>\u0000 </div>","PeriodicalId":12819,"journal":{"name":"Haemophilia","volume":"31 2","pages":"224-230"},"PeriodicalIF":3.0,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143407111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
HaemophiliaPub Date : 2025-02-09DOI: 10.1111/hae.15138
Carmen Escuriola Ettingshausen, Riitta Lassila, Gines Escolar, Christoph Male, Kathrin Schirner, Lisa Heyder, Erik Berntorp
{"title":"Plasma-Derived von Willebrand Factor/Factor VIII Concentrate (Haemate P) in von Willebrand Disease: A Systematic Review and Pharmacovigilance Update","authors":"Carmen Escuriola Ettingshausen, Riitta Lassila, Gines Escolar, Christoph Male, Kathrin Schirner, Lisa Heyder, Erik Berntorp","doi":"10.1111/hae.15138","DOIUrl":"10.1111/hae.15138","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Von Willebrand disease (VWD) is an inherited bleeding disorder caused by deficient or dysfunctional von Willebrand factor (VWF). VWF replacement therapy is indicated in VWD management.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>This systematic review was conducted to evaluate all available evidence of the efficacy, safety, dosing and consumption of pasteurized plasma-derived human coagulation FVIII/human VWF (pdVWF/FVIII; Haemate P/Humate-P) concentrate for on-demand (OD) treatment, surgical prophylaxis and long-term prophylaxis of patients with VWD. A systematic search was performed in MEDLINE and Cochrane Library databases to identify studies (7 June 1982–31 May 2023) reporting the use of pdVWF/FVIII in VWD according to predefined selection criteria. Pharmacovigilance data were also retrieved for the same period.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Fifteen studies were identified, 12 being observational and three interventional. Efficacy and safety assessments and treatment protocols varied across the studies which hindered direct comparisons. Haemostatic efficacy of pdVWF/FVIII was rated excellent/good for OD treatment in 95%–98% of bleeds and in 94%–100% of surgeries. In two separate studies, prophylactic efficacy was rated excellent/good in 100% of treatment cycles. Where reported, median annualized bleeding rates decreased from 3–24 prior prophylaxis to 0.5–6 during prophylaxis. Analysis of pharmacovigilance safety reports showed that pdVWF/FVIII was associated with a low rate of adverse events.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>This systematic literature review and analysis of pharmacovigilance data summarize evidence of over 40 years of clinical use of pdVWF/FVIII, supporting its safety and efficacy in VWD.</p>\u0000 </section>\u0000 </div>","PeriodicalId":12819,"journal":{"name":"Haemophilia","volume":"31 2","pages":"247-262"},"PeriodicalIF":3.0,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/hae.15138","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143381998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
HaemophiliaPub Date : 2025-02-07DOI: 10.1111/hae.70002
Carlos Truque-Díaz, Javier Meroño-Gallut, Rubén Cuesta-Barriuso, Raúl Pérez-Llanes
{"title":"Joint and Myofascial Manual Therapy Techniques in Haemophilic Ankle Arthropathy: A Randomized Pilot Study","authors":"Carlos Truque-Díaz, Javier Meroño-Gallut, Rubén Cuesta-Barriuso, Raúl Pérez-Llanes","doi":"10.1111/hae.70002","DOIUrl":"10.1111/hae.70002","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Haemophilic ankle arthropathy is characterized by chronic pain, loss of strength and proprioception, decreased range of motion (ROM) and impaired functionality.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>To evaluate the safety and efficacy of a manual therapy protocol based on joint and myofascial techniques in patients with haemophilic ankle arthropathy.