Subscribe to RSS
DOI: 10.1055/a-2657-6291
Lupus Anticoagulant-hypoprothrombinemia Syndrome: A Review Enriched by a New Particular Patient

Abstract
Lupus anticoagulant-hypoprothrombinemia syndrome (LAHS) is a rare hemorrhagic disorder that should be differentiated from classical antiphospholipid syndrome. Literature review shows that LAHS may affect people at any age but approximately 40% are children younger than 10 years. Autoimmune and infectious diseases are the most frequent triggering causes, and the laboratory profile is characterized by a prolongation of prothrombin time (PT) and activated partial thromboplastin time (aPTT) with a mild to severe reduction in factor II levels. In more than half the patients, the other coagulation factors are normal, while anti-cardiolipin and anti-β2-glycoprotein I antibodies show a high titer. Lupus anticoagulant (LA) is positive in 100% of cases, as this represents a defining feature. The majority of patients have mucocutaneous bleeding events (44%); cerebral bleeding can occur in 10% of patients and other common bleeding sites are the gastrointestinal and genitourinary tracts. There is no standard treatment for LAHS. Supportive measures, such as fresh frozen plasma, packed red blood, and platelet transfusion, are frequently administered in association with steroids alone or in combination with intravenous immunoglobulin or cyclophosphamide, azathioprine, and rituximab. Death, recurrent bleeding, and thrombosis can occur in approximately 3, 13, and 14% of patients, respectively. Our patient was an old man with a myocardial infarction and a systemic infection from Candida parapsilosis. Thrombin generation and clot waveform analysis were performed before and after treatment. Thrombin generation better reflected the role of prothrombin, revealing that a factor II value of below around 15% can represent a risk for major bleeding. Treatment with methylprednisolone and three-factor human prothrombin complex concentrate allowed the patient to reach a complete recovery 1 month after initial diagnosis.
Keywords
LA-hypoprothrombinemia syndrome - bleeding management - thrombin generation - clot waveform analysisPublication History
Received: 21 April 2025
Accepted: 16 July 2025
Article published online:
25 July 2025
© 2025. Thieme. All rights reserved.
Thieme Medical Publishers, Inc.
333 Seventh Avenue, 18th Floor, New York, NY 10001, USA
-
References
- 1 Galli M, Luciani D, Bertolini G, Barbui T. Lupus anticoagulants are stronger risk factors for thrombosis than anticardiolipin antibodies in the antiphospholipid syndrome: a systematic review of the literature. Blood 2003; 101 (05) 1827-1832
- 2 Bajaj SP, Rapaport SI, Fierer DS, Herbst KD, Schwartz DB. A mechanism for the hypoprothrombinemia of the acquired hypoprothrombinemia-lupus anticoagulant syndrome. Blood 1983; 61 (04) 684-692
- 3 Fujiwara K, Shimizu J, Tsukahara H, Shimada A. Lupus anticoagulant-hypoprothrombinemia syndrome and immunoglobulin-A vasculitis: a report of Japanese sibling cases and review of the literature. Rheumatol Int 2019; 39 (10) 1811-1819
- 4 Clauser S, Fischer AM, Darnige L. Quinidine-induced lupus anticoagulant, hypoprothrombinemia, and antiprothrombin antibodies. Am J Hematol 2007; 82 (04) 330
- 5 Harrison RL, Alperin JB, Kumar D. Concurrent lupus anticoagulants and prothrombin deficiency due to phenytoin use. Arch Pathol Lab Med 1987; 111 (08) 719-722
- 6 Rapaport SI, Ames SB, Duvall BJ. A plasma coagulation defect in systemic lupus erythematosus arising from hypoprothrombinemia combined with antiprothrombinase activity. Blood 1960; 15: 212-227
