PMID- 35243202 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230328 IS - 2475-0379 (Electronic) IS - 2475-0379 (Linking) VI - 6 IP - 2 DP - 2022 Feb TI - Safety and effectiveness of recombinant factor XIII-A(2) in congenital factor XIII deficiency: Real-world evidence. PG - e12628 LID - 10.1002/rth2.12628 [doi] LID - e12628 AB - BACKGROUND: Regular factor XIII (FXIII) prophylaxis is standard treatment for congenital FXIII A-subunit deficiency (FXIII-A CD). Recombinant factor XIII-A(2) (rFXIII-A(2)) was extensively evaluated in the mentor trials. OBJECTIVE: To assess real-world safety and treatment effectiveness of rFXIII-A(2) prophylaxis from the mentor 6 trial. PATIENTS/METHODS: mentor 6 was a noninterventional, postauthorization safety study investigating rFXIII-A(2) prophylaxis in FXIII-A CD. rFXIII-A(2) treatment was observed for 2 to 6 years per patient. The primary end point was documentation of adverse drug reactions (including anti-FXIII antibody development). Secondary end points were serious adverse events (SAEs), medical events of special interest (MESIs), and annualized bleeding rate (ABR). RESULTS: Among 30 patients (mean age, 25.5 years), there were 44 adverse events (AEs) (30 mild, 13 moderate, 1 severe). Eleven AEs were possibly/probably related to rFXIII-A(2). Of four MESIs, two were unlikely related to rFXIII-A(2) (accidental overdose, deep vein thrombosis), and two were possibly/probably related (nonneutralizing anti-FXIII antibody, decreased therapeutic response). All 10 SAEs were unlikely related to rFXIII-A(2). Over a follow-up of 75.4 patient-years, there were six treatment-requiring bleeds (all trauma-related with no spontaneous bleeds), giving a treatment-requiring ABR of 0.066; five bleeds were treated successfully with rFXIII-A(2). Eight of nine minor surgeries performed during rFXIII-A(2) prophylaxis reported successful hemostatic outcomes (one missing evaluation). CONCLUSIONS: These data confirm that rFXIII-A(2) prophylaxis is well tolerated as long-term care. There were no spontaneous bleeds, ABR was low, and rFXIII-A(2) successfully treated bleeds in patients receiving rFXIII-A(2) prophylaxis. CI - (c) 2022 The Authors. Research and Practice in Thrombosis and Haemostasis published by Wiley Periodicals LLC on behalf of International Society on Thrombosis and Haemostasis (ISTH). FAU - Poulsen, Lone Hvitfeldt AU - Poulsen LH AD - The Haemophilia Center Department of Hematology Aarhus University Hospital Aarhus Denmark. FAU - Kerlin, Bryce A AU - Kerlin BA AUID- ORCID: 0000-0002-1756-8271 AD - The Ohio State University College of Medicine Nationwide Children's Hospital Columbus Ohio USA. FAU - Castaman, Giancarlo AU - Castaman G AUID- ORCID: 0000-0003-4973-1317 AD - Center for Bleeding Disorders and Coagulation Department of Oncology Careggi University Hospital Firenze Italy. FAU - Molinari, Angelo Claudio AU - Molinari AC AUID- ORCID: 0000-0002-8078-8402 AD - Regional Reference Center for Hemorrhagic Diseases Giannina Gaslini Children's Hospital Genoa Italy. FAU - Menegatti, Marzia AU - Menegatti M AUID- ORCID: 0000-0002-8527-7556 AD - IRCCS Fondazione Ca' Granda Ospedale Maggiore Policlinico Angelo Bianchi Bonomi Hemophilia and Thrombosis Center Milan Italy. FAU - Nugent, Diane AU - Nugent D AD - Children's Hospital of Orange County University of California at Irvine, and Center for Inherited Blood Disorders Orange California USA. FAU - Dey, Sohan AU - Dey S AD - Novo Nordisk Service Centre India Private Ltd Bangalore India. FAU - Garly, May-Lill AU - Garly ML AD - Novo Nordisk A/S Soborg Denmark. FAU - Carcao, Manuel AU - Carcao M AUID- ORCID: 0000-0001-5350-1763 AD - Division of Haematology/Oncology Department of Paediatrics and Child Health Evaluative Sciences Research Institute, Hospital for Sick Children University of Toronto Toronto Ontario Canada. LA - eng PT - Journal Article DEP - 20220227 PL - United States TA - Res Pract Thromb Haemost JT - Research and practice in thrombosis and haemostasis JID - 101703775 PMC - PMC8882239 OTO - NOTNLM OT - factor XIII OT - long-term care OT - recombinant factor XIII-A2 OT - safety OT - treatment effectiveness EDAT- 2022/03/05 06:00 MHDA- 2022/03/05 06:01 PMCR- 2022/02/27 CRDT- 2022/03/04 05:43 PHST- 2021/05/25 00:00 [received] PHST- 2021/10/06 00:00 [revised] PHST- 2021/10/31 00:00 [accepted] PHST- 2022/03/04 05:43 [entrez] PHST- 2022/03/05 06:00 [pubmed] PHST- 2022/03/05 06:01 [medline] PHST- 2022/02/27 00:00 [pmc-release] AID - S2475-0379(22)01153-0 [pii] AID - RTH212628 [pii] AID - 10.1002/rth2.12628 [doi] PST - epublish SO - Res Pract Thromb Haemost. 2022 Feb 27;6(2):e12628. doi: 10.1002/rth2.12628. eCollection 2022 Feb.