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>A randomized, single-blind pilot study. Twenty-four patients with haemophilia were randomized to the experimental (manual therapy) and control (no intervention) groups. The intervention lasted for 3 weeks, with one 50-min weekly session. Techniques used: active-passive joint mobilization, articulatory technique, joint decompression and high-speed and short-stroke manipulation, and sustained myofascial induction techniques. The study variables were safety of the intervention (number of hemarthroses), joint pain intensity (visual analogue scale), pressure pain threshold (pressure algometer), range of ankle motion (Leg Motion) and joint condition (Haemophilia Joint Health Score).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>None of the patients developed ankle hemarthrosis during the intervention. After the intervention there were intergroup differences in the variables pain intensity (MD = −0.45; <i>p</i> < 0.001), ROM (MD = 0.19; <i>p</i> = 0.003), joint condition (MD = 0.04; <i>p</i> = 0.03) and pressure pain threshold in the internal malleolus (MD = 1.36; <i>p</i> = 0.01). For the interaction <i>time*group</i> after the follow-up period, there were statistically significant differences in pain intensity (<i>F</i> = 6.94; <i>p</i> = 0.01) and dorsal flexion (<i>F</i> = 3.36; <i>p</i> = 0.04) of the ankle.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Manual therapy based on joint and myofascial techniques is safe in haemophilia patients. A protocol implementing joint and myofascial techniques having the dosage and safety parameters established in this study can improve the intensity of pain and dorsal flexion of the ankle in these patients.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Trial Registration</h3>\u0000 \u0000 <p>ClinicalTrials.gov identifier: NCT05549843</p>\u0000 </section>\u0000 </div>","PeriodicalId":12819,"journal":{"name":"Haemophilia","volume":"31 2","pages":"295-303"},"PeriodicalIF":3.0,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143364406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
HaemophiliaPub Date : 2025-02-07DOI: 10.1111/hae.70001
Meaghan Jane O'Donnell, Rezan Abdul Kadir, Karin P M van Galen, Michelle Lavin
{"title":"Are Women Welcome in Haemophilia Trials?","authors":"Meaghan Jane O'Donnell, Rezan Abdul Kadir, Karin P M van Galen, Michelle Lavin","doi":"10.1111/hae.70001","DOIUrl":"https://doi.org/10.1111/hae.70001","url":null,"abstract":"","PeriodicalId":12819,"journal":{"name":"Haemophilia","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143364390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
HaemophiliaPub Date : 2025-02-07DOI: 10.1111/hae.70000
Seyed Hadi Kalantar, Mohammadreza Razzaghof, Younes Noshadi, Mohammad Ayati Firoozabadi, Gholamreza Toogeh, Jeyran Zebardast, Katayoon Karimi, Behzad Nejad Tabrizi, Seyed Mohammad Javad Mortazavi
{"title":"Efficacy and Safety of Aspiration and Intra-Articular Injection of Tranexamic Acid in Acute Knee Hemarthrosis of Adult Haemophilic Patients: A Randomized Clinical Trial Study","authors":"Seyed Hadi Kalantar, Mohammadreza Razzaghof, Younes Noshadi, Mohammad Ayati Firoozabadi, Gholamreza Toogeh, Jeyran Zebardast, Katayoon Karimi, Behzad Nejad Tabrizi, Seyed Mohammad Javad Mortazavi","doi":"10.1111/hae.70000","DOIUrl":"10.1111/hae.70000","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Introduction</h3>\u0000 \u0000 <p>Hemarthrosis, particularly in the knee, accounts for most bleeding episodes in haemophilia. While joint aspiration has proven effective, the role of intra-articular (IA) tranexamic acid (TXA) in managing acute hemarthrosis remains unexplored.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>To assess the efficacy and safety of knee aspiration followed by IA TXA injection in acute haemophilic knee hemarthrosis.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Forty-four adult haemophilia patients with acute knee hemarthrosis (< 24 h) were randomized to undergo joint aspiration with (TXA group) or without (non-TXA group) IA TXA (1.5 g/15 mL) injection. Both groups received 75 mL injections, including 5 mL of 2% lidocaine and additional 0.9% saline. Ultrasound confirmed hemarthrosis, and standardized factor replacement was given pre-procedure. Primary outcomes included knee range of motion (ROM) and visual analogue scale (VAS) for pain. The significance was set at <i>p</i> < 0.05.