- 7 Hemker HC, Giesen P, Al Dieri R. et al. Calibrated automated thrombin generation measurement in clotting plasma. Pathophysiol Haemost Thromb 2003; 33 (01) 4-15
- 8 Tripodi A. Thrombin generation: a global coagulation procedure to investigate hypo- and hyper-coagulability. Haematologica 2020; 105 (09) 2196-2199
- 9 Marongiu F, Ruberto MF, Marongiu S, Barcellona D. Clot waveform analysis: from hypercoagulability to hypocoagulability: a review. Arch Pathol Lab Med 2024; 148 (12) 1371-1375
- 10 Shima M, Thachil J, Nair SC, Srivastava A. Scientific and Standardization Committee. Towards standardization of clot waveform analysis and recommendations for its clinical applications. J Thromb Haemost 2013; 11 (07) 1417-1420
- 11 Braun PJ, Givens TB, Stead AG. et al. Properties of optical data from activated partial thromboplastin time and prothrombin time assays. Thromb Haemost 1997; 78 (03) 1079-1087
- 12 Solano C, Zerafa P, Bird R. A study of atypical APTT derivative curves on the ACL TOP coagulation analyser. Int J Lab Hematol 2011; 33 (01) 67-78
- 13 Miller CH. Laboratory testing for factor VIII and IX inhibitors in haemophilia: a review. Haemophilia 2018; 24 (02) 186-197
- 14 Abdo L, Mekinian A, Riviere S, Fain O. A case of lupus anticoagulant-hypoprothrombinemia syndrome associated with systemic lupus erythematosus. Joint Bone Spine 2016; 83 (05) 589-590
- 15 Acedo N, Alonso A, Feijoó ES, García C, Ortiz AM, Alegre A. Lupus anticoagulant hypoprothrombinemia syndrome: a case report. Clin Case Rep 2023; 11 (04) e7071
- 16 Amiral J, Aronis S, Adamtziki E, Garoufi A, Karpathios T. Association of lupus anticoagulant with transient antibodies to prothrombin in a patient with hypoprothrombinemia. Thromb Res 1997; 86 (01) 73-78
- 17 Anderson A-K, Mohan U, Liesner R. Transient lupus anticoagulant: an unusual cause of bruising in children. Emerg Med J 2003; 20 (05) E6
- 18 Anurathapan U, Sasanakul W, Sirachainan N, Kasemkosolsri C, Jaovisidha S, Chuansumrit A. Acquired hypoprothrombinemia inducing bleeding in a girl with transient antiphospholipid antibody: case report. J Med Assoc Thai 2012; 95 (02) 282-287
- 19 Appert-Flory A, Fischer F, Amiral J, Monpoux F. Lupus anticoagulant-hypoprothrombinemia syndrome (HLAS): report of one case in a familial infectious context. Thromb Res 2010; 126 (02) e139-e140
- 20 Ayoub O, Aljurf M, Al Nounou R, Chaudhri NA. Systemic lupus erythematosus presenting with haemorrhagic manifestation. Clin Lab Haematol 1999; 21 (06) 413-416
- 21 Baca V, Montiel G, Meillón L. et al. Diagnosis of lupus anticoagulant in the lupus anticoagulant-hypoprothrombinemia syndrome: report of two cases and review of the literature. Am J Hematol 2002; 71 (03) 200-207
- 22 Baudo F, Redaelli R, Pezzetti L. et al. Prothrombin-antibody coexistent with lupus anticoagulant (LA): clinical study and immunochemical characterization. Thromb Res 1990; 57 (02) 279-287
- 23 Becton DL, Stine KC. Transient lupus anticoagulants associated with hemorrhage rather than thrombosis: the hemorrhagic lupus anticoagulant syndrome. J Pediatr 1997; 130 (06) 998-1000
- 24 Bel Feki N, Zayet S, Ben Ghorbel I, Houman M-H. Lupus anticoagulant-hypoprothrombinemia syndrome presenting with co-existing cerebral venous thrombosis and subdural hemorrhage. J Mal Vasc 2016; 41 (06) 403-406
- 25 Bernini JC, Buchanan GR, Ashcraft J. Hypoprothrombinemia and severe hemorrhage associated with a lupus anticoagulant. J Pediatr 1993; 123 (06) 937-939
- 26 Bernstein ML, Salusinsky-Sternbach M, Bellefleur M, Esseltine DW. Thrombotic and hemorrhagic complications in children with the lupus anticoagulant. Am J Dis Child 1984; 138 (12) 1132-1135
- 27 Bhowmick R, Agarwal I, Arumugam V, Kumar T S. Lupus anticoagulant-hypoprothrombinemia syndrome. Indian J Pediatr 2018; 85 (05) 392-393
- 28 Brblić T, Brčić K, Margetić S, Čaržavec D, Gaćina P, Bogdanić N. Lupus anticoagulant-hypoprothrombinemia syndrome with severe bleeding diathesis after coronavirus disease 2019: a case report. Croat Med J 2022; 63 (05) 490-494
- 29 Carreño-Tarragona G, Morales E, Jiménez-Herrero MC, Cortés-Fornieles E, Gutierrez E, Praga M. Lupus anticoagulant-hypoprothrombinemia syndrome: a rare association in systemic lupus erythematosus. Nefrologia 2016; 36 (02) 186-188
- 30 Carvalho C, Viveiro C, Maia P, Rezende T. Acquired antiprothrombin antibodies: an unusual cause of bleeding. BMJ Case Rep 2013; 2013: bcr2012007948
- 31 Chan EY-H, Leung KFS, Soo ETL, Ma ALT. A Chinese boy with lupus anticoagulant-hypoprothrombinemia syndrome: a case report and review of the literature. J Pediatr Hematol Oncol 2021; 43 (03) e445-e447
- 32 Chen X, Nedved D, Plapp FV, Cunningham MT. Fatal pulmonary embolism and pulmonary hemorrhage in lupus anticoagulant hypoprothrombinemia syndrome: a case report and review of literature. Blood Coagul Fibrinolysis 2018; 29 (08) 708-713
- 33 Chumsky J, Kahn PJ, Carroll WL, Pierce KA, Hillier K. Lupus anti-coagulant hypoprothrombinemia syndrome across different ages: a case report and review of the literature. Clin Rheumatol 2023; 42 (08) 2231-2236
- 34 Chung CH, Park CY. Lupus anticoagulant-hypoprothrombinemia in healthy adult. Korean J Intern Med (Korean Assoc Intern Med) 2008; 23 (03) 149-151
- 35 Corrigan Jr JJ, Patterson JH, May NE. Incoagulability of the blood in systemic lupus erythematosus. A case due to hypoprothrombinemia and a circulating anticoagulant. Am J Dis Child 1970; 119 (04) 365-369
- 36 Côté HCF, Huntsman DG, Wu J, Wadsworth LD, MacGillivray RT. A new method for characterization and epitope determination of a lupus anticoagulant-associated neutralizing antiprothrombin antibody. Am J Clin Pathol 1997; 107 (02) 197-205
- 37 Davey AL, Foxton S-J, Bala P, Richards M, Cuthbert A. Bruising: when it is spontaneous and not idiopathic thrombocytopenia purpura. J Paediatr Child Health 2007; 43 (04) 310-311
- 38 de Larrañaga G, Forastiero R, Carreras LO, Zala N, Guzman L, Alonso B. Acquired hypoprothrombinemia related to high titres of antiprotein-phospholipid antibodies. Thromb Haemost 1999; 81 (02) 317-318
- 39 Eberhard A, Sparling C, Sudbury S, Ford P, Laxer R, Silverman E. Hypoprothrombinemia in childhood systemic lupus erythematosus. Semin Arthritis Rheum 1994; 24 (01) 12-18
- 40 Erkan D, Bateman H, Lockshin MD. Lupus anticoagulant-hypoprothrombinemia syndrome associated with systemic lupus erythematosus: report of 2 cases and review of literature. Lupus 1999; 8 (07) 560-564
- 41 Follea G, Coiffier B, Viale JP, Dechavanne M. Antiprothrombinase and factor II deficiency in a non SLE patient. Thromb Haemost 1981; 46 (03) 670
- 42 Foord A, Baca N, Buchbinder D, Mahajerin A. Lupus anticoagulant hypoprothrombinemia syndrome associated with severe thrombocytopenia in a child. Pediatr Blood Cancer 2017; 64 (06)
- 43 Galland J, Mohamed S, Revuz S. et al. Lupus anticoagulant-hypoprothrombinemia syndrome and catastrophic antiphospholipid syndrome in a patient with antidomain I antibodies. Blood Coagul Fibrinolysis 2016; 27 (05) 580-582