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Final analysis included 21 and 17 male patients in the TXA and non-TXA groups, respectively. The TXA group showed a significantly greater knee ROM on days 3, 7, and 14 (<i>p</i> < 0.05), with no differences beyond Day 14. VAS pain scores were significantly lower in the TXA group at 24 h, 3 days, and 7 days post-procedure (<i>p</i> < 0.05). TXA patients reported faster return to work (<i>p</i> = 0.004) and higher satisfaction (<i>p</i> = 0.01). Hemarthrosis recurrence was lower in the TXA group (5.9% vs. 14.3% at 6 weeks; 64.7% vs. 90.5% at 6 months), though differences were not statistically significant. No complications were observed.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Joint aspiration with IA TXA is safe and effective for short-term ROM improvement and pain relief in acute haemophilic knee hemarthrosis.</p>\u0000 </section>\u0000 </div>","PeriodicalId":12819,"journal":{"name":"Haemophilia","volume":"31 2","pages":"286-294"},"PeriodicalIF":3.0,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143364392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
HaemophiliaPub Date : 2025-02-07DOI: 10.1111/hae.15151
Johnny Mahlangu, Maria Elisa Mancuso, Kathelijn Fischer, Claudia Djambas Khayat, Manuela Carvalho, Faraizah Abdul Karim, Shawn Jobe, Samantha Lucas, Blanca Salazar, Amy Suen, Brahm Goldstein, Wilfried Seifert, Thomas Chung, Christoph Königs
{"title":"Extension Study With rVIII-SingleChain in Previously Untreated Patients (PUPs) With Severe Haemophilia A","authors":"Johnny Mahlangu, Maria Elisa Mancuso, Kathelijn Fischer, Claudia Djambas Khayat, Manuela Carvalho, Faraizah Abdul Karim, Shawn Jobe, Samantha Lucas, Blanca Salazar, Amy Suen, Brahm Goldstein, Wilfried Seifert, Thomas Chung, Christoph Königs","doi":"10.1111/hae.15151","DOIUrl":"10.1111/hae.15151","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Introduction</h3>\u0000 \u0000 <p>Clinical trials and real-world evidence have demonstrated the efficacy and safety of rVIII-SingleChain in previously treated patients with haemophilia A.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>To investigate the safety and efficacy of rVIII-SingleChain in previously untreated patients (PUPs).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>In an open-label, phase 3, extension study, PUPs with severe haemophilia A (FVIII <1%) received rVIII-SingleChain prophylactically or on-demand. The primary endpoints were incidence of high-titre (HT) inhibitor formation to FVIII, treatment success for major bleeding episodes and annualised spontaneous bleeding rate (AsBR).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Twenty-four PUPs (median age 1 year [range 0–5]) were treated with rVIII-SingleChain; median time on study was 35.0 months (range 2.4–54.0). Overall, six PUPs developed a HT inhibitor (>5 BU/mL) and six developed a low-titre (LT) inhibitor (≤5 BU/mL). The median number of exposure days at inhibitor development was 10 (interquartile range [IQR] 5.0–14.0). Of 11 inhibitor-positive PUPs (five HT, six LT) who continued rVIII-SingleChain therapy, nine (81.8%; three HT, six LT) achieved inhibitor eradication (<0.6 BU/mL). Median time to eradication was 14.3 weeks (IQR 9.8–53.8). Seventeen treatment-emergent adverse events in 12 PUPs (50.0%) were related to rVIII-SingleChain, mainly inhibitor development (14/17 events). Treatment was successful (haemostatic efficacy rated excellent or good) for 290/315 bleeding events (92.1%). During prophylactic therapy, inhibitor-negative PUPs had a median (IQR) AsBR of 0.52 (0.00–4.99) and annualised bleeding rate of 1.98 (0.77–11.23).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>RVIII-SingleChain demonstrated a satisfactory benefit:risk profile in PUPs, with a high treatment success rate and a low AsBR during prophylaxis, and was effective at eradicating inhibitors.</p>\u0000 </section>\u0000 </div>","PeriodicalId":12819,"journal":{"name":"Haemophilia","volume":"31 2","pages":"214-223"},"PeriodicalIF":3.0,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/hae.15151","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143364404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
HaemophiliaPub Date : 2025-01-30DOI: 10.1111/hae.15156
Arman Vahabi, Volga Öztürk, Elcil Kaya Biçer, Ahmet Biçer, Semih Aydoğdu
{"title":"Tissue Transfer in the Management of Wound Complications in Patients With Haemophilia: Report of Two Cases","authors":"Arman Vahabi, Volga Öztürk, Elcil Kaya Biçer, Ahmet Biçer, Semih Aydoğdu","doi":"10.1111/hae.15156","DOIUrl":"10.1111/hae.15156","url":null,"abstract":"","PeriodicalId":12819,"journal":{"name":"Haemophilia","volume":"31 2","pages":"346-348"},"PeriodicalIF":3.0,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143064947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
HaemophiliaPub Date : 2025-01-27DOI: 10.1111/hae.15155
William McKeown, Cedric Hermans, Carmen Unzu, Mark A. Kay, Flora Peyvandi, Penni Smith, Wolfgang Miesbach, Glenn F. Pierce, Kate Khair, Leonard A. Valentino, Steven W. Pipe, Monisha Pillai, Micheala Jones, Virginie Delwart, Anil Sindhurakar, David E. Gutstein, Craig M. Kessler
{"title":"Operationalising a Haemophilia Gene Editing Lexicon for Practical Use","authors":"William McKeown, Cedric Hermans, Carmen Unzu, Mark A. Kay, Flora Peyvandi, Penni Smith, Wolfgang Miesbach, Glenn F. Pierce, Kate Khair, Leonard A. Valentino, Steven W. Pipe, Monisha Pillai, Micheala Jones, Virginie Delwart, Anil Sindhurakar, David E. Gutstein, Craig M. Kessler","doi":"10.1111/hae.15155","DOIUrl":"10.1111/hae.15155","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Introduction</h3>\u0000 \u0000 <p>Gene editing therapies offer the possibility of substantial improvement in treatment and quality of life for people with haemophilia (PWH) in a landscape of dynamic therapeutic advancement. Developing a common and understandable language to discuss gene editing will be essential to ensure these treatments can be deployed in a safe and effective manner with fully informed and shared decision-making between healthcare professionals (HCPs) and PWH. A lexicon explaining and clarifying key concepts is one potential tool to address these aims. Here we evaluate how a gene editing lexicon could be deployed to maximise impact and improve patient outcomes.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>To operationalise the gene editing lexicon for successful adoption by the haemophilia community.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Through an innovative, iterative process, representatives from the haemophilia community, including multidisciplinary HCPs, PWH, and caregivers, with support from language strategy experts, developed a gene editing lexicon and evaluated operational aspects for real-world adoption of this resource.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>A gene editing lexicon was developed, including infographics illustrating key concepts. Infographics were adapted from the lexicon to further clarify and communicate these concepts. Infographics were found to be a potentially vital tool for enhancing the practical use of the lexicon to promote shared decision-making and attain informed consent for gene editing therapies.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>A gene editing lexicon shows promise for improving the understanding of gene editing for all stakeholders in the haemophilia community. Ensuring the lexicon remains up to date with current therapies and appropriate strategies for adoption such as infographics will enable this resource to have maximum impact.</p>\u0000 </section>\u0000 </div>","PeriodicalId":12819,"journal":{"name":"Haemophilia","volume":"31 2","pages":"207-213"},"PeriodicalIF":3.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143046426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}