- 44 Cetin Gedik K, Siddique S, Aguiar CL. Rituximab use in pediatric lupus anticoagulant hypoprothrombinemia syndrome—report of three cases and review of the literature. Lupus 2018; 27 (07) 1190-1197
- 45 Grau E, Real E, Pastor E, Ivorra J, Quecedo E. Prothrombin deficiency and hemorrhage associated with a lupus anticoagulant. Am J Hematol 1997; 54 (01) 85
- 46 Hara Y, Makita M, Ishikawa T. et al. Lupus anticoagulant hypoprothrombinemia syndrome in Bence-Jones protein κ-type multiple myeloma patient with phosphatidylserine-dependent antiprothrombin antibody. Ann Hematol 2013; 92 (04) 563-564
- 47 Hift RJ, Bird AR, Sarembock BD. Acquired hypoprothrombinaemia and lupus anticoagulant: response to steroid therapy. Br J Rheumatol 1991; 30 (04) 308-310
- 48 Hudson N, Duffy CM, Rauch J, Paquin JD, Esdaile JM. Catastrophic haemorrhage in a case of paediatric primary antiphospholipid syndrome and factor II deficiency. Lupus 1997; 6 (01) 68-71
- 49 Indolfi G, Poggi GM, Regoli M, Bartolini E, Nesi A, Resti M. A coeliac child presenting with bleeding. Acta Paediatr 2013; 102 (05) e191-e192
- 50 Jaeger U, Kapiotis S, Pabinger I, Puchhammer E, Kyrle PA, Lechner K. Transient lupus anticoagulant associated with hypoprothrombinemia and factor XII deficiency following adenovirus infection. Ann Hematol 1993; 67 (02) 95-99
- 51 Jin J, Zehnder JL. Prozone effect in the diagnosis of lupus anticoagulant for the lupus anticoagulant-hypoprothrombinemia syndrome. Am J Clin Pathol 2016; 146 (02) 262-267
- 52 Knobe K, Tedgård U, Ek T, Sandström PE, Hillarp A. Lupus anticoagulants in two children—bleeding due to nonphospholipid-dependent antiprothrombin antibodies. Eur J Pediatr 2012; 171 (09) 1383-1387
- 53 Kocheril AP, Vettiyil GI, George AS. et al. Pediatric systemic lupus erythematosus with lupus anticoagulant hypoprothrombinemia syndrome—a case series with review of literature. Lupus 2021; 30 (04) 641-648
- 54 Komvilaisak P, Wisanuyotin S, Jettrisuparb A, Wiangnon S. Lupus anticoagulant-hypoprothrombinemia syndrome (LAC-HPS) in children with systemic lupus erythematosus: report of 3 cases. J Pediatr Hematol Oncol 2017; 39 (08) e521-e524
- 55 Lee MT, Nardi MA, Hadzi-Nesic J, Karpatkin M. Transient hemorrhagic diathesis associated with an inhibitor of prothrombin with lupus anticoagulant in a 1 1/2-year-old girl: report of a case and review of the literature. Am J Hematol 1996; 51 (04) 307-314
- 56 Lipari A, Sorrentino S, Tamburini C, Castaman G, Prisco D, De Candia E. Bleeding and thrombotic events in a patient with lupus anticoagulant-associated hypoprothrombinemia and antiphospholipid antibody syndromes: managing hemostasis between Scylla and Charybdis. Intern Emerg Med 2023; 18 (04) 1233-1238
- 57 Llorente-Chávez A, Plascencia-Félix JF, Merayo-Chalico J. Lupus anticoagulant-hypoprothrombinaemia syndrome: subdural haematoma as an unusual and initial manifestation. Mod Rheumatol Case Rep 2021; 5 (02) 306-309
- 58 Pérez ML, Laso RV, Velasco-Rodríguez D. et al. Lupus anticoagulant-hypoprothrombinemia syndrome: a cerebral bleeding case report as systemic lupus erythematosus debut. Reumatol Clin (Engl Ed) 2023; 19 (04) 223-227
- 59 Lu Y, Huang X-M. Autoimmune hemolytic anemia as an initial presentation in children with systemic lupus erythematosus: two case reports. J Int Med Res 2022; 50 (08) 3000605221115390
- 60 Mauge L, Passeron A, Alhenc-Gelas M, Pouchot J, Darnige L. Activated partial thromboplastin time sensitivity to lupus anticoagulant in a patient with transient arthritis and lupus anticoagulant-hypoprothrombinemia syndrome. Ann Hematol 2015; 94 (04) 713-715
- 61 Mazodier K, Arnaud L, Mathian A. et al. Lupus anticoagulant-hypoprothrombinemia syndrome: report of 8 cases and review of the literature. Medicine (Baltimore) 2012; 91 (05) 251-260
- 62 Mediwake H, Robertson J, Beggs J, Mason J. Anaphylaxis following human prothrombin complex concentrate in a child with lupus anticoagulant hypoprothrombinemia syndrome: a cautionary tale. TH Open 2018; 2 (01) e25-e27
- 63 Meireles E, Machado F, Teles L, Chumakova A, Sequeira J, Spínola A. A case report of severe bleeding due to lupus anticoagulant hypoprothrombinemia syndrome. J Thromb Thrombolysis 2020; 49 (02) 334-336
- 64 Mizumoto H, Maihara T, Hiejima E. et al. Transient antiphospholipid antibodies associated with acute infections in children: a report of three cases and a review of the literature. Eur J Pediatr 2006; 165 (07) 484-488
- 65 Moll S, McCloud M, Ortel TL. Subdural hematoma and lupus anticoagulants. Stroke 1997; 28 (03) 646-648
- 66 Monti M, Martini T, Pengo V. et al. Association between severe acute respiratory syndrome coronavirus 2 infection (coronavirus disease 2019) and lupus anticoagulant-hypoprothrombinemia syndrome: a case report and literature Assessment. Semin Thromb Hemost 2023; 49 (05) 558-560
- 67 Mulliez SMN, De Keyser F, Verbist C. et al. Lupus anticoagulant-hypoprothrombinemia syndrome: report of two cases and review of the literature. Lupus 2015; 24 (07) 736-745
- 68 Nusrat S, Tewari S, Khan O. Successful treatment of lupus anticoagulant hypoprothrombinemia syndrome with rituximab. Thromb J 2023; 21 (01) 77
- 69 Omer MH, Salama H, Alghaythi AM, Alharbi AA, AlJohani G. Lupus anticoagulant-hypoprothrombinemia syndrome and pseudotumor cerebri as an initial presentation of systemic lupus erythematosus in a 16-year-old male patient: a case report and literature review. Am J Case Rep 2022; 23: e938051
- 70 Ozdel S, Baglan E, Azapağası EÜ, Eroglu FK, Kargın Cakıcı E, Bulbul M. An extremely rare cause of prolonged menstruation: lupus anticoagulant-hypoprothrombinemia syndrome. J Obstet Gynaecol 2020; 40 (06) 887-888
- 71 Paschal RD, Neff AT. Resolution of hypoprothrombinemia-lupus anticoagulant syndrome (HLAS) after multidrug therapy with rituximab: a case report and review of the literature. Haemophilia 2013; 19 (02) e62-e65
- 72 Peacock NW, Levine SP. Case report: the lupus anticoagulant-hypoprothrombinemia syndrome. Am J Med Sci 1994; 307 (05) 346-349
- 73 Pengo V, Zardo L, Cattini MG. et al. Prothrombin is responsible for the lupus cofactor phenomenon in a patient with lupus anticoagulant/hypoprothrombinemia syndrome. TH Open 2020; 4 (01) e40-e44
- 74 Pernod G, Arvieux J, Carpentier PH, Mossuz P, Bosson JL, Polack B. Successful treatment of lupus anticoagulant-hypoprothrombinemia syndrome using intravenous immunoglobulins. Thromb Haemost 1997; 78 (02) 969-970
- 75 Pilania RK, Suri D, Jindal AK. et al. Lupus anticoagulant hypoprothrombinemia syndrome associated with systemic lupus erythematosus in children: report of two cases and systematic review of the literature. Rheumatol Int 2018; 38 (10) 1933-1940
- 76 Raflores MB, Kaplan RB, Spero JA. Pre-operative management of a patient with hypoprothrombinemia-lupus anticoagulant syndrome. Thromb Haemost 2007; 98 (01) 248-250
- 77 Rodriguez V, Reed AM, Kuntz NL, Anderson PM, Smithson WA, Nichols WL. Antiphospholipid syndrome with catastrophic bleeding and recurrent ischemic strokes as initial presentation of systemic lupus erythematosus. J Pediatr Hematol Oncol 2005; 27 (07) 403-407
- 78 Sakamoto A, Ogura M, Hattori A. et al. Lupus anticoagulant hypoprothrombinemia syndrome associated with bilateral adrenal haemorrhage in a child: early diagnosis and intervention. Thromb J 2021; 19 (01) 19
- 79 Sarker T, Roy S, Hollon W, Rajpurkar M. Lupus anticoagulant acquired hypoprothrombinemia syndrome in childhood: two distinct patterns and review of the literature. Haemophilia 2015; 21 (06) 754-760
- 80 Schmugge M, Tölle S, Marbet GA, Laroche P, Meili EO. Gingival bleeding, epistaxis and haematoma three days after gastroenteritis: the haemorrhagic lupus anticoagulant syndrome. Eur J Pediatr 2001; 160 (01) 43-46
- 81 Schreiber A, Schindler R, Adcock Funk DM, Kahl A. The Case | A 48-year-old man with pulmonary-renal syndrome. Kidney Int 2015; 87 (03) 667-668
- 82 Schwartz S, Esseltine DW. Postextraction hemorrhage in a young male patient with systemic lupus erythematosus. Oral Surg Oral Med Oral Pathol 1984; 57 (03) 254-257
- 83 Simel DL, St Clair EW, Adams J, Greenberg CS. Correction of hypoprothrombinemia by immunosuppressive treatment of the lupus anticoagulant-hypoprothrombinemia syndrome. Am J Med 1987; 83 (03) 563-566
- 84 Small P. Severe hemorrhage in a patient with circulating anticoagulant, acquired hypoprothrombinemia, and systemic lupus erythematosus. Arthritis Rheum 1988; 31 (09) 1210-1211
- 85 Kim JS, Kim MJ, Bae EY, Jeong DC. Pulmonary hemorrhage in pediatric lupus anticoagulant hypoprothrombinemia syndrome. Korean J Pediatr 2014; 57 (04) 202-205
- 86 Sreedharanunni S, Ahluwalia J, Kumar N, Bose SK, Dhawan R, Malhotra P. Lupus anticoagulant-hypoprothrombinemia syndrome: a rare cause of intracranial bleeding. Blood Coagul Fibrinolysis 2017; 28 (05) 416-418
- 87 Matijasic Stjepovic N, Kranjcec I, Gagro A, Jakovljevic G. Lupus anticoagulant hypoprothrombinemia syndrome—could it be a sequelae of COVID-19?. Blood Res 2023; 58 (01) 77-79
- 88 Sun YH, Nie WJ, Tian DD, Ye Q. Lupus anticoagulant-hypoprothrombinemia syndrome in children: three case reports and systematic review of the literature. Lupus 2023; 32 (10) 1211-1221
- 89 Taddio A, Brescia AC, Lepore L, Rose' CD. Steady improvement of prothrombin levels after cyclophosphamide therapy in pediatric lupus anticoagulant hypoprothrombinemia syndrome (LAHPS). Clin Rheumatol 2007; 26 (12) 2167-2169
- 90 Vandamme S, Desclée E, Ver Elst K. et al. Lupus anticoagulant hypoprothrombinaemia syndrome: an instructive paediatric case. J Paediatr Child Health 2021; 57 (03) 443-444
- 91 Vinet E, Rich E, Senécal J-L. Thromboembolism complicating the treatment of lupus anticoagulant hypoprothrombinemia syndrome. J Rheumatol 2006; 33 (10) 2088-2090
- 92 Vivaldi P, Rossetti G, Galli M, Finazzi G. Severe bleeding due to acquired hypoprothrombinemia-lupus anticoagulant syndrome. Case report and review of literature. Haematologica 1997; 82 (03) 345-347
- 93 Williams S, Linardic C, Wilson O, Comp P, Gralnick HR. Acquired hypoprothrombinemia: effects of danazol treatment. Am J Hematol 1996; 53 (04) 272-276
- 94 Yacobovich JR, Uziel Y, Friedman Z, Radnay J, Wolach B. Diffuse muscular haemorrhage as presenting sign of juvenile systemic lupus erythematosus and lupus anticoagulant hypoprothrombinaemia syndrome. Rheumatology (Oxford) 2001; 40 (05) 585-587
- 95 Matsumoto T, Shima M, Takeyama M. et al. The measurement of low levels of factor VIII or factor IX in hemophilia A and hemophilia B plasma by clot waveform analysis and thrombin generation assay. J Thromb Haemost 2006; 4 (02) 377-384